Require SSE2 support for the ia32 port.

src/x64/code-stubs-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "bootstrapper.h"
 #include "code-stubs.h"
@@ skipping 4179 matching lines @@
 
 void StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(
     Isolate* isolate) {
   StoreBufferOverflowStub stub1(isolate, kDontSaveFPRegs);
   stub1.GetCode();
   StoreBufferOverflowStub stub2(isolate, kSaveFPRegs);
   stub2.GetCode();
 }
 
 
-bool CodeStub::CanUseFPRegisters() {
-  return true;  // Always have SSE2 on x64.
-}
-
-
 // Takes the input in 3 registers: address_ value_ and object_.  A pointer to
 // the value has just been written into the object, now this stub makes sure
 // we keep the GC informed.  The word in the object where the value has been
 // written is in the address register.
 void RecordWriteStub::Generate(MacroAssembler* masm) {
   Label skip_to_incremental_noncompacting;
   Label skip_to_incremental_compacting;
 
   // The first two instructions are generated with labels so as to get the
   // offset fixed up correctly by the bind(Label*) call.  We patch it back and
@@ skipping 254 matching lines @@
   __ StoreNumberToDoubleElements(rax,
                                  r9,
                                  r11,
                                  xmm0,
                                  &slow_elements);
   __ ret(0);
 }
 
 
 void StubFailureTrampolineStub::Generate(MacroAssembler* masm) {
-  CEntryStub ces(isolate(), 1, fp_registers_ ? kSaveFPRegs : kDontSaveFPRegs);
+  CEntryStub ces(isolate(), 1, kSaveFPRegs);
   __ Call(ces.GetCode(), RelocInfo::CODE_TARGET);
   int parameter_count_offset =
       StubFailureTrampolineFrame::kCallerStackParameterCountFrameOffset;
   __ movp(rbx, MemOperand(rbp, parameter_count_offset));
   masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE);
   __ PopReturnAddressTo(rcx);
   int additional_offset = function_mode_ == JS_FUNCTION_STUB_MODE
       ? kPointerSize
       : 0;
   __ leap(rsp, MemOperand(rsp, rbx, times_pointer_size, additional_offset));
@@ skipping 537 matching lines @@
                               return_value_operand,
                               NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64