Use xorps to break the cvtsi2sd unnecessary dependence due to its partially written

src/x64/stub-cache-x64.cc

Index: src/x64/stub-cache-x64.cc
diff --git a/src/x64/stub-cache-x64.cc b/src/x64/stub-cache-x64.cc
index 6c840ebaa42bdc435cb138b5bfdf72dc482e6ddf..1efa121d5db255548024a6569272f114800f8fe2 100644
--- a/src/x64/stub-cache-x64.cc
+++ b/src/x64/stub-cache-x64.cc
@@ -838,7 +838,7 @@ void BaseStoreStubCompiler::GenerateStoreTransition(MacroAssembler* masm,
 
     __ JumpIfNotSmi(value_reg, &heap_number);
     __ SmiToInteger32(scratch1, value_reg);
-    __ cvtlsi2sd(xmm0, scratch1);
+    __ Cvtlsi2sd(xmm0, scratch1);
     __ jmp(&do_store);
 
     __ bind(&heap_number);
@@ -992,7 +992,7 @@ void BaseStoreStubCompiler::GenerateStoreField(MacroAssembler* masm,
     Label do_store, heap_number;
     __ JumpIfNotSmi(value_reg, &heap_number);
     __ SmiToInteger32(scratch2, value_reg);
-    __ cvtlsi2sd(xmm0, scratch2);
+    __ Cvtlsi2sd(xmm0, scratch2);
     __ jmp(&do_store);
 
     __ bind(&heap_number);