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

src/ia32/fast-codegen-ia32.cc

Index: src/ia32/fast-codegen-ia32.cc
diff --git a/src/ia32/fast-codegen-ia32.cc b/src/ia32/fast-codegen-ia32.cc
index a01d754e47a3bc03602a8f9f0b77fd21111f9650..deb50998d927ee89eeb567ca31e6691477d541ea 100644
--- a/src/ia32/fast-codegen-ia32.cc
+++ b/src/ia32/fast-codegen-ia32.cc
@@ -380,6 +380,7 @@ void FastCodeGenerator::VisitDeclaration(Declaration* decl) {
         }
         __ mov(CodeGenerator::ContextOperand(esi, slot->index()), eax);
         // No write barrier since the_hole_value is in old space.
+        ASSERT(!Heap::InNewSpace(*Factory::the_hole_value()));
       } else if (decl->fun() != NULL) {
         Visit(decl->fun());
         __ pop(eax);
@@ -391,7 +392,7 @@ void FastCodeGenerator::VisitDeclaration(Declaration* decl) {
           __ Check(equal, "Unexpected declaration in current context.");
         }
         __ mov(CodeGenerator::ContextOperand(esi, slot->index()), eax);
-        int offset = FixedArray::kHeaderSize + slot->index() * kPointerSize;
+        int offset = Context::SlotOffset(slot->index());
         __ RecordWrite(esi, offset, eax, ecx);
       }
       break;