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JitArm64: Prefer MOVI with 64-bit elements for zeroing

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The Cortex-X2 and Cortex-X3 (and possibly others) recognize MOVI with
64-bit elements as a zeroing idiom, but not MOVI with other sizes.
This commit is contained in:
JosJuice 2023-08-06 11:52:25 +02:00
parent f2b8baa82c
commit 1ebec40e4d
2 changed files with 2 additions and 2 deletions
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2
Source/Core/Core/PowerPC/JitArm64/JitArm64_FloatingPoint.cpp
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@ -832,7 +832,7 @@ void JitArm64::ConvertSingleToDoublePair(size_t guest_reg, ARM64Reg dest_reg, AR
{
// Set each 32-bit element of scratch_reg to 0x0000'0000 or 0xFFFF'FFFF depending on whether
// the absolute value of the corresponding element in src_reg compares greater than 0
m_float_emit.MOVI(8, EncodeRegToDouble(scratch_reg), 0);
m_float_emit.MOVI(64, EncodeRegToDouble(scratch_reg), 0);
m_float_emit.FACGT(32, EncodeRegToDouble(scratch_reg), EncodeRegToDouble(src_reg),
EncodeRegToDouble(scratch_reg));

2
Source/Core/Core/PowerPC/JitArm64/JitArm64_Paired.cpp
View File

@ -254,7 +254,7 @@ void JitArm64::ps_arith(UGeckoInstruction inst)
// Pick the right NaNs
m_float_emit.MOVI(8, zero_reg, 0);
m_float_emit.MOVI(64, zero_reg, 0);
const auto check_input = [&](ARM64Reg input) {
m_float_emit.FACGE(size, nan_temp_reg_paired, input, zero_reg);