Patch (SSE3) for faster To(U)Int32 conversion in bit

test/cctest/test-assembler-ia32.cc

 // Copyright 2006-2008 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 146 matching lines @@
 
 typedef int (*F3)(float x);
 
 TEST(AssemblerIa323) {
   InitializeVM();
   v8::HandleScope scope;
 
   v8::internal::byte buffer[256];
   Assembler assm(buffer, sizeof buffer);
 
-  Serializer::disable();  // Needed for Probe when running without snapshot.
-  CpuFeatures::Probe();
   CHECK(CpuFeatures::IsSupported(CpuFeatures::SSE2));
   { CpuFeatures::Scope fscope(CpuFeatures::SSE2);
     __ cvttss2si(eax, Operand(esp, 4));
     __ ret(0);
   }
 
   CodeDesc desc;
   assm.GetCode(&desc);
   Code* code =
       Code::cast(Heap::CreateCode(desc, NULL, Code::ComputeFlags(Code::STUB)));
@@ skipping 11 matching lines @@
 
 typedef int (*F4)(double x);
 
 TEST(AssemblerIa324) {
   InitializeVM();
   v8::HandleScope scope;
 
   v8::internal::byte buffer[256];
   Assembler assm(buffer, sizeof buffer);
 
-  Serializer::disable();  // Needed for Probe when running without snapshot.
-  CpuFeatures::Probe();
   CHECK(CpuFeatures::IsSupported(CpuFeatures::SSE2));
   CpuFeatures::Scope fscope(CpuFeatures::SSE2);
   __ cvttsd2si(eax, Operand(esp, 4));
   __ ret(0);
 
   CodeDesc desc;
   assm.GetCode(&desc);
   Code* code =
       Code::cast(Heap::CreateCode(desc, NULL, Code::ComputeFlags(Code::STUB)));
   // don't print the code - our disassembler can't handle cvttsd2si
@@ skipping 27 matching lines @@
   int res = f();
   CHECK_EQ(42, res);
 }
 
 
 typedef double (*F5)(double x, double y);
 
 TEST(AssemblerIa326) {
   InitializeVM();
   v8::HandleScope scope;
-  Serializer::disable();  // Needed for Probe when running without snapshot.
-  CpuFeatures::Probe();
   CHECK(CpuFeatures::IsSupported(CpuFeatures::SSE2));
   CpuFeatures::Scope fscope(CpuFeatures::SSE2);
   v8::internal::byte buffer[256];
   Assembler assm(buffer, sizeof buffer);
 
   __ movdbl(xmm0, Operand(esp, 1 * kPointerSize));
   __ movdbl(xmm1, Operand(esp, 3 * kPointerSize));
   __ addsd(xmm0, xmm1);
   __ mulsd(xmm0, xmm1);
   __ subsd(xmm0, xmm1);
@@ skipping 22 matching lines @@
   ::printf("f() = %f\n", res);
   CHECK(2.29 < res && res < 2.31);
 }
 
 
 typedef double (*F6)(int x);
 
 TEST(AssemblerIa328) {
   InitializeVM();
   v8::HandleScope scope;
-  Serializer::disable();  // Needed for Probe when running without snapshot.
-  CpuFeatures::Probe();
   CHECK(CpuFeatures::IsSupported(CpuFeatures::SSE2));
   CpuFeatures::Scope fscope(CpuFeatures::SSE2);
   v8::internal::byte buffer[256];
   Assembler assm(buffer, sizeof buffer);
   __ mov(eax, Operand(esp, 4));
   __ cvtsi2sd(xmm0, Operand(eax));
   // Copy xmm0 to st(0) using eight bytes of stack.
   __ sub(Operand(esp), Immediate(8));
   __ movdbl(Operand(esp, 0), xmm0);
   __ fld_d(Operand(esp, 0));
@@ skipping 62 matching lines @@
 #endif
 
   F7 f = FUNCTION_CAST<F7>(Code::cast(code)->entry());
   CHECK_EQ(kLess, f(1.1, 2.2));
   CHECK_EQ(kEqual, f(2.2, 2.2));
   CHECK_EQ(kGreater, f(3.3, 2.2));
   CHECK_EQ(kNaN, f(OS::nan_value(), 1.1));
 }
 
 #undef __