Require SSE2 support for the ia32 port.

test/cctest/test-assembler-ia32.cc

 // Copyright 2011 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 134 matching lines @@
   int res = f(10);
   ::printf("f() = %d\n", res);
   CHECK_EQ(3628800, res);
 }
 
 
 typedef int (*F3)(float x);
 
 TEST(AssemblerIa323) {
   CcTest::InitializeVM();
-  if (!CpuFeatures::IsSupported(SSE2)) return;
 
   Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
   HandleScope scope(isolate);
 
   v8::internal::byte buffer[256];
   Assembler assm(isolate, buffer, sizeof buffer);
 
-  CHECK(CpuFeatures::IsSupported(SSE2));
-  { CpuFeatureScope fscope(&assm, SSE2);
-    __ cvttss2si(eax, Operand(esp, 4));
-    __ ret(0);
-  }
+  __ cvttss2si(eax, Operand(esp, 4));
+  __ ret(0);
 
   CodeDesc desc;
   assm.GetCode(&desc);
   Handle<Code> code = isolate->factory()->NewCode(
       desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
   // don't print the code - our disassembler can't handle cvttss2si
   // instead print bytes
   Disassembler::Dump(stdout,
                      code->instruction_start(),
                      code->instruction_start() + code->instruction_size());
   F3 f = FUNCTION_CAST<F3>(code->entry());
   int res = f(static_cast<float>(-3.1415));
   ::printf("f() = %d\n", res);
   CHECK_EQ(-3, res);
 }
 
 
 typedef int (*F4)(double x);
 
 TEST(AssemblerIa324) {
   CcTest::InitializeVM();
-  if (!CpuFeatures::IsSupported(SSE2)) return;
 
   Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
   HandleScope scope(isolate);
 
   v8::internal::byte buffer[256];
   Assembler assm(isolate, buffer, sizeof buffer);
 
-  CHECK(CpuFeatures::IsSupported(SSE2));
-  CpuFeatureScope fscope(&assm, SSE2);
   __ cvttsd2si(eax, Operand(esp, 4));
   __ ret(0);
 
   CodeDesc desc;
   assm.GetCode(&desc);
   Handle<Code> code = isolate->factory()->NewCode(
       desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
   // don't print the code - our disassembler can't handle cvttsd2si
   // instead print bytes
   Disassembler::Dump(stdout,
@@ skipping 25 matching lines @@
   F0 f = FUNCTION_CAST<F0>(code->entry());
   int res = f();
   CHECK_EQ(42, res);
 }
 
 
 typedef double (*F5)(double x, double y);
 
 TEST(AssemblerIa326) {
   CcTest::InitializeVM();
-  if (!CpuFeatures::IsSupported(SSE2)) return;
 
   Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
   HandleScope scope(isolate);
   v8::internal::byte buffer[256];
   Assembler assm(isolate, buffer, sizeof buffer);
 
-  CpuFeatureScope fscope(&assm, SSE2);
   __ movsd(xmm0, Operand(esp, 1 * kPointerSize));
   __ movsd(xmm1, Operand(esp, 3 * kPointerSize));
   __ addsd(xmm0, xmm1);
   __ mulsd(xmm0, xmm1);
   __ subsd(xmm0, xmm1);
   __ divsd(xmm0, xmm1);
   // Copy xmm0 to st(0) using eight bytes of stack.
   __ sub(esp, Immediate(8));
   __ movsd(Operand(esp, 0), xmm0);
   __ fld_d(Operand(esp, 0));
@@ skipping 16 matching lines @@
   double res = f(2.2, 1.1);
   ::printf("f() = %f\n", res);
   CHECK(2.29 < res && res < 2.31);
 }
 
 
 typedef double (*F6)(int x);
 
 TEST(AssemblerIa328) {
   CcTest::InitializeVM();
-  if (!CpuFeatures::IsSupported(SSE2)) return;
 
   Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
   HandleScope scope(isolate);
   v8::internal::byte buffer[256];
   Assembler assm(isolate, buffer, sizeof buffer);
-  CpuFeatureScope fscope(&assm, SSE2);
   __ mov(eax, Operand(esp, 4));
   __ cvtsi2sd(xmm0, eax);
   // Copy xmm0 to st(0) using eight bytes of stack.
   __ sub(esp, Immediate(8));
   __ movsd(Operand(esp, 0), xmm0);
   __ fld_d(Operand(esp, 0));
   __ add(esp, Immediate(8));
   __ ret(0);
   CodeDesc desc;
   assm.GetCode(&desc);
@@ skipping 150 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
   HandleScope scope(isolate);
 
   CHECK(args[0]->IsArray());
   v8::Local<v8::Array> vec = v8::Local<v8::Array>::Cast(args[0]);
   CHECK_EQ(ELEMENT_COUNT, vec->Length());
 
   v8::internal::byte buffer[256];
   Assembler assm(isolate, buffer, sizeof buffer);
 
-  ASSERT(CpuFeatures::IsSupported(SSE2));
-  CpuFeatureScope fscope(&assm, SSE2);
-
   // Remove return address from the stack for fix stack frame alignment.
   __ pop(ecx);
 
   // Store input vector on the stack.
   for (int i = 0; i < ELEMENT_COUNT; ++i) {
     __ push(Immediate(vec->Get(i)->Int32Value()));
   }
 
   // Read vector into a xmm register.
   __ pxor(xmm0, xmm0);
@@ skipping 15 matching lines @@
       desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
 
   F0 f = FUNCTION_CAST<F0>(code->entry());
   int res = f();
   args.GetReturnValue().Set(v8::Integer::New(CcTest::isolate(), res));
 }
 
 
 TEST(StackAlignmentForSSE2) {
   CcTest::InitializeVM();
-  if (!CpuFeatures::IsSupported(SSE2)) return;
-
   CHECK_EQ(0, OS::ActivationFrameAlignment() % 16);
 
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope handle_scope(isolate);
   v8::Handle<v8::ObjectTemplate> global_template =
       v8::ObjectTemplate::New(isolate);
   global_template->Set(v8_str("do_sse2"),
                        v8::FunctionTemplate::New(isolate, DoSSE2));
 
   LocalContext env(NULL, global_template);
@@ skipping 18 matching lines @@
   // The mask should be 0b1000.
   CHECK_EQ(8, result->Int32Value());
 }
 
 #undef ELEMENT_COUNT
 #endif  // __GNUC__
 
 
 TEST(AssemblerIa32Extractps) {
   CcTest::InitializeVM();
-  if (!CpuFeatures::IsSupported(SSE2) ||
-      !CpuFeatures::IsSupported(SSE4_1)) return;
+  if (!CpuFeatures::IsSupported(SSE4_1)) return;
 
   Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
   HandleScope scope(isolate);
   v8::internal::byte buffer[256];
   MacroAssembler assm(isolate, buffer, sizeof buffer);
-  { CpuFeatureScope fscope2(&assm, SSE2);
-    CpuFeatureScope fscope41(&assm, SSE4_1);
+  { CpuFeatureScope fscope41(&assm, SSE4_1);
     __ movsd(xmm1, Operand(esp, 4));
     __ extractps(eax, xmm1, 0x1);
     __ ret(0);
   }
 
   CodeDesc desc;
   assm.GetCode(&desc);
   Handle<Code> code = isolate->factory()->NewCode(
       desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
 #ifdef OBJECT_PRINT
   code->Print();
 #endif
 
   F4 f = FUNCTION_CAST<F4>(code->entry());
   uint64_t value1 = V8_2PART_UINT64_C(0x12345678, 87654321);
   CHECK_EQ(0x12345678, f(uint64_to_double(value1)));
   uint64_t value2 = V8_2PART_UINT64_C(0x87654321, 12345678);
   CHECK_EQ(0x87654321, f(uint64_to_double(value2)));
 }
 
 
 typedef int (*F8)(float x, float y);
 TEST(AssemblerIa32SSE) {
   CcTest::InitializeVM();
-  if (!CpuFeatures::IsSupported(SSE2)) return;
 
   Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
   HandleScope scope(isolate);
   v8::internal::byte buffer[256];
   MacroAssembler assm(isolate, buffer, sizeof buffer);
   {
-    CpuFeatureScope fscope(&assm, SSE2);
     __ movss(xmm0, Operand(esp, kPointerSize));
     __ movss(xmm1, Operand(esp, 2 * kPointerSize));
     __ shufps(xmm0, xmm0, 0x0);
     __ shufps(xmm1, xmm1, 0x0);
     __ movaps(xmm2, xmm1);
     __ addps(xmm2, xmm0);
     __ mulps(xmm2, xmm1);
     __ subps(xmm2, xmm0);
     __ divps(xmm2, xmm1);
     __ cvttss2si(eax, xmm2);
     __ ret(0);
   }
 
   CodeDesc desc;
   assm.GetCode(&desc);
   Handle<Code> code = isolate->factory()->NewCode(
       desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
 #ifdef OBJECT_PRINT
   code->Print();
 #endif
 
   F8 f = FUNCTION_CAST<F8>(code->entry());
   CHECK_EQ(2, f(1.0, 2.0));
 }
 
 
 #undef __