Zero ymm2 with vpxor xmm2 using AVX's implicit zeroing of upper regis…

…ter parts https://stackoverflow.com/questions/44578967/what-is-the-most-efficient-way-to-clear-a-single-or-a-few-zmm-registers-on-knigh#answer-44841054
HBTGmbH · Aug 15, 2022 · d1c9b03 · d1c9b03
1 parent 071ea3c
commit d1c9b03
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/sse_amd64.s b/sse_amd64.s
@@ -48,7 +48,7 @@ TEXT ·onlySpaces32(SB),NOSPLIT, $0
     VMOVDQU (DI), Y0
     VMOVDQA Y0, Y1
     VPCMPGTB ·spc<>(SB), Y0, Y0
-    VPXOR Y2, Y2, Y2
+    VPXOR X2, X2, X2
     VPCMPGTB Y1, Y2, Y2
     VPOR Y2, Y0, Y0
     VPMOVMSKB Y0, AX