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| author | Richard Biener <rguenther@suse.de> | 2020-04-03 13:46:49 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2020-04-03 15:24:11 +0200 |
| commit | ef6631051d4bb9519f3f0dd5f3b3eadbd67bc10a (patch) | |
| tree | 1121c6c7c9d608e3d6bbcaedc27c2d5e10f0272a /gcc/tree.c | |
| parent | fa4aab7f84061c7253de6c38162f5b71111f5139 (diff) | |
| download | gcc-ef6631051d4bb9519f3f0dd5f3b3eadbd67bc10a.zip gcc-ef6631051d4bb9519f3f0dd5f3b3eadbd67bc10a.tar.gz gcc-ef6631051d4bb9519f3f0dd5f3b3eadbd67bc10a.tar.bz2 | |
middle-end/94465 - handle released SSA names in array_ref_low_bound
array_ref_low_bound is used in dumping ARRAY_REFs which in turn
is called when basic blocks are deleted. cleanup_control_flow_pre
consciously decides to remove unreachable basic-blocks in arbitrary
order so the following makes array_ref_low_bound forgiving in the
case the SSA name with the index definition has been released
already.
2020-04-03 Richard Biener <rguenther@suse.de>
PR middle-end/94465
* tree.c (array_ref_low_bound): Deal with released SSA names
in index position.
Diffstat (limited to 'gcc/tree.c')
| -rw-r--r-- | gcc/tree.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -13426,7 +13426,9 @@ array_ref_low_bound (tree exp) return SUBSTITUTE_PLACEHOLDER_IN_EXPR (TYPE_MIN_VALUE (domain_type), exp); /* Otherwise, return a zero of the appropriate type. */ - return build_int_cst (TREE_TYPE (TREE_OPERAND (exp, 1)), 0); + tree idxtype = TREE_TYPE (TREE_OPERAND (exp, 1)); + return (idxtype == error_mark_node + ? integer_zero_node : build_int_cst (idxtype, 0)); } /* Return a tree representing the upper bound of the array mentioned in |