Fast-compiler: Add stack limit checks to back edges of while, do-while and for.

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index 11cdfc3c4c6e27356f37d69777eab339a5cf30cc..e0af1edc7a4b865507cf9cdec45d014f0db4b8b2 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -98,6 +98,12 @@ class MacroAssembler: public Assembler {
 #endif
 
   // ---------------------------------------------------------------------------
+  // Stack limit support
+
+  // Do simple test for stack overflow. This doesn't handle an overflow.
+  void StackLimitCheck(Label* on_stack_limit_hit);
+
+  // ---------------------------------------------------------------------------
   // Activation frames
 
   void EnterInternalFrame() { EnterFrame(StackFrame::INTERNAL); }