[Bug testsuite/78529] gcc.c-torture/execute/builtins/strcat-chk.c failed with lto/O2

[wilco at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78529

--- Comment #43 from Wilco <wilco at gcc dot gnu.org> ---
Author: wilco
Date: Fri Jul 12 17:15:13 2019
New Revision: 273453

URL: https://gcc.gnu.org/viewcvs?rev=273453&root=gcc&view=rev
Log:
Turn off ipa-ra in builtins test (PR91059)

The gcc.c-torture/execute/builtins/lib directory contains a reimplementation
of many C library string functions, which causes non-trivial register
allocation
bugs with LTO and static linked libraries.  To fix this long-standing test
issue,
turn off ipa-ra which avoids the register corruption across calls.  All builtin
torture tests now pass on aarch64-none-elf.  Committed as obvious.
See PR78529 for more details.

    testsuite/
        PR testsuite/78529
        * gcc.c-torture/execute/builtins/builtins.exp: Add -fno-ipa-ra.

Modified:
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
   
branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/execute/builtins/builtins.exp