[Bug rtl-optimization/50677] volatile forces load into register

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50677

--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
Can we make init_recog_no_volatile processor a target hook so
that it can be disabled for x86?