cmd/internal/obj/loong64: add {,X}VSHUF.{B/H/W/V} instructions support

Go asm syntax:
         VSHUFB             V1, V2, V3, V4
        XVSHUFB             X1, X2, X3, X4
         VSHUF{H/W/V}       V1, V2, V3
        XVSHUF{H/W/V}       X1, X2, X3

Equivalent platform assembler syntax:
         vshuf.b            v4, v3, v2, v1
        xvshuf.b            x4, x3, x2, x1
         vshuf.{h/w/d}      v3, v2, v1
        xvshuf.{h/w/d}      x3, x2, x1

Change-Id: I8983467495f587cf46083fd81cb024400c7dc2a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/716804
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>

diff --git a/src/cmd/asm/internal/asm/testdata/loong64enc1.s b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
index b440a6456fcb3bbfb04582abe46eac7a63d632cd..2eb3156e4543f0dd77bd9dfe1dbf9d0347ac520d 100644 (file)
--- a/src/cmd/asm/internal/asm/testdata/loong64enc1.s
+++ b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
@@ -1023,6 +1023,16 @@ lable2:
        XVSHUF4IV       $8, X1, X2      // 22209c77
        XVSHUF4IV       $15, X1, X2     // 223c9c77
 
+       // [X]VSHUF.{B/H/W/V} instructions
+       VSHUFH          V1, V2, V3      // 43847a71
+       VSHUFW          V1, V2, V3      // 43047b71
+       VSHUFV          V1, V2, V3      // 43847b71
+       XVSHUFH         X1, X2, X3      // 43847a75
+       XVSHUFW         X1, X2, X3      // 43047b75
+       XVSHUFV         X1, X2, X3      // 43847b75
+       VSHUFB          V1, V2, V3, V4  // 6488500d
+       XVSHUFB         X1, X2, X3, X4  // 6488600d
+
        // VPERMIW, XVPERMI{W,V,Q} instructions
        VPERMIW         $0x1B, V1, V2   // VPERMIW      $27, V1, V2 // 226ce473
        XVPERMIW        $0x2B, X1, X2   // XVPERMIW     $43, X1, X2 // 22ace477

diff --git a/src/cmd/internal/obj/loong64/a.out.go b/src/cmd/internal/obj/loong64/a.out.go
index 48e60b64bf37a3563408e363f3b6ede4e7dd9dfd..6bf2068334474db059ec007a47e75c18a2b31c4b 100644 (file)
--- a/src/cmd/internal/obj/loong64/a.out.go
+++ b/src/cmd/internal/obj/loong64/a.out.go
@@ -1115,6 +1115,15 @@ const (
        AXVSHUF4IW
        AXVSHUF4IV
 
+       AVSHUFB
+       AVSHUFH
+       AVSHUFW
+       AVSHUFV
+       AXVSHUFB
+       AXVSHUFH
+       AXVSHUFW
+       AXVSHUFV
+
        AVPERMIW
        AXVPERMIW
        AXVPERMIV

diff --git a/src/cmd/internal/obj/loong64/anames.go b/src/cmd/internal/obj/loong64/anames.go
index 95806741e6ee722e74c627dce4c5a7f1deaa1b3a..0e00cb887f678fc4460269616a62a6fbbed49d2a 100644 (file)
--- a/src/cmd/internal/obj/loong64/anames.go
+++ b/src/cmd/internal/obj/loong64/anames.go
@@ -586,6 +586,14 @@ var Anames = []string{
        "XVSHUF4IH",
        "XVSHUF4IW",
        "XVSHUF4IV",
+       "VSHUFB",
+       "VSHUFH",
+       "VSHUFW",
+       "VSHUFV",
+       "XVSHUFB",
+       "XVSHUFH",
+       "XVSHUFW",
+       "XVSHUFV",
        "VPERMIW",
        "XVPERMIW",
        "XVPERMIV",

diff --git a/src/cmd/internal/obj/loong64/asm.go b/src/cmd/internal/obj/loong64/asm.go
index 8bf8a1d99011e16d68e07d7c27d5d779a7c89882..e0aca15005a94927c22d9615d8ee5795690110ef 100644 (file)
--- a/src/cmd/internal/obj/loong64/asm.go
+++ b/src/cmd/internal/obj/loong64/asm.go
@@ -155,6 +155,8 @@ var optab = []Optab{
 
        {AFMADDF, C_FREG, C_FREG, C_NONE, C_FREG, C_NONE, 37, 4, 0, 0},
        {AFMADDF, C_FREG, C_FREG, C_FREG, C_FREG, C_NONE, 37, 4, 0, 0},
+       {AVSHUFB, C_VREG, C_VREG, C_VREG, C_VREG, C_NONE, 37, 4, 0, 0},
+       {AXVSHUFB, C_XREG, C_XREG, C_XREG, C_XREG, C_NONE, 37, 4, 0, 0},
 
        {AFSEL, C_FCCREG, C_FREG, C_FREG, C_FREG, C_NONE, 33, 4, 0, 0},
        {AFSEL, C_FCCREG, C_FREG, C_NONE, C_FREG, C_NONE, 33, 4, 0, 0},
@@ -1561,6 +1563,8 @@ func buildop(ctxt *obj.Link) {
                        AMOVWU,
                        AVMOVQ,
                        AXVMOVQ,
+                       AVSHUFB,
+                       AXVSHUFB,
                        ANEGW,
                        ANEGV,
                        AWORD,
@@ -1698,6 +1702,9 @@ func buildop(ctxt *obj.Link) {
                        opset(AVMULD, r0)
                        opset(AVDIVF, r0)
                        opset(AVDIVD, r0)
+                       opset(AVSHUFH, r0)
+                       opset(AVSHUFW, r0)
+                       opset(AVSHUFV, r0)
 
                case AXVSEQB:
                        opset(AXVSEQH, r0)
@@ -1771,6 +1778,9 @@ func buildop(ctxt *obj.Link) {
                        opset(AXVMULD, r0)
                        opset(AXVDIVF, r0)
                        opset(AXVDIVD, r0)
+                       opset(AXVSHUFH, r0)
+                       opset(AXVSHUFW, r0)
+                       opset(AXVSHUFV, r0)
 
                case AVANDB:
                        opset(AVORB, r0)
@@ -3107,6 +3117,10 @@ func (c *ctxt0) oprrrr(a obj.As) uint32 {
                return 0x8d << 20 // fnmsub.s
        case AFNMSUBD:
                return 0x8e << 20 // fnmsub.d
+       case AVSHUFB:
+               return 0x0D5 << 20 // vshuf.b
+       case AXVSHUFB:
+               return 0x0D6 << 20 // xvshuf.b
        }
 
        c.ctxt.Diag("bad rrrr opcode %v", a)
@@ -3775,6 +3789,18 @@ func (c *ctxt0) oprrr(a obj.As) uint32 {
                return 0xea22 << 15 // xvbitrev.w
        case AXVBITREVV:
                return 0xea23 << 15 // xvbitrev.d
+       case AVSHUFH:
+               return 0x0E2F5 << 15 // vshuf.h
+       case AVSHUFW:
+               return 0x0E2F6 << 15 // vshuf.w
+       case AVSHUFV:
+               return 0x0E2F7 << 15 // vshuf.d
+       case AXVSHUFH:
+               return 0x0EAF5 << 15 // xvshuf.h
+       case AXVSHUFW:
+               return 0x0EAF6 << 15 // xvshuf.w
+       case AXVSHUFV:
+               return 0x0EAF7 << 15 // xvshuf.d
        }
 
        if a < 0 {