[Bug target/84064] ICE in ix86_expand_prologue related to -fstack-clash-protection and memcpy on i686

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84064

--- Comment #4 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Wed Jan 31 05:02:30 2018
New Revision: 257217

URL: https://gcc.gnu.org/viewcvs?rev=257217&root=gcc&view=rev
Log:
        PR target/84064
        * i386.c (ix86_adjust_stack_and_probe_stack_clash): New argument
        INT_REGISTERS_SAVED.  Check it prior to calling
        get_scratch_register_on_entry.
        (ix86_adjust_stack_and_probe): Similarly.
        (ix86_emit_probe_stack_range): Similarly.
        (ix86_expand_prologue): Corresponding changes.

        PR target/84064
        * gcc.target/i386/pr84064: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr84064.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog