Add %_DebugBreakInOptimizedCode() pseudo function call to insert int3/stop...

Add %_DebugBreakInOptimizedCode() pseudo function call to insert int3/stop instructions into optimized code

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/17870002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15392 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/full-codegen.cc

@@ -940,6 +940,11 @@ void FullCodeGenerator::EmitGeneratorThrow(CallRuntime* expr) {
 }
 
 
+void FullCodeGenerator::EmitDebugBreakInOptimizedCode(CallRuntime* expr) {
+  context()->Plug(handle(Smi::FromInt(0), isolate()));
+}
+
+
 void FullCodeGenerator::VisitBinaryOperation(BinaryOperation* expr) {
   switch (expr->op()) {
     case Token::COMMA:

src/hydrogen.cc

@@ -10635,6 +10635,13 @@ void HOptimizedGraphBuilder::GenerateGeneratorThrow(CallRuntime* call) {
 }
 
 
+void HOptimizedGraphBuilder::GenerateDebugBreakInOptimizedCode(
+    CallRuntime* call) {
+  AddInstruction(new(zone()) HDebugBreak());
+  return ast_context()->ReturnValue(graph()->GetConstant0());
+}
+
+
 #undef CHECK_BAILOUT
 #undef CHECK_ALIVE
 

src/runtime.h

@@ -597,7 +597,8 @@ namespace internal {
   F(GetCachedArrayIndex, 1, 1)                                               \
   F(FastAsciiArrayJoin, 2, 1)                                                \
   F(GeneratorNext, 2, 1)                                                     \
-  F(GeneratorThrow, 2, 1)
+  F(GeneratorThrow, 2, 1)                                                    \
+  F(DebugBreakInOptimizedCode, 0, 1)
 
 
 // ----------------------------------------------------------------------------

test/mjsunit/fuzz-natives-part1.js

@@ -163,6 +163,8 @@ var knownProblems = {
   "ResolvePossiblyDirectEval": true,
   "Log": true,
   "DeclareGlobals": true,
+  "ArrayConstructor": true,
+  "InternalArrayConstructor": true,
 
   "PromoteScheduledException": true,
   "DeleteHandleScopeExtensions": true,
@@ -214,7 +216,9 @@ var knownProblems = {
 
 var currentlyUncallable = {
   // We need to find a way to test this without breaking the system.
-  "SystemBreak": true
+  "SystemBreak": true,
+  // Inserts an int3/stop instruction when run with --always-opt.
+  "_DebugBreakInOptimizedCode": true
 };
 
 function testNatives() {

test/mjsunit/fuzz-natives-part2.js

@@ -153,6 +153,7 @@ var knownProblems = {
   "ParallelRecompile": true,
   "InstallRecompiledCode": true,
   "NotifyDeoptimized": true,
+  "NotifyStubFailure": true,
   "NotifyOSR": true,
   "CreateObjectLiteralBoilerplate": true,
   "CloneLiteralBoilerplate": true,
@@ -215,7 +216,9 @@ var knownProblems = {
 
 var currentlyUncallable = {
   // We need to find a way to test this without breaking the system.
-  "SystemBreak": true
+  "SystemBreak": true,
+  // Inserts an int3/stop instruction when run with --always-opt.
+  "_DebugBreakInOptimizedCode": true
 };
 
 function testNatives() {

test/mjsunit/fuzz-natives-part3.js

@@ -153,6 +153,7 @@ var knownProblems = {
   "ParallelRecompile": true,
   "InstallRecompiledCode": true,
   "NotifyDeoptimized": true,
+  "NotifyStubFailure": true,
   "NotifyOSR": true,
   "CreateObjectLiteralBoilerplate": true,
   "CloneLiteralBoilerplate": true,
@@ -162,6 +163,8 @@ var knownProblems = {
   "ResolvePossiblyDirectEval": true,
   "Log": true,
   "DeclareGlobals": true,
+  "ArrayConstructor": true,
+  "InternalArrayConstructor": true,
 
   "PromoteScheduledException": true,
   "DeleteHandleScopeExtensions": true,
@@ -213,7 +216,9 @@ var knownProblems = {
 
 var currentlyUncallable = {
   // We need to find a way to test this without breaking the system.
-  "SystemBreak": true
+  "SystemBreak": true,
+  // Inserts an int3/stop instruction when run with --always-opt.
+  "_DebugBreakInOptimizedCode": true
 };
 
 function testNatives() {

test/mjsunit/fuzz-natives-part4.js

@@ -153,6 +153,7 @@ var knownProblems = {
   "ParallelRecompile": true,
   "InstallRecompiledCode": true,
   "NotifyDeoptimized": true,
+  "NotifyStubFailure": true,
   "NotifyOSR": true,
   "CreateObjectLiteralBoilerplate": true,
   "CloneLiteralBoilerplate": true,
@@ -162,6 +163,8 @@ var knownProblems = {
   "ResolvePossiblyDirectEval": true,
   "Log": true,
   "DeclareGlobals": true,
+  "ArrayConstructor": true,
+  "InternalArrayConstructor": true,
 
   "PromoteScheduledException": true,
   "DeleteHandleScopeExtensions": true,
@@ -213,7 +216,9 @@ var knownProblems = {
 
 var currentlyUncallable = {
   // We need to find a way to test this without breaking the system.
-  "SystemBreak": true
+  "SystemBreak": true,
+  // Inserts an int3/stop instruction when run with --always-opt.
+  "_DebugBreakInOptimizedCode": true
 };
 
 function testNatives() {