diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-04-17 08:13:53 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-04-17 08:13:53 +0000 |
| commit | f540a052e5975baa8244237055382de88ba3fadb (patch) | |
| tree | 68de519b6f715ed1c48ce0e8e44214180f6db8f2 /gcc/tree-ssa-propagate.c | |
| parent | aae8f54360718d5d70e336db02c183847c98c3ac (diff) | |
| download | gcc-f540a052e5975baa8244237055382de88ba3fadb.tar.gz | |
2014-04-17 Richard Biener <rguenther@suse.de>
PR middle-end/60849
* tree-ssa-propagate.c (valid_gimple_rhs_p): Only allow effective
boolean results for comparisons.
* g++.dg/opt/pr60849.C: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@209469 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-propagate.c')
| -rw-r--r-- | gcc/tree-ssa-propagate.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/tree-ssa-propagate.c b/gcc/tree-ssa-propagate.c index 840d7e76272..47fd15455b2 100644 --- a/gcc/tree-ssa-propagate.c +++ b/gcc/tree-ssa-propagate.c @@ -571,8 +571,14 @@ valid_gimple_rhs_p (tree expr) /* All constants are ok. */ break; - case tcc_binary: case tcc_comparison: + if (!INTEGRAL_TYPE_P (TREE_TYPE (expr)) + || (TREE_CODE (TREE_TYPE (expr)) != BOOLEAN_TYPE + && TYPE_PRECISION (TREE_TYPE (expr)) != 1)) + return false; + + /* Fallthru. */ + case tcc_binary: if (!is_gimple_val (TREE_OPERAND (expr, 0)) || !is_gimple_val (TREE_OPERAND (expr, 1))) return false; |