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| author | Paul E. Murphy <murp@ibm.com> | 2020-08-20 15:06:06 -0500 |
|---|---|---|
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | 2020-08-27 13:07:57 +0000 |
| commit | 2aba467933b3252c758b65146d2ea5a5cff196da (patch) | |
| tree | 518f623f66f47b0de0a9cf3582823b321eaa7e44 /src/cmd/compile/internal/ppc64 | |
| parent | 47b450997778163dfed6f58cae379d928fc37687 (diff) | |
| download | go-2aba467933b3252c758b65146d2ea5a5cff196da.tar.gz go-2aba467933b3252c758b65146d2ea5a5cff196da.zip | |
cmd/compile: remove unused carry related ssa ops in ppc64
The intermediate SSA opcodes* are no longer generated during the
lowering pass. The shifting rules have been improved using ISEL.
Therefore, we can remove them and the rules which expand them.
* The removed opcodes are:
LoweredAdd64Carry
ADDconstForCarry
MaskIfNotCarry
FlagCarryClear
FlagCarrySet
Change-Id: I1ebe2726ed988f29ed4800c8f57b428f7a214cd0
Reviewed-on: https://go-review.googlesource.com/c/go/+/249462
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Diffstat (limited to 'src/cmd/compile/internal/ppc64')
| -rw-r--r-- | src/cmd/compile/internal/ppc64/ssa.go | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/src/cmd/compile/internal/ppc64/ssa.go b/src/cmd/compile/internal/ppc64/ssa.go index 4d2ad48135..9c4c01e935 100644 --- a/src/cmd/compile/internal/ppc64/ssa.go +++ b/src/cmd/compile/internal/ppc64/ssa.go @@ -629,23 +629,6 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) { p.To.Type = obj.TYPE_REG p.To.Reg = r - case ssa.OpPPC64MaskIfNotCarry: - r := v.Reg() - p := s.Prog(v.Op.Asm()) - p.From.Type = obj.TYPE_REG - p.From.Reg = ppc64.REGZERO - p.To.Type = obj.TYPE_REG - p.To.Reg = r - - case ssa.OpPPC64ADDconstForCarry: - r1 := v.Args[0].Reg() - p := s.Prog(v.Op.Asm()) - p.Reg = r1 - p.From.Type = obj.TYPE_CONST - p.From.Offset = v.AuxInt - p.To.Type = obj.TYPE_REG - p.To.Reg = ppc64.REGTMP // Ignored; this is for the carry effect. - case ssa.OpPPC64NEG, ssa.OpPPC64FNEG, ssa.OpPPC64FSQRT, ssa.OpPPC64FSQRTS, ssa.OpPPC64FFLOOR, ssa.OpPPC64FTRUNC, ssa.OpPPC64FCEIL, ssa.OpPPC64FCTIDZ, ssa.OpPPC64FCTIWZ, ssa.OpPPC64FCFID, ssa.OpPPC64FCFIDS, ssa.OpPPC64FRSP, ssa.OpPPC64CNTLZD, ssa.OpPPC64CNTLZW, ssa.OpPPC64POPCNTD, ssa.OpPPC64POPCNTW, ssa.OpPPC64POPCNTB, ssa.OpPPC64MFVSRD, ssa.OpPPC64MTVSRD, ssa.OpPPC64FABS, ssa.OpPPC64FNABS, @@ -1802,7 +1785,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) { v.Fatalf("Pseudo-op should not make it to codegen: %s ###\n", v.LongString()) case ssa.OpPPC64InvertFlags: v.Fatalf("InvertFlags should never make it to codegen %v", v.LongString()) - case ssa.OpPPC64FlagEQ, ssa.OpPPC64FlagLT, ssa.OpPPC64FlagGT, ssa.OpPPC64FlagCarrySet, ssa.OpPPC64FlagCarryClear: + case ssa.OpPPC64FlagEQ, ssa.OpPPC64FlagLT, ssa.OpPPC64FlagGT: v.Fatalf("Flag* ops should never make it to codegen %v", v.LongString()) case ssa.OpClobber: // TODO: implement for clobberdead experiment. Nop is ok for now. |