From: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Date: Thu, 6 Jun 2024 08:06:39 +0000 (+0800)
Subject: cmd/internal/obj/loong64: add support for instructions FFINT.{S/D}.{W/L} and FTINT... 
X-Git-Tag: go1.24rc1~1277
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=40876244739f787fd9a4eb06503cc122b6c5ce52;p=gostls13.git

cmd/internal/obj/loong64: add support for instructions FFINT.{S/D}.{W/L} and FTINT.{W/L}.{S/D}

Go asm syntax:
	FFINT{F/D}{W/V}		FJ, FD
	FTINT{W/V}{F/D}		FJ, FD

Equivalent platform assembler syntax:
	ffint.{s/d}.{w/l}	fd, fj
	ftint.{w/l}.{s/d}	fd, fj

Ref: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html

Change-Id: Ie7646c5d49645c63b274b34b66539f10370f4930
Reviewed-on: https://go-review.googlesource.com/c/go/+/590996
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
---

diff --git a/src/cmd/asm/internal/asm/testdata/loong64enc1.s b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
index 7aeb2920bd..57f16839eb 100644
--- a/src/cmd/asm/internal/asm/testdata/loong64enc1.s
+++ b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
@@ -283,3 +283,12 @@ lable2:
 	FCOPYSGD	F4, F5, F6	// a6101301
 	FCLASSF		F4, F5		// 85341401
 	FCLASSD		F4, F5		// 85381401
+
+	FFINTFW		F0, F1		// 01101d01
+	FFINTFV		F0, F1		// 01181d01
+	FFINTDW		F0, F1		// 01201d01
+	FFINTDV		F0, F1		// 01281d01
+	FTINTWF		F0, F1		// 01041b01
+	FTINTWD		F0, F1		// 01081b01
+	FTINTVF		F0, F1		// 01241b01
+	FTINTVD		F0, F1		// 01281b01
diff --git a/src/cmd/internal/obj/loong64/a.out.go b/src/cmd/internal/obj/loong64/a.out.go
index 878f148f15..4dc7a84994 100644
--- a/src/cmd/internal/obj/loong64/a.out.go
+++ b/src/cmd/internal/obj/loong64/a.out.go
@@ -454,6 +454,16 @@ const (
 	AFCLASSF
 	AFCLASSD
 
+	// 3.2.3.2
+	AFFINTFW
+	AFFINTFV
+	AFFINTDW
+	AFFINTDV
+	AFTINTWF
+	AFTINTWD
+	AFTINTVF
+	AFTINTVD
+
 	ALAST
 
 	// aliases
diff --git a/src/cmd/internal/obj/loong64/anames.go b/src/cmd/internal/obj/loong64/anames.go
index aac8ac92b8..2d80a8aa10 100644
--- a/src/cmd/internal/obj/loong64/anames.go
+++ b/src/cmd/internal/obj/loong64/anames.go
@@ -187,5 +187,13 @@ var Anames = []string{
 	"FCOPYSGD",
 	"FCLASSF",
 	"FCLASSD",
+	"FFINTFW",
+	"FFINTFV",
+	"FFINTDW",
+	"FFINTDV",
+	"FTINTWF",
+	"FTINTWD",
+	"FTINTVF",
+	"FTINTVD",
 	"LAST",
 }
diff --git a/src/cmd/internal/obj/loong64/asm.go b/src/cmd/internal/obj/loong64/asm.go
index 6ac02df988..02ecbe71f6 100644
--- a/src/cmd/internal/obj/loong64/asm.go
+++ b/src/cmd/internal/obj/loong64/asm.go
@@ -1037,6 +1037,14 @@ func buildop(ctxt *obj.Link) {
 			opset(AMOVDV, r0)
 			opset(ATRUNCDV, r0)
 			opset(ATRUNCFV, r0)
+			opset(AFFINTFW, r0)
+			opset(AFFINTFV, r0)
+			opset(AFFINTDW, r0)
+			opset(AFFINTDV, r0)
+			opset(AFTINTWF, r0)
+			opset(AFTINTWD, r0)
+			opset(AFTINTVF, r0)
+			opset(AFTINTVD, r0)
 
 		case AADD:
 			opset(ASGT, r0)
@@ -1964,6 +1972,22 @@ func (c *ctxt0) oprr(a obj.As) uint32 {
 		return 0x450d << 10 // fclass.s
 	case AFCLASSD:
 		return 0x450e << 10 // fclass.d
+	case AFFINTFW:
+		return 0x4744 << 10 // ffint.s.w
+	case AFFINTFV:
+		return 0x4746 << 10 // ffint.s.l
+	case AFFINTDW:
+		return 0x4748 << 10 // ffint.d.w
+	case AFFINTDV:
+		return 0x474a << 10 // ffint.d.l
+	case AFTINTWF:
+		return 0x46c1 << 10 // ftint.w.s
+	case AFTINTWD:
+		return 0x46c2 << 10 // ftint.w.d
+	case AFTINTVF:
+		return 0x46c9 << 10 // ftint.l.s
+	case AFTINTVD:
+		return 0x46ca << 10 // ftint.l.d
 	}
 
 	c.ctxt.Diag("bad rr opcode %v", a)