From: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Date: Mon, 30 Dec 2024 02:08:58 +0000 (+0800)
Subject: cmd/internal/obj/loong64: add F{MAXA/MINA}.{S/D} instructions
X-Git-Tag: go1.25rc1~851
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=2ce1fb4220e1978d8ea7c615f8ae2d9170985640;p=gostls13.git

cmd/internal/obj/loong64: add F{MAXA/MINA}.{S/D} instructions

Go asm syntax:
	F{MAXA/MINA}{F/D}	FK, FJ, FD

Equivalent platform assembler syntax:
	f{maxa/mina}.{s/d}	fd, fj, fk

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

Change-Id: I6790657d2f36bdf5e6818b6c0aaa48117e782b8d
Reviewed-on: https://go-review.googlesource.com/c/go/+/653915
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
---

diff --git a/src/cmd/asm/internal/asm/testdata/loong64enc1.s b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
index 1d34088096..3a8b8b8e5a 100644
--- a/src/cmd/asm/internal/asm/testdata/loong64enc1.s
+++ b/src/cmd/asm/internal/asm/testdata/loong64enc1.s
@@ -346,6 +346,15 @@ lable2:
 	FTINTVF		F0, F1		// 01241b01
 	FTINTVD		F0, F1		// 01281b01
 
+	FMAXAF		F4, F5, F6	// a6900c01
+	FMAXAF		F4, F5		// a5900c01
+	FMAXAD		F4, F5, F6	// a6100d01
+	FMAXAD		F4, F5		// a5100d01
+	FMINAF		F4, F5, F6	// a6900e01
+	FMINAF		F4, F5		// a5900e01
+	FMINAD		F4, F5, F6	// a6100f01
+	FMINAD		F4, F5		// a5100f01
+
 	FTINTRMWF	F0, F2		// 02041a01
 	FTINTRMWD	F0, F2		// 02081a01
 	FTINTRMVF	F0, F2		// 02241a01
diff --git a/src/cmd/internal/obj/loong64/a.out.go b/src/cmd/internal/obj/loong64/a.out.go
index 6660ab3b38..842c800bf5 100644
--- a/src/cmd/internal/obj/loong64/a.out.go
+++ b/src/cmd/internal/obj/loong64/a.out.go
@@ -695,6 +695,12 @@ const (
 	AFMAXF
 	AFMAXD
 
+	// 3.2.1.4
+	AFMAXAF
+	AFMAXAD
+	AFMINAF
+	AFMINAD
+
 	// 3.2.1.7
 	AFCOPYSGF
 	AFCOPYSGD
diff --git a/src/cmd/internal/obj/loong64/anames.go b/src/cmd/internal/obj/loong64/anames.go
index bf17058ce6..82c38dde1a 100644
--- a/src/cmd/internal/obj/loong64/anames.go
+++ b/src/cmd/internal/obj/loong64/anames.go
@@ -223,6 +223,10 @@ var Anames = []string{
 	"FMIND",
 	"FMAXF",
 	"FMAXD",
+	"FMAXAF",
+	"FMAXAD",
+	"FMINAF",
+	"FMINAD",
 	"FCOPYSGF",
 	"FCOPYSGD",
 	"FSCALEBF",
diff --git a/src/cmd/internal/obj/loong64/asm.go b/src/cmd/internal/obj/loong64/asm.go
index 5a5b31ab2f..96c0e7b890 100644
--- a/src/cmd/internal/obj/loong64/asm.go
+++ b/src/cmd/internal/obj/loong64/asm.go
@@ -1362,6 +1362,10 @@ func buildop(ctxt *obj.Link) {
 			opset(AFCOPYSGD, r0)
 			opset(AFSCALEBF, r0)
 			opset(AFSCALEBD, r0)
+			opset(AFMAXAF, r0)
+			opset(AFMAXAD, r0)
+			opset(AFMINAF, r0)
+			opset(AFMINAD, r0)
 
 		case AFMADDF:
 			opset(AFMADDD, r0)
@@ -2641,6 +2645,14 @@ func (c *ctxt0) oprrr(a obj.As) uint32 {
 		return 0x211 << 15 // fmax.s
 	case AFMAXD:
 		return 0x212 << 15 // fmax.d
+	case AFMAXAF:
+		return 0x219 << 15 // fmaxa.s
+	case AFMAXAD:
+		return 0x21a << 15 // fmaxa.d
+	case AFMINAF:
+		return 0x21d << 15 // fmina.s
+	case AFMINAD:
+		return 0x21e << 15 // fmina.d
 	case AFSCALEBF:
 		return 0x221 << 15 // fscaleb.s
 	case AFSCALEBD: