Merge (7265, 7271] from bleeding_edge to experimental/gc branch....

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
===================================================================
--- src/ia32/lithium-ia32.cc	(revision 7563)
+++ src/ia32/lithium-ia32.cc	(working copy)
@@ -1633,8 +1633,9 @@
       LOperand* value = UseRegister(instr->value());
       bool needs_check = !instr->value()->type().IsSmi();
       if (needs_check) {
+        CpuFeatures* cpu_features = Isolate::Current()->cpu_features();
         LOperand* xmm_temp =
-            (instr->CanTruncateToInt32() && CpuFeatures::IsSupported(SSE3))
+            (instr->CanTruncateToInt32() && !cpu_features->IsSupported(SSE3))
             ? NULL
             : FixedTemp(xmm1);
         LTaggedToI* res = new LTaggedToI(value, xmm_temp);
@@ -1655,7 +1656,7 @@
     } else {
       ASSERT(to.IsInteger32());
       bool needs_temp = instr->CanTruncateToInt32() &&
-          !CpuFeatures::IsSupported(SSE3);
+          !Isolate::Current()->cpu_features()->IsSupported(SSE3);
       LOperand* value = needs_temp ?
           UseTempRegister(instr->value()) : UseRegister(instr->value());
       LOperand* temp = needs_temp ? TempRegister() : NULL;