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[Bug c/50444] -ftree-isa ignores alignment
- From: "rguenther at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 27 Sep 2011 08:52:06 +0000
- Subject: [Bug c/50444] -ftree-isa ignores alignment
- Auto-submitted: auto-generated
- References: <bug-50444-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50444
--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> 2011-09-27 08:52:06 UTC ---
On Mon, 26 Sep 2011, hjl.tools at gmail dot com wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50444
>
> H.J. Lu <hjl.tools at gmail dot com> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |jamborm at gcc dot gnu.org
> Summary|unaligned movdqa |-ftree-isa ignores
> |instruction after inlining |alignment
>
> --- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2011-09-26 17:39:41 UTC ---
> -ftree-isa ignores alignment and generates:
>
>
> SR.11_17 = SR.10_18;
> MEM[(struct Engine *)e_1(D) + 40B].m = SR.11_17;
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> This is wrong.
Ah, so we now have the SSE testcase ;)