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[dev.simd] cmd/compile: add simdFp1gp1fp1Imm8 helper to amd64 code generation

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This is for VPINSRB[BWDQ], coming in a later CL.

Change-Id: I6b4b99be43512623d4d6e5542221c18f0c5c2eb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/682956
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
David Chase 2025-06-20 15:18:03 -04:00
parent 4150372a5d
commit 7c6ac35275
1 changed files with 16 additions and 0 deletions
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16
src/cmd/compile/internal/amd64/ssa.go
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@ -1626,6 +1626,22 @@ func simdFp21Imm8(s *ssagen.State, v *ssa.Value) *obj.Prog {
return p
}
// Example instruction: VPINSRB $3, DX, X0, X0
func simdFp1gp1fp1Imm8(s *ssagen.State, v *ssa.Value) *obj.Prog {
p := s.Prog(v.Op.Asm())
imm := v.AuxInt
if imm < 0 || imm > 255 {
v.Fatalf("Invalid source selection immediate")
}
p.From.Offset = imm
p.From.Type = obj.TYPE_CONST
p.AddRestSourceReg(v.Args[1].Reg())
p.AddRestSourceReg(simdReg(v.Args[0]))
p.To.Type = obj.TYPE_REG
p.To.Reg = simdReg(v)
return p
}
// Example instruction: VPCMPD $1, Z1, Z2, K1
func simdFp2k1Imm8(s *ssagen.State, v *ssa.Value) *obj.Prog {
return simdFp21Imm8(s, v)