cmd/asm: fix SIMD register name on arm64

Current V-register range is V32~V63 on arm64. This patch changes it to
V0~V31.

fix #15465.

Change-Id: I90dab42dea46825ec5d7a8321ec4f6550735feb8
Reviewed-on: https://go-review.googlesource.com/22520
Reviewed-by: Aram Hăvărneanu <aram@mgk.ro>
Run-TryBot: Aram Hăvărneanu <aram@mgk.ro>
TryBot-Result: Gobot Gobot <gobot@golang.org>

diff --git a/src/cmd/internal/obj/arm64/list7.go b/src/cmd/internal/obj/arm64/list7.go
index 36f544b53ad6c5c090c61864af2a1dad60a33362..ad9ff0965cb8578de82940eefbd00d05ef4b8a28 100644 (file)
--- a/src/cmd/internal/obj/arm64/list7.go
+++ b/src/cmd/internal/obj/arm64/list7.go
@@ -71,7 +71,7 @@ func Rconv(r int) string {
        case REG_F0 <= r && r <= REG_F31:
                return fmt.Sprintf("F%d", r-REG_F0)
        case REG_V0 <= r && r <= REG_V31:
-               return fmt.Sprintf("V%d", r-REG_F0)
+               return fmt.Sprintf("V%d", r-REG_V0)
        case COND_EQ <= r && r <= COND_NV:
                return strcond[r-COND_EQ]
        case r == REGSP: