8251462: Simplify compilation policy

Reviewed-by: cjplummer, kvn

Author: Igor Veresov

src/hotspot/cpu/aarch64/c1_LIRGenerator_aarch64.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2021, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -1411,7 +1411,7 @@ void LIRGenerator::volatile_field_load(LIR_Address* address, LIR_Opr result,
   // membar it's possible for a simple Dekker test to fail if loads
   // use LD;DMB but stores use STLR.  This can happen if C2 compiles
   // the stores in one method and C1 compiles the loads in another.
-  if (!is_c1_or_interpreter_only()) {
+  if (!CompilerConfig::is_c1_only_no_aot_or_jvmci()) {
     __ membar();
   }
   __ volatile_load_mem_reg(address, result, info);

src/hotspot/cpu/aarch64/c1_globals_aarch64.hpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -32,7 +32,7 @@
 // Sets the default values for platform dependent flags used by the client compiler.
 // (see c1_globals.hpp)
 
-#ifndef TIERED
+#ifndef COMPILER2
 define_pd_global(bool, BackgroundCompilation,        true );
 define_pd_global(bool, InlineIntrinsics,             true );
 define_pd_global(bool, PreferInterpreterNativeStubs, false);
@@ -56,7 +56,7 @@ define_pd_global(uintx, MetaspaceSize,               12*M );
 define_pd_global(bool, NeverActAsServerClassMachine, true );
 define_pd_global(uint64_t,MaxRAM,                    1ULL*G);
 define_pd_global(bool, CICompileOSR,                 true );
-#endif // !TIERED
+#endif // !COMPILER2
 define_pd_global(bool, UseTypeProfile,               false);
 
 define_pd_global(bool, OptimizeSinglePrecision,      true );

src/hotspot/cpu/aarch64/c2_globals_aarch64.hpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -39,7 +39,7 @@ define_pd_global(bool, PreferInterpreterNativeStubs, false);
 define_pd_global(bool, ProfileTraps,                 true);
 define_pd_global(bool, UseOnStackReplacement,        true);
 define_pd_global(bool, ProfileInterpreter,           true);
-define_pd_global(bool, TieredCompilation,            trueInTiered);
+define_pd_global(bool, TieredCompilation,            COMPILER1_PRESENT(true) NOT_COMPILER1(false));
 define_pd_global(intx, CompileThreshold,             10000);
 
 define_pd_global(intx, OnStackReplacePercentage,     140);

src/hotspot/cpu/aarch64/gc/shenandoah/c1/shenandoahBarrierSetC1_aarch64.cpp

@@ -51,7 +51,7 @@ void LIR_OpShenandoahCompareAndSwap::emit_code(LIR_Assembler* masm) {
 
   ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm->masm(), addr, cmpval, newval, /*acquire*/ true, /*release*/ true, /*is_cae*/ false, result);
 
-  if (is_c1_or_interpreter_only()) {
+  if (CompilerConfig::is_c1_only_no_aot_or_jvmci()) {
     // The membar here is necessary to prevent reordering between the
     // release store in the CAS above and a subsequent volatile load.
     // However for tiered compilation C1 inserts a full barrier before

src/hotspot/cpu/aarch64/globals_aarch64.hpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2015, 2019, Red Hat Inc. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -36,7 +36,7 @@ define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for im
 define_pd_global(bool, TrapBasedNullChecks,  false);
 define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs past to check cast
 
-define_pd_global(uintx, CodeCacheSegmentSize,    64 TIERED_ONLY(+64)); // Tiered compilation has large code-entry alignment.
+define_pd_global(uintx, CodeCacheSegmentSize,    64 COMPILER1_AND_COMPILER2_PRESENT(+64)); // Tiered compilation has large code-entry alignment.
 define_pd_global(intx, CodeEntryAlignment,       64);
 define_pd_global(intx, OptoLoopAlignment,        16);
 define_pd_global(intx, InlineFrequencyCount,     100);

src/hotspot/cpu/aarch64/templateInterpreterGenerator_aarch64.cpp

@@ -589,82 +589,31 @@ address TemplateInterpreterGenerator::generate_safept_entry_for(
 //
 // rmethod: method
 //
-void TemplateInterpreterGenerator::generate_counter_incr(
-        Label* overflow,
-        Label* profile_method,
-        Label* profile_method_continue) {
+void TemplateInterpreterGenerator::generate_counter_incr(Label* overflow) {
   Label done;
   // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not.
-  if (TieredCompilation) {
-    int increment = InvocationCounter::count_increment;
-    Label no_mdo;
-    if (ProfileInterpreter) {
-      // Are we profiling?
-      __ ldr(r0, Address(rmethod, Method::method_data_offset()));
-      __ cbz(r0, no_mdo);
-      // Increment counter in the MDO
-      const Address mdo_invocation_counter(r0, in_bytes(MethodData::invocation_counter_offset()) +
-                                                in_bytes(InvocationCounter::counter_offset()));
-      const Address mask(r0, in_bytes(MethodData::invoke_mask_offset()));
-      __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rscratch1, rscratch2, false, Assembler::EQ, overflow);
-      __ b(done);
-    }
-    __ bind(no_mdo);
-    // Increment counter in MethodCounters
-    const Address invocation_counter(rscratch2,
-                  MethodCounters::invocation_counter_offset() +
-                  InvocationCounter::counter_offset());
-    __ get_method_counters(rmethod, rscratch2, done);
-    const Address mask(rscratch2, in_bytes(MethodCounters::invoke_mask_offset()));
-    __ increment_mask_and_jump(invocation_counter, increment, mask, rscratch1, r1, false, Assembler::EQ, overflow);
-    __ bind(done);
-  } else { // not TieredCompilation
-    const Address backedge_counter(rscratch2,
-                  MethodCounters::backedge_counter_offset() +
-                  InvocationCounter::counter_offset());
-    const Address invocation_counter(rscratch2,
-                  MethodCounters::invocation_counter_offset() +
-                  InvocationCounter::counter_offset());
-
-    __ get_method_counters(rmethod, rscratch2, done);
-
-    if (ProfileInterpreter) { // %%% Merge this into MethodData*
-      __ ldrw(r1, Address(rscratch2, MethodCounters::interpreter_invocation_counter_offset()));
-      __ addw(r1, r1, 1);
-      __ strw(r1, Address(rscratch2, MethodCounters::interpreter_invocation_counter_offset()));
-    }
-    // Update standard invocation counters
-    __ ldrw(r1, invocation_counter);
-    __ ldrw(r0, backedge_counter);
-
-    __ addw(r1, r1, InvocationCounter::count_increment);
-    __ andw(r0, r0, InvocationCounter::count_mask_value);
-
-    __ strw(r1, invocation_counter);
-    __ addw(r0, r0, r1);                // add both counters
-
-    // profile_method is non-null only for interpreted method so
-    // profile_method != NULL == !native_call
-
-    if (ProfileInterpreter && profile_method != NULL) {
-      // Test to see if we should create a method data oop
-      __ ldr(rscratch2, Address(rmethod, Method::method_counters_offset()));
-      __ ldrw(rscratch2, Address(rscratch2, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
-      __ cmpw(r0, rscratch2);
-      __ br(Assembler::LT, *profile_method_continue);
-
-      // if no method data exists, go to profile_method
-      __ test_method_data_pointer(rscratch2, *profile_method);
-    }
-
-    {
-      __ ldr(rscratch2, Address(rmethod, Method::method_counters_offset()));
-      __ ldrw(rscratch2, Address(rscratch2, in_bytes(MethodCounters::interpreter_invocation_limit_offset())));
-      __ cmpw(r0, rscratch2);
-      __ br(Assembler::HS, *overflow);
-    }
-    __ bind(done);
+  int increment = InvocationCounter::count_increment;
+  Label no_mdo;
+  if (ProfileInterpreter) {
+    // Are we profiling?
+    __ ldr(r0, Address(rmethod, Method::method_data_offset()));
+    __ cbz(r0, no_mdo);
+    // Increment counter in the MDO
+    const Address mdo_invocation_counter(r0, in_bytes(MethodData::invocation_counter_offset()) +
+                                              in_bytes(InvocationCounter::counter_offset()));
+    const Address mask(r0, in_bytes(MethodData::invoke_mask_offset()));
+    __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rscratch1, rscratch2, false, Assembler::EQ, overflow);
+    __ b(done);
   }
+  __ bind(no_mdo);
+  // Increment counter in MethodCounters
+  const Address invocation_counter(rscratch2,
+                MethodCounters::invocation_counter_offset() +
+                InvocationCounter::counter_offset());
+  __ get_method_counters(rmethod, rscratch2, done);
+  const Address mask(rscratch2, in_bytes(MethodCounters::invoke_mask_offset()));
+  __ increment_mask_and_jump(invocation_counter, increment, mask, rscratch1, r1, false, Assembler::EQ, overflow);
+  __ bind(done);
 }
 
 void TemplateInterpreterGenerator::generate_counter_overflow(Label& do_continue) {
@@ -1205,7 +1154,7 @@ address TemplateInterpreterGenerator::generate_native_entry(bool synchronized) {
   // increment invocation count & check for overflow
   Label invocation_counter_overflow;
   if (inc_counter) {
-    generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
+    generate_counter_incr(&invocation_counter_overflow);
   }
 
   Label continue_after_compile;
@@ -1649,15 +1598,8 @@ address TemplateInterpreterGenerator::generate_normal_entry(bool synchronized) {
 
   // increment invocation count & check for overflow
   Label invocation_counter_overflow;
-  Label profile_method;
-  Label profile_method_continue;
   if (inc_counter) {
-    generate_counter_incr(&invocation_counter_overflow,
-                          &profile_method,
-                          &profile_method_continue);
-    if (ProfileInterpreter) {
-      __ bind(profile_method_continue);
-    }
+    generate_counter_incr(&invocation_counter_overflow);
   }
 
   Label continue_after_compile;
@@ -1709,15 +1651,6 @@ address TemplateInterpreterGenerator::generate_normal_entry(bool synchronized) {
 
   // invocation counter overflow
   if (inc_counter) {
-    if (ProfileInterpreter) {
-      // We have decided to profile this method in the interpreter
-      __ bind(profile_method);
-      __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
-      __ set_method_data_pointer_for_bcp();
-      // don't think we need this
-      __ get_method(r1);
-      __ b(profile_method_continue);
-    }
     // Handle overflow of counter and compile method
     __ bind(invocation_counter_overflow);
     generate_counter_overflow(continue_after_compile);