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| author | Jakub Jelinek <jakub@redhat.com> | 2022-03-23 10:29:37 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2022-03-23 10:29:37 +0100 |
| commit | 4a9e92164a547afcf8cd3fc593c7660238ad2d59 (patch) | |
| tree | 6903a24b602e7dac85bef0f590fffb7e89ed89a0 /gcc/fold-const.cc | |
| parent | 1002a7ace111d746249fdea71af9b8e039cea0eb (diff) | |
| download | gcc-4a9e92164a547afcf8cd3fc593c7660238ad2d59.zip gcc-4a9e92164a547afcf8cd3fc593c7660238ad2d59.tar.gz gcc-4a9e92164a547afcf8cd3fc593c7660238ad2d59.tar.bz2 | |
testsuite: Fix up sse2-v1ti-shift-3.c test [PR102986]
This test is dg-do run and invokes UB when these rotate functions
are called with 0 as second argument. There are some other tests
that do this but they are dg-do compile only and not even call those
functions at all, so it IMHO doesn't matter that they are only well
defined for [1,127] and not [0,127].
The following patch fixes it, we pattern recognize both forms as rotates
and we emit identical assembly.
2022-03-23 Jakub Jelinek <jakub@redhat.com>
PR target/102986
* gcc.target/i386/sse2-v1ti-shift-3.c (rotr_v1ti, rotl_v1ti, rotr_ti,
rotl_ti): Use -i&127 instead of 128-i to avoid UB on i == 0.
Diffstat (limited to 'gcc/fold-const.cc')
0 files changed, 0 insertions, 0 deletions