Fast elements conversions in crankshaft using generated code.

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index 896ffad054e41f0a9a93319d86b19db0b2ae398b..9d609e56ce14c92b301dbfd57cdc79b7eb6a0de2 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -420,7 +420,7 @@ void FastElementsConversionStub::Generate(MacroAssembler* masm) {
     if (from_ == FAST_SMI_ONLY_ELEMENTS) {
       GenerateSmiOnlyToObject(masm);
     } else if (from_ == FAST_DOUBLE_ELEMENTS) {
-      GenerateDoubleToObject(masm, strict_mode_);
+      GenerateDoubleToObject(masm, TRANSITION_AND_STORE, strict_mode_);
     } else {
       UNREACHABLE();
     }
@@ -428,7 +428,7 @@ void FastElementsConversionStub::Generate(MacroAssembler* masm) {
                                                      is_jsarray_,
                                                      FAST_ELEMENTS);
   } else if (from_ == FAST_SMI_ONLY_ELEMENTS && to_ == FAST_DOUBLE_ELEMENTS) {
-    GenerateSmiOnlyToDouble(masm, strict_mode_);
+    GenerateSmiOnlyToDouble(masm, TRANSITION_AND_STORE, strict_mode_);
     KeyedStoreStubCompiler::GenerateStoreFastDoubleElement(masm, is_jsarray_);
   } else {
     UNREACHABLE();