cmd/internal/obj/arm64: fix the size of STP series instructions in optab

When the class of p.To is C_NAUTO4K, STP series instructions will be translated
into add/sub + stp instructions, the total size is 8. Currently this size
value in optab is 12, this CL fixes it.

Change-Id: Ife1b9e9f8a28edca9b59f62b45a80d83f38993b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/314210
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: eric fang <eric.fang@arm.com>
Run-TryBot: eric fang <eric.fang@arm.com>
TryBot-Result: Go Bot <gobot@golang.org>

diff --git a/src/cmd/internal/obj/arm64/asm7.go b/src/cmd/internal/obj/arm64/asm7.go
index f2188c3403ca3489f3e29349036773a18faff207..575436d764a9948e8e879133b7c6bf7914e7c6fa 100644 (file)
--- a/src/cmd/internal/obj/arm64/asm7.go
+++ b/src/cmd/internal/obj/arm64/asm7.go
@@ -720,7 +720,7 @@ var optab = []Optab{
        {AFSTPQ, C_PAIR, C_NONE, C_NONE, C_PQAUTO_16, 67, 4, REGSP, 0, C_XPRE},
        {AFSTPQ, C_PAIR, C_NONE, C_NONE, C_PQAUTO_16, 67, 4, REGSP, 0, C_XPOST},
        {AFSTPQ, C_PAIR, C_NONE, C_NONE, C_UAUTO4K, 76, 8, REGSP, 0, 0},
-       {AFSTPQ, C_PAIR, C_NONE, C_NONE, C_NAUTO4K, 76, 12, REGSP, 0, 0},
+       {AFSTPQ, C_PAIR, C_NONE, C_NONE, C_NAUTO4K, 76, 8, REGSP, 0, 0},
        {AFSTPQ, C_PAIR, C_NONE, C_NONE, C_LAUTO, 77, 12, REGSP, LTO, 0},
        {AFSTPQ, C_PAIR, C_NONE, C_NONE, C_NQOREG_16, 67, 4, 0, 0, 0},
        {AFSTPQ, C_PAIR, C_NONE, C_NONE, C_NQOREG_16, 67, 4, 0, 0, C_XPRE},
@@ -760,7 +760,7 @@ var optab = []Optab{
        {ASTP, C_PAIR, C_NONE, C_NONE, C_PPAUTO, 67, 4, REGSP, 0, C_XPRE},
        {ASTP, C_PAIR, C_NONE, C_NONE, C_PPAUTO, 67, 4, REGSP, 0, C_XPOST},
        {ASTP, C_PAIR, C_NONE, C_NONE, C_UAUTO4K, 76, 8, REGSP, 0, 0},
-       {ASTP, C_PAIR, C_NONE, C_NONE, C_NAUTO4K, 76, 12, REGSP, 0, 0},
+       {ASTP, C_PAIR, C_NONE, C_NONE, C_NAUTO4K, 76, 8, REGSP, 0, 0},
        {ASTP, C_PAIR, C_NONE, C_NONE, C_LAUTO, 77, 12, REGSP, LTO, 0},
        {ASTP, C_PAIR, C_NONE, C_NONE, C_NPOREG, 67, 4, 0, 0, 0},
        {ASTP, C_PAIR, C_NONE, C_NONE, C_NPOREG, 67, 4, 0, 0, C_XPRE},
@@ -801,7 +801,7 @@ var optab = []Optab{
        {ASTPW, C_PAIR, C_NONE, C_NONE, C_PSAUTO_4, 67, 4, REGSP, 0, C_XPRE},
        {ASTPW, C_PAIR, C_NONE, C_NONE, C_PSAUTO_4, 67, 4, REGSP, 0, C_XPOST},
        {ASTPW, C_PAIR, C_NONE, C_NONE, C_UAUTO4K, 76, 8, REGSP, 0, 0},
-       {ASTPW, C_PAIR, C_NONE, C_NONE, C_NAUTO4K, 76, 12, REGSP, 0, 0},
+       {ASTPW, C_PAIR, C_NONE, C_NONE, C_NAUTO4K, 76, 8, REGSP, 0, 0},
        {ASTPW, C_PAIR, C_NONE, C_NONE, C_LAUTO, 77, 12, REGSP, LTO, 0},
        {ASTPW, C_PAIR, C_NONE, C_NONE, C_NSOREG_4, 67, 4, 0, 0, 0},
        {ASTPW, C_PAIR, C_NONE, C_NONE, C_NSOREG_4, 67, 4, 0, 0, C_XPRE},