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| author | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-10-09 12:59:02 +0000 |
|---|---|---|
| committer | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-10-09 12:59:02 +0000 |
| commit | 11ad02c667d0c697c971e810fb30504de359371f (patch) | |
| tree | 8fe48efb934d00e67f7202795323adb3f8a915e2 /gcc/tree-ssa-alias.c | |
| parent | 32e69596af762503c636cdec90567c8d4e30629d (diff) | |
| download | gcc-11ad02c667d0c697c971e810fb30504de359371f.tar.gz | |
PR middle-end/58570
* tree-ssa-alias.c (nonoverlapping_component_refs_of_decl_p): Return
false if both components are bitfields.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203315 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-alias.c')
| -rw-r--r-- | gcc/tree-ssa-alias.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index 0d3c15c447d..4aaa98b11ae 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -803,12 +803,13 @@ nonoverlapping_component_refs_of_decl_p (tree ref1, tree ref2) if (type1 != type2 || TREE_CODE (type1) != RECORD_TYPE) goto may_overlap; - /* Different fields of the same record type cannot overlap. */ + /* Different fields of the same record type cannot overlap. + ??? Bitfields can overlap at RTL level so punt on them. */ if (field1 != field2) { component_refs1.release (); component_refs2.release (); - return true; + return !(DECL_BIT_FIELD (field1) && DECL_BIT_FIELD (field2)); } } |