[Bug target/77478] Incorrect code generated with -O3, m32, -msse2 and -ffast-math

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77478

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Sep 27 12:44:42 2016
New Revision: 240532

URL: https://gcc.gnu.org/viewcvs?rev=240532&root=gcc&view=rev
Log:
2016-09-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/77478
        * tree-vect-loop-manip.c (vect_gen_niters_for_prolog_loop):
        Fix alignment of SSA var used before the alignment prologue.

        * gcc.dg/torture/pr77478.c: New testcase.

Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr77478.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/testsuite/ChangeLog
    branches/gcc-5-branch/gcc/tree-vect-loop-manip.c