diff --git a/src/cmd/asm/internal/asm/testdata/loong64enc1.s b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
index 277396bf27c..b3fcf7db15e 100644
--- a/src/cmd/asm/internal/asm/testdata/loong64enc1.s
+++ b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
@@ -597,6 +597,42 @@ lable2:
 	XVSEQV		$15, X2, X4     // 44bc8176
 	XVSEQV		$-15, X2, X4    // 44c48176
 
+	// VSLTB{B,H,W,V}, XVSLTB{B,H,W,V} instruction
+	VSLTB		V1, V2, V3      // 43040670
+	VSLTH		V1, V2, V3      // 43840670
+	VSLTW		V1, V2, V3      // 43040770
+	VSLTV		V1, V2, V3      // 43840770
+	XVSLTB		X1, X2, X3      // 43040674
+	XVSLTH		X1, X2, X3      // 43840674
+	XVSLTW		X1, X2, X3      // 43040774
+	XVSLTV		X1, X2, X3      // 43840774
+	VSLTB		$1, V2, V3      // 43048672
+	VSLTH		$16, V2, V3     // 43c08672
+	VSLTW		$-16, V2, V3    // 43408772
+	VSLTV		$-15, V2, V3    // 43c48772
+	XVSLTB		$1, X2, X3      // 43048676
+	XVSLTH		$16, X2, X3     // 43c08676
+	XVSLTW		$-16, X2, X3    // 43408776
+	XVSLTV		$-16, X2, X3    // 43c08776
+
+	// VSLTB{B,H,W,V}U, XVSLTB{B,H,W,V}U instruction
+	VSLTBU		V1, V2, V3      // 43040870
+	VSLTHU		V1, V2, V3      // 43840870
+	VSLTWU		V1, V2, V3      // 43040970
+	VSLTVU		V1, V2, V3      // 43840970
+	XVSLTBU		X1, X2, X3      // 43040874
+	XVSLTHU		X1, X2, X3      // 43840874
+	XVSLTWU		X1, X2, X3      // 43040974
+	XVSLTVU		X1, X2, X3      // 43840974
+	VSLTBU		$0, V2, V3      // 43008872
+	VSLTHU		$31, V2, V3     // 43fc8872
+	VSLTWU		$16, V2, V3     // 43408972
+	VSLTVU		$1, V2, V3      // 43848972
+	XVSLTBU		$0, X2, X3      // 43008876
+	XVSLTHU		$31, X2, X3     // 43fc8876
+	XVSLTWU		$8, X2, X3      // 43208976
+	XVSLTVU		$0, X2, X3      // 43808976
+
 	// VPCNT{B,H,W,V}, XVPCNT{B,H,W,V} instruction
 	VPCNTB		V1, V2          // 22209c72
 	VPCNTH		V1, V2          // 22249c72
diff --git a/src/cmd/internal/obj/loong64/a.out.go b/src/cmd/internal/obj/loong64/a.out.go
index 5b8bffc9f1e..2eabe9bda8a 100644
--- a/src/cmd/internal/obj/loong64/a.out.go
+++ b/src/cmd/internal/obj/loong64/a.out.go
@@ -912,6 +912,23 @@ const (
 	AVSEQV
 	AXVSEQV
 
+	AVSLTB
+	AVSLTH
+	AVSLTW
+	AVSLTV
+	AVSLTBU
+	AVSLTHU
+	AVSLTWU
+	AVSLTVU
+	AXVSLTB
+	AXVSLTH
+	AXVSLTW
+	AXVSLTV
+	AXVSLTBU
+	AXVSLTHU
+	AXVSLTWU
+	AXVSLTVU
+
 	// LSX and LASX integer div and mod instructions
 	AVDIVB
 	AVDIVH
diff --git a/src/cmd/internal/obj/loong64/anames.go b/src/cmd/internal/obj/loong64/anames.go
index 1749b43bf64..92e3cab950f 100644
--- a/src/cmd/internal/obj/loong64/anames.go
+++ b/src/cmd/internal/obj/loong64/anames.go
@@ -400,6 +400,22 @@ var Anames = []string{
 	"XVSEQW",
 	"VSEQV",
 	"XVSEQV",
+	"VSLTB",
+	"VSLTH",
+	"VSLTW",
+	"VSLTV",
+	"VSLTBU",
+	"VSLTHU",
+	"VSLTWU",
+	"VSLTVU",
+	"XVSLTB",
+	"XVSLTH",
+	"XVSLTW",
+	"XVSLTV",
+	"XVSLTBU",
+	"XVSLTHU",
+	"XVSLTWU",
+	"XVSLTVU",
 	"VDIVB",
 	"VDIVH",
 	"VDIVW",
diff --git a/src/cmd/internal/obj/loong64/asm.go b/src/cmd/internal/obj/loong64/asm.go
index b35e49a1b6e..a39a6683160 100644
--- a/src/cmd/internal/obj/loong64/asm.go
+++ b/src/cmd/internal/obj/loong64/asm.go
@@ -93,6 +93,14 @@ var optab = []Optab{
 	{AXVSEQB, C_XREG, C_XREG, C_NONE, C_XREG, C_NONE, 2, 4, 0, 0},
 	{AVSEQB, C_S5CON, C_VREG, C_NONE, C_VREG, C_NONE, 22, 4, 0, 0},
 	{AXVSEQB, C_S5CON, C_XREG, C_NONE, C_XREG, C_NONE, 22, 4, 0, 0},
+
+	{AVSLTB, C_VREG, C_VREG, C_NONE, C_VREG, C_NONE, 2, 4, 0, 0},
+	{AXVSLTB, C_XREG, C_XREG, C_NONE, C_XREG, C_NONE, 2, 4, 0, 0},
+	{AVSLTB, C_S5CON, C_VREG, C_NONE, C_VREG, C_NONE, 22, 4, 0, 0},
+	{AXVSLTB, C_S5CON, C_XREG, C_NONE, C_XREG, C_NONE, 22, 4, 0, 0},
+	{AVSLTB, C_U5CON, C_VREG, C_NONE, C_VREG, C_NONE, 31, 4, 0, 0},
+	{AXVSLTB, C_U5CON, C_XREG, C_NONE, C_XREG, C_NONE, 31, 4, 0, 0},
+
 	{AVANDV, C_VREG, C_VREG, C_NONE, C_VREG, C_NONE, 2, 4, 0, 0},
 	{AVANDV, C_VREG, C_NONE, C_NONE, C_VREG, C_NONE, 2, 4, 0, 0},
 	{AXVANDV, C_XREG, C_XREG, C_NONE, C_XREG, C_NONE, 2, 4, 0, 0},
@@ -1784,6 +1792,24 @@ func buildop(ctxt *obj.Link) {
 			opset(AXVSHUFW, r0)
 			opset(AXVSHUFV, r0)
 
+		case AVSLTB:
+			opset(AVSLTH, r0)
+			opset(AVSLTW, r0)
+			opset(AVSLTV, r0)
+			opset(AVSLTBU, r0)
+			opset(AVSLTHU, r0)
+			opset(AVSLTWU, r0)
+			opset(AVSLTVU, r0)
+
+		case AXVSLTB:
+			opset(AXVSLTH, r0)
+			opset(AXVSLTW, r0)
+			opset(AXVSLTV, r0)
+			opset(AXVSLTBU, r0)
+			opset(AXVSLTHU, r0)
+			opset(AXVSLTWU, r0)
+			opset(AXVSLTVU, r0)
+
 		case AVANDB:
 			opset(AVORB, r0)
 			opset(AVXORB, r0)
@@ -3379,6 +3405,38 @@ func (c *ctxt0) oprrr(a obj.As) uint32 {
 		return 0x0e003 << 15 // vseq.d
 	case AXVSEQV:
 		return 0x0e803 << 15 // xvseq.d
+	case AVSLTB:
+		return 0x0E00C << 15 // vslt.b
+	case AVSLTH:
+		return 0x0E00D << 15 // vslt.h
+	case AVSLTW:
+		return 0x0E00E << 15 // vslt.w
+	case AVSLTV:
+		return 0x0E00F << 15 // vslt.d
+	case AVSLTBU:
+		return 0x0E010 << 15 // vslt.bu
+	case AVSLTHU:
+		return 0x0E011 << 15 // vslt.hu
+	case AVSLTWU:
+		return 0x0E012 << 15 // vslt.wu
+	case AVSLTVU:
+		return 0x0E013 << 15 // vslt.du
+	case AXVSLTB:
+		return 0x0E80C << 15 // xvslt.b
+	case AXVSLTH:
+		return 0x0E80D << 15 // xvslt.h
+	case AXVSLTW:
+		return 0x0E80E << 15 // xvslt.w
+	case AXVSLTV:
+		return 0x0E80F << 15 // xvslt.d
+	case AXVSLTBU:
+		return 0x0E810 << 15 // xvslt.bu
+	case AXVSLTHU:
+		return 0x0E811 << 15 // xvslt.hu
+	case AXVSLTWU:
+		return 0x0E812 << 15 // xvslt.wu
+	case AXVSLTVU:
+		return 0x0E813 << 15 // xvslt.du
 	case AVANDV:
 		return 0x0E24C << 15 // vand.v
 	case AVORV:
@@ -4399,6 +4457,38 @@ func (c *ctxt0) opirr(a obj.As) uint32 {
 		return 0x0ED02 << 15 // xvseqi.w
 	case AXVSEQV:
 		return 0x0ED03 << 15 // xvseqi.d
+	case AVSLTB:
+		return 0x0E50C << 15 // vslti.b
+	case AVSLTH:
+		return 0x0E50D << 15 // vslti.h
+	case AVSLTW:
+		return 0x0E50E << 15 // vslti.w
+	case AVSLTV:
+		return 0x0E50F << 15 // vslti.d
+	case AVSLTBU:
+		return 0x0E510 << 15 // vslti.bu
+	case AVSLTHU:
+		return 0x0E511 << 15 // vslti.hu
+	case AVSLTWU:
+		return 0x0E512 << 15 // vslti.wu
+	case AVSLTVU:
+		return 0x0E513 << 15 // vslti.du
+	case AXVSLTB:
+		return 0x0ED0C << 15 // xvslti.b
+	case AXVSLTH:
+		return 0x0ED0D << 15 // xvslti.h
+	case AXVSLTW:
+		return 0x0ED0E << 15 // xvslti.w
+	case AXVSLTV:
+		return 0x0ED0F << 15 // xvslti.d
+	case AXVSLTBU:
+		return 0x0ED10 << 15 // xvslti.bu
+	case AXVSLTHU:
+		return 0x0ED11 << 15 // xvslti.hu
+	case AXVSLTWU:
+		return 0x0ED12 << 15 // xvslti.wu
+	case AXVSLTVU:
+		return 0x0ED13 << 15 // xvslti.du
 	case AVROTRB:
 		return 0x1ca8<<18 | 0x1<<13 // vrotri.b
 	case AVROTRH: