commit 33fbf1f4a4dd91b81637ffd581279855cf4ba226
author fpizlo@apple.com <fpizlo@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> Mon Nov 05 03:13:26 2012 +0000
committer fpizlo@apple.com <fpizlo@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> Mon Nov 05 03:13:26 2012 +0000
tree 63197cf08e06a28a5c44f57f00ea412e817f5cb2
parent bae3db13e3e9ec76ab1a6fd777fe1788e083dca8

Baseline JIT should use structure watchpoints whenever possible
https://bugs.webkit.org/show_bug.cgi?id=101146

Reviewed by Sam Weinig.

No speed-up yet except on toy programs. I think that it will start to show
speed-ups with https://bugs.webkit.org/show_bug.cgi?id=101147, which this is
a step towards.

* jit/JIT.h:
(JIT):
* jit/JITPropertyAccess.cpp:
(JSC::JIT::privateCompilePutByIdTransition):
(JSC::JIT::privateCompileGetByIdProto):
(JSC::JIT::privateCompileGetByIdProtoList):
(JSC::JIT::privateCompileGetByIdChainList):
(JSC::JIT::privateCompileGetByIdChain):
(JSC::JIT::addStructureTransitionCheck):
(JSC):
(JSC::JIT::testPrototype):
* jit/JITPropertyAccess32_64.cpp:
(JSC::JIT::privateCompilePutByIdTransition):
(JSC::JIT::privateCompileGetByIdProto):
(JSC::JIT::privateCompileGetByIdProtoList):
(JSC::JIT::privateCompileGetByIdChainList):
(JSC::JIT::privateCompileGetByIdChain):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@133430 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/JavaScriptCore/jit/JIT.h

diff --git a/Source/JavaScriptCore/jit/JIT.h b/Source/JavaScriptCore/jit/JIT.h
index aa8a007..44c74a6 100644
--- a/Source/JavaScriptCore/jit/JIT.h
+++ b/Source/JavaScriptCore/jit/JIT.h
@@ -428,6 +428,7 @@
         void privateCompileLinkPass();
         void privateCompileSlowCases();
         JITCode privateCompile(CodePtr* functionEntryArityCheck, JITCompilationEffort);
+        
         void privateCompileGetByIdProto(StructureStubInfo*, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, ReturnAddressPtr, CallFrame*);
         void privateCompileGetByIdSelfList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset);
         void privateCompileGetByIdProtoList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, CallFrame*);
@@ -466,7 +467,9 @@
         Jump emitJumpIfNotObject(RegisterID structureReg);
         Jump emitJumpIfNotType(RegisterID baseReg, RegisterID scratchReg, JSType);
 
-        void testPrototype(JSValue, JumpList& failureCases);
+        Jump addStructureTransitionCheck(JSCell*, Structure*, StructureStubInfo*, RegisterID scratch);
+        void addStructureTransitionCheck(JSCell*, Structure*, StructureStubInfo*, JumpList& failureCases, RegisterID scratch);
+        void testPrototype(JSValue, JumpList& failureCases, StructureStubInfo*);
 
         enum WriteBarrierMode { UnconditionalWriteBarrier, ShouldFilterImmediates };
         // value register in write barrier is used before any scratch registers