diff options
| author | Cherry Zhang <cherryyz@google.com> | 2016-08-04 06:57:34 -0400 |
|---|---|---|
| committer | Cherry Zhang <cherryyz@google.com> | 2016-08-07 03:08:03 +0000 |
| commit | 0484052358ffdfb64cd533b3ea55f7c2b9d0b7bd (patch) | |
| tree | 9970070d3ef8a2fbfa441078188b8ba4cf960e5b /src/cmd/compile/internal/ssa/flagalloc.go | |
| parent | 01ae4b1da4fd38c0cc5f370c958aa67735fdcd40 (diff) | |
| download | go-0484052358ffdfb64cd533b3ea55f7c2b9d0b7bd.tar.gz go-0484052358ffdfb64cd533b3ea55f7c2b9d0b7bd.zip | |
[dev.ssa] cmd/compile: remove flags from regMask
Reg allocator skips flag-typed values. Flag allocator uses the type
and whether the op has "clobberFlags" set.
Tested on AMD64, ARM, ARM64, 386. Passed 'toolstash -cmp' on AMD64.
PPC64 is coded blindly.
Change-Id: Ib1cc27efecef6a1bb27f7d7ed035a582660d244f
Reviewed-on: https://go-review.googlesource.com/25480
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Diffstat (limited to 'src/cmd/compile/internal/ssa/flagalloc.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/flagalloc.go | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/cmd/compile/internal/ssa/flagalloc.go b/src/cmd/compile/internal/ssa/flagalloc.go index 1aa82a3947..aefa81b5b3 100644 --- a/src/cmd/compile/internal/ssa/flagalloc.go +++ b/src/cmd/compile/internal/ssa/flagalloc.go @@ -31,7 +31,7 @@ func flagalloc(f *Func) { if v == flag { flag = nil } - if opcodeTable[v.Op].reg.clobbers&f.Config.flagRegMask != 0 { + if opcodeTable[v.Op].clobberFlags { flag = nil } for _, a := range v.Args { @@ -103,7 +103,7 @@ func flagalloc(f *Func) { } // Issue v. b.Values = append(b.Values, v) - if opcodeTable[v.Op].reg.clobbers&f.Config.flagRegMask != 0 { + if opcodeTable[v.Op].clobberFlags { flag = nil } if v.Type.IsFlags() { |