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cmd/compile: add indexed-load CMP instructions

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Things like CMPQ 4(AX)(BX*8), CX

Fixes #37955

Change-Id: Icbed430f65c91a0e3f38a633d8321d79433ad8b3
Reviewed-on: https://go-review.googlesource.com/c/go/+/224219
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
This commit is contained in:
Keith Randall 2020-03-19 17:48:42 -07:00
parent 7ffbea9fd8
commit bba88467f8
7 changed files with 724 additions and 0 deletions
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13
src/cmd/compile/internal/amd64/ssa.go
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@ -681,6 +681,19 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
gc.AddAux2(&p.From, v, sc.Off())
p.To.Type = obj.TYPE_CONST
p.To.Offset = sc.Val()
case ssa.OpAMD64CMPQloadidx8, ssa.OpAMD64CMPQloadidx1, ssa.OpAMD64CMPLloadidx4, ssa.OpAMD64CMPLloadidx1, ssa.OpAMD64CMPWloadidx2, ssa.OpAMD64CMPWloadidx1, ssa.OpAMD64CMPBloadidx1:
p := s.Prog(v.Op.Asm())
memIdx(&p.From, v)
gc.AddAux(&p.From, v)
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Args[2].Reg()
case ssa.OpAMD64CMPQconstloadidx8, ssa.OpAMD64CMPQconstloadidx1, ssa.OpAMD64CMPLconstloadidx4, ssa.OpAMD64CMPLconstloadidx1, ssa.OpAMD64CMPWconstloadidx2, ssa.OpAMD64CMPWconstloadidx1, ssa.OpAMD64CMPBconstloadidx1:
sc := v.AuxValAndOff()
p := s.Prog(v.Op.Asm())
memIdx(&p.From, v)
gc.AddAux2(&p.From, v, sc.Off())
p.To.Type = obj.TYPE_CONST
p.To.Offset = sc.Val()
case ssa.OpAMD64MOVLconst, ssa.OpAMD64MOVQconst:
x := v.Reg()