[Bug rtl-optimization/93061] New: Optimising for size -Os causes segfault with AES-NI reference

[mutex at fastmail dot co.uk]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93061

            Bug ID: 93061
           Summary: Optimising for size -Os causes segfault with AES-NI
                    reference
           Product: gcc
           Version: 5.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mutex at fastmail dot co.uk
  Target Milestone: ---

Created attachment 47544
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47544&action=edit
Example code that causes bug.

The function AES_256_Key_Expansion from the reference AES-NI causes a segfault
(on Ubuntu 16.10) when gcc -Os optimisation is used.