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8388543: AArch64: VectorAPI: replace sve_dup+mov with fmovd in sve_vmask_fromlong

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Reviewed-by: aph, haosun
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Eric Fang 2026-07-24 09:44:31 +00:00 committed by Hao Sun
parent 62cc4efba2
commit e0f60015f6
1 changed files with 2 additions and 2 deletions
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4
src/hotspot/cpu/aarch64/c2_MacroAssembler_aarch64.cpp
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@ -1506,9 +1506,9 @@ void C2_MacroAssembler::sve_vmask_fromlong(FloatRegister dst, Register src,
// Expected: dst = 0x00 01 01 00 00 01 00 01 01 00 00 00 01 01 00 01
// Put long value from general purpose register into the first lane of vector.
// The higher lanes are set to zero.
// vtmp = 0x0000000000000000 | 0x000000000000658D
sve_dup(vtmp, B, 0);
mov(vtmp, D, 0, src);
fmovd(vtmp, src);
// Transform the value in the first lane which is mask in bit now to the mask in
// byte, which can be done by SVE2's BDEP instruction.