https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89775
--- Comment #2 from Andreas Krebbel <krebbel at gcc dot gnu.org> --- Author: krebbel Date: Wed Mar 20 15:28:38 2019 New Revision: 269823 URL: https://gcc.gnu.org/viewcvs?rev=269823&root=gcc&view=rev Log: S/390: Fix PR89775. Stackpointer save/restore instructions removed Even if a global register is being clobbered in a function we usually do not save and restore it. However, we still have to do this if it is a special register. Most of the places in the backend handle this correctly but not the prologue/epilogue optimization. gcc/ChangeLog: 2019-03-20 Andreas Krebbel <kreb...@linux.ibm.com> PR target/89775 * config/s390/s390.c (global_not_special_regno_p): Move to make it available to ... (s390_optimize_register_info): Use global_not_special_regno_p to check for global regs. 2019-03-20 Jakub Jelinek <ja...@redhat.com> PR target/89775 * gcc.target/s390/pr89775-1.c: New test. * gcc.target/s390/pr89775-2.c: New test. Added: trunk/gcc/testsuite/gcc.target/s390/pr89775-1.c trunk/gcc/testsuite/gcc.target/s390/pr89775-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/s390/s390.c trunk/gcc/testsuite/ChangeLog
