test/cctest/test-assembler-ia32.cc - platform/external/v8 - Git at Google

 // 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
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 #include <stdlib.h>

 #include "v8.h"

 #include "disassembler.h"
 #include "factory.h"
 #include "macro-assembler.h"
 #include "platform.h"
 #include "serialize.h"
 #include "cctest.h"

 using namespace v8::internal;


 typedef int (*F0)();
 typedef int (*F1)(int x);
 typedef int (*F2)(int x, int y);


 static v8::Persistent<v8::Context> env;


 static void InitializeVM() {
   if (env.IsEmpty()) {
     env = v8::Context::New();
   }
 }


 #define __ assm.

 TEST(AssemblerIa320) {
   InitializeVM();
   v8::HandleScope scope;

   v8::internal::byte buffer[256];
   Assembler assm(Isolate::Current(), buffer, sizeof buffer);

   __ mov(eax, Operand(esp, 4));
   __ add(eax, Operand(esp, 8));
   __ ret(0);

   CodeDesc desc;
   assm.GetCode(&desc);
   Object* code = HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
   CHECK(code->IsCode());
 #ifdef OBJECT_PRINT
   Code::cast(code)->Print();
 #endif
   F2 f = FUNCTION_CAST<F2>(Code::cast(code)->entry());
   int res = f(3, 4);
   ::printf("f() = %d\n", res);
   CHECK_EQ(7, res);
 }


 TEST(AssemblerIa321) {
   InitializeVM();
   v8::HandleScope scope;

   v8::internal::byte buffer[256];
   Assembler assm(Isolate::Current(), buffer, sizeof buffer);
   Label L, C;

   __ mov(edx, Operand(esp, 4));
   __ xor_(eax, Operand(eax));  // clear eax
   __ jmp(&C);

   __ bind(&L);
   __ add(eax, Operand(edx));
   __ sub(Operand(edx), Immediate(1));

   __ bind(&C);
   __ test(edx, Operand(edx));
   __ j(not_zero, &L);
   __ ret(0);

   CodeDesc desc;
   assm.GetCode(&desc);
   Object* code = HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
   CHECK(code->IsCode());
 #ifdef OBJECT_PRINT
   Code::cast(code)->Print();
 #endif
   F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());
   int res = f(100);
   ::printf("f() = %d\n", res);
   CHECK_EQ(5050, res);
 }


 TEST(AssemblerIa322) {
   InitializeVM();
   v8::HandleScope scope;

   v8::internal::byte buffer[256];
   Assembler assm(Isolate::Current(), buffer, sizeof buffer);
   Label L, C;

   __ mov(edx, Operand(esp, 4));
   __ mov(eax, 1);
   __ jmp(&C);

   __ bind(&L);
   __ imul(eax, Operand(edx));
   __ sub(Operand(edx), Immediate(1));

   __ bind(&C);
   __ test(edx, Operand(edx));
   __ j(not_zero, &L);
   __ ret(0);

   // some relocated stuff here, not executed
   __ mov(eax, FACTORY->true_value());
   __ jmp(NULL, RelocInfo::RUNTIME_ENTRY);

   CodeDesc desc;
   assm.GetCode(&desc);
   Object* code = HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
   CHECK(code->IsCode());
 #ifdef OBJECT_PRINT
   Code::cast(code)->Print();
 #endif
   F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());
   int res = f(10);
   ::printf("f() = %d\n", res);
   CHECK_EQ(3628800, res);
 }


 typedef int (*F3)(float x);

 TEST(AssemblerIa323) {
   InitializeVM();
   if (!CpuFeatures::IsSupported(SSE2)) return;

   v8::HandleScope scope;

   v8::internal::byte buffer[256];
   Assembler assm(Isolate::Current(), buffer, sizeof buffer);

   CHECK(CpuFeatures::IsSupported(SSE2));
   { CpuFeatures::Scope fscope(SSE2);
     __ cvttss2si(eax, Operand(esp, 4));
     __ ret(0);
   }

   CodeDesc desc;
   assm.GetCode(&desc);
   Code* code = Code::cast(HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
   // 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) {
   InitializeVM();
   if (!CpuFeatures::IsSupported(SSE2)) return;

   v8::HandleScope scope;

   v8::internal::byte buffer[256];
   Assembler assm(Isolate::Current(), buffer, sizeof buffer);

   CHECK(CpuFeatures::IsSupported(SSE2));
   CpuFeatures::Scope fscope(SSE2);
   __ cvttsd2si(eax, Operand(esp, 4));
   __ ret(0);

   CodeDesc desc;
   assm.GetCode(&desc);
   Code* code = Code::cast(HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
   // don't print the code - our disassembler can't handle cvttsd2si
   // instead print bytes
   Disassembler::Dump(stdout,
                      code->instruction_start(),
                      code->instruction_start() + code->instruction_size());
   F4 f = FUNCTION_CAST<F4>(code->entry());
   int res = f(2.718281828);
   ::printf("f() = %d\n", res);
   CHECK_EQ(2, res);
 }


 static int baz = 42;
 TEST(AssemblerIa325) {
   InitializeVM();
   v8::HandleScope scope;

   v8::internal::byte buffer[256];
   Assembler assm(Isolate::Current(), buffer, sizeof buffer);

   __ mov(eax, Operand(reinterpret_cast<intptr_t>(&baz), RelocInfo::NONE));
   __ ret(0);

   CodeDesc desc;
   assm.GetCode(&desc);
   Code* code = Code::cast(HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
   F0 f = FUNCTION_CAST<F0>(code->entry());
   int res = f();
   CHECK_EQ(42, res);
 }


 typedef double (*F5)(double x, double y);

 TEST(AssemblerIa326) {
   InitializeVM();
   if (!CpuFeatures::IsSupported(SSE2)) return;

   v8::HandleScope scope;
   CHECK(CpuFeatures::IsSupported(SSE2));
   CpuFeatures::Scope fscope(SSE2);
   v8::internal::byte buffer[256];
   Assembler assm(Isolate::Current(), buffer, sizeof buffer);

   __ movdbl(xmm0, Operand(esp, 1 * kPointerSize));
   __ movdbl(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(Operand(esp), Immediate(8));
   __ movdbl(Operand(esp, 0), xmm0);
   __ fld_d(Operand(esp, 0));
   __ add(Operand(esp), Immediate(8));
   __ ret(0);

   CodeDesc desc;
   assm.GetCode(&desc);
   Code* code = Code::cast(HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
 #ifdef DEBUG
   ::printf("\n---\n");
   // don't print the code - our disassembler can't handle SSE instructions
   // instead print bytes
   Disassembler::Dump(stdout,
                      code->instruction_start(),
                      code->instruction_start() + code->instruction_size());
 #endif
   F5 f = FUNCTION_CAST<F5>(code->entry());
   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) {
   InitializeVM();
   if (!CpuFeatures::IsSupported(SSE2)) return;

   v8::HandleScope scope;
   CHECK(CpuFeatures::IsSupported(SSE2));
   CpuFeatures::Scope fscope(SSE2);
   v8::internal::byte buffer[256];
   Assembler assm(Isolate::Current(), 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));
   __ add(Operand(esp), Immediate(8));
   __ ret(0);
   CodeDesc desc;
   assm.GetCode(&desc);
   Code* code = Code::cast(HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
   CHECK(code->IsCode());
 #ifdef OBJECT_PRINT
   Code::cast(code)->Print();
 #endif
   F6 f = FUNCTION_CAST<F6>(Code::cast(code)->entry());
   double res = f(12);

   ::printf("f() = %f\n", res);
   CHECK(11.99 < res && res < 12.001);
 }


 typedef int (*F7)(double x, double y);

 TEST(AssemblerIa329) {
   InitializeVM();
   v8::HandleScope scope;
   v8::internal::byte buffer[256];
   MacroAssembler assm(Isolate::Current(), buffer, sizeof buffer);
   enum { kEqual = 0, kGreater = 1, kLess = 2, kNaN = 3, kUndefined = 4 };
   Label equal_l, less_l, greater_l, nan_l;
   __ fld_d(Operand(esp, 3 * kPointerSize));
   __ fld_d(Operand(esp, 1 * kPointerSize));
   __ FCmp();
   __ j(parity_even, &nan_l);
   __ j(equal, &equal_l);
   __ j(below, &less_l);
   __ j(above, &greater_l);

   __ mov(eax, kUndefined);
   __ ret(0);

   __ bind(&equal_l);
   __ mov(eax, kEqual);
   __ ret(0);

   __ bind(&greater_l);
   __ mov(eax, kGreater);
   __ ret(0);

   __ bind(&less_l);
   __ mov(eax, kLess);
   __ ret(0);

   __ bind(&nan_l);
   __ mov(eax, kNaN);
   __ ret(0);


   CodeDesc desc;
   assm.GetCode(&desc);
   Code* code = Code::cast(HEAP->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
   CHECK(code->IsCode());
 #ifdef OBJECT_PRINT
   Code::cast(code)->Print();
 #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));
 }


 TEST(AssemblerIa3210) {
   // Test chaining of label usages within instructions (issue 1644).
   InitializeVM();
   v8::HandleScope scope;
   Assembler assm(Isolate::Current(), NULL, 0);

   Label target;
   __ j(equal, &target);
   __ j(not_equal, &target);
   __ bind(&target);
   __ nop();
 }

 #undef __
	// 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
	// with the distribution.
	// * Neither the name of Google Inc. nor the names of its
	// contributors may be used to endorse or promote products derived
	// from this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	#include <stdlib.h>

	#include "v8.h"

	#include "disassembler.h"
	#include "factory.h"
	#include "macro-assembler.h"
	#include "platform.h"
	#include "serialize.h"
	#include "cctest.h"

	using namespace v8::internal;


	typedef int (*F0)();
	typedef int (*F1)(int x);
	typedef int (*F2)(int x, int y);


	static v8::Persistent<v8::Context> env;


	static void InitializeVM() {
	if (env.IsEmpty()) {
	env = v8::Context::New();
	}
	}


	#define __ assm.

	TEST(AssemblerIa320) {
	InitializeVM();
	v8::HandleScope scope;

	v8::internal::byte buffer[256];
	Assembler assm(Isolate::Current(), buffer, sizeof buffer);

	__ mov(eax, Operand(esp, 4));
	__ add(eax, Operand(esp, 8));
	__ ret(0);

	CodeDesc desc;
	assm.GetCode(&desc);
	Object* code = HEAP->CreateCode(
	desc,
	Code::ComputeFlags(Code::STUB),
	Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
	CHECK(code->IsCode());
	#ifdef OBJECT_PRINT
	Code::cast(code)->Print();
	#endif
	F2 f = FUNCTION_CAST<F2>(Code::cast(code)->entry());
	int res = f(3, 4);
	::printf("f() = %d\n", res);
	CHECK_EQ(7, res);
	}


	TEST(AssemblerIa321) {
	InitializeVM();
	v8::HandleScope scope;

	v8::internal::byte buffer[256];
	Assembler assm(Isolate::Current(), buffer, sizeof buffer);
	Label L, C;

	__ mov(edx, Operand(esp, 4));
	__ xor_(eax, Operand(eax)); // clear eax
	__ jmp(&C);

	__ bind(&L);
	__ add(eax, Operand(edx));
	__ sub(Operand(edx), Immediate(1));

	__ bind(&C);
	__ test(edx, Operand(edx));
	__ j(not_zero, &L);
	__ ret(0);

	CodeDesc desc;
	assm.GetCode(&desc);
	Object* code = HEAP->CreateCode(
	desc,
	Code::ComputeFlags(Code::STUB),
	Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
	CHECK(code->IsCode());
	#ifdef OBJECT_PRINT
	Code::cast(code)->Print();
	#endif
	F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());
	int res = f(100);
	::printf("f() = %d\n", res);
	CHECK_EQ(5050, res);
	}


	TEST(AssemblerIa322) {
	InitializeVM();
	v8::HandleScope scope;

	v8::internal::byte buffer[256];
	Assembler assm(Isolate::Current(), buffer, sizeof buffer);
	Label L, C;

	__ mov(edx, Operand(esp, 4));
	__ mov(eax, 1);
	__ jmp(&C);

	__ bind(&L);
	__ imul(eax, Operand(edx));
	__ sub(Operand(edx), Immediate(1));

	__ bind(&C);
	__ test(edx, Operand(edx));
	__ j(not_zero, &L);
	__ ret(0);

	// some relocated stuff here, not executed
	__ mov(eax, FACTORY->true_value());
	__ jmp(NULL, RelocInfo::RUNTIME_ENTRY);

	CodeDesc desc;
	assm.GetCode(&desc);
	Object* code = HEAP->CreateCode(
	desc,
	Code::ComputeFlags(Code::STUB),
	Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
	CHECK(code->IsCode());
	#ifdef OBJECT_PRINT
	Code::cast(code)->Print();
	#endif
	F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());
	int res = f(10);
	::printf("f() = %d\n", res);
	CHECK_EQ(3628800, res);
	}


	typedef int (*F3)(float x);

	TEST(AssemblerIa323) {
	InitializeVM();
	if (!CpuFeatures::IsSupported(SSE2)) return;

	v8::HandleScope scope;

	v8::internal::byte buffer[256];
	Assembler assm(Isolate::Current(), buffer, sizeof buffer);

	CHECK(CpuFeatures::IsSupported(SSE2));
	{ CpuFeatures::Scope fscope(SSE2);
	__ cvttss2si(eax, Operand(esp, 4));
	__ ret(0);
	}

	CodeDesc desc;
	assm.GetCode(&desc);
	Code* code = Code::cast(HEAP->CreateCode(
	desc,
	Code::ComputeFlags(Code::STUB),
	Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
	// 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) {
	InitializeVM();
	if (!CpuFeatures::IsSupported(SSE2)) return;

	v8::HandleScope scope;

	v8::internal::byte buffer[256];
	Assembler assm(Isolate::Current(), buffer, sizeof buffer);

	CHECK(CpuFeatures::IsSupported(SSE2));
	CpuFeatures::Scope fscope(SSE2);
	__ cvttsd2si(eax, Operand(esp, 4));
	__ ret(0);

	CodeDesc desc;
	assm.GetCode(&desc);
	Code* code = Code::cast(HEAP->CreateCode(
	desc,
	Code::ComputeFlags(Code::STUB),
	Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
	// don't print the code - our disassembler can't handle cvttsd2si
	// instead print bytes
	Disassembler::Dump(stdout,
	code->instruction_start(),
	code->instruction_start() + code->instruction_size());
	F4 f = FUNCTION_CAST<F4>(code->entry());
	int res = f(2.718281828);
	::printf("f() = %d\n", res);
	CHECK_EQ(2, res);
	}


	static int baz = 42;
	TEST(AssemblerIa325) {
	InitializeVM();
	v8::HandleScope scope;

	v8::internal::byte buffer[256];
	Assembler assm(Isolate::Current(), buffer, sizeof buffer);

	__ mov(eax, Operand(reinterpret_cast<intptr_t>(&baz), RelocInfo::NONE));
	__ ret(0);

	CodeDesc desc;
	assm.GetCode(&desc);
	Code* code = Code::cast(HEAP->CreateCode(
	desc,
	Code::ComputeFlags(Code::STUB),
	Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
	F0 f = FUNCTION_CAST<F0>(code->entry());
	int res = f();
	CHECK_EQ(42, res);
	}


	typedef double (*F5)(double x, double y);

	TEST(AssemblerIa326) {
	InitializeVM();
	if (!CpuFeatures::IsSupported(SSE2)) return;

	v8::HandleScope scope;
	CHECK(CpuFeatures::IsSupported(SSE2));
	CpuFeatures::Scope fscope(SSE2);
	v8::internal::byte buffer[256];
	Assembler assm(Isolate::Current(), buffer, sizeof buffer);

	__ movdbl(xmm0, Operand(esp, 1 * kPointerSize));
	__ movdbl(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(Operand(esp), Immediate(8));
	__ movdbl(Operand(esp, 0), xmm0);
	__ fld_d(Operand(esp, 0));
	__ add(Operand(esp), Immediate(8));
	__ ret(0);

	CodeDesc desc;
	assm.GetCode(&desc);
	Code* code = Code::cast(HEAP->CreateCode(
	desc,
	Code::ComputeFlags(Code::STUB),
	Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
	#ifdef DEBUG
	::printf("\n---\n");
	// don't print the code - our disassembler can't handle SSE instructions
	// instead print bytes
	Disassembler::Dump(stdout,
	code->instruction_start(),
	code->instruction_start() + code->instruction_size());
	#endif
	F5 f = FUNCTION_CAST<F5>(code->entry());
	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) {
	InitializeVM();
	if (!CpuFeatures::IsSupported(SSE2)) return;

	v8::HandleScope scope;
	CHECK(CpuFeatures::IsSupported(SSE2));
	CpuFeatures::Scope fscope(SSE2);
	v8::internal::byte buffer[256];
	Assembler assm(Isolate::Current(), 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));
	__ add(Operand(esp), Immediate(8));
	__ ret(0);
	CodeDesc desc;
	assm.GetCode(&desc);
	Code* code = Code::cast(HEAP->CreateCode(
	desc,
	Code::ComputeFlags(Code::STUB),
	Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
	CHECK(code->IsCode());
	#ifdef OBJECT_PRINT
	Code::cast(code)->Print();
	#endif
	F6 f = FUNCTION_CAST<F6>(Code::cast(code)->entry());
	double res = f(12);

	::printf("f() = %f\n", res);
	CHECK(11.99 < res && res < 12.001);
	}


	typedef int (*F7)(double x, double y);

	TEST(AssemblerIa329) {
	InitializeVM();
	v8::HandleScope scope;
	v8::internal::byte buffer[256];
	MacroAssembler assm(Isolate::Current(), buffer, sizeof buffer);
	enum { kEqual = 0, kGreater = 1, kLess = 2, kNaN = 3, kUndefined = 4 };
	Label equal_l, less_l, greater_l, nan_l;
	__ fld_d(Operand(esp, 3 * kPointerSize));
	__ fld_d(Operand(esp, 1 * kPointerSize));
	__ FCmp();
	__ j(parity_even, &nan_l);
	__ j(equal, &equal_l);
	__ j(below, &less_l);
	__ j(above, &greater_l);

	__ mov(eax, kUndefined);
	__ ret(0);

	__ bind(&equal_l);
	__ mov(eax, kEqual);
	__ ret(0);

	__ bind(&greater_l);
	__ mov(eax, kGreater);
	__ ret(0);

	__ bind(&less_l);
	__ mov(eax, kLess);
	__ ret(0);

	__ bind(&nan_l);
	__ mov(eax, kNaN);
	__ ret(0);


	CodeDesc desc;
	assm.GetCode(&desc);
	Code* code = Code::cast(HEAP->CreateCode(
	desc,
	Code::ComputeFlags(Code::STUB),
	Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
	CHECK(code->IsCode());
	#ifdef OBJECT_PRINT
	Code::cast(code)->Print();
	#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));
	}


	TEST(AssemblerIa3210) {
	// Test chaining of label usages within instructions (issue 1644).
	InitializeVM();
	v8::HandleScope scope;
	Assembler assm(Isolate::Current(), NULL, 0);

	Label target;
	__ j(equal, &target);
	__ j(not_equal, &target);
	__ bind(&target);
	__ nop();
	}

	#undef __