diff options
| author | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-29 17:08:16 +0000 |
|---|---|---|
| committer | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-29 17:08:16 +0000 |
| commit | b6440e3988c72233c07315c5ae9a6ba7ffc12fe8 (patch) | |
| tree | 2a6452fc40b80c08fdbdc1ef264f86f955950998 /gcc/tree-ssa-loop-niter.c | |
| parent | 6453a826cdc81087525aef5e3be4ff190cc82b85 (diff) | |
| download | gcc-b6440e3988c72233c07315c5ae9a6ba7ffc12fe8.tar.gz | |
2010-11-29 Zdenek Dvorak <rakdver@kam.uniff.cz>
PR tree-optimization/46675
* tree-ssa-loop-niter.c (split_to_var_and_offset): Avoid overflow
in offset calculation.
testsuite/ChangeLog:
2010-11-29 Richard Guenther <rguenther@suse.de>
Zdenek Dvorak <rakdver@kam.uniff.cz>
PR tree-optimization/46675
* gcc.dg/pr46675.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167256 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-loop-niter.c')
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index 94d150d8246..466cdae80b7 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -95,10 +95,10 @@ split_to_var_and_offset (tree expr, tree *var, mpz_t offset) *var = op0; /* Always sign extend the offset. */ off = tree_to_double_int (op1); - if (negate) - off = double_int_neg (off); off = double_int_sext (off, TYPE_PRECISION (type)); mpz_set_double_int (offset, off, false); + if (negate) + mpz_neg (offset, offset); break; case INTEGER_CST: |