[Bug tree-optimization/56595] Tree-ssa-pre can create loop carried dependencies which prevent loop vectorization.

[ysrumyan at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56595



--- Comment #1 from Yuri Rumyantsev <ysrumyan at gmail dot com> 2013-03-11 
13:38:25 UTC ---

Created attachment 29636

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29636

testcase



This test must be compiled with the following options for x86:



-ffree-line-length-none -m64 -Ofast -march=core-avx-i -mavx