diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2016-01-27 12:40:04 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2016-01-27 12:40:04 +0100 |
| commit | b1652ddea99943a7a6df4be25e3a35e4eeeeb86d (patch) | |
| tree | bce699e60643f9feadb835a3de8da891519c2eca /gcc/wide-int.h | |
| parent | dfa654c8cf28dc2f85ccb45b85de3ee26edcc580 (diff) | |
| download | gcc-b1652ddea99943a7a6df4be25e3a35e4eeeeb86d.zip gcc-b1652ddea99943a7a6df4be25e3a35e4eeeeb86d.tar.gz gcc-b1652ddea99943a7a6df4be25e3a35e4eeeeb86d.tar.bz2 | |
re PR tree-optimization/69399 (wrong code with -O and int128)
PR tree-optimization/69399
* wide-int.h (wi::lrshift): For larger precisions, only
use fast path if shift is known to be < HOST_BITS_PER_WIDE_INT.
* gcc.dg/torture/pr69399.c: New test.
From-SVN: r232869
Diffstat (limited to 'gcc/wide-int.h')
| -rw-r--r-- | gcc/wide-int.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/wide-int.h b/gcc/wide-int.h index 56cf582..fa133f0 100644 --- a/gcc/wide-int.h +++ b/gcc/wide-int.h @@ -2909,7 +2909,9 @@ wi::lrshift (const T1 &x, const T2 &y) For variable-precision integers like wide_int, handle HWI and sub-HWI integers inline. */ if (STATIC_CONSTANT_P (xi.precision > HOST_BITS_PER_WIDE_INT) - ? xi.len == 1 && xi.val[0] >= 0 + ? (shift < HOST_BITS_PER_WIDE_INT + && xi.len == 1 + && xi.val[0] >= 0) : xi.precision <= HOST_BITS_PER_WIDE_INT) { val[0] = xi.to_uhwi () >> shift; |