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| author | Marc Glisse <marc.glisse@inria.fr> | 2013-05-16 12:26:51 +0200 |
|---|---|---|
| committer | Marc Glisse <glisse@gcc.gnu.org> | 2013-05-16 10:26:51 +0000 |
| commit | 43bb4dd14d015211a19ccd8c1802cc7e1361d8b7 (patch) | |
| tree | 9493047601849c95b5770ec075bca0b02745c32d /gcc/fold-const.c | |
| parent | 3571dde6ea6bd573390e1b3e91a646c572b6587e (diff) | |
| download | gcc-43bb4dd14d015211a19ccd8c1802cc7e1361d8b7.zip gcc-43bb4dd14d015211a19ccd8c1802cc7e1361d8b7.tar.gz gcc-43bb4dd14d015211a19ccd8c1802cc7e1361d8b7.tar.bz2 | |
re PR middle-end/57286 (infinite recursion in fold-const.c:10037)
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.
From-SVN: r198964
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 e02f0c6..97b5216 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)) |