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internal/cpu: Prefer XOR CX, CX over MOV 0, CX in xgetbv

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This makes the code consistent with the gccgo implementation.
This commit is contained in:
Andrew Gaul 2021-07-13 20:00:01 +09:00
parent a98589711d
commit 685cb9af0d
1 changed files with 1 additions and 1 deletions
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src/internal/cpu/cpu_x86.s
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@ -20,7 +20,7 @@ TEXT ·cpuid(SB), NOSPLIT, $0-24
// func xgetbv() (eax, edx uint32)
TEXT ·xgetbv(SB),NOSPLIT,$0-8
MOVL $0, CX
XORL CX, CX
XGETBV
MOVL AX, eax+0(FP)
MOVL DX, edx+4(FP)