This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug target/65369] [5 Regression] nettle test failure on powerpc64le-linux-gnu when built with -O3
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 13 Mar 2015 16:25:24 +0000
- Subject: [Bug target/65369] [5 Regression] nettle test failure on powerpc64le-linux-gnu when built with -O3
- Auto-submitted: auto-generated
- References: <bug-65369-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65369
--- Comment #35 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note to self. This is the case dr_explicit_realign: case of vectorizable_load.
(ptr + 12) & -16L - i.e. vs_minus_1 * TYPE_ALIGN_UNIT (element) is reasonable
for the case where the original stmt data ref is naturally aligned, but in this
case it is an unaligned load and thus we can't use + 12 but should use + 15
instead. This is quite related to PR63341, but that was the
dr_explicit_realign_optimized case, not dr_explicit_realign.