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Diffstat (limited to 'gcc/tree-if-conv.c')
| -rw-r--r-- | gcc/tree-if-conv.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gcc/tree-if-conv.c b/gcc/tree-if-conv.c index 9e305c7..a9fbab9 100644 --- a/gcc/tree-if-conv.c +++ b/gcc/tree-if-conv.c @@ -262,6 +262,16 @@ ifc_temp_var (tree type, tree expr, gimple_stmt_iterator *gsi) return new_name; } +/* Return true when COND is a false predicate. */ + +static inline bool +is_false_predicate (tree cond) +{ + return (cond == NULL_TREE + || cond == boolean_false_node + || integer_zerop (cond)); +} + /* Return true when COND is a true predicate. */ static inline bool @@ -1988,7 +1998,7 @@ predicate_mem_writes (loop_p loop) gimple *stmt; int index; - if (is_true_predicate (cond)) + if (is_true_predicate (cond) || is_false_predicate (cond)) continue; swap = false; |