X87: [Interpreter] Add ForInPrepare runtime function which returns a ObjectTriple.

src/x87/macro-assembler-x87.cc

Index: src/x87/macro-assembler-x87.cc
diff --git a/src/x87/macro-assembler-x87.cc b/src/x87/macro-assembler-x87.cc
index 7a0beb57bc7e3617e1d1881afbe2014ec7eafb12..918e07e2af52ba70bbe9ed59bfb2f0fc2d131273 100644
--- a/src/x87/macro-assembler-x87.cc
+++ b/src/x87/macro-assembler-x87.cc
@@ -936,7 +936,7 @@ void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) {
 }
 
 
-void MacroAssembler::EnterExitFrame(bool save_doubles) {
+void MacroAssembler::EnterExitFrame(int argc, bool save_doubles) {
   EnterExitFramePrologue();
 
   // Set up argc and argv in callee-saved registers.
@@ -945,7 +945,7 @@ void MacroAssembler::EnterExitFrame(bool save_doubles) {
   lea(esi, Operand(ebp, eax, times_4, offset));
 
   // Reserve space for argc, argv and isolate.
-  EnterExitFrameEpilogue(3, save_doubles);
+  EnterExitFrameEpilogue(argc, save_doubles);
 }