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| author | Alan Lawrence <alan.lawrence@arm.com> | 2014-05-02 15:11:04 +0000 |
|---|---|---|
| committer | Alan Lawrence <alalaw01@gcc.gnu.org> | 2014-05-02 15:11:04 +0000 |
| commit | 0696116a28a8507e59700b78a827217f1db6a43f (patch) | |
| tree | 08a9a7d0ba387e43f3343649b328c0c65b089598 /gcc | |
| parent | fb90f9f3aeccc0cb3178e3179c8ef08ec5941cdd (diff) | |
| download | gcc-0696116a28a8507e59700b78a827217f1db6a43f.zip gcc-0696116a28a8507e59700b78a827217f1db6a43f.tar.gz gcc-0696116a28a8507e59700b78a827217f1db6a43f.tar.bz2 | |
One-line tidy of bit-twiddle expression in aarch64.c
* config/aarch64/aarch64.c (aarch64_expand_vec_perm_1): Tidy bit-flip
expression.
From-SVN: r210005
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.c | 3 |
2 files changed, 7 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 817fb26..69342eb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2014-05-02 Alan Lawrence <alan.lawrence@arm.com> + + * config/aarch64/aarch64.c (aarch64_expand_vec_perm_1): Tidy bit-flip + expression. + 2014-05-02 Marek Polacek <polacek@redhat.com> * doc/invoke.texi: Describe -fsanitize=float-divide-by-zero. diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 94e05bb..8655f04 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -8180,8 +8180,9 @@ aarch64_expand_vec_perm_const_1 (struct expand_vec_perm_d *d) unsigned i, nelt = d->nelt; rtx x; + gcc_assert (nelt == (nelt & -nelt)); for (i = 0; i < nelt; ++i) - d->perm[i] = (d->perm[i] + nelt) & (2 * nelt - 1); + d->perm[i] ^= nelt; /* Keep the same index, but in the other vector. */ x = d->op0; d->op0 = d->op1; |