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| author | H.J. Lu <hongjiu.lu@intel.com> | 2018-10-18 08:18:42 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2018-10-18 01:18:42 -0700 |
| commit | 294973a49751a7fc2d6a7a9f2749ce851a368c04 (patch) | |
| tree | 3a5176da419a68ba632eb29ab9f43065afcc053e /gcc/tree-chrec.c | |
| parent | 7702ab653a903d5131bf72244ae22424ffd2e6c7 (diff) | |
| download | gcc-294973a49751a7fc2d6a7a9f2749ce851a368c04.zip gcc-294973a49751a7fc2d6a7a9f2749ce851a368c04.tar.gz gcc-294973a49751a7fc2d6a7a9f2749ce851a368c04.tar.bz2 | |
Simplify subreg of vec_merge of vec_duplicate
We can simplify
(subreg (vec_merge (vec_duplicate X)
(vector)
(const_int ((1 << N) | M)))
(N * sizeof (X)))
to X when mode of X is the same as of mode of subreg.
gcc/
PR target/87537
* simplify-rtx.c (simplify_subreg): Simplify subreg of vec_merge
of vec_duplicate.
(test_vector_ops_duplicate): Add test for a scalar subreg of a
VEC_MERGE of a VEC_DUPLICATE.
gcc/testsuite/
PR target/87537
* gcc.target/i386/pr87537-1.c: New test.
From-SVN: r265260
Diffstat (limited to 'gcc/tree-chrec.c')
0 files changed, 0 insertions, 0 deletions