Make sure that on x86 we don't generate SSE2 code in the snapshot.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 6fa1c4243f4ca71a950a65e26f418618386cb58e..7ce2f2d1256a86c9bcde861f3c0305338b51a27a 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -40,6 +40,12 @@ namespace v8 {
 namespace internal {
 
 
+static SaveFPRegsMode GetSaveFPRegsMode() {
+  // We don't need to save floating point regs when generating the snapshot
+  return CpuFeatures::IsSafeForSnapshot(SSE2) ? kSaveFPRegs : kDontSaveFPRegs;
+}
+
+
 // When invoking builtins, we need to record the safepoint in the middle of
 // the invoke instruction sequence generated by the macro assembler.
 class SafepointGenerator : public CallWrapper {
@@ -2847,7 +2853,7 @@ void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) {
                               offset,
                               value,
                               temp,
-                              kSaveFPRegs,
+                              GetSaveFPRegsMode(),
                               EMIT_REMEMBERED_SET,
                               check_needed);
   }
@@ -4179,7 +4185,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
                           HeapObject::kMapOffset,
                           temp_map,
                           temp,
-                          kSaveFPRegs,
+                          GetSaveFPRegsMode(),
                           OMIT_REMEMBERED_SET,
                           OMIT_SMI_CHECK);
     }
@@ -4198,7 +4204,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
                           offset,
                           value,
                           temp,
-                          kSaveFPRegs,
+                          GetSaveFPRegsMode(),
                           EMIT_REMEMBERED_SET,
                           check_needed);
     }
@@ -4213,7 +4219,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
                           offset,
                           value,
                           object,
-                          kSaveFPRegs,
+                          GetSaveFPRegsMode(),
                           EMIT_REMEMBERED_SET,
                           check_needed);
     }
@@ -4360,7 +4366,7 @@ void LCodeGen::DoStoreKeyedFixedArray(LStoreKeyed* instr) {
     __ RecordWrite(elements,
                    key,
                    value,
-                   kSaveFPRegs,
+                   GetSaveFPRegsMode(),
                    EMIT_REMEMBERED_SET,
                    check_needed);
   }