[Bug target/71281] [7 Regression] ICE on gcc trunk on knl, wsm, ivb and bdw targets (tree-ssa-reassoc)

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71281

--- Comment #5 from kugan at gcc dot gnu.org ---
Created attachment 38640
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38640&action=edit
proposed patch

testing this patch.