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cmd/internal/obj/loong64: add {V,XV}{FSQRT/FRECIP/FRSQRT}.{S/D} instructions support

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Go asm syntax:
	 V{FSQRT/FRECIP/FRSQRT}{F/D}	VJ, VD
	XV{FSQRT/FRECIP/FRSQRT}{F/D}	XJ, XD

Equivalent platform assembler syntax:
	 v{fsqrt/frecip/frsqrt}.{s/d}	vd, vj
	xv{fsqrt/frecip/frsqrt}.{s/d}	xd, xj

Change-Id: I3fdbe3193659d7532164451b087ccf725053172f
Reviewed-on: https://go-review.googlesource.com/c/go/+/636395
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
This commit is contained in:
Xiaolin Zhao 2024-12-16 10:53:00 +08:00 • committed by abner chenc
parent 937368f84e
commit 80f068928f
4 changed files with 76 additions and 0 deletions
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36
src/cmd/internal/obj/loong64/asm.go
View file

@ -1653,11 +1653,23 @@ func buildop(ctxt *obj.Link) {
opset(AVPCNTH, r0)
opset(AVPCNTW, r0)
opset(AVPCNTV, r0)
opset(AVFSQRTF, r0)
opset(AVFSQRTD, r0)
opset(AVFRECIPF, r0)
opset(AVFRECIPD, r0)
opset(AVFRSQRTF, r0)
opset(AVFRSQRTD, r0)
case AXVPCNTB:
opset(AXVPCNTH, r0)
opset(AXVPCNTW, r0)
opset(AXVPCNTV, r0)
opset(AXVFSQRTF, r0)
opset(AXVFSQRTD, r0)
opset(AXVFRECIPF, r0)
opset(AXVFRECIPD, r0)
opset(AXVFRSQRTF, r0)
opset(AXVFRSQRTD, r0)
case AVADDB:
opset(AVADDH, r0)
@ -3330,6 +3342,30 @@ func (c *ctxt0) oprr(a obj.As) uint32 {
return 0x1da70a << 10 // xvpcnt.w
case AXVPCNTV:
return 0x1da70b << 10 // xvpcnt.v
case AVFSQRTF:
return 0x1ca739 << 10 // vfsqrt.s
case AVFSQRTD:
return 0x1ca73a << 10 // vfsqrt.d
case AVFRECIPF:
return 0x1ca73d << 10 // vfrecip.s
case AVFRECIPD:
return 0x1ca73e << 10 // vfrecip.d
case AVFRSQRTF:
return 0x1ca741 << 10 // vfrsqrt.s
case AVFRSQRTD:
return 0x1ca742 << 10 // vfrsqrt.d
case AXVFSQRTF:
return 0x1da739 << 10 // xvfsqrt.s
case AXVFSQRTD:
return 0x1da73a << 10 // xvfsqrt.d
case AXVFRECIPF:
return 0x1da73d << 10 // xvfrecip.s
case AXVFRECIPD:
return 0x1da73e << 10 // xvfrecip.d
case AXVFRSQRTF:
return 0x1da741 << 10 // xvfrsqrt.s
case AXVFRSQRTD:
return 0x1da742 << 10 // xvfrsqrt.d
}
c.ctxt.Diag("bad rr opcode %v", a)