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

src/ia32/lithium-codegen-ia32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 22 matching lines @@
 #include "ic.h"
 #include "code-stubs.h"
 #include "deoptimizer.h"
 #include "stub-cache.h"
 #include "codegen.h"
 
 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 {
  public:
   SafepointGenerator(LCodeGen* codegen,
                      LPointerMap* pointers,
                      Safepoint::DeoptMode mode)
       : codegen_(codegen),
         pointers_(pointers),
         deopt_mode_(mode) {}
@@ skipping 2787 matching lines @@
   if (instr->hydrogen()->NeedsWriteBarrier()) {
     HType type = instr->hydrogen()->value()->type();
     SmiCheck check_needed =
         type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK;
     Register temp = ToRegister(instr->temp());
     int offset = Context::SlotOffset(instr->slot_index());
     __ RecordWriteContextSlot(context,
                               offset,
                               value,
                               temp,
-                              kSaveFPRegs,
+                              GetSaveFPRegsMode(),
                               EMIT_REMEMBERED_SET,
                               check_needed);
   }
 
   __ bind(&skip_assignment);
 }
 
 
 void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) {
   Register object = ToRegister(instr->object());
@@ skipping 1311 matching lines @@
     } else {
       Register temp = ToRegister(instr->temp());
       Register temp_map = ToRegister(instr->temp_map());
       __ mov(temp_map, instr->transition());
       __ mov(FieldOperand(object, HeapObject::kMapOffset), temp_map);
       // Update the write barrier for the map field.
       __ RecordWriteField(object,
                           HeapObject::kMapOffset,
                           temp_map,
                           temp,
-                          kSaveFPRegs,
+                          GetSaveFPRegsMode(),
                           OMIT_REMEMBERED_SET,
                           OMIT_SMI_CHECK);
     }
   }
 
   // Do the store.
   HType type = instr->hydrogen()->value()->type();
   SmiCheck check_needed =
       type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK;
   if (instr->is_in_object()) {
     __ mov(FieldOperand(object, offset), value);
     if (instr->hydrogen()->NeedsWriteBarrier()) {
       Register temp = ToRegister(instr->temp());
       // Update the write barrier for the object for in-object properties.
       __ RecordWriteField(object,
                           offset,
                           value,
                           temp,
-                          kSaveFPRegs,
+                          GetSaveFPRegsMode(),
                           EMIT_REMEMBERED_SET,
                           check_needed);
     }
   } else {
     Register temp = ToRegister(instr->temp());
     __ mov(temp, FieldOperand(object, JSObject::kPropertiesOffset));
     __ mov(FieldOperand(temp, offset), value);
     if (instr->hydrogen()->NeedsWriteBarrier()) {
       // Update the write barrier for the properties array.
       // object is used as a scratch register.
       __ RecordWriteField(temp,
                           offset,
                           value,
                           object,
-                          kSaveFPRegs,
+                          GetSaveFPRegsMode(),
                           EMIT_REMEMBERED_SET,
                           check_needed);
     }
   }
 }
 
 
 void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) {
   ASSERT(ToRegister(instr->context()).is(esi));
   ASSERT(ToRegister(instr->object()).is(edx));
@@ skipping 126 matching lines @@
   if (instr->hydrogen()->NeedsWriteBarrier()) {
     ASSERT(!instr->key()->IsConstantOperand());
     HType type = instr->hydrogen()->value()->type();
     SmiCheck check_needed =
         type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK;
     // Compute address of modified element and store it into key register.
     __ lea(key, operand);
     __ RecordWrite(elements,
                    key,
                    value,
-                   kSaveFPRegs,
+                   GetSaveFPRegsMode(),
                    EMIT_REMEMBERED_SET,
                    check_needed);
   }
 }
 
 
 void LCodeGen::DoStoreKeyed(LStoreKeyed* instr) {
   // By cases...external, fast-double, fast
   if (instr->is_external()) {
     DoStoreKeyedExternalArray(instr);
@@ skipping 1879 matching lines @@
                               FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32