1 files changed, 2 insertions, 20 deletions

diff --git a/Source/JavaScriptCore/jit/JITOpcodes.cpp b/Source/JavaScriptCore/jit/JITOpcodes.cpp
index d68f4109d..f43e98c45 100644
--- a/Source/JavaScriptCore/jit/JITOpcodes.cpp
+++ b/Source/JavaScriptCore/jit/JITOpcodes.cpp
@@ -1263,42 +1263,24 @@ void JIT::emit_op_convert_this(Instruction* currentInstruction)
     addSlowCase(branchPtr(Equal, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
 }
 
-void JIT::emit_op_get_callee(Instruction* currentInstruction)
-{
-    unsigned result = currentInstruction[1].u.operand;
-    emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
-    emitPutVirtualRegister(result);
-}
-
 void JIT::emit_op_create_this(Instruction* currentInstruction)
 {
-    emitGetVirtualRegister(currentInstruction[2].u.operand, regT2);
-    emitJumpSlowCaseIfNotJSCell(regT2, currentInstruction[2].u.operand);
-    loadPtr(Address(regT2, JSCell::structureOffset()), regT1);
-    addSlowCase(emitJumpIfNotObject(regT1));
-    
-    // now we know that the prototype is an object, but we don't know if it's got an
-    // inheritor ID
-    
-    loadPtr(Address(regT2, JSObject::offsetOfInheritorID()), regT2);
+    emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
+    loadPtr(Address(regT0, JSFunction::offsetOfCachedInheritorID()), regT2);
     addSlowCase(branchTestPtr(Zero, regT2));
     
     // now regT2 contains the inheritorID, which is the structure that the newly
     // allocated object will have.
     
     emitAllocateJSFinalObject(regT2, regT0, regT1);
-    
     emitPutVirtualRegister(currentInstruction[1].u.operand);
 }
 
 void JIT::emitSlow_op_create_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
 {
-    linkSlowCaseIfNotJSCell(iter, currentInstruction[2].u.operand); // not a cell
-    linkSlowCase(iter); // not an object
     linkSlowCase(iter); // doesn't have an inheritor ID
     linkSlowCase(iter); // allocation failed
     JITStubCall stubCall(this, cti_op_create_this);
-    stubCall.addArgument(currentInstruction[2].u.operand, regT1);
     stubCall.call(currentInstruction[1].u.operand);
 }