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compiler.cpp
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compiler.cpp
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/*
* MacRuby Compiler.
*
* This file is covered by the Ruby license. See COPYING for more details.
*
* Copyright (C) 2008-2010, Apple Inc. All rights reserved.
*/
#if !defined(MACRUBY_STATIC)
#define ROXOR_COMPILER_DEBUG 0
#if !defined(DW_LANG_Ruby)
# define DW_LANG_Ruby 0x15 // TODO: Python is 0x14, request a real number
#endif
#include <llvm/LLVMContext.h>
#include <llvm/Transforms/Utils/Cloning.h>
#include "llvm.h"
#include "ruby/macruby.h"
#include "ruby/encoding.h"
#include "ruby/node.h"
#include "id.h"
#include "vm.h"
#include "compiler.h"
#include "objc.h"
#include "version.h"
#include "encoding.h"
#include "re.h"
#include "bs.h"
#include "class.h"
extern "C" const char *ruby_node_name(int node);
// Will be set later, in vm.cpp.
llvm::Module *RoxorCompiler::module = NULL;
RoxorCompiler *RoxorCompiler::shared = NULL;
#define __save_state(type, var) \
type __old__##var = var
#define __restore_state(var) \
var = __old__##var
#define save_compiler_state() \
__save_state(unsigned int, current_line);\
__save_state(BasicBlock *, bb);\
__save_state(BasicBlock *, entry_bb);\
__save_state(ID, current_mid);\
__save_state(rb_vm_arity_t, current_arity);\
__save_state(ID, self_id);\
__save_state(Value *, current_self);\
__save_state(bool, current_block);\
__save_state(bool, current_block_chain);\
__save_state(Value *, current_var_uses);\
__save_state(Value *, running_block);\
__save_state(Value *, current_block_arg);\
__save_state(BasicBlock *, begin_bb);\
__save_state(BasicBlock *, rescue_invoke_bb);\
__save_state(BasicBlock *, rescue_rethrow_bb);\
__save_state(BasicBlock *, ensure_bb);\
__save_state(bool, current_rescue);\
__save_state(NODE *, current_block_node);\
__save_state(Function *, current_block_func);\
__save_state(Function *, current_non_block_func);\
__save_state(GlobalVariable *, current_opened_class);\
__save_state(bool, dynamic_class);\
__save_state(BasicBlock *, current_loop_begin_bb);\
__save_state(BasicBlock *, current_loop_body_bb);\
__save_state(BasicBlock *, current_loop_end_bb);\
__save_state(PHINode *, current_loop_exit_val);\
__save_state(int, return_from_block);\
__save_state(int, return_from_block_ids);\
__save_state(PHINode *, ensure_pn);\
__save_state(bool, block_declaration);\
__save_state(AllocaInst *, dispatch_argv);
#define restore_compiler_state() \
__restore_state(current_line);\
__restore_state(bb);\
__restore_state(entry_bb);\
__restore_state(current_mid);\
__restore_state(current_arity);\
__restore_state(self_id);\
__restore_state(current_self);\
__restore_state(current_block);\
__restore_state(current_block_chain);\
__restore_state(current_var_uses);\
__restore_state(running_block);\
__restore_state(current_block_arg);\
__restore_state(begin_bb);\
__restore_state(rescue_invoke_bb);\
__restore_state(rescue_rethrow_bb);\
__restore_state(ensure_bb);\
__restore_state(current_rescue);\
__restore_state(current_block_node);\
__restore_state(current_block_func);\
__restore_state(current_non_block_func);\
__restore_state(current_opened_class);\
__restore_state(dynamic_class);\
__restore_state(current_loop_begin_bb);\
__restore_state(current_loop_body_bb);\
__restore_state(current_loop_end_bb);\
__restore_state(current_loop_exit_val);\
__restore_state(return_from_block);\
__restore_state(return_from_block_ids);\
__restore_state(ensure_pn);\
__restore_state(block_declaration);\
__restore_state(dispatch_argv);
#define reset_compiler_state() \
bb = NULL;\
entry_bb = NULL;\
begin_bb = NULL;\
rescue_invoke_bb = NULL;\
rescue_rethrow_bb = NULL;\
ensure_bb = NULL;\
current_mid = 0;\
current_arity = rb_vm_arity(-1);\
self_id = rb_intern("self");\
current_self = NULL;\
current_var_uses = NULL;\
running_block = NULL;\
current_block_arg = NULL;\
current_block = false;\
current_block_chain = false;\
current_block_node = NULL;\
current_block_func = NULL;\
current_non_block_func = NULL;\
current_opened_class = NULL;\
dynamic_class = false;\
current_loop_begin_bb = NULL;\
current_loop_body_bb = NULL;\
current_loop_end_bb = NULL;\
current_loop_exit_val = NULL;\
current_rescue = false;\
return_from_block = -1;\
return_from_block_ids = 0;\
ensure_pn = NULL;\
block_declaration = false;\
dispatch_argv = NULL;
RoxorCompiler::RoxorCompiler(bool _debug_mode)
{
assert(RoxorCompiler::module != NULL);
debug_info = new DIFactory(*RoxorCompiler::module);
can_interpret = false;
debug_mode = _debug_mode;
fname = "";
inside_eval = false;
current_line = 0;
reset_compiler_state();
writeBarrierFunc = get_function("vm_gc_wb");
dispatchFunc = get_function("vm_dispatch");
fastPlusFunc = get_function("vm_fast_plus");
fastMinusFunc = get_function("vm_fast_minus");
fastMultFunc = get_function("vm_fast_mult");
fastDivFunc = get_function("vm_fast_div");
fastLtFunc = get_function("vm_fast_lt");
fastLeFunc = get_function("vm_fast_le");
fastGtFunc = get_function("vm_fast_gt");
fastGeFunc = get_function("vm_fast_ge");
fastEqFunc = get_function("vm_fast_eq");
fastNeqFunc = get_function("vm_fast_neq");
fastEqqFunc = get_function("vm_fast_eqq");
fastArefFunc = get_function("vm_fast_aref");
fastAsetFunc = get_function("vm_fast_aset");
fastShiftFunc = get_function("vm_fast_shift");
whenSplatFunc = get_function("vm_when_splat");
prepareBlockFunc = NULL;
pushBindingFunc = NULL;
getBlockFunc = get_function("vm_get_block");
currentBlockObjectFunc = NULL;
getConstFunc = get_function("vm_get_const");
setConstFunc = get_function("vm_set_const");
prepareMethodFunc = NULL;
singletonClassFunc = NULL;
defineClassFunc = NULL;
getIvarFunc = get_function("vm_ivar_get");
setIvarFunc = get_function("vm_ivar_set");
willChangeValueFunc = NULL;
didChangeValueFunc = NULL;
definedFunc = NULL;
undefFunc = NULL;
aliasFunc = NULL;
valiasFunc = NULL;
newHashFunc = get_function("vm_rhash_new");
storeHashFunc = get_function("vm_rhash_store");
toAFunc = get_function("vm_to_a");
toAryFunc = get_function("vm_to_ary");
catArrayFunc = get_function("vm_ary_cat");
dupArrayFunc = get_function("vm_ary_dup");
newArrayFunc = get_function("vm_rary_new");
asetArrayFunc = get_function("vm_rary_aset");
entryArrayFunc = get_function("vm_ary_entry");
checkArrayFunc = get_function("vm_ary_check");
newStructFunc = NULL;
newOpaqueFunc = NULL;
newPointerFunc = NULL;
getStructFieldsFunc = NULL;
getOpaqueDataFunc = NULL;
getPointerPtrFunc = get_function("vm_rval_to_cptr");
xmallocFunc = NULL;
checkArityFunc = NULL;
setStructFunc = NULL;
newRangeFunc = NULL;
newRegexpFunc = NULL;
strInternFunc = NULL;
selToSymFunc = NULL;
keepVarsFunc = NULL;
masgnGetElemBeforeSplatFunc =
get_function("vm_masgn_get_elem_before_splat");
masgnGetElemAfterSplatFunc = get_function("vm_masgn_get_elem_after_splat");
masgnGetSplatFunc = get_function("vm_masgn_get_splat");
newStringFunc = NULL;
newString2Func = NULL;
newString3Func = NULL;
yieldFunc = get_function("vm_yield_args");
getBrokenFunc = get_function("vm_get_broken_value");
blockEvalFunc = NULL;
gvarSetFunc = NULL;
gvarGetFunc = NULL;
cvarSetFunc = get_function("vm_cvar_set");
cvarGetFunc = get_function("vm_cvar_get");
currentExceptionFunc = NULL;
popExceptionFunc = NULL;
getSpecialFunc = get_function("vm_get_special");
breakFunc = NULL;
returnFromBlockFunc = NULL;
returnedFromBlockFunc = get_function("vm_returned_from_block");
checkReturnFromBlockFunc = NULL;
setHasEnsureFunc = NULL;
setScopeFunc = get_function("vm_set_current_scope");
setCurrentClassFunc = NULL;
debugTrapFunc = NULL;
getFFStateFunc = NULL;
setFFStateFunc = NULL;
releaseOwnershipFunc = get_function("vm_release_ownership");
ocvalToRvalFunc = get_function("vm_ocval_to_rval");
charToRvalFunc = get_function("vm_char_to_rval");
ucharToRvalFunc = get_function("vm_uchar_to_rval");
shortToRvalFunc = get_function("vm_short_to_rval");
ushortToRvalFunc = get_function("vm_ushort_to_rval");
intToRvalFunc = get_function("vm_int_to_rval");
uintToRvalFunc = get_function("vm_uint_to_rval");
longToRvalFunc = get_function("vm_long_to_rval");
ulongToRvalFunc = get_function("vm_ulong_to_rval");
longLongToRvalFunc = get_function("vm_long_long_to_rval");
ulongLongToRvalFunc = get_function("vm_ulong_long_to_rval");
floatToRvalFunc = get_function("vm_float_to_rval");
doubleToRvalFunc = get_function("vm_double_to_rval");
selToRvalFunc = get_function("vm_sel_to_rval");
charPtrToRvalFunc = get_function("vm_charptr_to_rval");
rvalToOcvalFunc = get_function("vm_rval_to_ocval");
rvalToBoolFunc = get_function("vm_rval_to_bool");
rvalToCharFunc = get_function("vm_rval_to_char");
rvalToUcharFunc = get_function("vm_rval_to_uchar");
rvalToShortFunc = get_function("vm_rval_to_short");
rvalToUshortFunc = get_function("vm_rval_to_ushort");
rvalToIntFunc = get_function("vm_rval_to_int");
rvalToUintFunc = get_function("vm_rval_to_uint");
rvalToLongFunc = get_function("vm_rval_to_long");
rvalToUlongFunc = get_function("vm_rval_to_ulong");
rvalToLongLongFunc = get_function("vm_rval_to_long_long");
rvalToUlongLongFunc = get_function("vm_rval_to_ulong_long");
rvalToFloatFunc = get_function("vm_rval_to_float");
rvalToDoubleFunc = get_function("vm_rval_to_double");
rvalToSelFunc = get_function("vm_rval_to_sel");
rvalToCharPtrFunc = get_function("vm_rval_to_charptr");
initBlockFunc = get_function("vm_init_c_block");
setCurrentMRIMethodContext = NULL;
VoidTy = Type::getVoidTy(context);
Int1Ty = Type::getInt1Ty(context);
Int8Ty = Type::getInt8Ty(context);
Int16Ty = Type::getInt16Ty(context);
Int32Ty = Type::getInt32Ty(context);
Int64Ty = Type::getInt64Ty(context);
FloatTy = Type::getFloatTy(context);
DoubleTy = Type::getDoubleTy(context);
#if __LP64__
RubyObjTy = IntTy = Int64Ty;
#else
RubyObjTy = IntTy = Int32Ty;
#endif
zeroVal = ConstantInt::get(IntTy, 0);
oneVal = ConstantInt::get(IntTy, 1);
twoVal = ConstantInt::get(IntTy, 2);
threeVal = ConstantInt::get(IntTy, 3);
defaultScope = ConstantInt::get(Int32Ty, SCOPE_DEFAULT);
publicScope = ConstantInt::get(Int32Ty, SCOPE_PUBLIC);
RubyObjPtrTy = PointerType::getUnqual(RubyObjTy);
RubyObjPtrPtrTy = PointerType::getUnqual(RubyObjPtrTy);
nilVal = ConstantInt::get(RubyObjTy, Qnil);
trueVal = ConstantInt::get(RubyObjTy, Qtrue);
falseVal = ConstantInt::get(RubyObjTy, Qfalse);
undefVal = ConstantInt::get(RubyObjTy, Qundef);
splatArgFollowsVal = ConstantInt::get(RubyObjTy, SPLAT_ARG_FOLLOWS);
PtrTy = PointerType::getUnqual(Int8Ty);
PtrPtrTy = PointerType::getUnqual(PtrTy);
Int32PtrTy = PointerType::getUnqual(Int32Ty);
BitTy = Type::getInt1Ty(context);
BlockLiteralTy = module->getTypeByName("struct.ruby_block_literal");
assert(BlockLiteralTy != NULL);
#if ROXOR_COMPILER_DEBUG
level = 0;
#endif
#if LLVM_TOT
dbg_mdkind = context.getMDKindID("dbg");
assert(dbg_mdkind != 0);
#else
dbg_mdkind = LLVMContext::MD_dbg;
#endif
}
RoxorAOTCompiler::RoxorAOTCompiler(void)
: RoxorCompiler(false)
{
cObject_gvar = NULL;
cStandardError_gvar = NULL;
}
SEL
RoxorCompiler::mid_to_sel(ID mid, int arity)
{
SEL sel;
const char *mid_str = rb_id2name(mid);
char buf[100];
if (mid_str[strlen(mid_str) - 1] != ':' && arity > 0) {
snprintf(buf, sizeof buf, "%s:", mid_str);
sel = sel_registerName(buf);
}
else {
sel = sel_registerName(mid_str);
if (rb_objc_ignored_sel(sel)) {
snprintf(buf, sizeof buf, "__hidden__%s", mid_str);
sel = sel_registerName(buf);
}
}
return sel;
}
Instruction *
RoxorCompiler::compile_protected_call(Value *imp, Value **args_begin,
Value **args_end)
{
if (rescue_invoke_bb == NULL) {
return CallInst::Create(imp, args_begin, args_end, "", bb);
}
else {
BasicBlock *normal_bb = BasicBlock::Create(context, "normal",
bb->getParent());
InvokeInst *dispatch = InvokeInst::Create(imp, normal_bb,
rescue_invoke_bb, args_begin, args_end, "", bb);
bb = normal_bb;
return dispatch;
}
}
Instruction *
RoxorCompiler::compile_protected_call(Value *imp, std::vector<Value *> ¶ms)
{
if (rescue_invoke_bb == NULL) {
return CallInst::Create(imp, params.begin(), params.end(), "", bb);
}
else {
BasicBlock *normal_bb = BasicBlock::Create(context, "normal",
bb->getParent());
InvokeInst *dispatch = InvokeInst::Create(imp, normal_bb,
rescue_invoke_bb, params.begin(), params.end(), "", bb);
bb = normal_bb;
return dispatch;
}
}
void
RoxorCompiler::compile_single_when_argument(NODE *arg, Value *comparedToVal,
BasicBlock *thenBB)
{
Value *subnodeVal = compile_node(arg);
Value *condVal;
if (comparedToVal != NULL) {
std::vector<Value *> params;
params.push_back(current_self);
params.push_back(subnodeVal);
params.push_back(compile_sel(selEqq));
params.push_back(compile_const_pointer(NULL));
params.push_back(ConstantInt::get(Int8Ty, 0));
params.push_back(ConstantInt::get(Int32Ty, 1));
params.push_back(comparedToVal);
condVal = compile_optimized_dispatch_call(selEqq, 1, params);
if (condVal == NULL) {
condVal = compile_dispatch_call(params);
}
}
else {
condVal = subnodeVal;
}
Function *f = bb->getParent();
BasicBlock *nextTestBB = BasicBlock::Create(context, "next_test", f);
compile_boolean_test(condVal, thenBB, nextTestBB);
bb = nextTestBB;
}
void
RoxorCompiler::compile_boolean_test(Value *condVal, BasicBlock *ifTrueBB,
BasicBlock *ifFalseBB)
{
Function *f = bb->getParent();
BasicBlock *notFalseBB = BasicBlock::Create(context, "not_false", f);
Value *notFalseCond = new ICmpInst(*bb, ICmpInst::ICMP_NE, condVal,
falseVal);
BranchInst::Create(notFalseBB, ifFalseBB, notFalseCond, bb);
Value *notNilCond = new ICmpInst(*notFalseBB, ICmpInst::ICMP_NE, condVal,
nilVal);
BranchInst::Create(ifTrueBB, ifFalseBB, notNilCond, notFalseBB);
}
void
RoxorCompiler::compile_when_arguments(NODE *args, Value *comparedToVal,
BasicBlock *thenBB)
{
switch (nd_type(args)) {
case NODE_ARRAY:
while (args != NULL) {
compile_single_when_argument(args->nd_head, comparedToVal,
thenBB);
args = args->nd_next;
}
break;
case NODE_SPLAT:
{
Value *condVal = compile_when_splat(comparedToVal,
compile_node(args->nd_head));
BasicBlock *nextTestBB = BasicBlock::Create(context,
"next_test", bb->getParent());
compile_boolean_test(condVal, thenBB, nextTestBB);
bb = nextTestBB;
}
break;
case NODE_ARGSPUSH:
case NODE_ARGSCAT:
compile_when_arguments(args->nd_head, comparedToVal, thenBB);
compile_single_when_argument(args->nd_body, comparedToVal, thenBB);
break;
default:
compile_node_error("unrecognized when arg node", args);
}
}
Function::ArgumentListType::iterator
RoxorCompiler::compile_optional_arguments(
Function::ArgumentListType::iterator iter, NODE *node)
{
assert(nd_type(node) == NODE_OPT_ARG);
do {
assert(node->nd_value != NULL);
Value *isUndefInst = new ICmpInst(*bb, ICmpInst::ICMP_EQ, iter,
undefVal);
Function *f = bb->getParent();
BasicBlock *arg_undef = BasicBlock::Create(context, "arg_undef", f);
BasicBlock *next_bb = BasicBlock::Create(context, "", f);
BranchInst::Create(arg_undef, next_bb, isUndefInst, bb);
bb = arg_undef;
compile_node(node->nd_value);
BranchInst::Create(next_bb, bb);
bb = next_bb;
++iter;
}
while ((node = node->nd_next) != NULL);
return iter;
}
void
RoxorCompiler::compile_dispatch_arguments(NODE *args,
std::vector<Value *> &arguments, int *pargc)
{
int argc = 0;
switch (nd_type(args)) {
case NODE_ARRAY:
for (NODE *n = args; n != NULL; n = n->nd_next) {
arguments.push_back(compile_node(n->nd_head));
argc++;
}
break;
case NODE_SPLAT:
assert(args->nd_head != NULL);
arguments.push_back(splatArgFollowsVal);
arguments.push_back(compile_node(args->nd_head));
argc++;
break;
case NODE_ARGSCAT:
assert(args->nd_head != NULL);
compile_dispatch_arguments(args->nd_head, arguments, &argc);
assert(args->nd_body != NULL);
arguments.push_back(splatArgFollowsVal);
arguments.push_back(compile_node(args->nd_body));
argc++;
break;
case NODE_ARGSPUSH:
assert(args->nd_head != NULL);
compile_dispatch_arguments(args->nd_head, arguments, &argc);
assert(args->nd_body != NULL);
arguments.push_back(compile_node(args->nd_body));
argc++;
break;
default:
compile_node_error("unrecognized dispatch arg node", args);
}
*pargc = argc;
}
Value *
RoxorCompiler::compile_when_splat(Value *comparedToVal, Value *splatVal)
{
if (comparedToVal == NULL) {
return splatVal;
}
GlobalVariable *is_redefined = GET_CORE()->redefined_op_gvar(selEqq, true);
Value *args[] = {
new LoadInst(is_redefined, "", bb),
comparedToVal,
splatVal
};
return compile_protected_call(whenSplatFunc, args, args + 3);
}
Instruction *
RoxorCompiler::compile_const_global_ustring(const UniChar *str,
const size_t len)
{
assert(len > 0);
const unsigned long hash = rb_str_hash_uchars(str, len);
std::map<CFHashCode, GlobalVariable *>::iterator iter =
static_ustrings.find(hash);
GlobalVariable *gvar;
if (iter == static_ustrings.end()) {
const ArrayType *str_type = ArrayType::get(Int16Ty, len);
std::vector<Constant *> ary_elements;
for (unsigned int i = 0; i < len; i++) {
ary_elements.push_back(ConstantInt::get(Int16Ty, str[i]));
}
gvar = new GlobalVariable(*RoxorCompiler::module, str_type, true,
GlobalValue::InternalLinkage,
ConstantArray::get(str_type, ary_elements), "");
static_ustrings[hash] = gvar;
}
else {
gvar = iter->second;
}
Value *idxs[] = {
ConstantInt::get(Int32Ty, 0),
ConstantInt::get(Int32Ty, 0)
};
return GetElementPtrInst::Create(gvar, idxs, idxs + 2, "", bb);
}
Instruction *
RoxorCompiler::compile_const_global_string(const char *str,
const size_t len)
{
assert(len > 0);
std::string s(str, len);
std::map<std::string, GlobalVariable *>::iterator iter =
static_strings.find(s);
GlobalVariable *gvar;
if (iter == static_strings.end()) {
const ArrayType *str_type = ArrayType::get(Int8Ty, len + 1);
std::vector<Constant *> ary_elements;
for (unsigned int i = 0; i < len; i++) {
ary_elements.push_back(ConstantInt::get(Int8Ty, str[i]));
}
ary_elements.push_back(ConstantInt::get(Int8Ty, 0));
gvar = new GlobalVariable(*RoxorCompiler::module, str_type, true,
GlobalValue::InternalLinkage,
ConstantArray::get(str_type, ary_elements), "");
static_strings[s] = gvar;
}
else {
gvar = iter->second;
}
Value *idxs[] = {
ConstantInt::get(Int32Ty, 0),
ConstantInt::get(Int32Ty, 0)
};
return GetElementPtrInst::Create(gvar, idxs, idxs + 2, "", bb);
}
Value *
RoxorCompiler::compile_ccache(ID name)
{
struct ccache *cache = GET_CORE()->constant_cache_get(name);
return compile_const_pointer(cache);
}
Value *
RoxorAOTCompiler::compile_ccache(ID name)
{
std::map<ID, GlobalVariable *>::iterator iter =
ccaches.find(name);
GlobalVariable *gvar;
if (iter == ccaches.end()) {
gvar = new GlobalVariable(*RoxorCompiler::module, PtrTy, false,
GlobalValue::InternalLinkage, Constant::getNullValue(PtrTy),
"");
assert(gvar != NULL);
ccaches[name] = gvar;
}
else {
gvar = iter->second;
}
return new LoadInst(gvar, "", bb);
}
static void
discover_stubs(std::map<SEL, std::vector<std::string> *> &map,
std::vector<std::string> &dest, SEL sel)
{
std::map<SEL, std::vector<std::string> *>::iterator iter;
iter = map.find(sel);
if (iter != map.end()) {
std::vector<std::string> *v = iter->second;
for (std::vector<std::string>::iterator i = v->begin();
i != v->end(); ++i) {
std::string s = *i;
if (std::find(dest.begin(), dest.end(), s) == dest.end()) {
dest.push_back(s);
}
}
}
}
Value *
RoxorAOTCompiler::compile_sel(SEL sel, bool add_to_bb)
{
std::map<SEL, GlobalVariable *>::iterator iter = sels.find(sel);
GlobalVariable *gvar;
if (iter == sels.end()) {
gvar = new GlobalVariable(*RoxorCompiler::module, PtrTy, false,
GlobalValue::InternalLinkage, Constant::getNullValue(PtrTy),
"");
assert(gvar != NULL);
sels[sel] = gvar;
discover_stubs(bs_c_stubs_types, c_stubs, sel);
discover_stubs(bs_objc_stubs_types, objc_stubs, sel);
}
else {
gvar = iter->second;
}
return add_to_bb
? new LoadInst(gvar, "", bb)
: new LoadInst(gvar, "");
}
Value *
RoxorCompiler::compile_arity(rb_vm_arity_t &arity)
{
uint64_t v;
assert(sizeof(uint64_t) == sizeof(rb_vm_arity_t));
memcpy(&v, &arity, sizeof(rb_vm_arity_t));
return ConstantInt::get(Int64Ty, v);
}
void
RoxorCompiler::compile_method_definition(NODE *node)
{
ID mid = node->nd_mid;
assert(mid > 0);
NODE *body = node->nd_defn;
assert(body != NULL);
const bool singleton_method = nd_type(node) == NODE_DEFS;
const ID old_current_mid = current_mid;
current_mid = mid;
const bool old_current_block_chain = current_block_chain;
current_block_chain = false;
const bool old_block_declaration = block_declaration;
block_declaration = false;
const bool old_should_interpret = should_interpret;
DEBUG_LEVEL_INC();
Value *val = compile_node(body);
assert(Function::classof(val));
Function *func = cast<Function>(val);
DEBUG_LEVEL_DEC();
should_interpret = old_should_interpret;
block_declaration = old_block_declaration;
current_block_chain = old_current_block_chain;
current_mid = old_current_mid;
Value *classVal;
if (singleton_method) {
assert(node->nd_recv != NULL);
classVal = compile_singleton_class(compile_node(node->nd_recv));
}
else {
classVal = compile_current_class();
}
rb_vm_arity_t arity = rb_vm_node_arity(body);
const SEL sel = mid_to_sel(mid, arity.real);
compile_prepare_method(classVal, compile_sel(sel), singleton_method,
func, arity, body);
can_interpret = true;
}
void
RoxorCompiler::compile_prepare_method(Value *classVal, Value *sel,
bool singleton, Function *new_function, rb_vm_arity_t &arity,
NODE *body)
{
if (prepareMethodFunc == NULL) {
// void rb_vm_prepare_method(Class klass, unsigned char dynamic_class,
// SEL sel, Function *func, rb_vm_arity_t arity, int flags)
prepareMethodFunc =
cast<Function>(module->getOrInsertFunction(
"rb_vm_prepare_method",
VoidTy, RubyObjTy, Int8Ty, PtrTy, PtrTy, Int64Ty,
Int32Ty, NULL));
}
Value *args[] = {
classVal,
ConstantInt::get(Int8Ty, !singleton && dynamic_class ? 1 : 0),
sel,
compile_const_pointer(new_function),
compile_arity(arity),
ConstantInt::get(Int32Ty, rb_vm_node_flags(body))
};
CallInst::Create(prepareMethodFunc, args, args + 6, "", bb);
}
void
RoxorAOTCompiler::compile_prepare_method(Value *classVal, Value *sel,
bool singleton, Function *func, rb_vm_arity_t &arity, NODE *body)
{
if (prepareMethodFunc == NULL) {
// void rb_vm_prepare_method2(Class klass, unsigned char dynamic_class,
// SEL sel, IMP ruby_imp, rb_vm_arity_t arity, int flags, ...)
std::vector<const Type *> types;
types.push_back(RubyObjTy);
types.push_back(Int8Ty);
types.push_back(PtrTy);
types.push_back(PtrTy);
types.push_back(Int64Ty);
types.push_back(Int32Ty);
FunctionType *ft = FunctionType::get(VoidTy, types, true);
prepareMethodFunc = cast<Function>(module->getOrInsertFunction(
"rb_vm_prepare_method2", ft));
}
const unsigned char dyn_class = !singleton && dynamic_class ? 1 : 0;
std::vector<Value *> params;
params.push_back(classVal);
params.push_back(ConstantInt::get(Int8Ty, dyn_class));
params.push_back(sel);
params.push_back(new BitCastInst(func, PtrTy, "", bb));
params.push_back(compile_arity(arity));
params.push_back(ConstantInt::get(Int32Ty, rb_vm_node_flags(body)));
// Pre-compile a generic Objective-C stub, where all arguments and return
// value are Ruby types.
char types[100];
types[0] = '@';
types[1] = '@';
types[2] = ':';
assert(arity.real < (int)sizeof(types) - 3);
for (int i = 0; i < arity.real; i++) {
types[3 + i] = '@';
}
types[arity.real + 3] = '\0';
params.push_back(compile_const_global_string(types));
Function *stub = compile_objc_stub(func, NULL, arity, types);
params.push_back(new BitCastInst(stub, PtrTy, "", bb));
params.push_back(compile_const_pointer(NULL));
CallInst::Create(prepareMethodFunc, params.begin(), params.end(), "", bb);
}
void
RoxorCompiler::attach_current_line_metadata(Instruction *insn)
{
if (fname != NULL) {
DILocation loc = debug_info->CreateLocation(current_line, 0,
debug_compile_unit, DILocation(NULL));
insn->setMetadata(dbg_mdkind, loc);
}
}
void
RoxorCompiler::generate_location_path(std::string &path, DILocation loc)
{
if (loc.getFilename() == "-e") {
path.append(loc.getFilename());
}
else {
path.append(loc.getDirectory());
path.append("/");
path.append(loc.getFilename());
}
}
Value *
RoxorCompiler::recompile_dispatch_argv(std::vector<Value *> ¶ms, int offset)
{
const long argc = params.size() - offset;
if (argc == 0) {
return compile_const_pointer(NULL, RubyObjPtrTy);
}
assert(argc > 0);
Instruction *first = bb->getParent()->getEntryBlock().getFirstNonPHI();
if (dispatch_argv == NULL) {
dispatch_argv = new AllocaInst(RubyObjTy,
ConstantInt::get(Int32Ty, argc), "argv", first);
}
else {
Value *size = dispatch_argv->getArraySize();
if (argc > cast<ConstantInt>(size)->getSExtValue()) {
AllocaInst *new_argv = new AllocaInst(RubyObjTy,
ConstantInt::get(Int32Ty, argc), "argv", first);
dispatch_argv->replaceAllUsesWith(new_argv);
dispatch_argv->eraseFromParent();
dispatch_argv = new_argv;
}
}
for (int i = 0; i < argc; i++) {
Value *idx = ConstantInt::get(Int32Ty, i);
Value *slot = GetElementPtrInst::Create(dispatch_argv, idx, "", bb);
new StoreInst(params[offset + i], slot, bb);
}
return dispatch_argv;
}
Value *
RoxorCompiler::compile_dispatch_call(std::vector<Value *> ¶ms)
{
Value *argv = recompile_dispatch_argv(params, 6);
params.erase(params.begin() + 6, params.end());
params.push_back(argv);
Instruction *insn = compile_protected_call(dispatchFunc, params);
attach_current_line_metadata(insn);
return insn;
}
Value *
RoxorCompiler::compile_attribute_assign(NODE *node, Value *extra_val)
{
Value *recv = node->nd_recv == (NODE *)1
? current_self
: compile_node(node->nd_recv);
ID mid = node->nd_mid;
assert(mid > 0);
std::vector<Value *> args;
NODE *n = node->nd_args;
int argc = 0;
if (n != NULL) {
compile_dispatch_arguments(n, args, &argc);
}
if (extra_val != NULL) {
args.push_back(extra_val);
argc++;
}
if (mid != idASET) {
// A regular attribute assignment (obj.foo = 42)
assert(argc == 1);
}
std::vector<Value *> params;
const SEL sel = mid_to_sel(mid, argc);
params.push_back(current_self);
params.push_back(recv);
params.push_back(compile_sel(sel));
params.push_back(compile_const_pointer(NULL));
unsigned char opt = 0;
if (recv == current_self) {
opt = DISPATCH_FCALL;
}
if (argc < (int)args.size()) {
opt |= DISPATCH_SPLAT;
}
params.push_back(ConstantInt::get(Int8Ty, opt));
params.push_back(ConstantInt::get(Int32Ty, argc));
for (std::vector<Value *>::iterator i = args.begin();
i != args.end();
++i) {
params.push_back(*i);
}
// The return value of these assignments is always the new value.
Value *retval = params.back();
if (compile_optimized_dispatch_call(sel, argc, params) == NULL) {
compile_dispatch_call(params);
}
return retval;
}
void
RoxorCompiler::compile_multiple_assignment_element(NODE *node, Value *val)
{
switch (nd_type(node)) {
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
new StoreInst(val, compile_lvar_slot(node->nd_vid), bb);
break;
case NODE_IASGN:
case NODE_IASGN2:
compile_ivar_assignment(node->nd_vid, val);
break;
case NODE_CVASGN:
compile_cvar_assignment(node->nd_vid, val);
break;
case NODE_GASGN:
compile_gvar_assignment(node, val);
break;
case NODE_ATTRASGN:
compile_attribute_assign(node, val);
break;
case NODE_MASGN:
compile_multiple_assignment(node, val);
break;
case NODE_CDECL:
compile_constant_declaration(node, val);
break;
default:
compile_node_error("unimplemented MASGN subnode",
node);
}
}