Support pass-through of stub caller arguments

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 2c6b0a5f3df33e6e9c629cef11ad0b3e8332280d..b45bdaa99bbacd82a8cbc224762eb8a7f044908e 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -47,6 +47,7 @@ void KeyedLoadFastElementStub::InitializeInterfaceDescriptor(
   static Register registers[] = { edx, ecx };
   descriptor->register_param_count_ = 2;
   descriptor->register_params_ = registers;
+  descriptor->stack_parameter_count_ = NULL;
   descriptor->deoptimization_handler_ =
       FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure);
 }
@@ -7634,8 +7635,13 @@ void StubFailureTrampolineStub::Generate(MacroAssembler* masm) {
   bool save_fp_regs = CpuFeatures::IsSupported(SSE2);
   CEntryStub ces(1, save_fp_regs ? kSaveFPRegs : kDontSaveFPRegs);
   __ call(ces.GetCode(), RelocInfo::CODE_TARGET);
+  __ mov(ebx, MemOperand(ebp, StandardFrameConstants::kMarkerOffset -
+                          2 * kPointerSize));

[mvstanton, 2013/02/04 08:54:26]

Would it make sense to having something like a
StubFailureTrampolineConstants::kArgumentCountOffset for this expression?

[danno, 2013/02/04 10:22:24]

Done.

   masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE);
-  __ ret(0);  // Return to IC Miss stub, continuation still on stack.
+  __ pop(ecx);
+  __ lea(esp, MemOperand(esp, ebx, times_pointer_size,
+                         extra_expression_stack_count_ * kPointerSize));
+  __ jmp(ecx);  // Return to IC Miss stub, continuation still on stack.
 }