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cmd/internal/obj/loong64: add support for instructions FCOPYSIGN.{S/D} and FCLASS.{S/D}

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Go asm syntax:
	FCOPYSG{F/D}	FK, FJ, FD
	FCLASSF{F/D}	FJ, FD

Equivalent platform assembler syntax:
	fcopysign.{s/d}	fd, fj, fk
	fclass.{s/d}	fd, fj

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

Change-Id: Ied34b71c9d0b34456ac5782a59d29d2d0229e326
Reviewed-on: https://go-review.googlesource.com/c/go/+/590675
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Xiaolin Zhao 2024-06-05 10:52:08 +08:00 • committed by Gopher Robot
parent 2ffcfcef55
commit b874005a84
4 changed files with 29 additions and 0 deletions
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12
src/cmd/internal/obj/loong64/asm.go
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@ -1028,6 +1028,8 @@ func buildop(ctxt *obj.Link) {
opset(ATRUNCFW, r0)
opset(ASQRTF, r0)
opset(ASQRTD, r0)
opset(AFCLASSF, r0)
opset(AFCLASSD, r0)
case AMOVVF:
opset(AMOVVD, r0)
@ -1056,6 +1058,8 @@ func buildop(ctxt *obj.Link) {
opset(AFMIND, r0)
opset(AFMAXF, r0)
opset(AFMAXD, r0)
opset(AFCOPYSGF, r0)
opset(AFCOPYSGD, r0)
case AAND:
opset(AOR, r0)
@ -1884,6 +1888,10 @@ func (c *ctxt0) oprrr(a obj.As) uint32 {
return 0x211 << 15 // fmax.s
case AFMAXD:
return 0x212 << 15 // fmax.d
case AFCOPYSGF:
return 0x225 << 15 // fcopysign.s
case AFCOPYSGD:
return 0x226 << 15 // fcopysign.d
}
if a < 0 {
@ -1952,6 +1960,10 @@ func (c *ctxt0) oprr(a obj.As) uint32 {
return 0x4511 << 10
case ASQRTD:
return 0x4512 << 10
case AFCLASSF:
return 0x450d << 10 // fclass.s
case AFCLASSD:
return 0x450e << 10 // fclass.d
}
c.ctxt.Diag("bad rr opcode %v", a)