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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
Date: Fri, 16 Jan 2015 08:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743

--- Comment #16 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 15 Jan 2015, jakub at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743
> 
> Jakub Jelinek <jakub at gcc dot gnu.org> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |jakub at gcc dot gnu.org
> 
> --- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> The testcases fail on x86_64 with -m32:
> grep 'loop with . iterations completely unrolled' pr61743-1.c.128t.cunroll 
> pr61743-1.c:25:5: note: loop with 8 iterations completely unrolled
> pr61743-1.c:16:5: note: loop with 8 iterations completely unrolled
> pr61743-1.c:16:5: note: loop with 3 iterations completely unrolled
> pr61743-1.c:29:5: note: loop with 2 iterations completely unrolled
> pr61743-1.c:24:3: note: loop with 4 iterations completely unrolled
> grep 'loop with . iterations completely unrolled' pr61743-2.c.128t.cunroll 
> pr61743-2.c:25:5: note: loop with 8 iterations completely unrolled
> pr61743-2.c:16:5: note: loop with 8 iterations completely unrolled
> pr61743-2.c:16:5: note: loop with 3 iterations completely unrolled
> pr61743-2.c:29:5: note: loop with 2 iterations completely unrolled
> pr61743-2.c:24:3: note: loop with 4 iterations completely unrolled
> (latest trunk).  With -m64 they work fine.

Huh, it passed for me ontop of r219648.  Let me re-check.