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cmd/internal/obj/loong64: add VPERMI.W, XVPERMI.{W,V,Q} instruction support

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Go asm syntax:
	 VPERMIW        $0x1b, vj, vd
	XVPERMI{W,V,Q}  $0x1b, xj, xd

Equivalent platform assembler syntax:
	 vpermi.w       vd, vj, $0x1b
	xvpermi.{w,d,q} xd, xj, $0x1b

Change-Id: Ie23b2fdd09b4c93801dc804913206f1c5a496268
Reviewed-on: https://go-review.googlesource.com/c/go/+/716800
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
This commit is contained in:
Guoqi Chen 2025-10-29 15:43:54 +08:00 • committed by abner chenc
parent e2c6a2024c
commit dadbac0c9e
5 changed files with 44 additions and 0 deletions
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12
src/cmd/internal/obj/loong64/asm.go
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@ -1778,6 +1778,7 @@ func buildop(ctxt *obj.Link) {
opset(AVSHUF4IH, r0)
opset(AVSHUF4IW, r0)
opset(AVSHUF4IV, r0)
opset(AVPERMIW, r0)
case AXVANDB:
opset(AXVORB, r0)
@ -1787,6 +1788,9 @@ func buildop(ctxt *obj.Link) {
opset(AXVSHUF4IH, r0)
opset(AXVSHUF4IW, r0)
opset(AXVSHUF4IV, r0)
opset(AXVPERMIW, r0)
opset(AXVPERMIV, r0)
opset(AXVPERMIQ, r0)
case AVANDV:
opset(AVORV, r0)
@ -4362,6 +4366,14 @@ func (c *ctxt0) opirr(a obj.As) uint32 {
return 0x1de6 << 18 // xvshuf4i.w
case AXVSHUF4IV:
return 0x1de7 << 18 // xvshuf4i.d
case AVPERMIW:
return 0x1cf9 << 18 // vpermi.w
case AXVPERMIW:
return 0x1df9 << 18 // xvpermi.w
case AXVPERMIV:
return 0x1dfa << 18 // xvpermi.d
case AXVPERMIQ:
return 0x1dfb << 18 // xvpermi.q
case AVBITCLRB:
return 0x1CC4<<18 | 0x1<<13 // vbitclri.b
case AVBITCLRH: