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| author | Jakub Jelinek <jakub@redhat.com> | 2022-12-22 12:44:13 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2022-12-22 12:44:13 +0100 |
| commit | 0cb5d7cdbab8e5f8359764ef5f62d93c2bc88552 (patch) | |
| tree | 622e6f49f7d78a8b4ec2c947f53bf04a0783ce9b /gcc/tree-ssa-phiopt.cc | |
| parent | 7b2cf5041460859ca4f58e5da1308b7ef9129d8b (diff) | |
| download | gcc-0cb5d7cdbab8e5f8359764ef5f62d93c2bc88552.zip gcc-0cb5d7cdbab8e5f8359764ef5f62d93c2bc88552.tar.gz gcc-0cb5d7cdbab8e5f8359764ef5f62d93c2bc88552.tar.bz2 | |
cse: Fix up CSE const_anchor handling [PR108193]
The following testcase ICEs on aarch64, because insert_const_anchor
inserts invalid CONST_INT into the CSE tables - 0x80000000 for SImode.
The second hunk of the patch fixes that, the first one is to avoid
triggering undefined behavior at compile time during compute_const_anchors
computations - performing those additions and subtractions in
HOST_WIDE_INT means it can overflow for certain constants.
2022-12-22 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/108193
* cse.cc (compute_const_anchors): Change n type to
unsigned HOST_WIDE_INT, adjust comparison against it to avoid
warnings. Formatting fix.
(insert_const_anchor): Use gen_int_mode instead of GEN_INT.
* gfortran.dg/pr108193.f90: New test.
Diffstat (limited to 'gcc/tree-ssa-phiopt.cc')
0 files changed, 0 insertions, 0 deletions