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| author | Jan Hubicka <hubicka@ucw.cz> | 2019-06-13 23:56:37 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2019-06-13 21:56:37 +0000 |
| commit | a873b76f0ef06b7c75d17079fb5fd3da70daa068 (patch) | |
| tree | 2c9fc2c2427ca5f755a6ad3823ae4c2c30ba7bff /gcc | |
| parent | d7a290758bc85b19e077264678c8ff795491f706 (diff) | |
| download | gcc-a873b76f0ef06b7c75d17079fb5fd3da70daa068.zip gcc-a873b76f0ef06b7c75d17079fb5fd3da70daa068.tar.gz gcc-a873b76f0ef06b7c75d17079fb5fd3da70daa068.tar.bz2 | |
re PR bootstrap/90873 (-Wmaybe-uninitialized warning in gcc/tree-ssa-forwprop.c breaks 32-bit bootstrap)
PR bootstrap/90873
* tree-ssa-alias.c (indirect_ref_may_alias_decl_p): Also check that
dbase is not TARGET_MEM_REF.
From-SVN: r272273
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-ssa-alias.c | 4 |
2 files changed, 9 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9632a15..09e05e6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2019-06-13 Jan Hubicka <hubicka@ucw.cz> + + PR bootstrap/90873 + * tree-ssa-alias.c (indirect_ref_may_alias_decl_p): Also check that + dbase is not TARGET_MEM_REF. + 2019-06-13 Uroš Bizjak <ubizjak@gmail.com> * config/i386/i386.md (SWIM1248s): Rename from SWIM1248x. diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index 2d2b3b8..8209b0d 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -1393,8 +1393,10 @@ indirect_ref_may_alias_decl_p (tree ref1 ATTRIBUTE_UNUSED, tree base1, But avoid treating variable length arrays as "objects", instead assume they can overlap by an exact multiple of their element size. See gcc.dg/torture/alias-2.c. */ - if ((TREE_CODE (base1) != TARGET_MEM_REF + if (((TREE_CODE (base1) != TARGET_MEM_REF || (!TMR_INDEX (base1) && !TMR_INDEX2 (base1))) + && (TREE_CODE (dbase2) != TARGET_MEM_REF + || (!TMR_INDEX (dbase2) && !TMR_INDEX2 (base2)))) && same_type_for_tbaa (TREE_TYPE (base1), TREE_TYPE (dbase2)) == 1 && (TREE_CODE (TREE_TYPE (base1)) != ARRAY_TYPE || (TYPE_SIZE (TREE_TYPE (base1)) |