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x64Emitter: don't check flags for most BMI2 ops 

With the exception of BZHI, BMI2 instructions don't affect flags, so
don't check if they're locked.
This commit is contained in:
Tillmann Karras 2015-08-14 06:02:22 +02:00
parent 0674e344c4
commit 022286fb90
1 changed files with 2 additions and 2 deletions
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4
Source/Core/Common/x64Emitter.cpp
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@ -1446,7 +1446,6 @@ void XEmitter::WriteFMA4Op(u8 op, X64Reg dest, X64Reg regOp1, X64Reg regOp2, con
void XEmitter::WriteBMIOp(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, const OpArg& arg, int extrabytes)
{
CheckFlags();
if (arg.IsImm())
PanicAlert("BMI1/2 instructions don't support immediate operands.");
if (size != 32 && size != 64)
@ -1457,6 +1456,7 @@ void XEmitter::WriteBMIOp(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg r
void XEmitter::WriteBMI1Op(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, const OpArg& arg, int extrabytes)
{
CheckFlags();
if (!cpu_info.bBMI1)
PanicAlert("Trying to use BMI1 on a system that doesn't support it. Bad programmer.");
WriteBMIOp(size, opPrefix, op, regOp1, regOp2, arg, extrabytes);
@ -1989,7 +1989,7 @@ void XEmitter::RORX(int bits, X64Reg regOp, const OpArg& arg, u8 rotate) {W
void XEmitter::PEXT(int bits, X64Reg regOp1, X64Reg regOp2, const OpArg& arg) {WriteBMI2Op(bits, 0xF3, 0x38F5, regOp1, regOp2, arg);}
void XEmitter::PDEP(int bits, X64Reg regOp1, X64Reg regOp2, const OpArg& arg) {WriteBMI2Op(bits, 0xF2, 0x38F5, regOp1, regOp2, arg);}
void XEmitter::MULX(int bits, X64Reg regOp1, X64Reg regOp2, const OpArg& arg) {WriteBMI2Op(bits, 0xF2, 0x38F6, regOp2, regOp1, arg);}
void XEmitter::BZHI(int bits, X64Reg regOp1, const OpArg& arg, X64Reg regOp2) {WriteBMI2Op(bits, 0x00, 0x38F5, regOp1, regOp2, arg);}
void XEmitter::BZHI(int bits, X64Reg regOp1, const OpArg& arg, X64Reg regOp2) {CheckFlags(); WriteBMI2Op(bits, 0x00, 0x38F5, regOp1, regOp2, arg);}
void XEmitter::BLSR(int bits, X64Reg regOp, const OpArg& arg) {WriteBMI1Op(bits, 0x00, 0x38F3, (X64Reg)0x1, regOp, arg);}
void XEmitter::BLSMSK(int bits, X64Reg regOp, const OpArg& arg) {WriteBMI1Op(bits, 0x00, 0x38F3, (X64Reg)0x2, regOp, arg);}
void XEmitter::BLSI(int bits, X64Reg regOp, const OpArg& arg) {WriteBMI1Op(bits, 0x00, 0x38F3, (X64Reg)0x3, regOp, arg);}