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| author | Marc Glisse <marc.glisse@inria.fr> | 2019-07-10 17:16:12 +0200 |
|---|---|---|
| committer | Marc Glisse <glisse@gcc.gnu.org> | 2019-07-10 15:16:12 +0000 |
| commit | 12bb04368e7fcbdd8d3744a440eee23c9293958f (patch) | |
| tree | d42462664d0531c8c7ebf8a561cb119e81ce2946 | |
| parent | 95efa2279195e2b86afc986fd6e917c2704575d0 (diff) | |
| download | gcc-12bb04368e7fcbdd8d3744a440eee23c9293958f.zip gcc-12bb04368e7fcbdd8d3744a440eee23c9293958f.tar.gz gcc-12bb04368e7fcbdd8d3744a440eee23c9293958f.tar.bz2 | |
Fix wi::lshift
2019-07-10 Marc Glisse <marc.glisse@inria.fr>
* wide-int.h (wi::lshift): Reject negative values for the fast path.
From-SVN: r273356
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/wide-int.h | 3 |
2 files changed, 5 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9b32482..f109a8c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2019-07-10 Marc Glisse <marc.glisse@inria.fr> + + * wide-int.h (wi::lshift): Reject negative values for the fast path. + 2019-07-10 Richard Biener <rguenther@suse.de> PR tree-optimization/91126 diff --git a/gcc/wide-int.h b/gcc/wide-int.h index bb8ced1..6c816cc 100644 --- a/gcc/wide-int.h +++ b/gcc/wide-int.h @@ -3034,8 +3034,7 @@ wi::lshift (const T1 &x, const T2 &y) if (STATIC_CONSTANT_P (xi.precision > HOST_BITS_PER_WIDE_INT) ? (STATIC_CONSTANT_P (shift < HOST_BITS_PER_WIDE_INT - 1) && xi.len == 1 - && xi.val[0] <= (HOST_WIDE_INT) ((unsigned HOST_WIDE_INT) - HOST_WIDE_INT_MAX >> shift)) + && IN_RANGE (xi.val[0], 0, HOST_WIDE_INT_MAX >> shift)) : precision <= HOST_BITS_PER_WIDE_INT) { val[0] = xi.ulow () << shift; |