https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89952
--- Comment #2 from Andreas Krebbel <krebbel at gcc dot gnu.org> --- Author: krebbel Date: Wed Apr 24 13:40:38 2019 New Revision: 270544 URL: https://gcc.gnu.org/viewcvs?rev=270544&root=gcc&view=rev Log: S/390: Fix PR89952 incorrect CFI This patch fixes a cases where inconsistent CFI is generated. After restoring the hard frame pointer (r11) from an FPR we have to set the CFA register. In order to be able to set it back to the stack pointer (r15) we have to make sure that r15 has been restored already. The patch also adds a scheduler dependency to prevent the instruction scheduler from swapping the r11 and r15 restore again. gcc/ChangeLog: 2019-04-24 Andreas Krebbel <kreb...@linux.ibm.com> PR target/89952 * config/s390/s390.c (s390_restore_gprs_from_fprs): Restore GPRs from FPRs in reverse order. Generate REG_CFA_DEF_CFA note also for restored hard frame pointer. (s390_sched_dependencies_evaluation): Implement new target hook. (TARGET_SCHED_DEPENDENCIES_EVALUATION_HOOK): New macro definition. gcc/testsuite/ChangeLog: 2019-04-24 Andreas Krebbel <kreb...@linux.ibm.com> PR target/89952 * gcc.target/s390/pr89952.c: New test. Added: trunk/gcc/testsuite/gcc.target/s390/pr89952.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/s390/s390.c trunk/gcc/testsuite/ChangeLog
