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Dont use VEX encoded instructions for 128 bit ISA

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This commit is contained in:
Kovid Goyal 2024-02-02 06:20:53 +05:30
parent aed0611fb8
commit 9b0ae8d403
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GPG key ID: 06BC317B515ACE7C
1 changed files with 8 additions and 2 deletions
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10
tools/simdstring/generate.go
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@ -406,7 +406,11 @@ func (f *Function) CountBytesToFirstMatchDestructive(vec, ans Register) {
f.instr("UBFX", "$2", ans, "$30", ans)
f.AddTrailingComment(ans, ">>= 2 (divide by 4)")
} else {
f.instr("VPMOVMSKB", vec, ans)
if f.ISA.Bits == 128 {
f.instr("PMOVMSKB", vec, ans)
} else {
f.instr("VPMOVMSKB", vec, ans)
}
f.AddTrailingComment(ans, "= mask of the highest bit in every byte in", vec)
f.CountTrailingZeros(ans, ans)
}
@ -492,6 +496,8 @@ func (f *Function) test_if_zero(a Register) {
f.instr("TESTL", a, a)
case 64:
f.instr("TESTQ", a, a)
case 128:
f.instr("PTEST", a, a)
default:
f.instr("VPTEST", a, a)
}
@ -668,7 +674,7 @@ func (f *Function) CopyRegister(a, ans Register) {
if f.ISA.Goarch == ARM64 {
f.instr("VDUP", a.Name[1:]+".D2", ans.Name+".D2")
} else {
f.instr("VMOVDQA", a, ans)
f.instr(f.aligned_move(), a, ans)
}
} else {
if f.ISA.Goarch == ARM64 {