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| author | Jakub Jelinek <jakub@redhat.com> | 2017-10-13 19:19:12 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2017-10-13 19:19:12 +0200 |
| commit | e7176f75d6b2dd56059dad5920c770dade79df95 (patch) | |
| tree | 7ac0495b4cd1c60e5a022d19c0de3ce667bdd725 /gcc/fortran/resolve.c | |
| parent | 8de7190350263d381df5c12cfbbfb4191b8d3973 (diff) | |
| download | gcc-e7176f75d6b2dd56059dad5920c770dade79df95.zip gcc-e7176f75d6b2dd56059dad5920c770dade79df95.tar.gz gcc-e7176f75d6b2dd56059dad5920c770dade79df95.tar.bz2 | |
re PR target/82274 (__builtin_mul_overflow fails to detect overflow for int64_t when compiled with -m32)
PR target/82274
* internal-fn.c (expand_mul_overflow): If both operands have
the same highpart of -1 or 0 and the topmost bit of lowpart
is different, overflow is if res <= 0 rather than res < 0.
* libgcc2.c (__mulvDI3): If both operands have
the same highpart of -1 and the topmost bit of lowpart is 0,
multiplication overflows even if both lowparts are 0.
* gcc.dg/pr82274-1.c: New test.
* gcc.dg/pr82274-2.c: New test.
From-SVN: r253734
Diffstat (limited to 'gcc/fortran/resolve.c')
0 files changed, 0 insertions, 0 deletions