diff options
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 0ec3d3c..eaadaad 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -837,7 +837,7 @@ bitmap_set_and (bitmap_set_t dest, bitmap_set_t orig) } } -/* Subtract all values and expressions contained in ORIG from DEST. */ +/* Subtract all expressions contained in ORIG from DEST. */ static bitmap_set_t bitmap_set_subtract (bitmap_set_t dest, bitmap_set_t orig) @@ -859,7 +859,7 @@ bitmap_set_subtract (bitmap_set_t dest, bitmap_set_t orig) return result; } -/* Subtract all the values in bitmap set B from bitmap set A. */ +/* Subtract all values in bitmap set B from bitmap set A. */ static void bitmap_set_subtract_values (bitmap_set_t a, bitmap_set_t b) @@ -987,6 +987,11 @@ bitmap_value_insert_into_set (bitmap_set_t set, pre_expr expr) static void print_pre_expr (FILE *outfile, const pre_expr expr) { + if (! expr) + { + fprintf (outfile, "NULL"); + return; + } switch (expr->kind) { case CONSTANT: @@ -2418,7 +2423,9 @@ compute_antic (void) inverted_post_order_compute (&postorder); auto_sbitmap worklist (last_basic_block_for_fn (cfun) + 1); - bitmap_ones (worklist); + bitmap_clear (worklist); + FOR_EACH_EDGE (e, ei, EXIT_BLOCK_PTR_FOR_FN (cfun)->preds) + bitmap_set_bit (worklist, e->src->index); while (changed) { if (dump_file && (dump_flags & TDF_DETAILS)) |