diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-01-11 17:01:37 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-01-11 17:01:37 +0000 |
| commit | 25fe7e3d8b1d614dc09ee33436ada6dcd4047282 (patch) | |
| tree | ad4d13dcea7597523744fdf9b6ed3615f537edce /gcc/tree-ssa.c | |
| parent | 71b657c99fb40c6c0aedb26fe97f9e322154006b (diff) | |
| download | gcc-25fe7e3d8b1d614dc09ee33436ada6dcd4047282.tar.gz | |
2011-01-11 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46076
* tree-ssa.c (useless_type_conversion_p): Conversions from
unprototyped to empty argument list function types are useless.
* gcc.dg/tree-ssa/pr46076.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@168665 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa.c')
| -rw-r--r-- | gcc/tree-ssa.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c index 7bd01f8d4db..aa797e22bec 100644 --- a/gcc/tree-ssa.c +++ b/gcc/tree-ssa.c @@ -1410,6 +1410,11 @@ useless_type_conversion_p (tree outer_type, tree inner_type) if (!prototype_p (outer_type)) return true; + /* A conversion between unprototyped and empty argument list is ok. */ + if (TYPE_ARG_TYPES (outer_type) == void_list_node + && !prototype_p (inner_type)) + return true; + /* If the unqualified argument types are compatible the conversion is useless. */ if (TYPE_ARG_TYPES (outer_type) == TYPE_ARG_TYPES (inner_type)) |