[Bug target/77904] [ARM Cortex-M0] Frame pointer thrashes registers if assembly statements with "sp" clobber are used

[thopre01 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77904

--- Comment #5 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
Author: thopre01
Date: Tue Nov 22 10:44:29 2016
New Revision: 242693

URL: https://gcc.gnu.org/viewcvs?rev=242693&root=gcc&view=rev
Log:
2016-11-22  Thomas Preud'homme  <thomas.preudho...@arm.com>

    gcc/
    PR target/77904
    * config/arm/arm.c (thumb1_compute_save_reg_mask): Mark frame pointer
    in save register mask if it is needed.

    gcc/testsuite/
    PR target/77904
    * gcc.target/arm/pr77904.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/arm/pr77904.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/arm/arm.c
    trunk/gcc/testsuite/ChangeLog