[Bug rtl-optimization/59311] [4.9 Regression] LRA fails to update REG_CFA_SET_VDRAP note

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59311

--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 31313
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31313&action=edit
A patch

I am testing this patch.