From: Guoqi Chen <chenguoqi@loongson.cn>
Date: Thu, 26 Sep 2024 11:11:50 +0000 (+0800)
Subject: cmd/internal/obj/loong64: add {V,XV}SEQ.{B,H,W,D} instructions support
X-Git-Tag: go1.24rc1~462
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=4ce8c0604ee1c36c221b1a3d767dfa131d5cce8c;p=gostls13.git

cmd/internal/obj/loong64: add {V,XV}SEQ.{B,H,W,D} instructions support

Go asm syntax:
         VSEQ{B,H,W,V}  VJ, VK, VD
        XVSEQ{B,H,W,V}  XJ, XK, XD

Equivalent platform assembler syntax:
         vseq.{b,w,h,d}  vd, vj, vk
        xvseq.{b,w,h,d}  xd, xj, xk

Change-Id: Ia87277b12c817ebc41a46f4c3d09f4b76995ff2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/616076
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Cherry Mui <cherryyz@google.com>
---

diff --git a/src/cmd/asm/internal/asm/testdata/loong64enc1.s b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
index 7638ab1be5..fbfe90a2b0 100644
--- a/src/cmd/asm/internal/asm/testdata/loong64enc1.s
+++ b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
@@ -433,3 +433,13 @@ lable2:
 	XVMOVQ		-2044(R4), X5   // 8510a02c
 	XVMOVQ		y+16(FP), X6    // 0660802c
 	XVMOVQ		x+2030(FP), X7  // 07d89f2c
+
+	// VSEQ{B,H,W,V}, XVSEQ{B,H,W,V} instruction
+	VSEQB		V1, V2, V3      // 43040070
+	VSEQH		V1, V2, V3      // 43840070
+	VSEQW		V1, V2, V3      // 43040170
+	VSEQV		V1, V2, V3      // 43840170
+	XVSEQB		X3, X2, X4      // 440c0074
+	XVSEQH		X3, X2, X4      // 448c0074
+	XVSEQW		X3, X2, X4      // 440c0174
+	XVSEQV		X3, X2, X4      // 448c0174
diff --git a/src/cmd/internal/obj/loong64/a.out.go b/src/cmd/internal/obj/loong64/a.out.go
index e7736a918d..4e4135b017 100644
--- a/src/cmd/internal/obj/loong64/a.out.go
+++ b/src/cmd/internal/obj/loong64/a.out.go
@@ -628,6 +628,16 @@ const (
 	AVMOVQ
 	AXVMOVQ
 
+	// LSX and LASX integer comparison instruction
+	AVSEQB
+	AXVSEQB
+	AVSEQH
+	AXVSEQH
+	AVSEQW
+	AXVSEQW
+	AVSEQV
+	AXVSEQV
+
 	ALAST
 
 	// aliases
diff --git a/src/cmd/internal/obj/loong64/anames.go b/src/cmd/internal/obj/loong64/anames.go
index fc5100d595..a316c75522 100644
--- a/src/cmd/internal/obj/loong64/anames.go
+++ b/src/cmd/internal/obj/loong64/anames.go
@@ -257,5 +257,13 @@ var Anames = []string{
 	"FTINTRNEVD",
 	"VMOVQ",
 	"XVMOVQ",
+	"VSEQB",
+	"XVSEQB",
+	"VSEQH",
+	"XVSEQH",
+	"VSEQW",
+	"XVSEQW",
+	"VSEQV",
+	"XVSEQV",
 	"LAST",
 }
diff --git a/src/cmd/internal/obj/loong64/asm.go b/src/cmd/internal/obj/loong64/asm.go
index c59c3576c1..be316ff763 100644
--- a/src/cmd/internal/obj/loong64/asm.go
+++ b/src/cmd/internal/obj/loong64/asm.go
@@ -85,6 +85,8 @@ var optab = []Optab{
 	{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},
+	{AVSEQB, C_VREG, C_VREG, C_NONE, C_VREG, C_NONE, 2, 4, 0, 0},
+	{AXVSEQB, C_XREG, C_XREG, C_NONE, C_XREG, C_NONE, 2, 4, 0, 0},
 
 	{ACLOW, C_REG, C_NONE, C_NONE, C_REG, C_NONE, 9, 4, 0, 0},
 	{AABSF, C_FREG, C_NONE, C_NONE, C_FREG, C_NONE, 9, 4, 0, 0},
@@ -1283,6 +1285,15 @@ func buildop(ctxt *obj.Link) {
 				}
 				opset(i, r0)
 			}
+		case AVSEQB:
+			opset(AVSEQH, r0)
+			opset(AVSEQW, r0)
+			opset(AVSEQV, r0)
+
+		case AXVSEQB:
+			opset(AXVSEQH, r0)
+			opset(AXVSEQW, r0)
+			opset(AXVSEQV, r0)
 		}
 	}
 }
@@ -2125,6 +2136,22 @@ func (c *ctxt0) oprrr(a obj.As) uint32 {
 		return 0x07088 << 15 // vstx
 	case AXVMOVQ:
 		return 0x07098 << 15 // xvstx
+	case AVSEQB:
+		return 0x0e000 << 15 // vseq.b
+	case AXVSEQB:
+		return 0x0e800 << 15 // xvseq.b
+	case AVSEQH:
+		return 0x0e001 << 15 // vseq.h
+	case AXVSEQH:
+		return 0x0e801 << 15 // xvseq.h
+	case AVSEQW:
+		return 0x0e002 << 15 // vseq.w
+	case AXVSEQW:
+		return 0x0e802 << 15 // xvseq.w
+	case AVSEQV:
+		return 0x0e003 << 15 // vseq.d
+	case AXVSEQV:
+		return 0x0e803 << 15 // xvseq.d
 	}
 
 	if a < 0 {