diff options
| -rw-r--r-- | lib/Transforms/IPO/DeadArgumentElimination.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Transforms/IPO/DeadArgumentElimination.cpp b/lib/Transforms/IPO/DeadArgumentElimination.cpp index d2a5f28cb7..11c083b393 100644 --- a/lib/Transforms/IPO/DeadArgumentElimination.cpp +++ b/lib/Transforms/IPO/DeadArgumentElimination.cpp @@ -134,6 +134,7 @@ namespace { const UseVector &MaybeLiveUses); void MarkLive(const RetOrArg &RA); void MarkLive(const Function &F); + void PropagateLiveness(const RetOrArg &RA); bool RemoveDeadStuffFromFunction(Function *F); bool DeleteDeadVarargs(Function &Fn); }; @@ -545,7 +546,12 @@ void DAE::MarkLive(const RetOrArg &RA) { return; // We were already marked Live. DOUT << "DAE - Marking " << RA.getDescription() << " live\n"; + PropagateLiveness(RA); +} +/// PropagateLiveness - Given that RA is a live value, propagate it's liveness +/// to any other values it uses (according to Uses). +void DAE::PropagateLiveness(const RetOrArg &RA) { // We don't use upper_bound (or equal_range) here, because our recursive call // to ourselves is likely to cause the upper_bound (which is the first value // not belonging to RA) to become erased and the iterator invalidated. |