diff options
Diffstat (limited to 'src/cmd/compile/internal/ssa/rewrite386.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/rewrite386.go | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/cmd/compile/internal/ssa/rewrite386.go b/src/cmd/compile/internal/ssa/rewrite386.go index 2a0a92bb83..59a9edee8f 100644 --- a/src/cmd/compile/internal/ssa/rewrite386.go +++ b/src/cmd/compile/internal/ssa/rewrite386.go @@ -10046,14 +10046,14 @@ func rewriteValue386_OpMove(v *Value) bool { return true } // match: (Move [s] dst src mem) - // cond: s > 8 && s <= 4*128 && s%4 == 0 && !config.noDuffDevice + // cond: s > 8 && s <= 4*128 && s%4 == 0 && !config.noDuffDevice && logLargeCopy(v, s) // result: (DUFFCOPY [10*(128-s/4)] dst src mem) for { s := v.AuxInt dst := v_0 src := v_1 mem := v_2 - if !(s > 8 && s <= 4*128 && s%4 == 0 && !config.noDuffDevice) { + if !(s > 8 && s <= 4*128 && s%4 == 0 && !config.noDuffDevice && logLargeCopy(v, s)) { break } v.reset(Op386DUFFCOPY) @@ -10062,14 +10062,14 @@ func rewriteValue386_OpMove(v *Value) bool { return true } // match: (Move [s] dst src mem) - // cond: (s > 4*128 || config.noDuffDevice) && s%4 == 0 + // cond: (s > 4*128 || config.noDuffDevice) && s%4 == 0 && logLargeCopy(v, s) // result: (REPMOVSL dst src (MOVLconst [s/4]) mem) for { s := v.AuxInt dst := v_0 src := v_1 mem := v_2 - if !((s > 4*128 || config.noDuffDevice) && s%4 == 0) { + if !((s > 4*128 || config.noDuffDevice) && s%4 == 0 && logLargeCopy(v, s)) { break } v.reset(Op386REPMOVSL) |