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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2021-09-08 13:10:30 +0000 |
|---|---|---|
| committer | Segher Boessenkool <segher@kernel.crashing.org> | 2021-09-08 13:27:56 +0000 |
| commit | 86e6268cff328e27ee6f90e2afc35b6f437a25cd (patch) | |
| tree | c688e92dabb1bb4277f4744909f3fed3e83cd1c0 | |
| parent | 7485a52551d71db2e8bbfc4c484196bcc321a1cd (diff) | |
| download | gcc-86e6268cff328e27ee6f90e2afc35b6f437a25cd.zip gcc-86e6268cff328e27ee6f90e2afc35b6f437a25cd.tar.gz gcc-86e6268cff328e27ee6f90e2afc35b6f437a25cd.tar.bz2 | |
rs6000: Fix ELFv2 r12 use in epilogue
We cannot use r12 here, it is already in use as the GEP (for sibling
calls).
2021-09-08 Segher Boessenkool <segher@kernel.crashing.org>
PR target/102107
* config/rs6000/rs6000-logue.c (rs6000_emit_epilogue): For ELFv2 use
r11 instead of r12 for restoring CR.
| -rw-r--r-- | gcc/config/rs6000/rs6000-logue.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/config/rs6000/rs6000-logue.c b/gcc/config/rs6000/rs6000-logue.c index e363d56..9965a8aa 100644 --- a/gcc/config/rs6000/rs6000-logue.c +++ b/gcc/config/rs6000/rs6000-logue.c @@ -4815,6 +4815,10 @@ rs6000_emit_epilogue (enum epilogue_type epilogue_type) else if (REGNO (frame_reg_rtx) == 12) cr_save_regno = 11; + /* For ELFv2 r12 is already in use as the GEP. */ + if (DEFAULT_ABI == ABI_ELFv2) + cr_save_regno = 11; + cr_save_reg = load_cr_save (cr_save_regno, frame_reg_rtx, info->cr_save_offset + frame_off, exit_func); |