diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/compile/internal/ssa/compile.go | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/ssa/compile.go b/src/cmd/compile/internal/ssa/compile.go index 38f12abf18..8f9c26d065 100644 --- a/src/cmd/compile/internal/ssa/compile.go +++ b/src/cmd/compile/internal/ssa/compile.go @@ -414,9 +414,9 @@ var passes = [...]pass{ {name: "late phielim", fn: phielim}, {name: "late copyelim", fn: copyelim}, {name: "tighten", fn: tighten}, // move values closer to their uses - {name: "phi tighten", fn: phiTighten}, {name: "late deadcode", fn: deadcode}, {name: "critical", fn: critical, required: true}, // remove critical edges + {name: "phi tighten", fn: phiTighten}, // place rematerializable phi args near uses to reduce value lifetimes {name: "likelyadjust", fn: likelyadjust}, {name: "layout", fn: layout, required: true}, // schedule blocks {name: "schedule", fn: schedule, required: true}, // schedule values @@ -467,6 +467,8 @@ var passOrder = [...]constraint{ {"decompose builtin", "late opt"}, // decompose builtin is the last pass that may introduce new float ops, so run softfloat after it {"decompose builtin", "softfloat"}, + // remove critical edges before phi tighten, so that phi args get better placement + {"critical", "phi tighten"}, // don't layout blocks until critical edges have been removed {"critical", "layout"}, // regalloc requires the removal of all critical edges |