[Isolates] Merge from bleeding_edge to isolates, revisions 6100-6300.

src/ia32/builtins-ia32.cc

Index: src/ia32/builtins-ia32.cc
===================================================================
--- src/ia32/builtins-ia32.cc	(revision 6941)
+++ src/ia32/builtins-ia32.cc	(working copy)
@@ -400,7 +400,7 @@
 static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
                                              bool is_construct) {
   // Clear the context before we push it when entering the JS frame.
-  __ xor_(esi, Operand(esi));  // clear esi
+  __ Set(esi, Immediate(0));
 
   // Enter an internal frame.
   __ EnterInternalFrame();
@@ -422,7 +422,7 @@
 
   // Copy arguments to the stack in a loop.
   Label loop, entry;
-  __ xor_(ecx, Operand(ecx));  // clear ecx
+  __ Set(ecx, Immediate(0));
   __ jmp(&entry);
   __ bind(&loop);
   __ mov(edx, Operand(ebx, ecx, times_4, 0));  // push parameter from argv
@@ -645,7 +645,7 @@
   __ bind(&non_function);
   __ mov(Operand(esp, eax, times_4, 0), edi);
   // Clear edi to indicate a non-function being called.
-  __ xor_(edi, Operand(edi));
+  __ Set(edi, Immediate(0));
 
   // 4. Shift arguments and return address one slot down on the stack
   //    (overwriting the original receiver).  Adjust argument count to make
@@ -666,7 +666,7 @@
   { Label function;
     __ test(edi, Operand(edi));
     __ j(not_zero, &function, taken);
-    __ xor_(ebx, Operand(ebx));
+    __ Set(ebx, Immediate(0));
     __ GetBuiltinEntry(edx, Builtins::CALL_NON_FUNCTION);
     __ jmp(Handle<Code>(Isolate::Current()->builtins()->builtin(
         ArgumentsAdaptorTrampoline)), RelocInfo::CODE_TARGET);