[Bug rtl-optimization/66665] Increment instruction is not propagated into address operand

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66665

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 35881
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35881&action=edit
A patch

This patch fixes -mtune=i686 and -mtune=i586.