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author | Trevor Norris <trev.norris@gmail.com> | 2013-07-22 15:26:27 -0700 |
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committer | Trevor Norris <trev.norris@gmail.com> | 2013-07-22 15:53:10 -0700 |
commit | 5777d7ab3038983d368046ab40eb34075f635348 (patch) | |
tree | da7c01759b83e7afa463cbaac095a051f158eb44 /deps/v8/test/cctest/test-assembler-ia32.cc | |
parent | 254b711155996e379a41a569a38dd98dbd7a6e47 (diff) | |
download | node-new-5777d7ab3038983d368046ab40eb34075f635348.tar.gz |
v8: upgrade to v8 3.20.7
Diffstat (limited to 'deps/v8/test/cctest/test-assembler-ia32.cc')
-rw-r--r-- | deps/v8/test/cctest/test-assembler-ia32.cc | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/deps/v8/test/cctest/test-assembler-ia32.cc b/deps/v8/test/cctest/test-assembler-ia32.cc index 880370f0f8..76eecc02e7 100644 --- a/deps/v8/test/cctest/test-assembler-ia32.cc +++ b/deps/v8/test/cctest/test-assembler-ia32.cc @@ -473,6 +473,95 @@ TEST(AssemblerMultiByteNop) { } +#ifdef __GNUC__ +#define ELEMENT_COUNT 4 + +void DoSSE2(const v8::FunctionCallbackInfo<v8::Value>& args) { + 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); + __ movdqa(xmm0, Operand(esp, 0)); + // Create mask and store it in the return register. + __ movmskps(eax, xmm0); + + // Remove unused data from the stack. + __ add(esp, Immediate(ELEMENT_COUNT * sizeof(int32_t))); + // Restore return address. + __ push(ecx); + + __ ret(0); + + CodeDesc desc; + assm.GetCode(&desc); + + Object* code = isolate->heap()->CreateCode( + desc, + Code::ComputeFlags(Code::STUB), + Handle<Code>())->ToObjectChecked(); + CHECK(code->IsCode()); + + F0 f = FUNCTION_CAST<F0>(Code::cast(code)->entry()); + int res = f(); + args.GetReturnValue().Set(v8::Integer::New(res)); +} + + +TEST(StackAlignmentForSSE2) { + CcTest::InitializeVM(); + if (!CpuFeatures::IsSupported(SSE2)) return; + + CHECK_EQ(0, OS::ActivationFrameAlignment() % 16); + + v8::Isolate* isolate = v8::Isolate::GetCurrent(); + v8::HandleScope handle_scope(isolate); + v8::Handle<v8::ObjectTemplate> global_template = v8::ObjectTemplate::New(); + global_template->Set(v8_str("do_sse2"), v8::FunctionTemplate::New(DoSSE2)); + + LocalContext env(NULL, global_template); + CompileRun( + "function foo(vec) {" + " return do_sse2(vec);" + "}"); + + v8::Local<v8::Object> global_object = env->Global(); + v8::Local<v8::Function> foo = + v8::Local<v8::Function>::Cast(global_object->Get(v8_str("foo"))); + + int32_t vec[ELEMENT_COUNT] = { -1, 1, 1, 1 }; + v8::Local<v8::Array> v8_vec = v8::Array::New(ELEMENT_COUNT); + for (int i = 0; i < ELEMENT_COUNT; i++) { + v8_vec->Set(i, v8_num(vec[i])); + } + + v8::Local<v8::Value> args[] = { v8_vec }; + v8::Local<v8::Value> result = foo->Call(global_object, 1, args); + + // The mask should be 0b1000. + CHECK_EQ(8, result->Int32Value()); +} + +#undef ELEMENT_COUNT +#endif // __GNUC__ #undef __ |