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/*
* Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "asm/macroAssembler.hpp"
#include "ci/ciUtilities.inline.hpp"
#include "classfile/systemDictionary.hpp"
#include "classfile/vmSymbols.hpp"
#include "compiler/compileBroker.hpp"
#include "compiler/compileLog.hpp"
#include "gc/shared/barrierSet.hpp"
#include "jfr/support/jfrIntrinsics.hpp"
#include "memory/resourceArea.hpp"
#include "oops/objArrayKlass.hpp"
#include "opto/addnode.hpp"
#include "opto/arraycopynode.hpp"
#include "opto/c2compiler.hpp"
#include "opto/callGenerator.hpp"
#include "opto/castnode.hpp"
#include "opto/cfgnode.hpp"
#include "opto/convertnode.hpp"
#include "opto/countbitsnode.hpp"
#include "opto/intrinsicnode.hpp"
#include "opto/idealKit.hpp"
#include "opto/mathexactnode.hpp"
#include "opto/movenode.hpp"
#include "opto/mulnode.hpp"
#include "opto/narrowptrnode.hpp"
#include "opto/opaquenode.hpp"
#include "opto/parse.hpp"
#include "opto/runtime.hpp"
#include "opto/rootnode.hpp"
#include "opto/subnode.hpp"
#include "prims/nativeLookup.hpp"
#include "prims/unsafe.hpp"
#include "runtime/objectMonitor.hpp"
#include "runtime/sharedRuntime.hpp"
#include "utilities/macros.hpp"
class LibraryIntrinsic : public InlineCallGenerator {
// Extend the set of intrinsics known to the runtime:
public:
private:
bool _is_virtual;
bool _does_virtual_dispatch;
int8_t _predicates_count; // Intrinsic is predicated by several conditions
int8_t _last_predicate; // Last generated predicate
vmIntrinsics::ID _intrinsic_id;
public:
LibraryIntrinsic(ciMethod* m, bool is_virtual, int predicates_count, bool does_virtual_dispatch, vmIntrinsics::ID id)
: InlineCallGenerator(m),
_is_virtual(is_virtual),
_does_virtual_dispatch(does_virtual_dispatch),
_predicates_count((int8_t)predicates_count),
_last_predicate((int8_t)-1),
_intrinsic_id(id)
{
}
virtual bool is_intrinsic() const { return true; }
virtual bool is_virtual() const { return _is_virtual; }
virtual bool is_predicated() const { return _predicates_count > 0; }
virtual int predicates_count() const { return _predicates_count; }
virtual bool does_virtual_dispatch() const { return _does_virtual_dispatch; }
virtual JVMState* generate(JVMState* jvms);
virtual Node* generate_predicate(JVMState* jvms, int predicate);
vmIntrinsics::ID intrinsic_id() const { return _intrinsic_id; }
};
// Local helper class for LibraryIntrinsic:
class LibraryCallKit : public GraphKit {
private:
LibraryIntrinsic* _intrinsic; // the library intrinsic being called
Node* _result; // the result node, if any
int _reexecute_sp; // the stack pointer when bytecode needs to be reexecuted
const TypeOopPtr* sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type);
public:
LibraryCallKit(JVMState* jvms, LibraryIntrinsic* intrinsic)
: GraphKit(jvms),
_intrinsic(intrinsic),
_result(NULL)
{
// Check if this is a root compile. In that case we don't have a caller.
if (!jvms->has_method()) {
_reexecute_sp = sp();
} else {
// Find out how many arguments the interpreter needs when deoptimizing
// and save the stack pointer value so it can used by uncommon_trap.
// We find the argument count by looking at the declared signature.
bool ignored_will_link;
ciSignature* declared_signature = NULL;
ciMethod* ignored_callee = caller()->get_method_at_bci(bci(), ignored_will_link, &declared_signature);
const int nargs = declared_signature->arg_size_for_bc(caller()->java_code_at_bci(bci()));
_reexecute_sp = sp() + nargs; // "push" arguments back on stack
}
}
virtual LibraryCallKit* is_LibraryCallKit() const { return (LibraryCallKit*)this; }
ciMethod* caller() const { return jvms()->method(); }
int bci() const { return jvms()->bci(); }
LibraryIntrinsic* intrinsic() const { return _intrinsic; }
vmIntrinsics::ID intrinsic_id() const { return _intrinsic->intrinsic_id(); }
ciMethod* callee() const { return _intrinsic->method(); }
bool try_to_inline(int predicate);
Node* try_to_predicate(int predicate);
void push_result() {
// Push the result onto the stack.
if (!stopped() && result() != NULL) {
BasicType bt = result()->bottom_type()->basic_type();
push_node(bt, result());
}
}
private:
void fatal_unexpected_iid(vmIntrinsics::ID iid) {
fatal("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid));
}
void set_result(Node* n) { assert(_result == NULL, "only set once"); _result = n; }
void set_result(RegionNode* region, PhiNode* value);
Node* result() { return _result; }
virtual int reexecute_sp() { return _reexecute_sp; }
// Helper functions to inline natives
Node* generate_guard(Node* test, RegionNode* region, float true_prob);
Node* generate_slow_guard(Node* test, RegionNode* region);
Node* generate_fair_guard(Node* test, RegionNode* region);
Node* generate_negative_guard(Node* index, RegionNode* region,
// resulting CastII of index:
Node* *pos_index = NULL);
Node* generate_limit_guard(Node* offset, Node* subseq_length,
Node* array_length,
RegionNode* region);
void generate_string_range_check(Node* array, Node* offset,
Node* length, bool char_count);
Node* generate_current_thread(Node* &tls_output);
Node* load_mirror_from_klass(Node* klass);
Node* load_klass_from_mirror_common(Node* mirror, bool never_see_null,
RegionNode* region, int null_path,
int offset);
Node* load_klass_from_mirror(Node* mirror, bool never_see_null,
RegionNode* region, int null_path) {
int offset = java_lang_Class::klass_offset_in_bytes();
return load_klass_from_mirror_common(mirror, never_see_null,
region, null_path,
offset);
}
Node* load_array_klass_from_mirror(Node* mirror, bool never_see_null,
RegionNode* region, int null_path) {
int offset = java_lang_Class::array_klass_offset_in_bytes();
return load_klass_from_mirror_common(mirror, never_see_null,
region, null_path,
offset);
}
Node* generate_access_flags_guard(Node* kls,
int modifier_mask, int modifier_bits,
RegionNode* region);
Node* generate_interface_guard(Node* kls, RegionNode* region);
Node* generate_array_guard(Node* kls, RegionNode* region) {
return generate_array_guard_common(kls, region, false, false);
}
Node* generate_non_array_guard(Node* kls, RegionNode* region) {
return generate_array_guard_common(kls, region, false, true);
}
Node* generate_objArray_guard(Node* kls, RegionNode* region) {
return generate_array_guard_common(kls, region, true, false);
}
Node* generate_non_objArray_guard(Node* kls, RegionNode* region) {
return generate_array_guard_common(kls, region, true, true);
}
Node* generate_array_guard_common(Node* kls, RegionNode* region,
bool obj_array, bool not_array);
Node* generate_virtual_guard(Node* obj_klass, RegionNode* slow_region);
CallJavaNode* generate_method_call(vmIntrinsics::ID method_id,
bool is_virtual = false, bool is_static = false);
CallJavaNode* generate_method_call_static(vmIntrinsics::ID method_id) {
return generate_method_call(method_id, false, true);
}
CallJavaNode* generate_method_call_virtual(vmIntrinsics::ID method_id) {
return generate_method_call(method_id, true, false);
}
Node * load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, bool is_exact, bool is_static, ciInstanceKlass * fromKls);
Node * field_address_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, bool is_exact, bool is_static, ciInstanceKlass * fromKls);
Node* make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2, StrIntrinsicNode::ArgEnc ae);
bool inline_string_compareTo(StrIntrinsicNode::ArgEnc ae);
bool inline_string_indexOf(StrIntrinsicNode::ArgEnc ae);
bool inline_string_indexOfI(StrIntrinsicNode::ArgEnc ae);
Node* make_indexOf_node(Node* src_start, Node* src_count, Node* tgt_start, Node* tgt_count,
RegionNode* region, Node* phi, StrIntrinsicNode::ArgEnc ae);
bool inline_string_indexOfChar();
bool inline_string_equals(StrIntrinsicNode::ArgEnc ae);
bool inline_string_toBytesU();
bool inline_string_getCharsU();
bool inline_string_copy(bool compress);
bool inline_string_char_access(bool is_store);
Node* round_double_node(Node* n);
bool runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName);
bool inline_math_native(vmIntrinsics::ID id);
bool inline_math(vmIntrinsics::ID id);
template <typename OverflowOp>
bool inline_math_overflow(Node* arg1, Node* arg2);
void inline_math_mathExact(Node* math, Node* test);
bool inline_math_addExactI(bool is_increment);
bool inline_math_addExactL(bool is_increment);
bool inline_math_multiplyExactI();
bool inline_math_multiplyExactL();
bool inline_math_multiplyHigh();
bool inline_math_negateExactI();
bool inline_math_negateExactL();
bool inline_math_subtractExactI(bool is_decrement);
bool inline_math_subtractExactL(bool is_decrement);
bool inline_min_max(vmIntrinsics::ID id);
bool inline_notify(vmIntrinsics::ID id);
Node* generate_min_max(vmIntrinsics::ID id, Node* x, Node* y);
// This returns Type::AnyPtr, RawPtr, or OopPtr.
int classify_unsafe_addr(Node* &base, Node* &offset, BasicType type);
Node* make_unsafe_address(Node*& base, Node* offset, BasicType type = T_ILLEGAL, bool can_cast = false);
typedef enum { Relaxed, Opaque, Volatile, Acquire, Release } AccessKind;
DecoratorSet mo_decorator_for_access_kind(AccessKind kind);
bool inline_unsafe_access(bool is_store, BasicType type, AccessKind kind, bool is_unaligned);
static bool klass_needs_init_guard(Node* kls);
bool inline_unsafe_allocate();
bool inline_unsafe_newArray(bool uninitialized);
bool inline_unsafe_copyMemory();
bool inline_native_currentThread();
bool inline_native_time_funcs(address method, const char* funcName);
#ifdef JFR_HAVE_INTRINSICS
bool inline_native_classID();
bool inline_native_getEventWriter();
#endif
bool inline_native_isInterrupted();
bool inline_native_Class_query(vmIntrinsics::ID id);
bool inline_native_subtype_check();
bool inline_native_getLength();
bool inline_array_copyOf(bool is_copyOfRange);
bool inline_array_equals(StrIntrinsicNode::ArgEnc ae);
bool inline_preconditions_checkIndex();
void copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array);
bool inline_native_clone(bool is_virtual);
bool inline_native_Reflection_getCallerClass();
// Helper function for inlining native object hash method
bool inline_native_hashcode(bool is_virtual, bool is_static);
bool inline_native_getClass();
// Helper functions for inlining arraycopy
bool inline_arraycopy();
AllocateArrayNode* tightly_coupled_allocation(Node* ptr,
RegionNode* slow_region);
JVMState* arraycopy_restore_alloc_state(AllocateArrayNode* alloc, int& saved_reexecute_sp);
void arraycopy_move_allocation_here(AllocateArrayNode* alloc, Node* dest, JVMState* saved_jvms, int saved_reexecute_sp,
uint new_idx);
typedef enum { LS_get_add, LS_get_set, LS_cmp_swap, LS_cmp_swap_weak, LS_cmp_exchange } LoadStoreKind;
bool inline_unsafe_load_store(BasicType type, LoadStoreKind kind, AccessKind access_kind);
bool inline_unsafe_fence(vmIntrinsics::ID id);
bool inline_onspinwait();
bool inline_fp_conversions(vmIntrinsics::ID id);
bool inline_number_methods(vmIntrinsics::ID id);
bool inline_reference_get();
bool inline_Class_cast();
bool inline_aescrypt_Block(vmIntrinsics::ID id);
bool inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id);
bool inline_counterMode_AESCrypt(vmIntrinsics::ID id);
Node* inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting);
Node* inline_counterMode_AESCrypt_predicate();
Node* get_key_start_from_aescrypt_object(Node* aescrypt_object);
Node* get_original_key_start_from_aescrypt_object(Node* aescrypt_object);
bool inline_ghash_processBlocks();
bool inline_base64_encodeBlock();
bool inline_sha_implCompress(vmIntrinsics::ID id);
bool inline_digestBase_implCompressMB(int predicate);
bool inline_sha_implCompressMB(Node* digestBaseObj, ciInstanceKlass* instklass_SHA,
bool long_state, address stubAddr, const char *stubName,
Node* src_start, Node* ofs, Node* limit);
Node* get_state_from_sha_object(Node *sha_object);
Node* get_state_from_sha5_object(Node *sha_object);
Node* inline_digestBase_implCompressMB_predicate(int predicate);
bool inline_encodeISOArray();
bool inline_updateCRC32();
bool inline_updateBytesCRC32();
bool inline_updateByteBufferCRC32();
Node* get_table_from_crc32c_class(ciInstanceKlass *crc32c_class);
bool inline_updateBytesCRC32C();
bool inline_updateDirectByteBufferCRC32C();
bool inline_updateBytesAdler32();
bool inline_updateByteBufferAdler32();
bool inline_multiplyToLen();
bool inline_hasNegatives();
bool inline_squareToLen();
bool inline_mulAdd();
bool inline_montgomeryMultiply();
bool inline_montgomerySquare();
bool inline_vectorizedMismatch();
bool inline_fma(vmIntrinsics::ID id);
bool inline_character_compare(vmIntrinsics::ID id);
bool inline_profileBoolean();
bool inline_isCompileConstant();
void clear_upper_avx() {
#ifdef X86
if (UseAVX >= 2) {
C->set_clear_upper_avx(true);
}
#endif
}
};
//---------------------------make_vm_intrinsic----------------------------
CallGenerator* Compile::make_vm_intrinsic(ciMethod* m, bool is_virtual) {
vmIntrinsics::ID id = m->intrinsic_id();
assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
if (!m->is_loaded()) {
// Do not attempt to inline unloaded methods.
return NULL;
}
C2Compiler* compiler = (C2Compiler*)CompileBroker::compiler(CompLevel_full_optimization);
bool is_available = false;
{
// For calling is_intrinsic_supported and is_intrinsic_disabled_by_flag
// the compiler must transition to '_thread_in_vm' state because both
// methods access VM-internal data.
VM_ENTRY_MARK;
methodHandle mh(THREAD, m->get_Method());
is_available = compiler != NULL && compiler->is_intrinsic_supported(mh, is_virtual) &&
!C->directive()->is_intrinsic_disabled(mh) &&
!vmIntrinsics::is_disabled_by_flags(mh);
}
if (is_available) {
assert(id <= vmIntrinsics::LAST_COMPILER_INLINE, "caller responsibility");
assert(id != vmIntrinsics::_Object_init && id != vmIntrinsics::_invoke, "enum out of order?");
return new LibraryIntrinsic(m, is_virtual,
vmIntrinsics::predicates_needed(id),
vmIntrinsics::does_virtual_dispatch(id),
(vmIntrinsics::ID) id);
} else {
return NULL;
}
}
//----------------------register_library_intrinsics-----------------------
// Initialize this file's data structures, for each Compile instance.
void Compile::register_library_intrinsics() {
// Nothing to do here.
}
JVMState* LibraryIntrinsic::generate(JVMState* jvms) {
LibraryCallKit kit(jvms, this);
Compile* C = kit.C;
int nodes = C->unique();
#ifndef PRODUCT
if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
char buf[1000];
const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf));
tty->print_cr("Intrinsic %s", str);
}
#endif
ciMethod* callee = kit.callee();
const int bci = kit.bci();
// Try to inline the intrinsic.
if ((CheckIntrinsics ? callee->intrinsic_candidate() : true) &&
kit.try_to_inline(_last_predicate)) {
const char *inline_msg = is_virtual() ? "(intrinsic, virtual)"
: "(intrinsic)";
CompileTask::print_inlining_ul(callee, jvms->depth() - 1, bci, inline_msg);
if (C->print_intrinsics() || C->print_inlining()) {
C->print_inlining(callee, jvms->depth() - 1, bci, inline_msg);
}
C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked);
if (C->log()) {
C->log()->elem("intrinsic id='%s'%s nodes='%d'",
vmIntrinsics::name_at(intrinsic_id()),
(is_virtual() ? " virtual='1'" : ""),
C->unique() - nodes);
}
// Push the result from the inlined method onto the stack.
kit.push_result();
C->print_inlining_update(this);
return kit.transfer_exceptions_into_jvms();
}
// The intrinsic bailed out
if (jvms->has_method()) {
// Not a root compile.
const char* msg;
if (callee->intrinsic_candidate()) {
msg = is_virtual() ? "failed to inline (intrinsic, virtual)" : "failed to inline (intrinsic)";
} else {
msg = is_virtual() ? "failed to inline (intrinsic, virtual), method not annotated"
: "failed to inline (intrinsic), method not annotated";
}
CompileTask::print_inlining_ul(callee, jvms->depth() - 1, bci, msg);
if (C->print_intrinsics() || C->print_inlining()) {
C->print_inlining(callee, jvms->depth() - 1, bci, msg);
}
} else {
// Root compile
ResourceMark rm;
stringStream msg_stream;
msg_stream.print("Did not generate intrinsic %s%s at bci:%d in",
vmIntrinsics::name_at(intrinsic_id()),
is_virtual() ? " (virtual)" : "", bci);
const char *msg = msg_stream.as_string();
log_debug(jit, inlining)("%s", msg);
if (C->print_intrinsics() || C->print_inlining()) {
tty->print("%s", msg);
}
}
C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed);
C->print_inlining_update(this);
return NULL;
}
Node* LibraryIntrinsic::generate_predicate(JVMState* jvms, int predicate) {
LibraryCallKit kit(jvms, this);
Compile* C = kit.C;
int nodes = C->unique();
_last_predicate = predicate;
#ifndef PRODUCT
assert(is_predicated() && predicate < predicates_count(), "sanity");
if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
char buf[1000];
const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf));
tty->print_cr("Predicate for intrinsic %s", str);
}
#endif
ciMethod* callee = kit.callee();
const int bci = kit.bci();
Node* slow_ctl = kit.try_to_predicate(predicate);
if (!kit.failing()) {
const char *inline_msg = is_virtual() ? "(intrinsic, virtual, predicate)"
: "(intrinsic, predicate)";
CompileTask::print_inlining_ul(callee, jvms->depth() - 1, bci, inline_msg);
if (C->print_intrinsics() || C->print_inlining()) {
C->print_inlining(callee, jvms->depth() - 1, bci, inline_msg);
}
C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked);
if (C->log()) {
C->log()->elem("predicate_intrinsic id='%s'%s nodes='%d'",
vmIntrinsics::name_at(intrinsic_id()),
(is_virtual() ? " virtual='1'" : ""),
C->unique() - nodes);
}
return slow_ctl; // Could be NULL if the check folds.
}
// The intrinsic bailed out
if (jvms->has_method()) {
// Not a root compile.
const char* msg = "failed to generate predicate for intrinsic";
CompileTask::print_inlining_ul(kit.callee(), jvms->depth() - 1, bci, msg);
if (C->print_intrinsics() || C->print_inlining()) {
C->print_inlining(kit.callee(), jvms->depth() - 1, bci, msg);
}
} else {
// Root compile
ResourceMark rm;
stringStream msg_stream;
msg_stream.print("Did not generate intrinsic %s%s at bci:%d in",
vmIntrinsics::name_at(intrinsic_id()),
is_virtual() ? " (virtual)" : "", bci);
const char *msg = msg_stream.as_string();
log_debug(jit, inlining)("%s", msg);
if (C->print_intrinsics() || C->print_inlining()) {
C->print_inlining_stream()->print("%s", msg);
}
}
C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed);
return NULL;
}
bool LibraryCallKit::try_to_inline(int predicate) {
// Handle symbolic names for otherwise undistinguished boolean switches:
const bool is_store = true;
const bool is_compress = true;
const bool is_static = true;
const bool is_volatile = true;
if (!jvms()->has_method()) {
// Root JVMState has a null method.
assert(map()->memory()->Opcode() == Op_Parm, "");
// Insert the memory aliasing node
set_all_memory(reset_memory());
}
assert(merged_memory(), "");
switch (intrinsic_id()) {
case vmIntrinsics::_hashCode: return inline_native_hashcode(intrinsic()->is_virtual(), !is_static);
case vmIntrinsics::_identityHashCode: return inline_native_hashcode(/*!virtual*/ false, is_static);
case vmIntrinsics::_getClass: return inline_native_getClass();
case vmIntrinsics::_dsin:
case vmIntrinsics::_dcos:
case vmIntrinsics::_dtan:
case vmIntrinsics::_dabs:
case vmIntrinsics::_datan2:
case vmIntrinsics::_dsqrt:
case vmIntrinsics::_dexp:
case vmIntrinsics::_dlog:
case vmIntrinsics::_dlog10:
case vmIntrinsics::_dpow: return inline_math_native(intrinsic_id());
case vmIntrinsics::_min:
case vmIntrinsics::_max: return inline_min_max(intrinsic_id());
case vmIntrinsics::_notify:
case vmIntrinsics::_notifyAll:
if (ObjectMonitor::Knob_InlineNotify) {
return inline_notify(intrinsic_id());
}
return false;
case vmIntrinsics::_addExactI: return inline_math_addExactI(false /* add */);
case vmIntrinsics::_addExactL: return inline_math_addExactL(false /* add */);
case vmIntrinsics::_decrementExactI: return inline_math_subtractExactI(true /* decrement */);
case vmIntrinsics::_decrementExactL: return inline_math_subtractExactL(true /* decrement */);
case vmIntrinsics::_incrementExactI: return inline_math_addExactI(true /* increment */);
case vmIntrinsics::_incrementExactL: return inline_math_addExactL(true /* increment */);
case vmIntrinsics::_multiplyExactI: return inline_math_multiplyExactI();
case vmIntrinsics::_multiplyExactL: return inline_math_multiplyExactL();
case vmIntrinsics::_multiplyHigh: return inline_math_multiplyHigh();
case vmIntrinsics::_negateExactI: return inline_math_negateExactI();
case vmIntrinsics::_negateExactL: return inline_math_negateExactL();
case vmIntrinsics::_subtractExactI: return inline_math_subtractExactI(false /* subtract */);
case vmIntrinsics::_subtractExactL: return inline_math_subtractExactL(false /* subtract */);
case vmIntrinsics::_arraycopy: return inline_arraycopy();
case vmIntrinsics::_compareToL: return inline_string_compareTo(StrIntrinsicNode::LL);
case vmIntrinsics::_compareToU: return inline_string_compareTo(StrIntrinsicNode::UU);
case vmIntrinsics::_compareToLU: return inline_string_compareTo(StrIntrinsicNode::LU);
case vmIntrinsics::_compareToUL: return inline_string_compareTo(StrIntrinsicNode::UL);
case vmIntrinsics::_indexOfL: return inline_string_indexOf(StrIntrinsicNode::LL);
case vmIntrinsics::_indexOfU: return inline_string_indexOf(StrIntrinsicNode::UU);
case vmIntrinsics::_indexOfUL: return inline_string_indexOf(StrIntrinsicNode::UL);
case vmIntrinsics::_indexOfIL: return inline_string_indexOfI(StrIntrinsicNode::LL);
case vmIntrinsics::_indexOfIU: return inline_string_indexOfI(StrIntrinsicNode::UU);
case vmIntrinsics::_indexOfIUL: return inline_string_indexOfI(StrIntrinsicNode::UL);
case vmIntrinsics::_indexOfU_char: return inline_string_indexOfChar();
case vmIntrinsics::_equalsL: return inline_string_equals(StrIntrinsicNode::LL);
case vmIntrinsics::_equalsU: return inline_string_equals(StrIntrinsicNode::UU);
case vmIntrinsics::_toBytesStringU: return inline_string_toBytesU();
case vmIntrinsics::_getCharsStringU: return inline_string_getCharsU();
case vmIntrinsics::_getCharStringU: return inline_string_char_access(!is_store);
case vmIntrinsics::_putCharStringU: return inline_string_char_access( is_store);
case vmIntrinsics::_compressStringC:
case vmIntrinsics::_compressStringB: return inline_string_copy( is_compress);
case vmIntrinsics::_inflateStringC:
case vmIntrinsics::_inflateStringB: return inline_string_copy(!is_compress);
case vmIntrinsics::_getObject: return inline_unsafe_access(!is_store, T_OBJECT, Relaxed, false);
case vmIntrinsics::_getBoolean: return inline_unsafe_access(!is_store, T_BOOLEAN, Relaxed, false);
case vmIntrinsics::_getByte: return inline_unsafe_access(!is_store, T_BYTE, Relaxed, false);
case vmIntrinsics::_getShort: return inline_unsafe_access(!is_store, T_SHORT, Relaxed, false);
case vmIntrinsics::_getChar: return inline_unsafe_access(!is_store, T_CHAR, Relaxed, false);
case vmIntrinsics::_getInt: return inline_unsafe_access(!is_store, T_INT, Relaxed, false);
case vmIntrinsics::_getLong: return inline_unsafe_access(!is_store, T_LONG, Relaxed, false);
case vmIntrinsics::_getFloat: return inline_unsafe_access(!is_store, T_FLOAT, Relaxed, false);
case vmIntrinsics::_getDouble: return inline_unsafe_access(!is_store, T_DOUBLE, Relaxed, false);
case vmIntrinsics::_putObject: return inline_unsafe_access( is_store, T_OBJECT, Relaxed, false);
case vmIntrinsics::_putBoolean: return inline_unsafe_access( is_store, T_BOOLEAN, Relaxed, false);
case vmIntrinsics::_putByte: return inline_unsafe_access( is_store, T_BYTE, Relaxed, false);
case vmIntrinsics::_putShort: return inline_unsafe_access( is_store, T_SHORT, Relaxed, false);
case vmIntrinsics::_putChar: return inline_unsafe_access( is_store, T_CHAR, Relaxed, false);
case vmIntrinsics::_putInt: return inline_unsafe_access( is_store, T_INT, Relaxed, false);
case vmIntrinsics::_putLong: return inline_unsafe_access( is_store, T_LONG, Relaxed, false);
case vmIntrinsics::_putFloat: return inline_unsafe_access( is_store, T_FLOAT, Relaxed, false);
case vmIntrinsics::_putDouble: return inline_unsafe_access( is_store, T_DOUBLE, Relaxed, false);
case vmIntrinsics::_getObjectVolatile: return inline_unsafe_access(!is_store, T_OBJECT, Volatile, false);
case vmIntrinsics::_getBooleanVolatile: return inline_unsafe_access(!is_store, T_BOOLEAN, Volatile, false);
case vmIntrinsics::_getByteVolatile: return inline_unsafe_access(!is_store, T_BYTE, Volatile, false);
case vmIntrinsics::_getShortVolatile: return inline_unsafe_access(!is_store, T_SHORT, Volatile, false);
case vmIntrinsics::_getCharVolatile: return inline_unsafe_access(!is_store, T_CHAR, Volatile, false);
case vmIntrinsics::_getIntVolatile: return inline_unsafe_access(!is_store, T_INT, Volatile, false);
case vmIntrinsics::_getLongVolatile: return inline_unsafe_access(!is_store, T_LONG, Volatile, false);
case vmIntrinsics::_getFloatVolatile: return inline_unsafe_access(!is_store, T_FLOAT, Volatile, false);
case vmIntrinsics::_getDoubleVolatile: return inline_unsafe_access(!is_store, T_DOUBLE, Volatile, false);
case vmIntrinsics::_putObjectVolatile: return inline_unsafe_access( is_store, T_OBJECT, Volatile, false);
case vmIntrinsics::_putBooleanVolatile: return inline_unsafe_access( is_store, T_BOOLEAN, Volatile, false);
case vmIntrinsics::_putByteVolatile: return inline_unsafe_access( is_store, T_BYTE, Volatile, false);
case vmIntrinsics::_putShortVolatile: return inline_unsafe_access( is_store, T_SHORT, Volatile, false);
case vmIntrinsics::_putCharVolatile: return inline_unsafe_access( is_store, T_CHAR, Volatile, false);
case vmIntrinsics::_putIntVolatile: return inline_unsafe_access( is_store, T_INT, Volatile, false);
case vmIntrinsics::_putLongVolatile: return inline_unsafe_access( is_store, T_LONG, Volatile, false);
case vmIntrinsics::_putFloatVolatile: return inline_unsafe_access( is_store, T_FLOAT, Volatile, false);
case vmIntrinsics::_putDoubleVolatile: return inline_unsafe_access( is_store, T_DOUBLE, Volatile, false);
case vmIntrinsics::_getShortUnaligned: return inline_unsafe_access(!is_store, T_SHORT, Relaxed, true);
case vmIntrinsics::_getCharUnaligned: return inline_unsafe_access(!is_store, T_CHAR, Relaxed, true);
case vmIntrinsics::_getIntUnaligned: return inline_unsafe_access(!is_store, T_INT, Relaxed, true);
case vmIntrinsics::_getLongUnaligned: return inline_unsafe_access(!is_store, T_LONG, Relaxed, true);
case vmIntrinsics::_putShortUnaligned: return inline_unsafe_access( is_store, T_SHORT, Relaxed, true);
case vmIntrinsics::_putCharUnaligned: return inline_unsafe_access( is_store, T_CHAR, Relaxed, true);
case vmIntrinsics::_putIntUnaligned: return inline_unsafe_access( is_store, T_INT, Relaxed, true);
case vmIntrinsics::_putLongUnaligned: return inline_unsafe_access( is_store, T_LONG, Relaxed, true);
case vmIntrinsics::_getObjectAcquire: return inline_unsafe_access(!is_store, T_OBJECT, Acquire, false);
case vmIntrinsics::_getBooleanAcquire: return inline_unsafe_access(!is_store, T_BOOLEAN, Acquire, false);
case vmIntrinsics::_getByteAcquire: return inline_unsafe_access(!is_store, T_BYTE, Acquire, false);
case vmIntrinsics::_getShortAcquire: return inline_unsafe_access(!is_store, T_SHORT, Acquire, false);
case vmIntrinsics::_getCharAcquire: return inline_unsafe_access(!is_store, T_CHAR, Acquire, false);
case vmIntrinsics::_getIntAcquire: return inline_unsafe_access(!is_store, T_INT, Acquire, false);
case vmIntrinsics::_getLongAcquire: return inline_unsafe_access(!is_store, T_LONG, Acquire, false);
case vmIntrinsics::_getFloatAcquire: return inline_unsafe_access(!is_store, T_FLOAT, Acquire, false);
case vmIntrinsics::_getDoubleAcquire: return inline_unsafe_access(!is_store, T_DOUBLE, Acquire, false);
case vmIntrinsics::_putObjectRelease: return inline_unsafe_access( is_store, T_OBJECT, Release, false);
case vmIntrinsics::_putBooleanRelease: return inline_unsafe_access( is_store, T_BOOLEAN, Release, false);
case vmIntrinsics::_putByteRelease: return inline_unsafe_access( is_store, T_BYTE, Release, false);
case vmIntrinsics::_putShortRelease: return inline_unsafe_access( is_store, T_SHORT, Release, false);
case vmIntrinsics::_putCharRelease: return inline_unsafe_access( is_store, T_CHAR, Release, false);
case vmIntrinsics::_putIntRelease: return inline_unsafe_access( is_store, T_INT, Release, false);
case vmIntrinsics::_putLongRelease: return inline_unsafe_access( is_store, T_LONG, Release, false);
case vmIntrinsics::_putFloatRelease: return inline_unsafe_access( is_store, T_FLOAT, Release, false);
case vmIntrinsics::_putDoubleRelease: return inline_unsafe_access( is_store, T_DOUBLE, Release, false);
case vmIntrinsics::_getObjectOpaque: return inline_unsafe_access(!is_store, T_OBJECT, Opaque, false);
case vmIntrinsics::_getBooleanOpaque: return inline_unsafe_access(!is_store, T_BOOLEAN, Opaque, false);
case vmIntrinsics::_getByteOpaque: return inline_unsafe_access(!is_store, T_BYTE, Opaque, false);
case vmIntrinsics::_getShortOpaque: return inline_unsafe_access(!is_store, T_SHORT, Opaque, false);
case vmIntrinsics::_getCharOpaque: return inline_unsafe_access(!is_store, T_CHAR, Opaque, false);
case vmIntrinsics::_getIntOpaque: return inline_unsafe_access(!is_store, T_INT, Opaque, false);
case vmIntrinsics::_getLongOpaque: return inline_unsafe_access(!is_store, T_LONG, Opaque, false);
case vmIntrinsics::_getFloatOpaque: return inline_unsafe_access(!is_store, T_FLOAT, Opaque, false);
case vmIntrinsics::_getDoubleOpaque: return inline_unsafe_access(!is_store, T_DOUBLE, Opaque, false);
case vmIntrinsics::_putObjectOpaque: return inline_unsafe_access( is_store, T_OBJECT, Opaque, false);
case vmIntrinsics::_putBooleanOpaque: return inline_unsafe_access( is_store, T_BOOLEAN, Opaque, false);
case vmIntrinsics::_putByteOpaque: return inline_unsafe_access( is_store, T_BYTE, Opaque, false);
case vmIntrinsics::_putShortOpaque: return inline_unsafe_access( is_store, T_SHORT, Opaque, false);
case vmIntrinsics::_putCharOpaque: return inline_unsafe_access( is_store, T_CHAR, Opaque, false);
case vmIntrinsics::_putIntOpaque: return inline_unsafe_access( is_store, T_INT, Opaque, false);
case vmIntrinsics::_putLongOpaque: return inline_unsafe_access( is_store, T_LONG, Opaque, false);
case vmIntrinsics::_putFloatOpaque: return inline_unsafe_access( is_store, T_FLOAT, Opaque, false);
case vmIntrinsics::_putDoubleOpaque: return inline_unsafe_access( is_store, T_DOUBLE, Opaque, false);
case vmIntrinsics::_compareAndSetObject: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap, Volatile);
case vmIntrinsics::_compareAndSetByte: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap, Volatile);
case vmIntrinsics::_compareAndSetShort: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap, Volatile);
case vmIntrinsics::_compareAndSetInt: return inline_unsafe_load_store(T_INT, LS_cmp_swap, Volatile);
case vmIntrinsics::_compareAndSetLong: return inline_unsafe_load_store(T_LONG, LS_cmp_swap, Volatile);
case vmIntrinsics::_weakCompareAndSetObjectPlain: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Relaxed);
case vmIntrinsics::_weakCompareAndSetObjectAcquire: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Acquire);
case vmIntrinsics::_weakCompareAndSetObjectRelease: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Release);
case vmIntrinsics::_weakCompareAndSetObject: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Volatile);
case vmIntrinsics::_weakCompareAndSetBytePlain: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Relaxed);
case vmIntrinsics::_weakCompareAndSetByteAcquire: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Acquire);
case vmIntrinsics::_weakCompareAndSetByteRelease: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Release);
case vmIntrinsics::_weakCompareAndSetByte: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Volatile);
case vmIntrinsics::_weakCompareAndSetShortPlain: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Relaxed);
case vmIntrinsics::_weakCompareAndSetShortAcquire: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Acquire);
case vmIntrinsics::_weakCompareAndSetShortRelease: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Release);
case vmIntrinsics::_weakCompareAndSetShort: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Volatile);
case vmIntrinsics::_weakCompareAndSetIntPlain: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Relaxed);
case vmIntrinsics::_weakCompareAndSetIntAcquire: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Acquire);
case vmIntrinsics::_weakCompareAndSetIntRelease: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Release);
case vmIntrinsics::_weakCompareAndSetInt: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Volatile);
case vmIntrinsics::_weakCompareAndSetLongPlain: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Relaxed);
case vmIntrinsics::_weakCompareAndSetLongAcquire: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Acquire);
case vmIntrinsics::_weakCompareAndSetLongRelease: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Release);
case vmIntrinsics::_weakCompareAndSetLong: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Volatile);
case vmIntrinsics::_compareAndExchangeObject: return inline_unsafe_load_store(T_OBJECT, LS_cmp_exchange, Volatile);
case vmIntrinsics::_compareAndExchangeObjectAcquire: return inline_unsafe_load_store(T_OBJECT, LS_cmp_exchange, Acquire);
case vmIntrinsics::_compareAndExchangeObjectRelease: return inline_unsafe_load_store(T_OBJECT, LS_cmp_exchange, Release);
case vmIntrinsics::_compareAndExchangeByte: return inline_unsafe_load_store(T_BYTE, LS_cmp_exchange, Volatile);
case vmIntrinsics::_compareAndExchangeByteAcquire: return inline_unsafe_load_store(T_BYTE, LS_cmp_exchange, Acquire);
case vmIntrinsics::_compareAndExchangeByteRelease: return inline_unsafe_load_store(T_BYTE, LS_cmp_exchange, Release);
case vmIntrinsics::_compareAndExchangeShort: return inline_unsafe_load_store(T_SHORT, LS_cmp_exchange, Volatile);
case vmIntrinsics::_compareAndExchangeShortAcquire: return inline_unsafe_load_store(T_SHORT, LS_cmp_exchange, Acquire);
case vmIntrinsics::_compareAndExchangeShortRelease: return inline_unsafe_load_store(T_SHORT, LS_cmp_exchange, Release);
case vmIntrinsics::_compareAndExchangeInt: return inline_unsafe_load_store(T_INT, LS_cmp_exchange, Volatile);
case vmIntrinsics::_compareAndExchangeIntAcquire: return inline_unsafe_load_store(T_INT, LS_cmp_exchange, Acquire);
case vmIntrinsics::_compareAndExchangeIntRelease: return inline_unsafe_load_store(T_INT, LS_cmp_exchange, Release);
case vmIntrinsics::_compareAndExchangeLong: return inline_unsafe_load_store(T_LONG, LS_cmp_exchange, Volatile);
case vmIntrinsics::_compareAndExchangeLongAcquire: return inline_unsafe_load_store(T_LONG, LS_cmp_exchange, Acquire);
case vmIntrinsics::_compareAndExchangeLongRelease: return inline_unsafe_load_store(T_LONG, LS_cmp_exchange, Release);
case vmIntrinsics::_getAndAddByte: return inline_unsafe_load_store(T_BYTE, LS_get_add, Volatile);
case vmIntrinsics::_getAndAddShort: return inline_unsafe_load_store(T_SHORT, LS_get_add, Volatile);
case vmIntrinsics::_getAndAddInt: return inline_unsafe_load_store(T_INT, LS_get_add, Volatile);
case vmIntrinsics::_getAndAddLong: return inline_unsafe_load_store(T_LONG, LS_get_add, Volatile);
case vmIntrinsics::_getAndSetByte: return inline_unsafe_load_store(T_BYTE, LS_get_set, Volatile);
case vmIntrinsics::_getAndSetShort: return inline_unsafe_load_store(T_SHORT, LS_get_set, Volatile);
case vmIntrinsics::_getAndSetInt: return inline_unsafe_load_store(T_INT, LS_get_set, Volatile);
case vmIntrinsics::_getAndSetLong: return inline_unsafe_load_store(T_LONG, LS_get_set, Volatile);
case vmIntrinsics::_getAndSetObject: return inline_unsafe_load_store(T_OBJECT, LS_get_set, Volatile);
case vmIntrinsics::_loadFence:
case vmIntrinsics::_storeFence:
case vmIntrinsics::_fullFence: return inline_unsafe_fence(intrinsic_id());
case vmIntrinsics::_onSpinWait: return inline_onspinwait();
case vmIntrinsics::_currentThread: return inline_native_currentThread();
case vmIntrinsics::_isInterrupted: return inline_native_isInterrupted();
#ifdef JFR_HAVE_INTRINSICS
case vmIntrinsics::_counterTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, JFR_TIME_FUNCTION), "counterTime");
case vmIntrinsics::_getClassId: return inline_native_classID();
case vmIntrinsics::_getEventWriter: return inline_native_getEventWriter();
#endif
case vmIntrinsics::_currentTimeMillis: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeMillis), "currentTimeMillis");
case vmIntrinsics::_nanoTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeNanos), "nanoTime");
case vmIntrinsics::_allocateInstance: return inline_unsafe_allocate();
case vmIntrinsics::_copyMemory: return inline_unsafe_copyMemory();
case vmIntrinsics::_getLength: return inline_native_getLength();
case vmIntrinsics::_copyOf: return inline_array_copyOf(false);
case vmIntrinsics::_copyOfRange: return inline_array_copyOf(true);
case vmIntrinsics::_equalsB: return inline_array_equals(StrIntrinsicNode::LL);
case vmIntrinsics::_equalsC: return inline_array_equals(StrIntrinsicNode::UU);
case vmIntrinsics::_Preconditions_checkIndex: return inline_preconditions_checkIndex();
case vmIntrinsics::_clone: return inline_native_clone(intrinsic()->is_virtual());
case vmIntrinsics::_allocateUninitializedArray: return inline_unsafe_newArray(true);
case vmIntrinsics::_newArray: return inline_unsafe_newArray(false);
case vmIntrinsics::_isAssignableFrom: return inline_native_subtype_check();
case vmIntrinsics::_isInstance:
case vmIntrinsics::_getModifiers:
case vmIntrinsics::_isInterface:
case vmIntrinsics::_isArray:
case vmIntrinsics::_isPrimitive:
case vmIntrinsics::_getSuperclass:
case vmIntrinsics::_getClassAccessFlags: return inline_native_Class_query(intrinsic_id());
case vmIntrinsics::_floatToRawIntBits:
case vmIntrinsics::_floatToIntBits:
case vmIntrinsics::_intBitsToFloat:
case vmIntrinsics::_doubleToRawLongBits:
case vmIntrinsics::_doubleToLongBits:
case vmIntrinsics::_longBitsToDouble: return inline_fp_conversions(intrinsic_id());
case vmIntrinsics::_numberOfLeadingZeros_i:
case vmIntrinsics::_numberOfLeadingZeros_l:
case vmIntrinsics::_numberOfTrailingZeros_i:
case vmIntrinsics::_numberOfTrailingZeros_l:
case vmIntrinsics::_bitCount_i:
case vmIntrinsics::_bitCount_l:
case vmIntrinsics::_reverseBytes_i:
case vmIntrinsics::_reverseBytes_l:
case vmIntrinsics::_reverseBytes_s:
case vmIntrinsics::_reverseBytes_c: return inline_number_methods(intrinsic_id());
case vmIntrinsics::_getCallerClass: return inline_native_Reflection_getCallerClass();
case vmIntrinsics::_Reference_get: return inline_reference_get();
case vmIntrinsics::_Class_cast: return inline_Class_cast();
case vmIntrinsics::_aescrypt_encryptBlock:
case vmIntrinsics::_aescrypt_decryptBlock: return inline_aescrypt_Block(intrinsic_id());
case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
return inline_cipherBlockChaining_AESCrypt(intrinsic_id());
case vmIntrinsics::_counterMode_AESCrypt:
return inline_counterMode_AESCrypt(intrinsic_id());
case vmIntrinsics::_sha_implCompress:
case vmIntrinsics::_sha2_implCompress:
case vmIntrinsics::_sha5_implCompress:
return inline_sha_implCompress(intrinsic_id());
case vmIntrinsics::_digestBase_implCompressMB:
return inline_digestBase_implCompressMB(predicate);
case vmIntrinsics::_multiplyToLen:
return inline_multiplyToLen();
case vmIntrinsics::_squareToLen:
return inline_squareToLen();
case vmIntrinsics::_mulAdd:
return inline_mulAdd();
case vmIntrinsics::_montgomeryMultiply:
return inline_montgomeryMultiply();
case vmIntrinsics::_montgomerySquare:
return inline_montgomerySquare();
case vmIntrinsics::_vectorizedMismatch:
return inline_vectorizedMismatch();
case vmIntrinsics::_ghash_processBlocks:
return inline_ghash_processBlocks();
case vmIntrinsics::_base64_encodeBlock:
return inline_base64_encodeBlock();
case vmIntrinsics::_encodeISOArray:
case vmIntrinsics::_encodeByteISOArray:
return inline_encodeISOArray();
case vmIntrinsics::_updateCRC32:
return inline_updateCRC32();
case vmIntrinsics::_updateBytesCRC32:
return inline_updateBytesCRC32();
case vmIntrinsics::_updateByteBufferCRC32:
return inline_updateByteBufferCRC32();
case vmIntrinsics::_updateBytesCRC32C:
return inline_updateBytesCRC32C();
case vmIntrinsics::_updateDirectByteBufferCRC32C:
return inline_updateDirectByteBufferCRC32C();
case vmIntrinsics::_updateBytesAdler32:
return inline_updateBytesAdler32();
case vmIntrinsics::_updateByteBufferAdler32:
return inline_updateByteBufferAdler32();
case vmIntrinsics::_profileBoolean:
return inline_profileBoolean();
case vmIntrinsics::_isCompileConstant:
return inline_isCompileConstant();
case vmIntrinsics::_hasNegatives:
return inline_hasNegatives();
case vmIntrinsics::_fmaD:
case vmIntrinsics::_fmaF:
return inline_fma(intrinsic_id());
case vmIntrinsics::_isDigit:
case vmIntrinsics::_isLowerCase:
case vmIntrinsics::_isUpperCase:
case vmIntrinsics::_isWhitespace:
return inline_character_compare(intrinsic_id());
default:
// If you get here, it may be that someone has added a new intrinsic
// to the list in vmSymbols.hpp without implementing it here.
#ifndef PRODUCT
if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) {
tty->print_cr("*** Warning: Unimplemented intrinsic %s(%d)",
vmIntrinsics::name_at(intrinsic_id()), intrinsic_id());
}
#endif
return false;
}
}
Node* LibraryCallKit::try_to_predicate(int predicate) {
if (!jvms()->has_method()) {
// Root JVMState has a null method.
assert(map()->memory()->Opcode() == Op_Parm, "");
// Insert the memory aliasing node
set_all_memory(reset_memory());
}
assert(merged_memory(), "");
switch (intrinsic_id()) {
case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
return inline_cipherBlockChaining_AESCrypt_predicate(false);
case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
return inline_cipherBlockChaining_AESCrypt_predicate(true);
case vmIntrinsics::_counterMode_AESCrypt:
return inline_counterMode_AESCrypt_predicate();
case vmIntrinsics::_digestBase_implCompressMB:
return inline_digestBase_implCompressMB_predicate(predicate);
default:
// If you get here, it may be that someone has added a new intrinsic
// to the list in vmSymbols.hpp without implementing it here.
#ifndef PRODUCT
if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) {
tty->print_cr("*** Warning: Unimplemented predicate for intrinsic %s(%d)",
vmIntrinsics::name_at(intrinsic_id()), intrinsic_id());
}
#endif
Node* slow_ctl = control();
set_control(top()); // No fast path instrinsic
return slow_ctl;
}
}
//------------------------------set_result-------------------------------
// Helper function for finishing intrinsics.
void LibraryCallKit::set_result(RegionNode* region, PhiNode* value) {
record_for_igvn(region);
set_control(_gvn.transform(region));
set_result( _gvn.transform(value));
assert(value->type()->basic_type() == result()->bottom_type()->basic_type(), "sanity");
}
//------------------------------generate_guard---------------------------
// Helper function for generating guarded fast-slow graph structures.
// The given 'test', if true, guards a slow path. If the test fails
// then a fast path can be taken. (We generally hope it fails.)
// In all cases, GraphKit::control() is updated to the fast path.
// The returned value represents the control for the slow path.
// The return value is never 'top'; it is either a valid control
// or NULL if it is obvious that the slow path can never be taken.
// Also, if region and the slow control are not NULL, the slow edge
// is appended to the region.
Node* LibraryCallKit::generate_guard(Node* test, RegionNode* region, float true_prob) {
if (stopped()) {
// Already short circuited.
return NULL;
}
// Build an if node and its projections.
// If test is true we take the slow path, which we assume is uncommon.
if (_gvn.type(test) == TypeInt::ZERO) {
// The slow branch is never taken. No need to build this guard.
return NULL;
}
IfNode* iff = create_and_map_if(control(), test, true_prob, COUNT_UNKNOWN);
Node* if_slow = _gvn.transform(new IfTrueNode(iff));
if (if_slow == top()) {
// The slow branch is never taken. No need to build this guard.
return NULL;
}
if (region != NULL)
region->add_req(if_slow);
Node* if_fast = _gvn.transform(new IfFalseNode(iff));
set_control(if_fast);
return if_slow;
}
inline Node* LibraryCallKit::generate_slow_guard(Node* test, RegionNode* region) {
return generate_guard(test, region, PROB_UNLIKELY_MAG(3));
}
inline Node* LibraryCallKit::generate_fair_guard(Node* test, RegionNode* region) {
return generate_guard(test, region, PROB_FAIR);
}
inline Node* LibraryCallKit::generate_negative_guard(Node* index, RegionNode* region,
Node* *pos_index) {
if (stopped())
return NULL; // already stopped
if (_gvn.type(index)->higher_equal(TypeInt::POS)) // [0,maxint]
return NULL; // index is already adequately typed
Node* cmp_lt = _gvn.transform(new CmpINode(index, intcon(0)));
Node* bol_lt = _gvn.transform(new BoolNode(cmp_lt, BoolTest::lt));
Node* is_neg = generate_guard(bol_lt, region, PROB_MIN);
if (is_neg != NULL && pos_index != NULL) {
// Emulate effect of Parse::adjust_map_after_if.
Node* ccast = new CastIINode(index, TypeInt::POS);
ccast->set_req(0, control());
(*pos_index) = _gvn.transform(ccast);
}
return is_neg;
}
// Make sure that 'position' is a valid limit index, in [0..length].
// There are two equivalent plans for checking this:
// A. (offset + copyLength) unsigned<= arrayLength
// B. offset <= (arrayLength - copyLength)
// We require that all of the values above, except for the sum and
// difference, are already known to be non-negative.
// Plan A is robust in the face of overflow, if offset and copyLength
// are both hugely positive.
//
// Plan B is less direct and intuitive, but it does not overflow at
// all, since the difference of two non-negatives is always
// representable. Whenever Java methods must perform the equivalent
// check they generally use Plan B instead of Plan A.
// For the moment we use Plan A.
inline Node* LibraryCallKit::generate_limit_guard(Node* offset,
Node* subseq_length,
Node* array_length,
RegionNode* region) {
if (stopped())
return NULL; // already stopped
bool zero_offset = _gvn.type(offset) == TypeInt::ZERO;
if (zero_offset && subseq_length->eqv_uncast(array_length))
return NULL; // common case of whole-array copy
Node* last = subseq_length;
if (!zero_offset) // last += offset
last = _gvn.transform(new AddINode(last, offset));
Node* cmp_lt = _gvn.transform(new CmpUNode(array_length, last));
Node* bol_lt = _gvn.transform(new BoolNode(cmp_lt, BoolTest::lt));
Node* is_over = generate_guard(bol_lt, region, PROB_MIN);
return is_over;
}
// Emit range checks for the given String.value byte array
void LibraryCallKit::generate_string_range_check(Node* array, Node* offset, Node* count, bool char_count) {
if (stopped()) {
return; // already stopped
}
RegionNode* bailout = new RegionNode(1);
record_for_igvn(bailout);
if (char_count) {
// Convert char count to byte count
count = _gvn.transform(new LShiftINode(count, intcon(1)));
}
// Offset and count must not be negative
generate_negative_guard(offset, bailout);
generate_negative_guard(count, bailout);
// Offset + count must not exceed length of array
generate_limit_guard(offset, count, load_array_length(array), bailout);
if (bailout->req() > 1) {
PreserveJVMState pjvms(this);
set_control(_gvn.transform(bailout));
uncommon_trap(Deoptimization::Reason_intrinsic,
Deoptimization::Action_maybe_recompile);
}
}
//--------------------------generate_current_thread--------------------
Node* LibraryCallKit::generate_current_thread(Node* &tls_output) {
ciKlass* thread_klass = env()->Thread_klass();
const Type* thread_type = TypeOopPtr::make_from_klass(thread_klass)->cast_to_ptr_type(TypePtr::NotNull);
Node* thread = _gvn.transform(new ThreadLocalNode());
Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(JavaThread::threadObj_offset()));
Node* threadObj = make_load(NULL, p, thread_type, T_OBJECT, MemNode::unordered);
tls_output = thread;
return threadObj;
}
//------------------------------make_string_method_node------------------------
// Helper method for String intrinsic functions. This version is called with
// str1 and str2 pointing to byte[] nodes containing Latin1 or UTF16 encoded
// characters (depending on 'is_byte'). cnt1 and cnt2 are pointing to Int nodes
// containing the lengths of str1 and str2.
Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2, StrIntrinsicNode::ArgEnc ae) {
Node* result = NULL;
switch (opcode) {
case Op_StrIndexOf:
result = new StrIndexOfNode(control(), memory(TypeAryPtr::BYTES),
str1_start, cnt1, str2_start, cnt2, ae);
break;
case Op_StrComp:
result = new StrCompNode(control(), memory(TypeAryPtr::BYTES),
str1_start, cnt1, str2_start, cnt2, ae);
break;
case Op_StrEquals:
// We already know that cnt1 == cnt2 here (checked in 'inline_string_equals').
// Use the constant length if there is one because optimized match rule may exist.
result = new StrEqualsNode(control(), memory(TypeAryPtr::BYTES),
str1_start, str2_start, cnt2->is_Con() ? cnt2 : cnt1, ae);
break;
default:
ShouldNotReachHere();
return NULL;
}
// All these intrinsics have checks.
C->set_has_split_ifs(true); // Has chance for split-if optimization
clear_upper_avx();
return _gvn.transform(result);
}
//------------------------------inline_string_compareTo------------------------
bool LibraryCallKit::inline_string_compareTo(StrIntrinsicNode::ArgEnc ae) {
Node* arg1 = argument(0);
Node* arg2 = argument(1);
arg1 = must_be_not_null(arg1, true);
arg2 = must_be_not_null(arg2, true);
// Get start addr and length of first argument
Node* arg1_start = array_element_address(arg1, intcon(0), T_BYTE);
Node* arg1_cnt = load_array_length(arg1);
// Get start addr and length of second argument
Node* arg2_start = array_element_address(arg2, intcon(0), T_BYTE);
Node* arg2_cnt = load_array_length(arg2);
Node* result = make_string_method_node(Op_StrComp, arg1_start, arg1_cnt, arg2_start, arg2_cnt, ae);
set_result(result);
return true;
}
//------------------------------inline_string_equals------------------------
bool LibraryCallKit::inline_string_equals(StrIntrinsicNode::ArgEnc ae) {
Node* arg1 = argument(0);
Node* arg2 = argument(1);
// paths (plus control) merge
RegionNode* region = new RegionNode(3);
Node* phi = new PhiNode(region, TypeInt::BOOL);
if (!stopped()) {
arg1 = must_be_not_null(arg1, true);
arg2 = must_be_not_null(arg2, true);
// Get start addr and length of first argument
Node* arg1_start = array_element_address(arg1, intcon(0), T_BYTE);
Node* arg1_cnt = load_array_length(arg1);
// Get start addr and length of second argument
Node* arg2_start = array_element_address(arg2, intcon(0), T_BYTE);
Node* arg2_cnt = load_array_length(arg2);
// Check for arg1_cnt != arg2_cnt
Node* cmp = _gvn.transform(new CmpINode(arg1_cnt, arg2_cnt));
Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::ne));
Node* if_ne = generate_slow_guard(bol, NULL);
if (if_ne != NULL) {
phi->init_req(2, intcon(0));
region->init_req(2, if_ne);
}
// Check for count == 0 is done by assembler code for StrEquals.
if (!stopped()) {
Node* equals = make_string_method_node(Op_StrEquals, arg1_start, arg1_cnt, arg2_start, arg2_cnt, ae);
phi->init_req(1, equals);
region->init_req(1, control());
}
}
// post merge
set_control(_gvn.transform(region));
record_for_igvn(region);
set_result(_gvn.transform(phi));
return true;
}
//------------------------------inline_array_equals----------------------------
bool LibraryCallKit::inline_array_equals(StrIntrinsicNode::ArgEnc ae) {
assert(ae == StrIntrinsicNode::UU || ae == StrIntrinsicNode::LL, "unsupported array types");
Node* arg1 = argument(0);
Node* arg2 = argument(1);
const TypeAryPtr* mtype = (ae == StrIntrinsicNode::UU) ? TypeAryPtr::CHARS : TypeAryPtr::BYTES;
set_result(_gvn.transform(new AryEqNode(control(), memory(mtype), arg1, arg2, ae)));
clear_upper_avx();
return true;
}
//------------------------------inline_hasNegatives------------------------------
bool LibraryCallKit::inline_hasNegatives() {
if (too_many_traps(Deoptimization::Reason_intrinsic)) {
return false;
}
assert(callee()->signature()->size() == 3, "hasNegatives has 3 parameters");
// no receiver since it is static method
Node* ba = argument(0);
Node* offset = argument(1);
Node* len = argument(2);
ba = must_be_not_null(ba, true);
// Range checks
generate_string_range_check(ba, offset, len, false);
if (stopped()) {
return true;
}
Node* ba_start = array_element_address(ba, offset, T_BYTE);
Node* result = new HasNegativesNode(control(), memory(TypeAryPtr::BYTES), ba_start, len);
set_result(_gvn.transform(result));
return true;
}
bool LibraryCallKit::inline_preconditions_checkIndex() {
Node* index = argument(0);
Node* length = argument(1);
if (too_many_traps(Deoptimization::Reason_intrinsic) || too_many_traps(Deoptimization::Reason_range_check)) {
return false;
}
Node* len_pos_cmp = _gvn.transform(new CmpINode(length, intcon(0)));
Node* len_pos_bol = _gvn.transform(new BoolNode(len_pos_cmp, BoolTest::ge));
{
BuildCutout unless(this, len_pos_bol, PROB_MAX);
uncommon_trap(Deoptimization::Reason_intrinsic,
Deoptimization::Action_make_not_entrant);
}
if (stopped()) {
return false;
}
Node* rc_cmp = _gvn.transform(new CmpUNode(index, length));
BoolTest::mask btest = BoolTest::lt;
Node* rc_bool = _gvn.transform(new BoolNode(rc_cmp, btest));
RangeCheckNode* rc = new RangeCheckNode(control(), rc_bool, PROB_MAX, COUNT_UNKNOWN);
_gvn.set_type(rc, rc->Value(&_gvn));
if (!rc_bool->is_Con()) {
record_for_igvn(rc);
}
set_control(_gvn.transform(new IfTrueNode(rc)));
{
PreserveJVMState pjvms(this);
set_control(_gvn.transform(new IfFalseNode(rc)));
uncommon_trap(Deoptimization::Reason_range_check,
Deoptimization::Action_make_not_entrant);
}
if (stopped()) {
return false;
}
Node* result = new CastIINode(index, TypeInt::make(0, _gvn.type(length)->is_int()->_hi, Type::WidenMax));
result->set_req(0, control());
result = _gvn.transform(result);
set_result(result);
replace_in_map(index, result);
clear_upper_avx();
return true;
}
//------------------------------inline_string_indexOf------------------------
bool LibraryCallKit::inline_string_indexOf(StrIntrinsicNode::ArgEnc ae) {
if (!Matcher::match_rule_supported(Op_StrIndexOf)) {
return false;
}
Node* src = argument(0);
Node* tgt = argument(1);
// Make the merge point
RegionNode* result_rgn = new RegionNode(4);
Node* result_phi = new PhiNode(result_rgn, TypeInt::INT);
src = must_be_not_null(src, true);
tgt = must_be_not_null(tgt, true);
// Get start addr and length of source string
Node* src_start = array_element_address(src, intcon(0), T_BYTE);
Node* src_count = load_array_length(src);
// Get start addr and length of substring
Node* tgt_start = array_element_address(tgt, intcon(0), T_BYTE);
Node* tgt_count = load_array_length(tgt);
if (ae == StrIntrinsicNode::UU || ae == StrIntrinsicNode::UL) {
// Divide src size by 2 if String is UTF16 encoded
src_count = _gvn.transform(new RShiftINode(src_count, intcon(1)));
}
if (ae == StrIntrinsicNode::UU) {
// Divide substring size by 2 if String is UTF16 encoded
tgt_count = _gvn.transform(new RShiftINode(tgt_count, intcon(1)));
}
Node* result = make_indexOf_node(src_start, src_count, tgt_start, tgt_count, result_rgn, result_phi, ae);
if (result != NULL) {
result_phi->init_req(3, result);
result_rgn->init_req(3, control());
}
set_control(_gvn.transform(result_rgn));
record_for_igvn(result_rgn);
set_result(_gvn.transform(result_phi));
return true;
}
//-----------------------------inline_string_indexOf-----------------------
bool LibraryCallKit::inline_string_indexOfI(StrIntrinsicNode::ArgEnc ae) {
if (too_many_traps(Deoptimization::Reason_intrinsic)) {
return false;
}
if (!Matcher::match_rule_supported(Op_StrIndexOf)) {
return false;
}
assert(callee()->signature()->size() == 5, "String.indexOf() has 5 arguments");
Node* src = argument(0); // byte[]
Node* src_count = argument(1); // char count
Node* tgt = argument(2); // byte[]
Node* tgt_count = argument(3); // char count
Node* from_index = argument(4); // char index
src = must_be_not_null(src, true);
tgt = must_be_not_null(tgt, true);
// Multiply byte array index by 2 if String is UTF16 encoded
Node* src_offset = (ae == StrIntrinsicNode::LL) ? from_index : _gvn.transform(new LShiftINode(from_index, intcon(1)));
src_count = _gvn.transform(new SubINode(src_count, from_index));
Node* src_start = array_element_address(src, src_offset, T_BYTE);
Node* tgt_start = array_element_address(tgt, intcon(0), T_BYTE);
// Range checks
generate_string_range_check(src, src_offset, src_count, ae != StrIntrinsicNode::LL);
generate_string_range_check(tgt, intcon(0), tgt_count, ae == StrIntrinsicNode::UU);
if (stopped()) {
return true;
}
RegionNode* region = new RegionNode(5);
Node* phi = new PhiNode(region, TypeInt::INT);
Node* result = make_indexOf_node(src_start, src_count, tgt_start, tgt_count, region, phi, ae);
if (result != NULL) {
// The result is index relative to from_index if substring was found, -1 otherwise.
// Generate code which will fold into cmove.
Node* cmp = _gvn.transform(new CmpINode(result, intcon(0)));
Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::lt));
Node* if_lt = generate_slow_guard(bol, NULL);
if (if_lt != NULL) {
// result == -1
phi->init_req(3, result);
region->init_req(3, if_lt);
}
if (!stopped()) {
result = _gvn.transform(new AddINode(result, from_index));
phi->init_req(4, result);
region->init_req(4, control());
}
}
set_control(_gvn.transform(region));
record_for_igvn(region);
set_result(_gvn.transform(phi));
clear_upper_avx();
return true;
}
// Create StrIndexOfNode with fast path checks
Node* LibraryCallKit::make_indexOf_node(Node* src_start, Node* src_count, Node* tgt_start, Node* tgt_count,
RegionNode* region, Node* phi, StrIntrinsicNode::ArgEnc ae) {
// Check for substr count > string count
Node* cmp = _gvn.transform(new CmpINode(tgt_count, src_count));
Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::gt));
Node* if_gt = generate_slow_guard(bol, NULL);
if (if_gt != NULL) {
phi->init_req(1, intcon(-1));
region->init_req(1, if_gt);
}
if (!stopped()) {
// Check for substr count == 0
cmp = _gvn.transform(new CmpINode(tgt_count, intcon(0)));
bol = _gvn.transform(new BoolNode(cmp, BoolTest::eq));
Node* if_zero = generate_slow_guard(bol, NULL);
if (if_zero != NULL) {
phi->init_req(2, intcon(0));
region->init_req(2, if_zero);
}
}
if (!stopped()) {
return make_string_method_node(Op_StrIndexOf, src_start, src_count, tgt_start, tgt_count, ae);
}
return NULL;
}
//-----------------------------inline_string_indexOfChar-----------------------
bool LibraryCallKit::inline_string_indexOfChar() {
if (too_many_traps(Deoptimization::Reason_intrinsic)) {
return false;
}
if (!Matcher::match_rule_supported(Op_StrIndexOfChar)) {
return false;
}
assert(callee()->signature()->size() == 4, "String.indexOfChar() has 4 arguments");
Node* src = argument(0); // byte[]
Node* tgt = argument(1); // tgt is int ch
Node* from_index = argument(2);
Node* max = argument(3);
src = must_be_not_null(src, true);
Node* src_offset = _gvn.transform(new LShiftINode(from_index, intcon(1)));
Node* src_start = array_element_address(src, src_offset, T_BYTE);
Node* src_count = _gvn.transform(new SubINode(max, from_index));
// Range checks
generate_string_range_check(src, src_offset, src_count, true);
if (stopped()) {
return true;
}
RegionNode* region = new RegionNode(3);
Node* phi = new PhiNode(region, TypeInt::INT);
Node* result = new StrIndexOfCharNode(control(), memory(TypeAryPtr::BYTES), src_start, src_count, tgt, StrIntrinsicNode::none);
C->set_has_split_ifs(true); // Has chance for split-if optimization
_gvn.transform(result);
Node* cmp = _gvn.transform(new CmpINode(result, intcon(0)));
Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::lt));
Node* if_lt = generate_slow_guard(bol, NULL);
if (if_lt != NULL) {
// result == -1
phi->init_req(2, result);
region->init_req(2, if_lt);
}
if (!stopped()) {
result = _gvn.transform(new AddINode(result, from_index));
phi->init_req(1, result);
region->init_req(1, control());
}
set_control(_gvn.transform(region));
record_for_igvn(region);
set_result(_gvn.transform(phi));
return true;
}
//---------------------------inline_string_copy---------------------
// compressIt == true --> generate a compressed copy operation (compress char[]/byte[] to byte[])
// int StringUTF16.compress(char[] src, int srcOff, byte[] dst, int dstOff, int len)
// int StringUTF16.compress(byte[] src, int srcOff, byte[] dst, int dstOff, int len)
// compressIt == false --> generate an inflated copy operation (inflate byte[] to char[]/byte[])
// void StringLatin1.inflate(byte[] src, int srcOff, char[] dst, int dstOff, int len)
// void StringLatin1.inflate(byte[] src, int srcOff, byte[] dst, int dstOff, int len)
bool LibraryCallKit::inline_string_copy(bool compress) {
if (too_many_traps(Deoptimization::Reason_intrinsic)) {
return false;
}
int nargs = 5; // 2 oops, 3 ints
assert(callee()->signature()->size() == nargs, "string copy has 5 arguments");
Node* src = argument(0);
Node* src_offset = argument(1);
Node* dst = argument(2);
Node* dst_offset = argument(3);
Node* length = argument(4);
// Check for allocation before we add nodes that would confuse
// tightly_coupled_allocation()
AllocateArrayNode* alloc = tightly_coupled_allocation(dst, NULL);
// Figure out the size and type of the elements we will be copying.
const Type* src_type = src->Value(&_gvn);
const Type* dst_type = dst->Value(&_gvn);
BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type();
BasicType dst_elem = dst_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type();
assert((compress && dst_elem == T_BYTE && (src_elem == T_BYTE || src_elem == T_CHAR)) ||
(!compress && src_elem == T_BYTE && (dst_elem == T_BYTE || dst_elem == T_CHAR)),
"Unsupported array types for inline_string_copy");
src = must_be_not_null(src, true);
dst = must_be_not_null(dst, true);
// Convert char[] offsets to byte[] offsets
bool convert_src = (compress && src_elem == T_BYTE);
bool convert_dst = (!compress && dst_elem == T_BYTE);
if (convert_src) {
src_offset = _gvn.transform(new LShiftINode(src_offset, intcon(1)));
} else if (convert_dst) {
dst_offset = _gvn.transform(new LShiftINode(dst_offset, intcon(1)));
}
// Range checks
generate_string_range_check(src, src_offset, length, convert_src);
generate_string_range_check(dst, dst_offset, length, convert_dst);
if (stopped()) {
return true;
}
Node* src_start = array_element_address(src, src_offset, src_elem);
Node* dst_start = array_element_address(dst, dst_offset, dst_elem);
// 'src_start' points to src array + scaled offset
// 'dst_start' points to dst array + scaled offset
Node* count = NULL;
if (compress) {
count = compress_string(src_start, TypeAryPtr::get_array_body_type(src_elem), dst_start, length);
} else {
inflate_string(src_start, dst_start, TypeAryPtr::get_array_body_type(dst_elem), length);
}
if (alloc != NULL) {
if (alloc->maybe_set_complete(&_gvn)) {
// "You break it, you buy it."
InitializeNode* init = alloc->initialization();
assert(init->is_complete(), "we just did this");
init->set_complete_with_arraycopy();
assert(dst->is_CheckCastPP(), "sanity");
assert(dst->in(0)->in(0) == init, "dest pinned");
}
// Do not let stores that initialize this object be reordered with
// a subsequent store that would make this object accessible by
// other threads.
// Record what AllocateNode this StoreStore protects so that
// escape analysis can go from the MemBarStoreStoreNode to the
// AllocateNode and eliminate the MemBarStoreStoreNode if possible
// based on the escape status of the AllocateNode.
insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress));
}
if (compress) {
set_result(_gvn.transform(count));
}
clear_upper_avx();
return true;
}
#ifdef _LP64
#define XTOP ,top() /*additional argument*/
#else //_LP64
#define XTOP /*no additional argument*/
#endif //_LP64
//------------------------inline_string_toBytesU--------------------------
// public static byte[] StringUTF16.toBytes(char[] value, int off, int len)
bool LibraryCallKit::inline_string_toBytesU() {
if (too_many_traps(Deoptimization::Reason_intrinsic)) {
return false;
}
// Get the arguments.
Node* value = argument(0);
Node* offset = argument(1);
Node* length = argument(2);
Node* newcopy = NULL;
// Set the original stack and the reexecute bit for the interpreter to reexecute
// the bytecode that invokes StringUTF16.toBytes() if deoptimization happens.
{ PreserveReexecuteState preexecs(this);
jvms()->set_should_reexecute(true);
// Check if a null path was taken unconditionally.
value = null_check(value);
RegionNode* bailout = new RegionNode(1);
record_for_igvn(bailout);
// Range checks
generate_negative_guard(offset, bailout);
generate_negative_guard(length, bailout);
generate_limit_guard(offset, length, load_array_length(value), bailout);
// Make sure that resulting byte[] length does not overflow Integer.MAX_VALUE
generate_limit_guard(length, intcon(0), intcon(max_jint/2), bailout);
if (bailout->req() > 1) {
PreserveJVMState pjvms(this);
set_control(_gvn.transform(bailout));
uncommon_trap(Deoptimization::Reason_intrinsic,
Deoptimization::Action_maybe_recompile);
}
if (stopped()) {
return true;
}
Node* size = _gvn.transform(new LShiftINode(length, intcon(1)));
Node* klass_node = makecon(TypeKlassPtr::make(ciTypeArrayKlass::make(T_BYTE)));
newcopy = new_array(klass_node, size, 0); // no arguments to push
AllocateArrayNode* alloc = tightly_coupled_allocation(newcopy, NULL);
// Calculate starting addresses.
Node* src_start = array_element_address(value, offset, T_CHAR);
Node* dst_start = basic_plus_adr(newcopy, arrayOopDesc::base_offset_in_bytes(T_BYTE));
// Check if src array address is aligned to HeapWordSize (dst is always aligned)
const TypeInt* toffset = gvn().type(offset)->is_int();
bool aligned = toffset->is_con() && ((toffset->get_con() * type2aelembytes(T_CHAR)) % HeapWordSize == 0);
// Figure out which arraycopy runtime method to call (disjoint, uninitialized).
const char* copyfunc_name = "arraycopy";
address copyfunc_addr = StubRoutines::select_arraycopy_function(T_CHAR, aligned, true, copyfunc_name, true);
Node* call = make_runtime_call(RC_LEAF|RC_NO_FP,
OptoRuntime::fast_arraycopy_Type(),
copyfunc_addr, copyfunc_name, TypeRawPtr::BOTTOM,
src_start, dst_start, ConvI2X(length) XTOP);
// Do not let reads from the cloned object float above the arraycopy.
if (alloc != NULL) {
if (alloc->maybe_set_complete(&_gvn)) {
// "You break it, you buy it."
InitializeNode* init = alloc->initialization();
assert(init->is_complete(), "we just did this");
init->set_complete_with_arraycopy();
assert(newcopy->is_CheckCastPP(), "sanity");
assert(newcopy->in(0)->in(0) == init, "dest pinned");
}
// Do not let stores that initialize this object be reordered with
// a subsequent store that would make this object accessible by
// other threads.
// Record what AllocateNode this StoreStore protects so that
// escape analysis can go from the MemBarStoreStoreNode to the
// AllocateNode and eliminate the MemBarStoreStoreNode if possible
// based on the escape status of the AllocateNode.
insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress));
} else {
insert_mem_bar(Op_MemBarCPUOrder);
}
} // original reexecute is set back here
C->set_has_split_ifs(true); // Has chance for split-if optimization
if (!stopped()) {
set_result(newcopy);
}
clear_upper_avx();
return true;
}
//------------------------inline_string_getCharsU--------------------------
// public void StringUTF16.getChars(byte[] src, int srcBegin, int srcEnd, char dst[], int dstBegin)
bool LibraryCallKit::inline_string_getCharsU() {
if (too_many_traps(Deoptimization::Reason_intrinsic)) {
return false;
}
// Get the arguments.
Node* src = argument(0);
Node* src_begin = argument(1);
Node* src_end = argument(2); // exclusive offset (i < src_end)
Node* dst = argument(3);
Node* dst_begin = argument(4);
// Check for allocation before we add nodes that would confuse
// tightly_coupled_allocation()
AllocateArrayNode* alloc = tightly_coupled_allocation(dst, NULL);
// Check if a null path was taken unconditionally.
src = null_check(src);
dst = null_check(dst);
if (stopped()) {
return true;
}
// Get length and convert char[] offset to byte[] offset
Node* length = _gvn.transform(new SubINode(src_end, src_begin));
src_begin = _gvn.transform(new LShiftINode(src_begin, intcon(1)));
// Range checks
generate_string_range_check(src, src_begin, length, true);
generate_string_range_check(dst, dst_begin, length, false);
if (stopped()) {
return true;
}
if (!stopped()) {
// Calculate starting addresses.
Node* src_start = array_element_address(src, src_begin, T_BYTE);
Node* dst_start = array_element_address(dst, dst_begin, T_CHAR);
// Check if array addresses are aligned to HeapWordSize
const TypeInt* tsrc = gvn().type(src_begin)->is_int();
const TypeInt* tdst = gvn().type(dst_begin)->is_int();
bool aligned = tsrc->is_con() && ((tsrc->get_con() * type2aelembytes(T_BYTE)) % HeapWordSize == 0) &&
tdst->is_con() && ((tdst->get_con() * type2aelembytes(T_CHAR)) % HeapWordSize == 0);
// Figure out which arraycopy runtime method to call (disjoint, uninitialized).
const char* copyfunc_name = "arraycopy";
address copyfunc_addr = StubRoutines::select_arraycopy_function(T_CHAR, aligned, true, copyfunc_name, true);
Node* call = make_runtime_call(RC_LEAF|RC_NO_FP,
OptoRuntime::fast_arraycopy_Type(),
copyfunc_addr, copyfunc_name, TypeRawPtr::BOTTOM,
src_start, dst_start, ConvI2X(length) XTOP);
// Do not let reads from the cloned object float above the arraycopy.
if (alloc != NULL) {
if (alloc->maybe_set_complete(&_gvn)) {
// "You break it, you buy it."
InitializeNode* init = alloc->initialization();
assert(init->is_complete(), "we just did this");
init->set_complete_with_arraycopy();
assert(dst->is_CheckCastPP(), "sanity");
assert(dst->in(0)->in(0) == init, "dest pinned");
}
// Do not let stores that initialize this object be reordered with
// a subsequent store that would make this object accessible by
// other threads.
// Record what AllocateNode this StoreStore protects so that
// escape analysis can go from the MemBarStoreStoreNode to the
// AllocateNode and eliminate the MemBarStoreStoreNode if possible
// based on the escape status of the AllocateNode.
insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress));
} else {
insert_mem_bar(Op_MemBarCPUOrder);
}
}
C->set_has_split_ifs(true); // Has chance for split-if optimization
return true;
}
//----------------------inline_string_char_access----------------------------
// Store/Load char to/from byte[] array.
// static void StringUTF16.putChar(byte[] val, int index, int c)
// static char StringUTF16.getChar(byte[] val, int index)
bool LibraryCallKit::inline_string_char_access(bool is_store) {
Node* value = argument(0);
Node* index = argument(1);
Node* ch = is_store ? argument(2) : NULL;
// This intrinsic accesses byte[] array as char[] array. Computing the offsets
// correctly requires matched array shapes.
assert (arrayOopDesc::base_offset_in_bytes(T_CHAR) == arrayOopDesc::base_offset_in_bytes(T_BYTE),
"sanity: byte[] and char[] bases agree");
assert (type2aelembytes(T_CHAR) == type2aelembytes(T_BYTE)*2,
"sanity: byte[] and char[] scales agree");
// Bail when getChar over constants is requested: constant folding would
// reject folding mismatched char access over byte[]. A normal inlining for getChar
// Java method would constant fold nicely instead.
if (!is_store && value->is_Con() && index->is_Con()) {
return false;
}
value = must_be_not_null(value, true);
Node* adr = array_element_address(value, index, T_CHAR);
if (adr->is_top()) {
return false;
}
if (is_store) {
(void) store_to_memory(control(), adr, ch, T_CHAR, TypeAryPtr::BYTES, MemNode::unordered,
false, false, true /* mismatched */);
} else {
ch = make_load(control(), adr, TypeInt::CHAR, T_CHAR, TypeAryPtr::BYTES, MemNode::unordered,
LoadNode::DependsOnlyOnTest, false, false, true /* mismatched */);
set_result(ch);
}
return true;
}
//--------------------------round_double_node--------------------------------
// Round a double node if necessary.
Node* LibraryCallKit::round_double_node(Node* n) {
if (Matcher::strict_fp_requires_explicit_rounding && UseSSE <= 1)
n = _gvn.transform(new RoundDoubleNode(0, n));
return n;
}
//------------------------------inline_math-----------------------------------
// public static double Math.abs(double)
// public static double Math.sqrt(double)
// public static double Math.log(double)
// public static double Math.log10(double)
bool LibraryCallKit::inline_math(vmIntrinsics::ID id) {
Node* arg = round_double_node(argument(0));
Node* n = NULL;
switch (id) {
case vmIntrinsics::_dabs: n = new AbsDNode( arg); break;
case vmIntrinsics::_dsqrt: n = new SqrtDNode(C, control(), arg); break;
default: fatal_unexpected_iid(id); break;
}
set_result(_gvn.transform(n));
return true;
}
//------------------------------runtime_math-----------------------------
bool LibraryCallKit::runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName) {
assert(call_type == OptoRuntime::Math_DD_D_Type() || call_type == OptoRuntime::Math_D_D_Type(),
"must be (DD)D or (D)D type");
// Inputs
Node* a = round_double_node(argument(0));
Node* b = (call_type == OptoRuntime::Math_DD_D_Type()) ? round_double_node(argument(2)) : NULL;
const TypePtr* no_memory_effects = NULL;
Node* trig = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName,
no_memory_effects,
a, top(), b, b ? top() : NULL);
Node* value = _gvn.transform(new ProjNode(trig, TypeFunc::Parms+0));
#ifdef ASSERT
Node* value_top = _gvn.transform(new ProjNode(trig, TypeFunc::Parms+1));
assert(value_top == top(), "second value must be top");
#endif
set_result(value);
return true;
}
//------------------------------inline_math_native-----------------------------
bool LibraryCallKit::inline_math_native(vmIntrinsics::ID id) {
#define FN_PTR(f) CAST_FROM_FN_PTR(address, f)
switch (id) {
// These intrinsics are not properly supported on all hardware
case vmIntrinsics::_dsin:
return StubRoutines::dsin() != NULL ?
runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dsin(), "dsin") :
runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dsin), "SIN");
case vmIntrinsics::_dcos:
return StubRoutines::dcos() != NULL ?
runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dcos(), "dcos") :
runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dcos), "COS");
case vmIntrinsics::_dtan:
return StubRoutines::dtan() != NULL ?
runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dtan(), "dtan") :
runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dtan), "TAN");
case vmIntrinsics::_dlog:
return StubRoutines::dlog() != NULL ?
runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dlog(), "dlog") :
runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog), "LOG");
case vmIntrinsics::_dlog10:
return StubRoutines::dlog10() != NULL ?
runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dlog10(), "dlog10") :
runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog10), "LOG10");
// These intrinsics are supported on all hardware
case vmIntrinsics::_dsqrt: return Matcher::match_rule_supported(Op_SqrtD) ? inline_math(id) : false;
case vmIntrinsics::_dabs: return Matcher::has_match_rule(Op_AbsD) ? inline_math(id) : false;
case vmIntrinsics::_dexp:
return StubRoutines::dexp() != NULL ?
runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dexp(), "dexp") :
runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dexp), "EXP");
case vmIntrinsics::_dpow: {
Node* exp = round_double_node(argument(2));
const TypeD* d = _gvn.type(exp)->isa_double_constant();
if (d != NULL && d->getd() == 2.0) {
// Special case: pow(x, 2.0) => x * x
Node* base = round_double_node(argument(0));
set_result(_gvn.transform(new MulDNode(base, base)));
return true;
}
return StubRoutines::dexp() != NULL ?
runtime_math(OptoRuntime::Math_DD_D_Type(), StubRoutines::dpow(), "dpow") :
runtime_math(OptoRuntime::Math_DD_D_Type(), FN_PTR(SharedRuntime::dpow), "POW");
}
#undef FN_PTR
// These intrinsics are not yet correctly implemented
case vmIntrinsics::_datan2:
return false;
default:
fatal_unexpected_iid(id);
return false;
}
}
static bool is_simple_name(Node* n) {
return (n->req() == 1 // constant
|| (n->is_Type() && n->as_Type()->type()->singleton())
|| n->is_Proj() // parameter or return value
|| n->is_Phi() // local of some sort
);
}
//----------------------------inline_notify-----------------------------------*
bool LibraryCallKit::inline_notify(vmIntrinsics::ID id) {
const TypeFunc* ftype = OptoRuntime::monitor_notify_Type();
address func;
if (id == vmIntrinsics::_notify) {
func = OptoRuntime::monitor_notify_Java();
} else {
func = OptoRuntime::monitor_notifyAll_Java();
}
Node* call = make_runtime_call(RC_NO_LEAF, ftype, func, NULL, TypeRawPtr::BOTTOM, argument(0));
make_slow_call_ex(call, env()->Throwable_klass(), false);
return true;
}
//----------------------------inline_min_max-----------------------------------
bool LibraryCallKit::inline_min_max(vmIntrinsics::ID id) {
set_result(generate_min_max(id, argument(0), argument(1)));
return true;
}
void LibraryCallKit::inline_math_mathExact(Node* math, Node *test) {
Node* bol = _gvn.transform( new BoolNode(test, BoolTest::overflow) );
IfNode* check = create_and_map_if(control(), bol, PROB_UNLIKELY_MAG(3), COUNT_UNKNOWN);
Node* fast_path = _gvn.transform( new IfFalseNode(check));
Node* slow_path = _gvn.transform( new IfTrueNode(check) );
{
PreserveJVMState pjvms(this);
PreserveReexecuteState preexecs(this);
jvms()->set_should_reexecute(true);
set_control(slow_path);
set_i_o(i_o());
uncommon_trap(Deoptimization::Reason_intrinsic,
Deoptimization::Action_none);
}
set_control(fast_path);
set_result(math);
}
template <typename OverflowOp>
bool LibraryCallKit::inline_math_overflow(Node* arg1, Node* arg2) {
typedef typename OverflowOp::MathOp MathOp;
MathOp* mathOp = new MathOp(arg1, arg2);
Node* operation = _gvn.transform( mathOp );
Node* ofcheck = _gvn.transform( new OverflowOp(arg1, arg2) );
inline_math_mathExact(operation, ofcheck);
return true;
}
bool LibraryCallKit::inline_math_addExactI(bool is_increment) {
return inline_math_overflow<OverflowAddINode>(argument(0), is_increment ? intcon(1) : argument(1));
}
bool LibraryCallKit::inline_math_addExactL(bool is_increment) {
return inline_math_overflow<OverflowAddLNode>(argument(0), is_increment ? longcon(1) : argument(2));
}
bool LibraryCallKit::inline_math_subtractExactI(bool is_decrement) {
return inline_math_overflow<OverflowSubINode>(argument(0), is_decrement ? intcon(1) : argument(1));
}
bool LibraryCallKit::inline_math_subtractExactL(bool is_decrement) {
return inline_math_overflow<OverflowSubLNode>(argument(0), is_decrement ? longcon(1) : argument(2));
}
bool LibraryCallKit::inline_math_negateExactI() {
return inline_math_overflow<OverflowSubINode>(intcon(0), argument(0));
}
bool LibraryCallKit::inline_math_negateExactL() {
return inline_math_overflow<OverflowSubLNode>(longcon(0), argument(0));
}
bool LibraryCallKit::inline_math_multiplyExactI() {
return inline_math_overflow<OverflowMulINode>(argument(0), argument(1));
}
bool LibraryCallKit::inline_math_multiplyExactL() {
return inline_math_overflow<OverflowMulLNode>(argument(0), argument(2));
}
bool LibraryCallKit::inline_math_multiplyHigh() {
set_result(_gvn.transform(new MulHiLNode(argument(0), argument(2))));
return true;
}
Node*
LibraryCallKit::generate_min_max(vmIntrinsics::ID id, Node* x0, Node* y0) {
// These are the candidate return value:
Node* xvalue = x0;
Node* yvalue = y0;
if (xvalue == yvalue) {
return xvalue;
}
bool want_max = (id == vmIntrinsics::_max);
const TypeInt* txvalue = _gvn.type(xvalue)->isa_int();
const TypeInt* tyvalue = _gvn.type(yvalue)->isa_int();
if (txvalue == NULL || tyvalue == NULL) return top();
// This is not really necessary, but it is consistent with a
// hypothetical MaxINode::Value method:
int widen = MAX2(txvalue->_widen, tyvalue->_widen);
// %%% This folding logic should (ideally) be in a different place.
// Some should be inside IfNode, and there to be a more reliable
// transformation of ?: style patterns into cmoves. We also want
// more powerful optimizations around cmove and min/max.
// Try to find a dominating comparison of these guys.
// It can simplify the index computation for Arrays.copyOf
// and similar uses of System.arraycopy.
// First, compute the normalized version of CmpI(x, y).
int cmp_op = Op_CmpI;
Node* xkey = xvalue;
Node* ykey = yvalue;
Node* ideal_cmpxy = _gvn.transform(new CmpINode(xkey, ykey));
if (ideal_cmpxy->is_Cmp()) {
// E.g., if we have CmpI(length - offset, count),
// it might idealize to CmpI(length, count + offset)
cmp_op = ideal_cmpxy->Opcode();
xkey = ideal_cmpxy->in(1);
ykey = ideal_cmpxy->in(2);
}
// Start by locating any relevant comparisons.
Node* start_from = (xkey->outcnt() < ykey->outcnt()) ? xkey : ykey;
Node* cmpxy = NULL;
Node* cmpyx = NULL;
for (DUIterator_Fast kmax, k = start_from->fast_outs(kmax); k < kmax; k++) {
Node* cmp = start_from->fast_out(k);
if (cmp->outcnt() > 0 && // must have prior uses
cmp->in(0) == NULL && // must be context-independent
cmp->Opcode() == cmp_op) { // right kind of compare
if (cmp->in(1) == xkey && cmp->in(2) == ykey) cmpxy = cmp;
if (cmp->in(1) == ykey && cmp->in(2) == xkey) cmpyx = cmp;
}
}
const int NCMPS = 2;
Node* cmps[NCMPS] = { cmpxy, cmpyx };
int cmpn;
for (cmpn = 0; cmpn < NCMPS; cmpn++) {
if (cmps[cmpn] != NULL) break; // find a result
}
if (cmpn < NCMPS) {
// Look for a dominating test that tells us the min and max.
int depth = 0; // Limit search depth for speed
Node* dom = control();
for (; dom != NULL; dom = IfNode::up_one_dom(dom, true)) {
if (++depth >= 100) break;
Node* ifproj = dom;
if (!ifproj->is_Proj()) continue;
Node* iff = ifproj->in(0);
if (!iff->is_If()) continue;
Node* bol = iff->in(1);
if (!bol->is_Bool()) continue;
Node* cmp = bol->in(1);
if (cmp == NULL) continue;
for (cmpn = 0; cmpn < NCMPS; cmpn++)
if (cmps[cmpn] == cmp) break;
if (cmpn == NCMPS) continue;
BoolTest::mask btest = bol->as_Bool()->_test._test;
if (ifproj->is_IfFalse()) btest = BoolTest(btest).negate();
if (cmp->in(1) == ykey) btest = BoolTest(btest).commute();
// At this point, we know that 'x btest y' is true.
switch (btest) {
case BoolTest::eq:
// They are proven equal, so we can collapse the min/max.
// Either value is the answer. Choose the simpler.
if (is_simple_name(yvalue) && !is_simple_name(xvalue))
return yvalue;
return xvalue;
case BoolTest::lt: // x < y
case BoolTest::le: // x <= y
return (want_max ? yvalue : xvalue);
case BoolTest::gt: // x > y
case BoolTest::ge: // x >= y
return (want_max ? xvalue : yvalue);
default:
break;
}
}
}
// We failed to find a dominating test.
// Let's pick a test that might GVN with prior tests.
Node* best_bol = NULL;
BoolTest::mask best_btest = BoolTest::illegal;
for (cmpn = 0; cmpn < NCMPS; cmpn++) {
Node* cmp = cmps[cmpn];
if (cmp == NULL) continue;
for (DUIterator_Fast jmax, j = cmp->fast_outs(jmax); j < jmax; j++) {
Node* bol = cmp->fast_out(j);
if (!bol->is_Bool()) continue;
BoolTest::mask btest = bol->as_Bool()->_test._test;
if (btest == BoolTest::eq || btest == BoolTest::ne) continue;
if (cmp->in(1) == ykey) btest = BoolTest(btest).commute();
if (bol->outcnt() > (best_bol == NULL ? 0 : best_bol->outcnt())) {
best_bol = bol->as_Bool();
best_btest = btest;
}
}
}
Node* answer_if_true = NULL;
Node* answer_if_false = NULL;
switch (best_btest) {
default:
if (cmpxy == NULL)
cmpxy = ideal_cmpxy;
best_bol = _gvn.transform(new BoolNode(cmpxy, BoolTest::lt));
// and fall through:
case BoolTest::lt: // x < y
case BoolTest::le: // x <= y
answer_if_true = (want_max ? yvalue : xvalue);
answer_if_false = (want_max ? xvalue : yvalue);
break;
case BoolTest::gt: // x > y
case BoolTest::ge: // x >= y
answer_if_true = (want_max ? xvalue : yvalue);
answer_if_false = (want_max ? yvalue : xvalue);
break;
}
jint hi, lo;
if (want_max) {
// We can sharpen the minimum.
hi = MAX2(txvalue->_hi, tyvalue->_hi);
lo = MAX2(txvalue->_lo, tyvalue->_lo);
} else {
// We can sharpen the maximum.
hi = MIN2(txvalue->_hi, tyvalue->_hi);
lo = MIN2(txvalue->_lo, tyvalue->_lo);
}
// Use a flow-free graph structure, to avoid creating excess control edges
// which could hinder other optimizations.
// Since Math.min/max is often used with arraycopy, we want
// tightly_coupled_allocation to be able to see beyond min/max expressions.
Node* cmov = CMoveNode::make(NULL, best_bol,
answer_if_false, answer_if_true,
TypeInt::make(lo, hi, widen));
return _gvn.transform(cmov);
/*
// This is not as desirable as it may seem, since Min and Max
// nodes do not have a full set of optimizations.
// And they would interfere, anyway, with 'if' optimizations
// and with CMoveI canonical forms.
switch (id) {
case vmIntrinsics::_min:
result_val = _gvn.transform(new (C, 3) MinINode(x,y)); break;
case vmIntrinsics::_max:
result_val = _gvn.transform(new (C, 3) MaxINode(x,y)); break;
default:
ShouldNotReachHere();
}
*/
}
inline int
LibraryCallKit::classify_unsafe_addr(Node* &base, Node* &offset, BasicType type) {
const TypePtr* base_type = TypePtr::NULL_PTR;
if (base != NULL) base_type = _gvn.type(base)->isa_ptr();
if (base_type == NULL) {
// Unknown type.
return Type::AnyPtr;
} else if (base_type == TypePtr::NULL_PTR) {
// Since this is a NULL+long form, we have to switch to a rawptr.
base = _gvn.transform(new CastX2PNode(offset));
offset = MakeConX(0);
return Type::RawPtr;
} else if (base_type->base() == Type::RawPtr) {
return Type::RawPtr;
} else if (base_type->isa_oopptr()) {
// Base is never null => always a heap address.
if (!TypePtr::NULL_PTR->higher_equal(base_type)) {
return Type::OopPtr;
}
// Offset is small => always a heap address.
const TypeX* offset_type = _gvn.type(offset)->isa_intptr_t();
if (offset_type != NULL &&
base_type->offset() == 0 && // (should always be?)
offset_type->_lo >= 0 &&
!MacroAssembler::needs_explicit_null_check(offset_type->_hi)) {
return Type::OopPtr;
} else if (type == T_OBJECT) {
// off heap access to an oop doesn't make any sense. Has to be on
// heap.
return Type::OopPtr;
}
// Otherwise, it might either be oop+off or NULL+addr.
return Type::AnyPtr;
} else {
// No information:
return Type::AnyPtr;
}
}
inline Node* LibraryCallKit::make_unsafe_address(Node*& base, Node* offset, BasicType type, bool can_cast) {
Node* uncasted_base = base;
int kind = classify_unsafe_addr(uncasted_base, offset, type);
if (kind == Type::RawPtr) {
return basic_plus_adr(top(), uncasted_base, offset);
} else if (kind == Type::AnyPtr) {
assert(base == uncasted_base, "unexpected base change");
if (can_cast) {
if (!_gvn.type(base)->speculative_maybe_null() &&
!too_many_traps(Deoptimization::Reason_speculate_null_check)) {
// According to profiling, this access is always on
// heap. Casting the base to not null and thus avoiding membars
// around the access should allow better optimizations
Node* null_ctl = top();
base = null_check_oop(base, &null_ctl, true, true, true);
assert(null_ctl->is_top(), "no null control here");
return basic_plus_adr(base, offset);
} else if (_gvn.type(base)->speculative_always_null() &&
!too_many_traps(Deoptimization::Reason_speculate_null_assert)) {
// According to profiling, this access is always off
// heap.
base = null_assert(base);
Node* raw_base = _gvn.transform(new CastX2PNode(offset));
offset = MakeConX(0);
return basic_plus_adr(top(), raw_base, offset);
}
}
// We don't know if it's an on heap or off heap access. Fall back
// to raw memory access.
Node* raw = _gvn.transform(new CheckCastPPNode(control(), base, TypeRawPtr::BOTTOM));
return basic_plus_adr(top(), raw, offset);
} else {
assert(base == uncasted_base, "unexpected base change");
// We know it's an on heap access so base can't be null
if (TypePtr::NULL_PTR->higher_equal(_gvn.type(base))) {
base = must_be_not_null(base, true);
}
return basic_plus_adr(base, offset);
}
}
//--------------------------inline_number_methods-----------------------------
// inline int Integer.numberOfLeadingZeros(int)
// inline int Long.numberOfLeadingZeros(long)
//
// inline int Integer.numberOfTrailingZeros(int)
// inline int Long.numberOfTrailingZeros(long)
//
// inline int Integer.bitCount(int)
// inline int Long.bitCount(long)
//
// inline char Character.reverseBytes(char)
// inline short Short.reverseBytes(short)
// inline int Integer.reverseBytes(int)
// inline long Long.reverseBytes(long)
bool LibraryCallKit::inline_number_methods(vmIntrinsics::ID id) {
Node* arg = argument(0);
Node* n = NULL;
switch (id) {
case vmIntrinsics::_numberOfLeadingZeros_i: n = new CountLeadingZerosINode( arg); break;
case vmIntrinsics::_numberOfLeadingZeros_l: n = new CountLeadingZerosLNode( arg); break;
case vmIntrinsics::_numberOfTrailingZeros_i: n = new CountTrailingZerosINode(arg); break;
case vmIntrinsics::_numberOfTrailingZeros_l: n = new CountTrailingZerosLNode(arg); break;
case vmIntrinsics::_bitCount_i: n = new PopCountINode( arg); break;
case vmIntrinsics::_bitCount_l: n = new PopCountLNode( arg); break;
case vmIntrinsics::_reverseBytes_c: n = new ReverseBytesUSNode(0, arg); break;
case vmIntrinsics::_reverseBytes_s: n = new ReverseBytesSNode( 0, arg); break;
case vmIntrinsics::_reverseBytes_i: n = new ReverseBytesINode( 0, arg); break;
case vmIntrinsics::_reverseBytes_l: n = new ReverseBytesLNode( 0, arg); break;
default: fatal_unexpected_iid(id); break;
}
set_result(_gvn.transform(n));
return true;
}
//----------------------------inline_unsafe_access----------------------------
const TypeOopPtr* LibraryCallKit::sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type) {
// Attempt to infer a sharper value type from the offset and base type.
ciKlass* sharpened_klass = NULL;
// See if it is an instance field, with an object type.
if (alias_type->field() != NULL) {
if (alias_type->field()->type()->is_klass()) {
sharpened_klass = alias_type->field()->type()->as_klass();
}
}
// See if it is a narrow oop array.
if (adr_type->isa_aryptr()) {
if (adr_type->offset() >= objArrayOopDesc::base_offset_in_bytes()) {
const TypeOopPtr *elem_type = adr_type->is_aryptr()->elem()->isa_oopptr();
if (elem_type != NULL) {
sharpened_klass = elem_type->klass();
}
}
}
// The sharpened class might be unloaded if there is no class loader
// contraint in place.
if (sharpened_klass != NULL && sharpened_klass->is_loaded()) {
const TypeOopPtr* tjp = TypeOopPtr::make_from_klass(sharpened_klass);
#ifndef PRODUCT
if (C->print_intrinsics() || C->print_inlining()) {
tty->print(" from base type: "); adr_type->dump(); tty->cr();
tty->print(" sharpened value: "); tjp->dump(); tty->cr();
}
#endif
// Sharpen the value type.
return tjp;
}
return NULL;
}
DecoratorSet LibraryCallKit::mo_decorator_for_access_kind(AccessKind kind) {
switch (kind) {
case Relaxed:
return MO_UNORDERED;
case Opaque:
return MO_RELAXED;
case Acquire:
return MO_ACQUIRE;
case Release:
return MO_RELEASE;
case Volatile:
return MO_SEQ_CST;
default:
ShouldNotReachHere();
return 0;
}
}
bool LibraryCallKit::inline_unsafe_access(bool is_store, const BasicType type, const AccessKind kind, const bool unaligned) {
if (callee()->is_static()) return false; // caller must have the capability!
DecoratorSet decorators = C2_UNSAFE_ACCESS;
guarantee(!is_store || kind != Acquire, "Acquire accesses can be produced only for loads");
guarantee( is_store || kind != Release, "Release accesses can be produced only for stores");
assert(type != T_OBJECT || !unaligned, "unaligned access not supported with object type");
if (type == T_OBJECT || type == T_ARRAY) {
decorators |= ON_UNKNOWN_OOP_REF;
}
if (unaligned) {
decorators |= C2_UNALIGNED;
}
#ifndef PRODUCT
{
ResourceMark rm;
// Check the signatures.
ciSignature* sig = callee()->signature();
#ifdef ASSERT
if (!is_store) {
// Object getObject(Object base, int/long offset), etc.
BasicType rtype = sig->return_type()->basic_type();
assert(rtype == type, "getter must return the expected value");
assert(sig->count() == 2, "oop getter has 2 arguments");
assert(sig->type_at(0)->basic_type() == T_OBJECT, "getter base is object");
assert(sig->type_at(1)->basic_type() == T_LONG, "getter offset is correct");
} else {
// void putObject(Object base, int/long offset, Object x), etc.
assert(sig->return_type()->basic_type() == T_VOID, "putter must not return a value");
assert(sig->count() == 3, "oop putter has 3 arguments");
assert(sig->type_at(0)->basic_type() == T_OBJECT, "putter base is object");
assert(sig->type_at(1)->basic_type() == T_LONG, "putter offset is correct");
BasicType vtype = sig->type_at(sig->count()-1)->basic_type();
assert(vtype == type, "putter must accept the expected value");
}
#endif // ASSERT
}
#endif //PRODUCT
C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe".
Node* receiver = argument(0); // type: oop
// Build address expression.
Node* adr;
Node* heap_base_oop = top();
Node* offset = top();
Node* val;
// The base is either a Java object or a value produced by Unsafe.staticFieldBase
Node* base = argument(1); // type: oop
// The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset
offset = argument(2); // type: long
// We currently rely on the cookies produced by Unsafe.xxxFieldOffset
// to be plain byte offsets, which are also the same as those accepted
// by oopDesc::field_addr.
assert(Unsafe_field_offset_to_byte_offset(11) == 11,
"fieldOffset must be byte-scaled");
// 32-bit machines ignore the high half!
offset = ConvL2X(offset);
adr = make_unsafe_address(base, offset, type, kind == Relaxed);
if (_gvn.type(base)->isa_ptr() != TypePtr::NULL_PTR) {
heap_base_oop = base;
} else if (type == T_OBJECT) {
return false; // off-heap oop accesses are not supported
}
// Can base be NULL? Otherwise, always on-heap access.
bool can_access_non_heap = TypePtr::NULL_PTR->higher_equal(_gvn.type(base));
if (!can_access_non_heap) {
decorators |= IN_HEAP;
}
val = is_store ? argument(4) : NULL;
const TypePtr* adr_type = _gvn.type(adr)->isa_ptr();
if (adr_type == TypePtr::NULL_PTR) {
return false; // off-heap access with zero address
}
// Try to categorize the address.
Compile::AliasType* alias_type = C->alias_type(adr_type);
assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here");
if (alias_type->adr_type() == TypeInstPtr::KLASS ||
alias_type->adr_type() == TypeAryPtr::RANGE) {
return false; // not supported
}
bool mismatched = false;
BasicType bt = alias_type->basic_type();
if (bt != T_ILLEGAL) {
assert(alias_type->adr_type()->is_oopptr(), "should be on-heap access");
if (bt == T_BYTE && adr_type->isa_aryptr()) {
// Alias type doesn't differentiate between byte[] and boolean[]).
// Use address type to get the element type.
bt = adr_type->is_aryptr()->elem()->array_element_basic_type();
}
if (bt == T_ARRAY || bt == T_NARROWOOP) {
// accessing an array field with getObject is not a mismatch
bt = T_OBJECT;
}
if ((bt == T_OBJECT) != (type == T_OBJECT)) {
// Don't intrinsify mismatched object accesses
return false;
}
mismatched = (bt != type);
} else if (alias_type->adr_type()->isa_oopptr()) {
mismatched = true; // conservatively mark all "wide" on-heap accesses as mismatched
}
assert(!mismatched || alias_type->adr_type()->is_oopptr(), "off-heap access can't be mismatched");
if (mismatched) {
decorators |= C2_MISMATCHED;
}
// First guess at the value type.
const Type *value_type = Type::get_const_basic_type(type);
// Figure out the memory ordering.
decorators |= mo_decorator_for_access_kind(kind);
if (!is_store && type == T_OBJECT) {
const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type);
if (tjp != NULL) {
value_type = tjp;
}
}
receiver = null_check(receiver);
if (stopped()) {
return true;
}
// Heap pointers get a null-check from the interpreter,
// as a courtesy. However, this is not guaranteed by Unsafe,
// and it is not possible to fully distinguish unintended nulls
// from intended ones in this API.
if (!is_store) {
Node* p = NULL;
// Try to constant fold a load from a constant field
ciField* field = alias_type->field();
if (heap_base_oop != top() && field != NULL && field->is_constant() && !mismatched) {
// final or stable field
p = make_constant_from_field(field, heap_base_oop);
}
if (p == NULL) { // Could not constant fold the load
p = access_load_at(heap_base_oop, adr, adr_type, value_type, type, decorators);
// Normalize the value returned by getBoolean in the following cases
if (type == T_BOOLEAN &&
(mismatched ||
heap_base_oop == top() || // - heap_base_oop is NULL or
(can_access_non_heap && field == NULL)) // - heap_base_oop is potentially NULL
// and the unsafe access is made to large offset
// (i.e., larger than the maximum offset necessary for any
// field access)
) {
IdealKit ideal = IdealKit(this);
#define __ ideal.
IdealVariable normalized_result(ideal);
__ declarations_done();
__ set(normalized_result, p);
__ if_then(p, BoolTest::ne, ideal.ConI(0));
__ set(normalized_result, ideal.ConI(1));
ideal.end_if();
final_sync(ideal);
p = __ value(normalized_result);
#undef __
}
}
if (type == T_ADDRESS) {
p = gvn().transform(new CastP2XNode(NULL, p));
p = ConvX2UL(p);
}
// The load node has the control of the preceding MemBarCPUOrder. All
// following nodes will have the control of the MemBarCPUOrder inserted at
// the end of this method. So, pushing the load onto the stack at a later
// point is fine.
set_result(p);
} else {
if (bt == T_ADDRESS) {
// Repackage the long as a pointer.
val = ConvL2X(val);
val = gvn().transform(new CastX2PNode(val));
}
access_store_at(control(), heap_base_oop, adr, adr_type, val, value_type, type, decorators);
}
return true;
}
//----------------------------inline_unsafe_load_store----------------------------
// This method serves a couple of different customers (depending on LoadStoreKind):
//
// LS_cmp_swap:
//
// boolean compareAndSetObject(Object o, long offset, Object expected, Object x);
// boolean compareAndSetInt( Object o, long offset, int expected, int x);
// boolean compareAndSetLong( Object o, long offset, long expected, long x);
//
// LS_cmp_swap_weak:
//
// boolean weakCompareAndSetObject( Object o, long offset, Object expected, Object x);
// boolean weakCompareAndSetObjectPlain( Object o, long offset, Object expected, Object x);
// boolean weakCompareAndSetObjectAcquire(Object o, long offset, Object expected, Object x);
// boolean weakCompareAndSetObjectRelease(Object o, long offset, Object expected, Object x);
//
// boolean weakCompareAndSetInt( Object o, long offset, int expected, int x);
// boolean weakCompareAndSetIntPlain( Object o, long offset, int expected, int x);
// boolean weakCompareAndSetIntAcquire( Object o, long offset, int expected, int x);
// boolean weakCompareAndSetIntRelease( Object o, long offset, int expected, int x);
//
// boolean weakCompareAndSetLong( Object o, long offset, long expected, long x);
// boolean weakCompareAndSetLongPlain( Object o, long offset, long expected, long x);
// boolean weakCompareAndSetLongAcquire( Object o, long offset, long expected, long x);
// boolean weakCompareAndSetLongRelease( Object o, long offset, long expected, long x);
//
// LS_cmp_exchange:
//
// Object compareAndExchangeObjectVolatile(Object o, long offset, Object expected, Object x);
// Object compareAndExchangeObjectAcquire( Object o, long offset, Object expected, Object x);
// Object compareAndExchangeObjectRelease( Object o, long offset, Object expected, Object x);
//
// Object compareAndExchangeIntVolatile( Object o, long offset, Object expected, Object x);
// Object compareAndExchangeIntAcquire( Object o, long offset, Object expected, Object x);
// Object compareAndExchangeIntRelease( Object o, long offset, Object expected, Object x);
//
// Object compareAndExchangeLongVolatile( Object o, long offset, Object expected, Object x);
// Object compareAndExchangeLongAcquire( Object o, long offset, Object expected, Object x);
// Object compareAndExchangeLongRelease( Object o, long offset, Object expected, Object x);
//
// LS_get_add:
//
// int getAndAddInt( Object o, long offset, int delta)
// long getAndAddLong(Object o, long offset, long delta)
//
// LS_get_set:
//
// int getAndSet(Object o, long offset, int newValue)
// long getAndSet(Object o, long offset, long newValue)
// Object getAndSet(Object o, long offset, Object newValue)
//
bool LibraryCallKit::inline_unsafe_load_store(const BasicType type, const LoadStoreKind kind, const AccessKind access_kind) {
// This basic scheme here is the same as inline_unsafe_access, but
// differs in enough details that combining them would make the code
// overly confusing. (This is a true fact! I originally combined
// them, but even I was confused by it!) As much code/comments as
// possible are retained from inline_unsafe_access though to make
// the correspondences clearer. - dl
if (callee()->is_static()) return false; // caller must have the capability!
DecoratorSet decorators = C2_UNSAFE_ACCESS;
decorators |= mo_decorator_for_access_kind(access_kind);
#ifndef PRODUCT
BasicType rtype;
{
ResourceMark rm;
// Check the signatures.
ciSignature* sig = callee()->signature();
rtype = sig->return_type()->basic_type();
switch(kind) {
case LS_get_add:
case LS_get_set: {
// Check the signatures.
#ifdef ASSERT
assert(rtype == type, "get and set must return the expected type");
assert(sig->count() == 3, "get and set has 3 arguments");
assert(sig->type_at(0)->basic_type() == T_OBJECT, "get and set base is object");
assert(sig->type_at(1)->basic_type() == T_LONG, "get and set offset is long");
assert(sig->type_at(2)->basic_type() == type, "get and set must take expected type as new value/delta");
assert(access_kind == Volatile, "mo is not passed to intrinsic nodes in current implementation");
#endif // ASSERT
break;
}
case LS_cmp_swap:
case LS_cmp_swap_weak: {
// Check the signatures.
#ifdef ASSERT
assert(rtype == T_BOOLEAN, "CAS must return boolean");
assert(sig->count() == 4, "CAS has 4 arguments");
assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object");
assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long");
#endif // ASSERT
break;
}
case LS_cmp_exchange: {
// Check the signatures.
#ifdef ASSERT
assert(rtype == type, "CAS must return the expected type");
assert(sig->count() == 4, "CAS has 4 arguments");
assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object");
assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long");
#endif // ASSERT
break;
}
default:
ShouldNotReachHere();
}
}
#endif //PRODUCT
C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe".
// Get arguments:
Node* receiver = NULL;
Node* base = NULL;
Node* offset = NULL;
Node* oldval = NULL;
Node* newval = NULL;
switch(kind) {
case LS_cmp_swap:
case LS_cmp_swap_weak:
case LS_cmp_exchange: {
const bool two_slot_type = type2size[type] == 2;
receiver = argument(0); // type: oop
base = argument(1); // type: oop
offset = argument(2); // type: long
oldval = argument(4); // type: oop, int, or long
newval = argument(two_slot_type ? 6 : 5); // type: oop, int, or long
break;
}
case LS_get_add:
case LS_get_set: {
receiver = argument(0); // type: oop
base = argument(1); // type: oop
offset = argument(2); // type: long
oldval = NULL;
newval = argument(4); // type: oop, int, or long
break;
}
default:
ShouldNotReachHere();
}
// Build field offset expression.
// We currently rely on the cookies produced by Unsafe.xxxFieldOffset
// to be plain byte offsets, which are also the same as those accepted
// by oopDesc::field_addr.
assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled");
// 32-bit machines ignore the high half of long offsets
offset = ConvL2X(offset);
Node* adr = make_unsafe_address(base, offset, type, false);
const TypePtr *adr_type = _gvn.type(adr)->isa_ptr();
Compile::AliasType* alias_type = C->alias_type(adr_type);
BasicType bt = alias_type->basic_type();
if (bt != T_ILLEGAL &&
((bt == T_OBJECT || bt == T_ARRAY) != (type == T_OBJECT))) {
// Don't intrinsify mismatched object accesses.
return false;
}
// For CAS, unlike inline_unsafe_access, there seems no point in
// trying to refine types. Just use the coarse types here.
assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here");
const Type *value_type = Type::get_const_basic_type(type);
switch (kind) {
case LS_get_set:
case LS_cmp_exchange: {
if (type == T_OBJECT) {
const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type);
if (tjp != NULL) {
value_type = tjp;
}
}
break;
}
case LS_cmp_swap:
case LS_cmp_swap_weak:
case LS_get_add:
break;
default:
ShouldNotReachHere();
}
// Null check receiver.
receiver = null_check(receiver);
if (stopped()) {
return true;
}
int alias_idx = C->get_alias_index(adr_type);
if (type == T_OBJECT || type == T_ARRAY) {
decorators |= IN_HEAP | ON_UNKNOWN_OOP_REF;
// Transformation of a value which could be NULL pointer (CastPP #NULL)
// could be delayed during Parse (for example, in adjust_map_after_if()).
// Execute transformation here to avoid barrier generation in such case.
if (_gvn.type(newval) == TypePtr::NULL_PTR)
newval = _gvn.makecon(TypePtr::NULL_PTR);
if (oldval != NULL && _gvn.type(oldval) == TypePtr::NULL_PTR) {
// Refine the value to a null constant, when it is known to be null
oldval = _gvn.makecon(TypePtr::NULL_PTR);
}
}
Node* result = NULL;
switch (kind) {
case LS_cmp_exchange: {
result = access_atomic_cmpxchg_val_at(control(), base, adr, adr_type, alias_idx,
oldval, newval, value_type, type, decorators);
break;
}
case LS_cmp_swap_weak:
decorators |= C2_WEAK_CMPXCHG;
case LS_cmp_swap: {
result = access_atomic_cmpxchg_bool_at(control(), base, adr, adr_type, alias_idx,
oldval, newval, value_type, type, decorators);
break;
}
case LS_get_set: {
result = access_atomic_xchg_at(control(), base, adr, adr_type, alias_idx,
newval, value_type, type, decorators);
break;
}
case LS_get_add: {
result = access_atomic_add_at(control(), base, adr, adr_type, alias_idx,
newval, value_type, type, decorators);
break;
}
default:
ShouldNotReachHere();
}
assert(type2size[result->bottom_type()->basic_type()] == type2size[rtype], "result type should match");
set_result(result);
return true;
}
bool LibraryCallKit::inline_unsafe_fence(vmIntrinsics::ID id) {
// Regardless of form, don't allow previous ld/st to move down,
// then issue acquire, release, or volatile mem_bar.
insert_mem_bar(Op_MemBarCPUOrder);
switch(id) {
case vmIntrinsics::_loadFence:
insert_mem_bar(Op_LoadFence);
return true;
case vmIntrinsics::_storeFence:
insert_mem_bar(Op_StoreFence);
return true;
case vmIntrinsics::_fullFence:
insert_mem_bar(Op_MemBarVolatile);
return true;
default:
fatal_unexpected_iid(id);
return false;
}
}
bool LibraryCallKit::inline_onspinwait() {
insert_mem_bar(Op_OnSpinWait);
return true;
}
bool LibraryCallKit::klass_needs_init_guard(Node* kls) {
if (!kls->is_Con()) {
return true;
}
const TypeKlassPtr* klsptr = kls->bottom_type()->isa_klassptr();
if (klsptr == NULL) {
return true;
}
ciInstanceKlass* ik = klsptr->klass()->as_instance_klass();
// don't need a guard for a klass that is already initialized
return !ik->is_initialized();
}
//----------------------------inline_unsafe_allocate---------------------------
// public native Object Unsafe.allocateInstance(Class<?> cls);
bool LibraryCallKit::inline_unsafe_allocate() {
if (callee()->is_static()) return false; // caller must have the capability!
null_check_receiver(); // null-check, then ignore
Node* cls = null_check(argument(1));
if (stopped()) return true;
Node* kls = load_klass_from_mirror(cls, false, NULL, 0);
kls = null_check(kls);
if (stopped()) return true; // argument was like int.class
Node* test = NULL;
if (LibraryCallKit::klass_needs_init_guard(kls)) {
// Note: The argument might still be an illegal value like
// Serializable.class or Object[].class. The runtime will handle it.
// But we must make an explicit check for initialization.
Node* insp = basic_plus_adr(kls, in_bytes(InstanceKlass::init_state_offset()));
// Use T_BOOLEAN for InstanceKlass::_init_state so the compiler
// can generate code to load it as unsigned byte.
Node* inst = make_load(NULL, insp, TypeInt::UBYTE, T_BOOLEAN, MemNode::unordered);
Node* bits = intcon(InstanceKlass::fully_initialized);
test = _gvn.transform(new SubINode(inst, bits));
// The 'test' is non-zero if we need to take a slow path.
}
Node* obj = new_instance(kls, test);
set_result(obj);
return true;
}
//------------------------inline_native_time_funcs--------------
// inline code for System.currentTimeMillis() and System.nanoTime()
// these have the same type and signature
bool LibraryCallKit::inline_native_time_funcs(address funcAddr, const char* funcName) {
const TypeFunc* tf = OptoRuntime::void_long_Type();
const TypePtr* no_memory_effects = NULL;
Node* time = make_runtime_call(RC_LEAF, tf, funcAddr, funcName, no_memory_effects);
Node* value = _gvn.transform(new ProjNode(time, TypeFunc::Parms+0));
#ifdef ASSERT
Node* value_top = _gvn.transform(new ProjNode(time, TypeFunc::Parms+1));
assert(value_top == top(),