[Bug middle-end/91948] [10 Regression] SEGV in reload with r276389

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91948

--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Tue Oct  1 12:55:16 2019
New Revision: 276407

URL: https://gcc.gnu.org/viewcvs?rev=276407&root=gcc&view=rev
Log:
Fix reload after function-abi patches (PR91948)

The code was passing a pseudo rather than its allocated hard reg
to ira_need_caller_save_p.  Running under valgrind to reproduce
the failure also showed that ALLOCNO_CROSSED_CALLS_ABIS wasn't
being explicitly initialised.

2019-10-01  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
        PR rtl-optimization/91948
        * ira-build.c (ira_create_allocno): Initialize
        ALLOCNO_CROSSED_CALLS_ABIS.
        * ira-color.c (allocno_reload_assign): Pass hard_regno rather
        than regno to ira_need_caller_save_p.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira-build.c
    trunk/gcc/ira-color.c