[turbofan] Introduce node regions for protection from scheduling.

src/compiler/common-operator.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/common-operator.h"
 
 #include "src/assembler.h"
 #include "src/base/lazy-instance.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/opcodes.h"
@@ skipping 660 matching lines @@
 
 const Operator* CommonOperatorBuilder::EffectSet(int arguments) {
   DCHECK(arguments > 1);                      // Disallow empty/singleton sets.
   return new (zone()) Operator(               // --
       IrOpcode::kEffectSet, Operator::kPure,  // opcode
       "EffectSet",                            // name
       0, arguments, 0, 0, 1, 0);              // counts
 }
 
 
-const Operator* CommonOperatorBuilder::ValueEffect(int arguments) {
-  DCHECK(arguments > 0);                        // Disallow empty value effects.
-  return new (zone()) Operator(                 // --
-      IrOpcode::kValueEffect, Operator::kPure,  // opcode
-      "ValueEffect",                            // name
-      arguments, 0, 0, 0, 1, 0);                // counts
+const Operator* CommonOperatorBuilder::BeginRegion() {

[Benedikt Meurer, 2015/10/13 19:12:09]

Nit: Move to the CACHED_OP_LIST above.

[Jarin, 2015/10/14 06:37:20]

Done.

+  return new (zone()) Operator(                    // --
+      IrOpcode::kBeginRegion, Operator::kNoThrow,  // opcode
+      "BeginRegion",                               // name
+      0, 1, 0, 0, 1, 0);                           // counts
 }
 
 
-const Operator* CommonOperatorBuilder::Finish(int arguments) {
-  DCHECK(arguments > 0);                   // Disallow empty finishes.
-  return new (zone()) Operator(            // --
-      IrOpcode::kFinish, Operator::kPure,  // opcode
-      "Finish",                            // name
-      1, arguments, 0, 1, 0, 0);           // counts
+const Operator* CommonOperatorBuilder::FinishRegion() {

[Benedikt Meurer, 2015/10/13 19:12:09]

Nit: Move to the CACHED_OP_LIST above.

[Jarin, 2015/10/14 06:37:20]

Done.

+  return new (zone()) Operator(                     // --
+      IrOpcode::kFinishRegion, Operator::kNoThrow,  // opcode
+      "FinishRegion",                               // name
+      1, 1, 0, 1, 1, 0);                            // counts
 }
 
 
 const Operator* CommonOperatorBuilder::StateValues(int arguments) {
   switch (arguments) {
 #define CACHED_STATE_VALUES(arguments) \
   case arguments:                      \
     return &cache_.kStateValues##arguments##Operator;
     CACHED_STATE_VALUES_LIST(CACHED_STATE_VALUES)
 #undef CACHED_STATE_VALUES
@@ skipping 111 matching lines @@
     Handle<SharedFunctionInfo> shared_info,
     ContextCallingMode context_calling_mode) {
   return new (zone()->New(sizeof(FrameStateFunctionInfo)))
       FrameStateFunctionInfo(type, parameter_count, local_count, shared_info,
                              context_calling_mode);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8