diff options
| author | glisse <glisse@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-05-16 10:26:51 +0000 |
|---|---|---|
| committer | glisse <glisse@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-05-16 10:26:51 +0000 |
| commit | ea1b629e1679f508df9743680ac0eb3985ef48b5 (patch) | |
| tree | 9493047601849c95b5770ec075bca0b02745c32d /gcc/fold-const.c | |
| parent | d70b714028b62982297ee5ebf8bfe6a572dc7fa3 (diff) | |
| download | gcc-ea1b629e1679f508df9743680ac0eb3985ef48b5.tar.gz | |
2013-05-16 Marc Glisse <marc.glisse@inria.fr>
PR middle-end/57286
gcc/
* fold-const.c (fold_ternary_loc) <VEC_COND_EXPR>: Disable some
transformations to avoid an infinite loop.
gcc/testsuite/
* gcc.dg/pr57286.c: New testcase.
* gcc.dg/vector-shift-2.c: Don't assume int has size 4.
* g++.dg/ext/vector22.C: Comment out transformations not
performed anymore.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@198964 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index e02f0c60d9a..97b5216eb71 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -14211,6 +14211,12 @@ fold_ternary_loc (location_t loc, enum tree_code code, tree type, fold_convert_loc (loc, type, TREE_OPERAND (arg0, 0))); + /* Disable the transformations below for vectors, since + fold_binary_op_with_conditional_arg may undo them immediately, + yielding an infinite loop. */ + if (code == VEC_COND_EXPR) + return NULL_TREE; + /* Convert A ? B : 0 into A && B if A and B are truth values. */ if (integer_zerop (op2) && truth_value_p (TREE_CODE (arg0)) |