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Diffstat (limited to 'gcc/tree-ssa-threadedge.c')
| -rw-r--r-- | gcc/tree-ssa-threadedge.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/tree-ssa-threadedge.c b/gcc/tree-ssa-threadedge.c index 7bb8829..a144875 100644 --- a/gcc/tree-ssa-threadedge.c +++ b/gcc/tree-ssa-threadedge.c @@ -1072,6 +1072,10 @@ thread_across_edge (gimple dummy_cond, /* Look at each successor of E->dest to see if we can thread through it. */ FOR_EACH_EDGE (taken_edge, ei, e->dest->succs) { + /* Push a fresh marker so we can unwind the equivalences created + for each of E->dest's successors. */ + stack->safe_push (NULL_TREE); + /* Avoid threading to any block we have already visited. */ bitmap_clear (visited); bitmap_set_bit (visited, taken_edge->dest->index); @@ -1118,6 +1122,9 @@ thread_across_edge (gimple dummy_cond, { delete_jump_thread_path (path); } + + /* And unwind the equivalence table. */ + remove_temporary_equivalences (stack); } BITMAP_FREE (visited); } |