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Copy pathFTLValueFormat.cpp
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124 lines (105 loc) · 3.65 KB
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/*
* Copyright (C) 2013, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "config.h"
#include "FTLValueFormat.h"
#if ENABLE(FTL_JIT)
#include "AssemblyHelpers.h"
namespace JSC { namespace FTL {
void reboxAccordingToFormat(
ValueFormat format, AssemblyHelpers& jit, GPRReg value, GPRReg scratch1, GPRReg scratch2)
{
switch (format) {
case ValueFormatInt32: {
jit.zeroExtend32ToPtr(value, value);
jit.or64(GPRInfo::tagTypeNumberRegister, value);
break;
}
case ValueFormatInt52: {
jit.rshift64(AssemblyHelpers::TrustedImm32(JSValue::int52ShiftAmount), value);
jit.moveDoubleTo64(FPRInfo::fpRegT0, scratch2);
jit.boxInt52(value, value, scratch1, FPRInfo::fpRegT0);
jit.move64ToDouble(scratch2, FPRInfo::fpRegT0);
break;
}
case ValueFormatStrictInt52: {
jit.moveDoubleTo64(FPRInfo::fpRegT0, scratch2);
jit.boxInt52(value, value, scratch1, FPRInfo::fpRegT0);
jit.move64ToDouble(scratch2, FPRInfo::fpRegT0);
break;
}
case ValueFormatBoolean: {
jit.zeroExtend32ToPtr(value, value);
jit.or32(MacroAssembler::TrustedImm32(ValueFalse), value);
break;
}
case ValueFormatJSValue: {
// Done already!
break;
}
case ValueFormatDouble: {
jit.moveDoubleTo64(FPRInfo::fpRegT0, scratch1);
jit.move64ToDouble(value, FPRInfo::fpRegT0);
jit.purifyNaN(FPRInfo::fpRegT0);
jit.boxDouble(FPRInfo::fpRegT0, value);
jit.move64ToDouble(scratch1, FPRInfo::fpRegT0);
break;
}
default:
RELEASE_ASSERT_NOT_REACHED();
break;
}
}
} } // namespace JSC::FTL
namespace WTF {
using namespace JSC::FTL;
void printInternal(PrintStream& out, ValueFormat format)
{
switch (format) {
case InvalidValueFormat:
out.print("Invalid");
return;
case ValueFormatInt32:
out.print("Int32");
return;
case ValueFormatInt52:
out.print("Int52");
return;
case ValueFormatStrictInt52:
out.print("StrictInt52");
return;
case ValueFormatBoolean:
out.print("Boolean");
return;
case ValueFormatJSValue:
out.print("JSValue");
return;
case ValueFormatDouble:
out.print("Double");
return;
}
RELEASE_ASSERT_NOT_REACHED();
}
} // namespace WTF
#endif // ENABLE(FTL_JIT)