runtime: use DC ZVA instead of its encoding in WORD in arm64 memclr

Change-Id: I900a96b985f4d9378d25b9256c4274610fc2f70e
Reviewed-on: https://go-review.googlesource.com/c/go/+/698417
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

diff --git a/src/runtime/memclr_arm64.s b/src/runtime/memclr_arm64.s
index 3e49f7fcf6a26fb2e211aebd141bd3977a9215cb..3f8acdaeff670f463c81b1b0f54f61919b302c21 100644 (file)
--- a/src/runtime/memclr_arm64.s
+++ b/src/runtime/memclr_arm64.s
@@ -176,7 +176,7 @@ aligned:
 
        PCALIGN $16
 loop_zva:
-       WORD    $0xd50b7420 // DC ZVA, R0
+       DC      ZVA, R0
        ADD     R5, R0, R0
        SUBS    R5, R1, R1
        BHS     loop_zva