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Diffstat (limited to 'gcc/tree-ssa-threadupdate.c')
| -rw-r--r-- | gcc/tree-ssa-threadupdate.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c index 9ab9e7d..b6bc5fc 100644 --- a/gcc/tree-ssa-threadupdate.c +++ b/gcc/tree-ssa-threadupdate.c @@ -1309,7 +1309,9 @@ thread_block_1 (basic_block bb, bool noloop_only, bool joiners) and thread this elsewhere, so just cancel the jump threading request by clearing the AUX field now. */ if (bb->loop_father != e2->src->loop_father - && !loop_exit_edge_p (e2->src->loop_father, e2)) + && (!loop_exit_edge_p (e2->src->loop_father, e2) + || flow_loop_nested_p (bb->loop_father, + e2->dest->loop_father))) { /* Since this case is not handled by our special code to thread through a loop header, we must explicitly |