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

src/ia32/builtins-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 625 matching lines @@
 }
 
 
 void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) {
   Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY);
 }
 
 
 void Builtins::Generate_NotifyOSR(MacroAssembler* masm) {
   // TODO(kasperl): Do we need to save/restore the XMM registers too?
+  // TODO(mvstanton): We should save these regs, do this in a future
+  // checkin.
 
   // For now, we are relying on the fact that Runtime::NotifyOSR
   // doesn't do any garbage collection which allows us to save/restore
   // the registers without worrying about which of them contain
   // pointers. This seems a bit fragile.
   __ pushad();
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
     __ CallRuntime(Runtime::kNotifyOSR, 0);
   }
@@ skipping 1129 matching lines @@
 
   // -------------------------------------------
   // Dont adapt arguments.
   // -------------------------------------------
   __ bind(&dont_adapt_arguments);
   __ jmp(edx);
 }
 
 
 void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
-  CpuFeatures::TryForceFeatureScope scope(SSE2);
-  if (!CpuFeatures::IsSupported(SSE2) && FLAG_debug_code) {
-    __ Abort("Unreachable code: Cannot optimize without SSE2 support.");
-    return;
-  }
-
   // Get the loop depth of the stack guard check. This is recorded in
   // a test(eax, depth) instruction right after the call.
   Label stack_check;
   __ mov(ebx, Operand(esp, 0));  // return address
   if (FLAG_debug_code) {
     __ cmpb(Operand(ebx, 0), Assembler::kTestAlByte);
     __ Assert(equal, "test eax instruction not found after loop stack check");
   }
   __ movzx_b(ebx, Operand(ebx, 1));  // depth
 
@@ skipping 49 matching lines @@
   Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR);
   generator.Generate();
 }
 
 
 #undef __
 }
 }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32