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| author | David Malcolm <dmalcolm@redhat.com> | 2022-12-01 21:28:55 -0500 |
|---|---|---|
| committer | David Malcolm <dmalcolm@redhat.com> | 2022-12-01 21:28:55 -0500 |
| commit | 0b737090a69624dea5318c380620283f0321a92e (patch) | |
| tree | 1819faafd6a9e0b3e79c6028385bfa1c11efd738 /gcc/tree-ssa-loop-unswitch.cc | |
| parent | 5cb7d28dcfb11a2810db55b0bbd71fe562bdc2a3 (diff) | |
| download | gcc-0b737090a69624dea5318c380620283f0321a92e.zip gcc-0b737090a69624dea5318c380620283f0321a92e.tar.gz gcc-0b737090a69624dea5318c380620283f0321a92e.tar.bz2 | |
analyzer: handle comparisons against negated symbolic values [PR107948]
gcc/analyzer/ChangeLog:
PR analyzer/107948
* region-model-manager.cc
(region_model_manager::maybe_fold_binop): Fold (0 - VAL) to -VAL.
* region-model.cc (region_model::eval_condition): Handle e.g.
"-X <= 0" as equivalent to X >= 0".
gcc/testsuite/ChangeLog:
PR analyzer/107948
* gcc.dg/analyzer/feasibility-pr107948.c: New test.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
Diffstat (limited to 'gcc/tree-ssa-loop-unswitch.cc')
0 files changed, 0 insertions, 0 deletions