[Bug tree-optimization/63464] compare one character to many: faster

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63464

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 33724
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33724&action=edit
gcc5-pr63464.patch

Untested patch.