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| author | Richard Biener <rguenther@suse.de> | 2020-11-11 18:15:57 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2020-11-11 18:17:00 +0100 |
| commit | 2e8b368c3d33fd8ddafdd37f8e1b2ba45d1a122e (patch) | |
| tree | 3f77d96116884ad4ba8757bea45ea7369aa2a85e /gcc/tree-ssa-pre.c | |
| parent | 505ea90904436e6477f24c8d9775762ca4b29e7b (diff) | |
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Fix PRE NEW_SETS guarding
Accesses to NEW_SETS should be properly guarded. Committed
as obvious.
2020-11-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/97623
* tree-ssa-pre.c (create_expression_by_pieces): Guard
NEW_SETS access.
(insert_into_preds_of_block): Likewise.
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 6dea8c2..10d223b 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -3064,7 +3064,8 @@ create_expression_by_pieces (basic_block block, pre_expr expr, vn_info->value_id = get_next_value_id (); nameexpr = get_or_alloc_expr_for_name (forcedname); add_to_value (vn_info->value_id, nameexpr); - bitmap_value_replace_in_set (NEW_SETS (block), nameexpr); + if (NEW_SETS (block)) + bitmap_value_replace_in_set (NEW_SETS (block), nameexpr); bitmap_value_replace_in_set (AVAIL_OUT (block), nameexpr); } @@ -3231,8 +3232,8 @@ insert_into_preds_of_block (basic_block block, unsigned int exprnum, bitmap_insert_into_set (PHI_GEN (block), newphi); bitmap_value_replace_in_set (AVAIL_OUT (block), newphi); - bitmap_insert_into_set (NEW_SETS (block), - newphi); + if (NEW_SETS (block)) + bitmap_insert_into_set (NEW_SETS (block), newphi); /* If we insert a PHI node for a conversion of another PHI node in the same basic-block try to preserve range information. |