Win64 - Allow returning two values from a runtime function.

src/ia32/codegen-ia32.cc

Index: src/ia32/codegen-ia32.cc
diff --git a/src/ia32/codegen-ia32.cc b/src/ia32/codegen-ia32.cc
index a9face1d70d2f869cd7fe7805620261924550b20..3b854d1d8008c7acc4dc316090da440230fe7e15 100644
--- a/src/ia32/codegen-ia32.cc
+++ b/src/ia32/codegen-ia32.cc
@@ -6886,7 +6886,7 @@ void GenericBinaryOpStub::Generate(MacroAssembler* masm) {
       __ j(above_equal, &string1);
 
       // First and second argument are strings.
-      __ TailCallRuntime(ExternalReference(Runtime::kStringAdd), 2);
+      __ TailCallRuntime(ExternalReference(Runtime::kStringAdd), 2, 1);
 
       // Only first argument is a string.
       __ bind(&string1);
@@ -7176,7 +7176,7 @@ void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) {
   __ pop(ebx);  // Return address.
   __ push(edx);
   __ push(ebx);
-  __ TailCallRuntime(ExternalReference(Runtime::kGetArgumentsProperty), 1);
+  __ TailCallRuntime(ExternalReference(Runtime::kGetArgumentsProperty), 1, 1);
 }
 
 
@@ -7201,7 +7201,7 @@ void ArgumentsAccessStub::GenerateNewObject(MacroAssembler* masm) {
 
   // Do the runtime call to allocate the arguments object.
   __ bind(&runtime);
-  __ TailCallRuntime(ExternalReference(Runtime::kNewArgumentsFast), 3);
+  __ TailCallRuntime(ExternalReference(Runtime::kNewArgumentsFast), 3, 1);
 }
 
 
@@ -7437,7 +7437,7 @@ void StackCheckStub::Generate(MacroAssembler* masm) {
   __ push(eax);
 
   // Do tail-call to runtime routine.
-  __ TailCallRuntime(ExternalReference(Runtime::kStackGuard), 1);
+  __ TailCallRuntime(ExternalReference(Runtime::kStackGuard), 1, 1);
 }
 
 
@@ -7469,6 +7469,13 @@ void CallFunctionStub::Generate(MacroAssembler* masm) {
 }
 
 
+int CEntryStub::MinorKey() {
+  ASSERT(result_size_ <= 2);
+  // Result returned in eax, or eax+edx if result_size_ is 2.
+  return 0;
+}
+
+
 void CEntryStub::GenerateThrowTOS(MacroAssembler* masm) {
   // eax holds the exception.