[Bug tree-optimization/56157] [4.8 Regression] ICE with -ftree-vectorize in in compute_live_loop_exits

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56157

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-31 09:05:24 UTC ---
Seems that SVN revision just turned a silent miscompilation into an ICE.
In r190283 the vectorizer generated:
  vect_cst_.56_200 = { 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535
};
  vect_cst_.58_205 = {D.1740_224(D), D.1746_225(D), D.1752_226(D),
D.1758_227(D)};
  vect_cst_.59_206 = { 2155905153, 2155905153, 2155905153, 2155905153 };
before the loop, while D.17{40,46,52,58} were all initialized inside of the
loop.