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

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 7aeb2920bd4e0216209810644a018fbc3faa2f6b..57f16839eba3456de83718562bc57f677b6d8926 100644 (file)
--- 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 878f148f15290dde11387e490dc4d837e2de097f..4dc7a8499435b48664d6214f79b4fd8a04c15806 100644 (file)
--- 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 aac8ac92b88d36eef595de3bc16ede08a0a6bc7a..2d80a8aa10fbe9e03dc23e83cdb7a84ffcad8fe9 100644 (file)
--- 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 6ac02df988777b9b773de82aaf421502291598f1..02ecbe71f6825464bbe3df953720ae21f963b189 100644 (file)
--- 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)