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Diffstat (limited to 'gcc/tree-scalar-evolution.c')
| -rw-r--r-- | gcc/tree-scalar-evolution.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/tree-scalar-evolution.c b/gcc/tree-scalar-evolution.c index 6fcfaa4..22ca912 100644 --- a/gcc/tree-scalar-evolution.c +++ b/gcc/tree-scalar-evolution.c @@ -2802,7 +2802,11 @@ scev_const_prop (void) def = analyze_scalar_evolution_in_loop (ex_loop, loop, def, NULL); def = compute_overall_effect_of_inner_loop (ex_loop, def); if (!tree_does_not_contain_chrecs (def) - || chrec_contains_symbols_defined_in_loop (def, ex_loop->num)) + || chrec_contains_symbols_defined_in_loop (def, ex_loop->num) + /* Moving the computation from the loop may prolong life range + of some ssa names, which may cause problems if they appear + on abnormal edges. */ + || contains_abnormal_ssa_name_p (def)) continue; /* Eliminate the phi node and replace it by a computation outside |