Revision: 10915
Author: [email protected]
Date: Mon Mar 5 00:17:16 2012
Log: Reland r10908 (Ensure consistent result of transcendental
function0.)
BUG=
TEST=
Review URL: https://chromiumcodereview.appspot.com/9583037
http://code.google.com/p/v8/source/detail?r=10915
Modified:
/branches/bleeding_edge/src/arm/codegen-arm.cc
/branches/bleeding_edge/src/arm/lithium-arm.cc
/branches/bleeding_edge/src/codegen.h
/branches/bleeding_edge/src/heap-inl.h
/branches/bleeding_edge/src/hydrogen-instructions.h
/branches/bleeding_edge/src/hydrogen.cc
/branches/bleeding_edge/src/ia32/code-stubs-ia32.cc
/branches/bleeding_edge/src/ia32/code-stubs-ia32.h
/branches/bleeding_edge/src/ia32/codegen-ia32.cc
/branches/bleeding_edge/src/ia32/lithium-ia32.cc
/branches/bleeding_edge/src/mips/codegen-mips.cc
/branches/bleeding_edge/src/mips/lithium-mips.cc
/branches/bleeding_edge/src/platform-nullos.cc
/branches/bleeding_edge/src/platform-posix.cc
/branches/bleeding_edge/src/platform-win32.cc
/branches/bleeding_edge/src/platform.h
/branches/bleeding_edge/src/x64/code-stubs-x64.cc
/branches/bleeding_edge/src/x64/code-stubs-x64.h
/branches/bleeding_edge/src/x64/codegen-x64.cc
/branches/bleeding_edge/src/x64/lithium-x64.cc
=======================================
--- /branches/bleeding_edge/src/arm/codegen-arm.cc Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/arm/codegen-arm.cc Mon Mar 5 00:17:16 2012
@@ -37,6 +37,19 @@
#define __ ACCESS_MASM(masm)
+TranscendentalFunction CreateTranscendentalFunction(
+ TranscendentalCache::Type type) {
+ switch (type) {
+ case TranscendentalCache::SIN: return &sin;
+ case TranscendentalCache::COS: return &cos;
+ case TranscendentalCache::TAN: return &tan;
+ case TranscendentalCache::LOG: return &log;
+ default: UNIMPLEMENTED();
+ }
+ return NULL;
+}
+
+
//
-------------------------------------------------------------------------
// Platform-specific RuntimeCallHelper functions.
=======================================
--- /branches/bleeding_edge/src/arm/lithium-arm.cc Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/arm/lithium-arm.cc Mon Mar 5 00:17:16 2012
@@ -1170,7 +1170,7 @@
LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation*
instr) {
BuiltinFunctionId op = instr->op();
- if (op == kMathLog || op == kMathSin || op == kMathCos) {
+ if (op == kMathLog || op == kMathSin || op == kMathCos || op ==
kMathTan) {
LOperand* input = UseFixedDouble(instr->value(), d2);
LUnaryMathOperation* result = new(zone()) LUnaryMathOperation(input,
NULL);
return MarkAsCall(DefineFixedDouble(result, d2), instr);
=======================================
--- /branches/bleeding_edge/src/codegen.h Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/codegen.h Mon Mar 5 00:17:16 2012
@@ -84,6 +84,15 @@
namespace v8 {
namespace internal {
+// Results of the library implementation of transcendental functions may
differ
+// from the one we use in our generated code. Therefore we use the same
+// generated code both in runtime and compiled code.
+typedef double (*TranscendentalFunction)(double x);
+
+TranscendentalFunction CreateTranscendentalFunction(
+ TranscendentalCache::Type type);
+
+
class ElementsTransitionGenerator : public AllStatic {
public:
static void GenerateSmiOnlyToObject(MacroAssembler* masm);
=======================================
--- /branches/bleeding_edge/src/heap-inl.h Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/heap-inl.h Mon Mar 5 00:17:16 2012
@@ -32,6 +32,7 @@
#include "isolate.h"
#include "list-inl.h"
#include "objects.h"
+#include "platform.h"
#include "v8-counters.h"
#include "store-buffer.h"
#include "store-buffer-inl.h"
@@ -658,15 +659,15 @@
case ATAN:
return atan(input);
case COS:
- return cos(input);
+ return fast_cos(input);
case EXP:
return exp(input);
case LOG:
- return log(input);
+ return fast_log(input);
case SIN:
- return sin(input);
+ return fast_sin(input);
case TAN:
- return tan(input);
+ return fast_tan(input);
default:
return 0.0; // Never happens.
}
=======================================
--- /branches/bleeding_edge/src/hydrogen-instructions.h Fri Mar 2 07:00:52
2012
+++ /branches/bleeding_edge/src/hydrogen-instructions.h Mon Mar 5 00:17:16
2012
@@ -1886,6 +1886,7 @@
case kMathLog:
case kMathSin:
case kMathCos:
+ case kMathTan:
set_representation(Representation::Double());
break;
default:
@@ -1916,6 +1917,7 @@
case kMathLog:
case kMathSin:
case kMathCos:
+ case kMathTan:
return Representation::Double();
case kMathAbs:
return representation();
=======================================
--- /branches/bleeding_edge/src/hydrogen.cc Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/hydrogen.cc Mon Mar 5 00:17:16 2012
@@ -5420,6 +5420,7 @@
case kMathLog:
case kMathSin:
case kMathCos:
+ case kMathTan:
if (expr->arguments()->length() == 1) {
HValue* argument = Pop();
HValue* context = environment()->LookupContext();
@@ -5480,6 +5481,7 @@
case kMathLog:
case kMathSin:
case kMathCos:
+ case kMathTan:
if (argument_count == 2 && check_type == RECEIVER_MAP_CHECK) {
AddCheckConstantFunction(expr, receiver, receiver_map, true);
HValue* argument = Pop();
=======================================
--- /branches/bleeding_edge/src/ia32/code-stubs-ia32.cc Fri Mar 2 07:00:52
2012
+++ /branches/bleeding_edge/src/ia32/code-stubs-ia32.cc Mon Mar 5 00:17:16
2012
@@ -2510,7 +2510,7 @@
__ fld_d(Operand(esp, 0));
__ add(esp, Immediate(kDoubleSize));
}
- GenerateOperation(masm);
+ GenerateOperation(masm, type_);
__ mov(Operand(ecx, 0), ebx);
__ mov(Operand(ecx, kIntSize), edx);
__ mov(Operand(ecx, 2 * kIntSize), eax);
@@ -2526,7 +2526,7 @@
__ sub(esp, Immediate(kDoubleSize));
__ movdbl(Operand(esp, 0), xmm1);
__ fld_d(Operand(esp, 0));
- GenerateOperation(masm);
+ GenerateOperation(masm, type_);
__ fstp_d(Operand(esp, 0));
__ movdbl(xmm1, Operand(esp, 0));
__ add(esp, Immediate(kDoubleSize));
@@ -2578,14 +2578,15 @@
}
-void TranscendentalCacheStub::GenerateOperation(MacroAssembler* masm) {
+void TranscendentalCacheStub::GenerateOperation(
+ MacroAssembler* masm, TranscendentalCache::Type type) {
// Only free register is edi.
// Input value is on FP stack, and also in ebx/edx.
// Input value is possibly in xmm1.
// Address of result (a newly allocated HeapNumber) may be in eax.
- if (type_ == TranscendentalCache::SIN ||
- type_ == TranscendentalCache::COS ||
- type_ == TranscendentalCache::TAN) {
+ if (type == TranscendentalCache::SIN ||
+ type == TranscendentalCache::COS ||
+ type == TranscendentalCache::TAN) {
// Both fsin and fcos require arguments in the range +/-2^63 and
// return NaN for infinities and NaN. They can share all code except
// the actual fsin/fcos operation.
@@ -2649,7 +2650,7 @@
// FPU Stack: input % 2*pi
__ bind(&in_range);
- switch (type_) {
+ switch (type) {
case TranscendentalCache::SIN:
__ fsin();
break;
@@ -2667,7 +2668,7 @@
}
__ bind(&done);
} else {
- ASSERT(type_ == TranscendentalCache::LOG);
+ ASSERT(type == TranscendentalCache::LOG);
__ fldln2();
__ fxch();
__ fyl2x();
=======================================
--- /branches/bleeding_edge/src/ia32/code-stubs-ia32.h Fri Mar 2 07:00:52
2012
+++ /branches/bleeding_edge/src/ia32/code-stubs-ia32.h Mon Mar 5 00:17:16
2012
@@ -49,6 +49,8 @@
ArgumentType argument_type)
: type_(type), argument_type_(argument_type) {}
void Generate(MacroAssembler* masm);
+ static void GenerateOperation(MacroAssembler* masm,
+ TranscendentalCache::Type type);
private:
TranscendentalCache::Type type_;
ArgumentType argument_type_;
@@ -56,7 +58,6 @@
Major MajorKey() { return TranscendentalCache; }
int MinorKey() { return type_ | argument_type_; }
Runtime::FunctionId RuntimeFunction();
- void GenerateOperation(MacroAssembler* masm);
};
=======================================
--- /branches/bleeding_edge/src/ia32/codegen-ia32.cc Fri Mar 2 07:00:52
2012
+++ /branches/bleeding_edge/src/ia32/codegen-ia32.cc Mon Mar 5 00:17:16
2012
@@ -30,6 +30,7 @@
#if defined(V8_TARGET_ARCH_IA32)
#include "codegen.h"
+#include "heap.h"
#include "macro-assembler.h"
namespace v8 {
@@ -55,6 +56,53 @@
#define __ masm.
+
+TranscendentalFunction CreateTranscendentalFunction(
+ TranscendentalCache::Type type) {
+ size_t actual_size;
+ // Allocate buffer in executable space.
+ byte* buffer = static_cast<byte*>(OS::Allocate(1 * KB,
+ &actual_size,
+ true));
+ if (buffer == NULL) {
+ // Fallback to library function if function cannot be created.
+ switch (type) {
+ case TranscendentalCache::SIN: return &sin;
+ case TranscendentalCache::COS: return &cos;
+ case TranscendentalCache::TAN: return &tan;
+ case TranscendentalCache::LOG: return &log;
+ default: UNIMPLEMENTED();
+ }
+ }
+
+ MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size));
+ // esp[1 * kPointerSize]: raw double input
+ // esp[0 * kPointerSize]: return address
+ // Move double input into registers.
+
+ __ push(ebx);
+ __ push(edx);
+ __ push(edi);
+ __ fld_d(Operand(esp, 4 * kPointerSize));
+ __ mov(ebx, Operand(esp, 4 * kPointerSize));
+ __ mov(edx, Operand(esp, 5 * kPointerSize));
+ TranscendentalCacheStub::GenerateOperation(&masm, type);
+ // The return value is expected to be on ST(0) of the FPU stack.
+ __ pop(edi);
+ __ pop(edx);
+ __ pop(ebx);
+ __ Ret();
+
+ CodeDesc desc;
+ masm.GetCode(&desc);
+ ASSERT(desc.reloc_size == 0);
+
+ CPU::FlushICache(buffer, actual_size);
+ OS::ProtectCode(buffer, actual_size);
+ return FUNCTION_CAST<TranscendentalFunction>(buffer);
+}
+
+
static void MemCopyWrapper(void* dest, const void* src, size_t size) {
memcpy(dest, src, size);
}
=======================================
--- /branches/bleeding_edge/src/ia32/lithium-ia32.cc Fri Mar 2 07:00:52
2012
+++ /branches/bleeding_edge/src/ia32/lithium-ia32.cc Mon Mar 5 00:17:16
2012
@@ -1195,7 +1195,7 @@
LUnaryMathOperation* result = new(zone()) LUnaryMathOperation(context,
input);
return DefineSameAsFirst(result);
- } else if (op == kMathSin || op == kMathCos) {
+ } else if (op == kMathSin || op == kMathCos || op == kMathTan) {
LOperand* context = UseFixed(instr->context(), esi);
LOperand* input = UseFixedDouble(instr->value(), xmm1);
LUnaryMathOperation* result = new(zone()) LUnaryMathOperation(context,
=======================================
--- /branches/bleeding_edge/src/mips/codegen-mips.cc Fri Mar 2 07:00:52
2012
+++ /branches/bleeding_edge/src/mips/codegen-mips.cc Mon Mar 5 00:17:16
2012
@@ -37,6 +37,19 @@
#define __ ACCESS_MASM(masm)
+TranscendentalFunction CreateTranscendentalFunction(
+ TranscendentalCache::Type type) {
+ switch (type) {
+ case TranscendentalCache::SIN: return &sin;
+ case TranscendentalCache::COS: return &cos;
+ case TranscendentalCache::TAN: return &tan;
+ case TranscendentalCache::LOG: return &log;
+ default: UNIMPLEMENTED();
+ }
+ return NULL;
+}
+
+
//
-------------------------------------------------------------------------
// Platform-specific RuntimeCallHelper functions.
=======================================
--- /branches/bleeding_edge/src/mips/lithium-mips.cc Fri Mar 2 07:00:52
2012
+++ /branches/bleeding_edge/src/mips/lithium-mips.cc Mon Mar 5 00:17:16
2012
@@ -1169,7 +1169,7 @@
LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation*
instr) {
BuiltinFunctionId op = instr->op();
- if (op == kMathLog || op == kMathSin || op == kMathCos) {
+ if (op == kMathLog || op == kMathSin || op == kMathCos || op ==
kMathTan) {
LOperand* input = UseFixedDouble(instr->value(), f4);
LUnaryMathOperation* result = new(zone()) LUnaryMathOperation(input,
NULL);
return MarkAsCall(DefineFixedDouble(result, f4), instr);
=======================================
--- /branches/bleeding_edge/src/platform-nullos.cc Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/platform-nullos.cc Mon Mar 5 00:17:16 2012
@@ -53,6 +53,30 @@
UNIMPLEMENTED();
return 0;
}
+
+
+double fast_sin(double x) {
+ UNIMPLEMENTED();
+ return 0;
+}
+
+
+double fast_cos(double x) {
+ UNIMPLEMENTED();
+ return 0;
+}
+
+
+double fast_tan(double x) {
+ UNIMPLEMENTED();
+ return 0;
+}
+
+
+double fast_log(double x) {
+ UNIMPLEMENTED();
+ return 0;
+}
// Initialize OS class early in the V8 startup.
=======================================
--- /branches/bleeding_edge/src/platform-posix.cc Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/platform-posix.cc Mon Mar 5 00:17:16 2012
@@ -53,6 +53,7 @@
#include "v8.h"
+#include "codegen.h"
#include "platform.h"
namespace v8 {
@@ -124,6 +125,29 @@
double modulo(double x, double y) {
return fmod(x, y);
}
+
+
+static Mutex* transcendental_function_mutex = OS::CreateMutex();
+
+#define TRANSCENDENTAL_FUNCTION(name, type) \
+static TranscendentalFunction fast_##name##_function = NULL; \
+double fast_##name(double x) { \
+ if (fast_##name##_function == NULL) { \
+ ScopedLock lock(transcendental_function_mutex); \
+ TranscendentalFunction temp = \
+ CreateTranscendentalFunction(type); \
+ MemoryBarrier(); \
+ fast_##name##_function = temp; \
+ } \
+ return (*fast_##name##_function)(x); \
+}
+
+TRANSCENDENTAL_FUNCTION(sin, TranscendentalCache::SIN)
+TRANSCENDENTAL_FUNCTION(cos, TranscendentalCache::COS)
+TRANSCENDENTAL_FUNCTION(tan, TranscendentalCache::TAN)
+TRANSCENDENTAL_FUNCTION(log, TranscendentalCache::LOG)
+
+#undef TRANSCENDENTAL_FUNCTION
double OS::nan_value() {
=======================================
--- /branches/bleeding_edge/src/platform-win32.cc Sun Mar 4 23:55:27 2012
+++ /branches/bleeding_edge/src/platform-win32.cc Mon Mar 5 00:17:16 2012
@@ -32,6 +32,7 @@
#include "v8.h"
+#include "codegen.h"
#include "platform.h"
#include "vm-state-inl.h"
@@ -206,6 +207,30 @@
#endif // _WIN64
+
+static Mutex* transcendental_function_mutex = OS::CreateMutex();
+
+#define TRANSCENDENTAL_FUNCTION(name, type) \
+static TranscendentalFunction fast_##name##_function = NULL; \
+double fast_##name(double x) { \
+ if (fast_##name##_function == NULL) { \
+ ScopedLock lock(transcendental_function_mutex); \
+ TranscendentalFunction temp = \
+ CreateTranscendentalFunction(type); \
+ MemoryBarrier(); \
+ fast_##name##_function = temp; \
+ } \
+ return (*fast_##name##_function)(x); \
+}
+
+TRANSCENDENTAL_FUNCTION(sin, TranscendentalCache::SIN)
+TRANSCENDENTAL_FUNCTION(cos, TranscendentalCache::COS)
+TRANSCENDENTAL_FUNCTION(tan, TranscendentalCache::TAN)
+TRANSCENDENTAL_FUNCTION(log, TranscendentalCache::LOG)
+
+#undef TRANSCENDENTAL_FUNCTION
+
+
//
----------------------------------------------------------------------------
// The Time class represents time on win32. A timestamp is represented as
// a 64-bit integer in 100 nanoseconds since January 1, 1601 (UTC).
JavaScript
=======================================
--- /branches/bleeding_edge/src/platform.h Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/platform.h Mon Mar 5 00:17:16 2012
@@ -96,6 +96,12 @@
double ceiling(double x);
double modulo(double x, double y);
+// Custom implementation of sin, cos, tan and log.
+double fast_sin(double input);
+double fast_cos(double input);
+double fast_tan(double input);
+double fast_log(double input);
+
// Forward declarations.
class Socket;
=======================================
--- /branches/bleeding_edge/src/x64/code-stubs-x64.cc Fri Mar 2 07:00:52
2012
+++ /branches/bleeding_edge/src/x64/code-stubs-x64.cc Mon Mar 5 00:17:16
2012
@@ -1628,7 +1628,7 @@
__ movsd(FieldOperand(rax, HeapNumber::kValueOffset), xmm1);
__ fld_d(FieldOperand(rax, HeapNumber::kValueOffset));
}
- GenerateOperation(masm);
+ GenerateOperation(masm, type_);
__ movq(Operand(rcx, 0), rbx);
__ movq(Operand(rcx, 2 * kIntSize), rax);
__ fstp_d(FieldOperand(rax, HeapNumber::kValueOffset));
@@ -1643,7 +1643,7 @@
__ subq(rsp, Immediate(kDoubleSize));
__ movsd(Operand(rsp, 0), xmm1);
__ fld_d(Operand(rsp, 0));
- GenerateOperation(masm);
+ GenerateOperation(masm, type_);
__ fstp_d(Operand(rsp, 0));
__ movsd(xmm1, Operand(rsp, 0));
__ addq(rsp, Immediate(kDoubleSize));
@@ -1695,16 +1695,17 @@
}
-void TranscendentalCacheStub::GenerateOperation(MacroAssembler* masm) {
+void TranscendentalCacheStub::GenerateOperation(
+ MacroAssembler* masm, TranscendentalCache::Type type) {
// Registers:
// rax: Newly allocated HeapNumber, which must be preserved.
// rbx: Bits of input double. Must be preserved.
// rcx: Pointer to cache entry. Must be preserved.
// st(0): Input double
Label done;
- if (type_ == TranscendentalCache::SIN ||
- type_ == TranscendentalCache::COS ||
- type_ == TranscendentalCache::TAN) {
+ if (type == TranscendentalCache::SIN ||
+ type == TranscendentalCache::COS ||
+ type == TranscendentalCache::TAN) {
// Both fsin and fcos require arguments in the range +/-2^63 and
// return NaN for infinities and NaN. They can share all code except
// the actual fsin/fcos operation.
@@ -1725,8 +1726,12 @@
__ j(not_equal, &non_nan_result, Label::kNear);
// Input is +/-Infinity or NaN. Result is NaN.
__ fstp(0);
- __ LoadRoot(kScratchRegister, Heap::kNanValueRootIndex);
- __ fld_d(FieldOperand(kScratchRegister, HeapNumber::kValueOffset));
+ // NaN is represented by 0x7ff8000000000000.
+ __ subq(rsp, Immediate(kPointerSize));
+ __ movl(Operand(rsp, 4), Immediate(0x7ff80000));
+ __ movl(Operand(rsp, 0), Immediate(0x00000000));
+ __ fld_d(Operand(rsp, 0));
+ __ addq(rsp, Immediate(kPointerSize));
__ jmp(&done);
__ bind(&non_nan_result);
@@ -1767,7 +1772,7 @@
// FPU Stack: input % 2*pi
__ movq(rax, rdi); // Restore rax, pointer to the new HeapNumber.
__ bind(&in_range);
- switch (type_) {
+ switch (type) {
case TranscendentalCache::SIN:
__ fsin();
break;
@@ -1785,7 +1790,7 @@
}
__ bind(&done);
} else {
- ASSERT(type_ == TranscendentalCache::LOG);
+ ASSERT(type == TranscendentalCache::LOG);
__ fldln2();
__ fxch();
__ fyl2x();
=======================================
--- /branches/bleeding_edge/src/x64/code-stubs-x64.h Fri Mar 2 07:00:52
2012
+++ /branches/bleeding_edge/src/x64/code-stubs-x64.h Mon Mar 5 00:17:16
2012
@@ -48,6 +48,8 @@
ArgumentType argument_type)
: type_(type), argument_type_(argument_type) {}
void Generate(MacroAssembler* masm);
+ static void GenerateOperation(MacroAssembler* masm,
+ TranscendentalCache::Type type);
private:
TranscendentalCache::Type type_;
ArgumentType argument_type_;
@@ -55,7 +57,6 @@
Major MajorKey() { return TranscendentalCache; }
int MinorKey() { return type_ | argument_type_; }
Runtime::FunctionId RuntimeFunction();
- void GenerateOperation(MacroAssembler* masm);
};
=======================================
--- /branches/bleeding_edge/src/x64/codegen-x64.cc Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/x64/codegen-x64.cc Mon Mar 5 00:17:16 2012
@@ -54,6 +54,52 @@
#define __ masm.
+
+TranscendentalFunction CreateTranscendentalFunction(
+ TranscendentalCache::Type type) {
+ size_t actual_size;
+ // Allocate buffer in executable space.
+ byte* buffer = static_cast<byte*>(OS::Allocate(1 * KB,
+ &actual_size,
+ true));
+ if (buffer == NULL) {
+ // Fallback to library function if function cannot be created.
+ switch (type) {
+ case TranscendentalCache::SIN: return &sin;
+ case TranscendentalCache::COS: return &cos;
+ case TranscendentalCache::TAN: return &tan;
+ case TranscendentalCache::LOG: return &log;
+ default: UNIMPLEMENTED();
+ }
+ }
+
+ MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size));
+ // xmm0: raw double input.
+ // Move double input into registers.
+ __ push(rbx);
+ __ push(rdi);
+ __ movq(rbx, xmm0);
+ __ push(rbx);
+ __ fld_d(Operand(rsp, 0));
+ TranscendentalCacheStub::GenerateOperation(&masm, type);
+ // The return value is expected to be in xmm0.
+ __ fstp_d(Operand(rsp, 0));
+ __ pop(rbx);
+ __ movq(xmm0, rbx);
+ __ pop(rdi);
+ __ pop(rbx);
+ __ Ret();
+
+ CodeDesc desc;
+ masm.GetCode(&desc);
+ ASSERT(desc.reloc_size == 0);
+
+ CPU::FlushICache(buffer, actual_size);
+ OS::ProtectCode(buffer, actual_size);
+ return FUNCTION_CAST<TranscendentalFunction>(buffer);
+}
+
+
#ifdef _WIN64
typedef double (*ModuloFunction)(double, double);
// Define custom fmod implementation.
=======================================
--- /branches/bleeding_edge/src/x64/lithium-x64.cc Fri Mar 2 07:00:52 2012
+++ /branches/bleeding_edge/src/x64/lithium-x64.cc Mon Mar 5 00:17:16 2012
@@ -1163,7 +1163,7 @@
LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation*
instr) {
BuiltinFunctionId op = instr->op();
- if (op == kMathLog || op == kMathSin || op == kMathCos) {
+ if (op == kMathLog || op == kMathSin || op == kMathCos || op ==
kMathTan) {
LOperand* input = UseFixedDouble(instr->value(), xmm1);
LUnaryMathOperation* result = new(zone()) LUnaryMathOperation(input);
return MarkAsCall(DefineFixedDouble(result, xmm1), instr);
--
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