cmd/internal/obj: fix PSRLW opcode

The reg-reg version compiled to PSRAW, not PSRLW (arithmetic
instead of logical shift right).

Fixes #13010.

Change-Id: I69a47bd83c8bbe66c7f8d82442ab45e9bf3b94fb
Reviewed-on: https://go-review.googlesource.com/16168
Reviewed-by: Ian Lance Taylor <iant@golang.org>

diff --git a/src/cmd/internal/obj/x86/asm6.go b/src/cmd/internal/obj/x86/asm6.go
index 8159e5934f316806b5db7dfafac1cd201acad0e2..29d33f92afe5cd85176d7bc36502036fcb4af50e 100644 (file)
--- a/src/cmd/internal/obj/x86/asm6.go
+++ b/src/cmd/internal/obj/x86/asm6.go
@@ -1196,7 +1196,7 @@ var optab =
        {APSRLO, ypsdq, Pq, [23]uint8{0x73, 03}},
        {APSRLL, yps, Py3, [23]uint8{0xd2, 0x72, 02, Pe, 0xd2, Pe, 0x72, 02}},
        {APSRLQ, yps, Py3, [23]uint8{0xd3, 0x73, 02, Pe, 0xd3, Pe, 0x73, 02}},
-       {APSRLW, yps, Py3, [23]uint8{0xd1, 0x71, 02, Pe, 0xe1, Pe, 0x71, 02}},
+       {APSRLW, yps, Py3, [23]uint8{0xd1, 0x71, 02, Pe, 0xd1, Pe, 0x71, 02}},
        {APSUBB, yxm, Pe, [23]uint8{0xf8}},
        {APSUBL, yxm, Pe, [23]uint8{0xfa}},
        {APSUBQ, yxm, Pe, [23]uint8{0xfb}},