Enable stub generation using Hydrogen/Lithium (again)

src/ia32/assembler-ia32.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 37 matching lines @@
 // -----------------------------------------------------------------------------
 // Implementation of CpuFeatures
 
 #ifdef DEBUG
 bool CpuFeatures::initialized_ = false;
 #endif
 uint64_t CpuFeatures::supported_ = 0;
 uint64_t CpuFeatures::found_by_runtime_probing_ = 0;
 
 
+int IntelDoubleRegister::NumAllocatableRegisters() {
+  if (CpuFeatures::IsSupported(SSE2)) {
+    return XMMRegister::kNumAllocatableRegisters;
+  } else {
+    return X87TopOfStackProxyRegister::kNumAllocatableRegisters;
+  }
+}
+
+
+int IntelDoubleRegister::NumRegisters() {
+  if (CpuFeatures::IsSupported(SSE2)) {
+    return XMMRegister::kNumRegisters;
+  } else {
+    return X87TopOfStackProxyRegister::kNumRegisters;
+  }
+}
+
+
+const char* IntelDoubleRegister::AllocationIndexToString(int index) {
+  if (CpuFeatures::IsSupported(SSE2)) {
+    return XMMRegister::AllocationIndexToString(index);
+  } else {
+    return X87TopOfStackProxyRegister::AllocationIndexToString(index);
+  }
+}
+
+
 // The Probe method needs executable memory, so it uses Heap::CreateCode.
 // Allocation failure is silent and leads to safe default.
 void CpuFeatures::Probe() {
   ASSERT(!initialized_);
   ASSERT(supported_ == 0);
 #ifdef DEBUG
   initialized_ = true;
 #endif
   if (Serializer::enabled()) {
     supported_ |= OS::CpuFeaturesImpliedByPlatform();
@@ skipping 2144 matching lines @@
   EMIT(0xE7);
   emit_sse_operand(src, dst);
 }
 
 
 void Assembler::prefetch(const Operand& src, int level) {
   ASSERT(is_uint2(level));
   EnsureSpace ensure_space(this);
   EMIT(0x0F);
   EMIT(0x18);
-  XMMRegister code = { level };  // Emit hint number in Reg position of RegR/M.
+  // Emit hint number in Reg position of RegR/M.
+  XMMRegister code = XMMRegister(level);
   emit_sse_operand(code, src);
 }
 
 
 void Assembler::movdbl(XMMRegister dst, const Operand& src) {
   EnsureSpace ensure_space(this);
   movsd(dst, src);
 }
 
 
@@ skipping 431 matching lines @@
     fprintf(coverage_log, "%s\n", file_line);
     fflush(coverage_log);
   }
 }
 
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32