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Arm64Emitter: Prefer BFM/UBFM to EncodeBitfieldMOVInst

This commit is contained in:
MerryMage 2021-01-31 11:48:39 +00:00
parent be6aec9932
commit 75d92ad628
1 changed files with 3 additions and 3 deletions
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6
Source/Core/Common/Arm64Emitter.cpp
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@ -1661,7 +1661,7 @@ void ARM64XEmitter::BFI(ARM64Reg Rd, ARM64Reg Rn, u32 lsb, u32 width)
ASSERT_MSG(DYNA_REC, (lsb + width) <= size,
"%s passed lsb %d and width %d which is greater than the register size!", __func__,
lsb, width);
EncodeBitfieldMOVInst(1, Rd, Rn, (size - lsb) % size, width - 1);
BFM(Rd, Rn, (size - lsb) % size, width - 1);
}
void ARM64XEmitter::BFXIL(ARM64Reg Rd, ARM64Reg Rn, u32 lsb, u32 width)
{
@ -1669,7 +1669,7 @@ void ARM64XEmitter::BFXIL(ARM64Reg Rd, ARM64Reg Rn, u32 lsb, u32 width)
ASSERT_MSG(DYNA_REC, lsb < size && width >= 1 && width <= size - lsb,
"%s passed lsb %d and width %d which is greater than the register size!", __func__,
lsb, width);
EncodeBitfieldMOVInst(1, Rd, Rn, lsb, lsb + width - 1);
BFM(Rd, Rn, lsb, lsb + width - 1);
}
void ARM64XEmitter::UBFIZ(ARM64Reg Rd, ARM64Reg Rn, u32 lsb, u32 width)
{
@ -1677,7 +1677,7 @@ void ARM64XEmitter::UBFIZ(ARM64Reg Rd, ARM64Reg Rn, u32 lsb, u32 width)
ASSERT_MSG(DYNA_REC, (lsb + width) <= size,
"%s passed lsb %d and width %d which is greater than the register size!", __func__,
lsb, width);
EncodeBitfieldMOVInst(2, Rd, Rn, (size - lsb) % size, width - 1);
UBFM(Rd, Rn, (size - lsb) % size, width - 1);
}
void ARM64XEmitter::EXTR(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, u32 shift)
{