diff options
Diffstat (limited to 'src/cmd/compile/internal/ssa/loopbce.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/loopbce.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ssa/loopbce.go b/src/cmd/compile/internal/ssa/loopbce.go index d92566f2d3..696930fed8 100644 --- a/src/cmd/compile/internal/ssa/loopbce.go +++ b/src/cmd/compile/internal/ssa/loopbce.go @@ -130,6 +130,13 @@ func findIndVar(f *Func) []indVar { less = false } + if ind.Block != b { + // TODO: Could be extended to include disjointed loop headers. + // I don't think this is causing missed optimizations in real world code often. + // See https://go.dev/issue/63955 + continue + } + // Expect the increment to be a nonzero constant. if inc.Op != OpConst64 { continue |