cmd/internal/obj/loong64: optimize duplicate optab entries

Change-Id: I28b79d178a2ed3d304f0e61613439813c4dcf79e
Reviewed-on: https://go-review.googlesource.com/c/go/+/721600
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Mark Freeman <markfreeman@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>

diff --git a/src/cmd/internal/obj/loong64/asm.go b/src/cmd/internal/obj/loong64/asm.go
index a39a66831608a7a8511824f04cd2eb3bc7fbed3c..857ef31ca3ac1af2e49cef8b4064e19dcd2ec969 100644 (file)
--- a/src/cmd/internal/obj/loong64/asm.go
+++ b/src/cmd/internal/obj/loong64/asm.go
@@ -65,26 +65,19 @@ var optab = []Optab{
        {AMOVWU, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 12, 4, 0, 0},
 
        {ASUB, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
-       {ASUBV, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {AADD, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {AADDV, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {AAND, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {ASUB, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
-       {ASUBV, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {AADD, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {AADDV, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {AAND, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {ANEGW, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
-       {ANEGV, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {AMASKEQZ, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {ASLL, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {ASLL, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {ASLLV, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {ASLLV, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
-       {AMUL, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
-       {AMUL, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
-       {AMULV, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
-       {AMULV, C_REG, C_REG, C_NONE, C_REG, C_NONE, 2, 4, 0, 0},
        {AADDF, C_FREG, C_NONE, C_NONE, C_FREG, C_NONE, 2, 4, 0, 0},
        {AADDF, C_FREG, C_FREG, C_NONE, C_FREG, C_NONE, 2, 4, 0, 0},
        {ACMPEQF, C_FREG, C_FREG, C_NONE, C_FCCREG, C_NONE, 2, 4, 0, 0},
@@ -1503,26 +1496,6 @@ func buildop(ctxt *obj.Link) {
                        opset(ALL, r0)
                        opset(ALLV, r0)
 
-               case AMUL:
-                       opset(AMULU, r0)
-                       opset(AMULH, r0)
-                       opset(AMULHU, r0)
-                       opset(AREM, r0)
-                       opset(AREMU, r0)
-                       opset(ADIV, r0)
-                       opset(ADIVU, r0)
-                       opset(AMULWVW, r0)
-                       opset(AMULWVWU, r0)
-
-               case AMULV:
-                       opset(AMULVU, r0)
-                       opset(AMULHV, r0)
-                       opset(AMULHVU, r0)
-                       opset(AREMV, r0)
-                       opset(AREMVU, r0)
-                       opset(ADIVV, r0)
-                       opset(ADIVVU, r0)
-
                case ASLL:
                        opset(ASRL, r0)
                        opset(ASRA, r0)
@@ -1541,9 +1514,26 @@ func buildop(ctxt *obj.Link) {
                case ASUB:
                        opset(ASUBU, r0)
                        opset(ANOR, r0)
-
-               case ASUBV:
+                       opset(ASUBV, r0)
                        opset(ASUBVU, r0)
+                       opset(AMUL, r0)
+                       opset(AMULU, r0)
+                       opset(AMULH, r0)
+                       opset(AMULHU, r0)
+                       opset(AREM, r0)
+                       opset(AREMU, r0)
+                       opset(ADIV, r0)
+                       opset(ADIVU, r0)
+                       opset(AMULV, r0)
+                       opset(AMULVU, r0)
+                       opset(AMULHV, r0)
+                       opset(AMULHVU, r0)
+                       opset(AREMV, r0)
+                       opset(AREMVU, r0)
+                       opset(ADIVV, r0)
+                       opset(ADIVVU, r0)
+                       opset(AMULWVW, r0)
+                       opset(AMULWVWU, r0)
 
                case ASYSCALL:
                        opset(ADBAR, r0)
@@ -1563,6 +1553,9 @@ func buildop(ctxt *obj.Link) {
                        opset(AALSLW, r0)
                        opset(AALSLWU, r0)
 
+               case ANEGW:
+                       opset(ANEGV, r0)
+
                case AMOVW,
                        AMOVD,
                        AMOVF,
@@ -1575,8 +1568,6 @@ func buildop(ctxt *obj.Link) {
                        AXVMOVQ,
                        AVSHUFB,
                        AXVSHUFB,
-                       ANEGW,
-                       ANEGV,
                        AWORD,
                        APRELD,
                        APRELDX,