cmd/internal/obj/x86: Make VPSHUFD accept negative constant

This partially reverts commit 4e24e1d9996b0b0155c8349e49244d9694c89708.
Since in release 1.7 VPSHUFD support negative constant as an argument,
removing it as part of 4e24e1d9996b0b0155c8349e49244d9694c89708 was wrong.
Add it back.

Change-Id: Id1a3e062fe8fb4cf538edb3f9970f0664f3f545f
Reviewed-on: https://go-review.googlesource.com/27712
Run-TryBot: Ilya Tocar <ilya.tocar@intel.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

diff --git a/src/cmd/internal/obj/x86/asm6.go b/src/cmd/internal/obj/x86/asm6.go
index 5d6a9d8c5ab0afae204a0a245016cf7fb727b70d..e9d84650f24b4e9f62d0605d6dcc33ba75a557ee 100644 (file)
--- a/src/cmd/internal/obj/x86/asm6.go
+++ b/src/cmd/internal/obj/x86/asm6.go
@@ -857,6 +857,8 @@ var yvex_ri3 = []ytab{
 var yvex_xyi3 = []ytab{
        {Yu8, Yxm, Yxr, Zvex_i_rm_r, 2},
        {Yu8, Yym, Yyr, Zvex_i_rm_r, 2},
+       {Yi8, Yxm, Yxr, Zvex_i_rm_r, 2},
+       {Yi8, Yym, Yyr, Zvex_i_rm_r, 2},
 }
 
 var yvex_yyi4 = []ytab{ //TODO don't hide 4 op, some version have xmm version
@@ -1712,7 +1714,7 @@ var optab =
        {AVPBROADCASTB, yvex_vpbroadcast, Pvex, [23]uint8{VEX_128_66_0F38_W0, 0x78, VEX_256_66_0F38_W0, 0x78}},
        {AVPTEST, yvex_xy2, Pvex, [23]uint8{VEX_128_66_0F38_WIG, 0x17, VEX_256_66_0F38_WIG, 0x17}},
        {AVPSHUFB, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F38_WIG, 0x00, VEX_256_66_0F38_WIG, 0x00}},
-       {AVPSHUFD, yvex_xyi3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x70, VEX_256_66_0F_WIG, 0x70}},
+       {AVPSHUFD, yvex_xyi3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x70, VEX_256_66_0F_WIG, 0x70, VEX_128_66_0F_WIG, 0x70, VEX_256_66_0F_WIG, 0x70}},
        {AVPOR, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xeb, VEX_256_66_0F_WIG, 0xeb}},
        {AVPADDQ, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xd4, VEX_256_66_0F_WIG, 0xd4}},
        {AVPADDD, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xfe, VEX_256_66_0F_WIG, 0xfe}},