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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2018-09-06 07:38:42 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2018-09-06 07:38:42 +0000 |
| commit | bdb57bcb548f493107d0701a88da0cdcfa122e24 (patch) | |
| tree | 00482d32624436f3e7a7d7285ed9b6bb98de6bf8 /gcc/reg-stack.c | |
| parent | d7252499463a4fe2c073d8a28c6c0c966e20755f (diff) | |
| download | gcc-bdb57bcb548f493107d0701a88da0cdcfa122e24.zip gcc-bdb57bcb548f493107d0701a88da0cdcfa122e24.tar.gz gcc-bdb57bcb548f493107d0701a88da0cdcfa122e24.tar.bz2 | |
S/390: Prohibit SYMBOL_REF in UNSPECV_CAS
Inhibit constant propagation inlining SYMBOL_REF loads into
UNSPECV_CAS. Even though reload can later undo it, the resulting
code will be less efficient.
gcc/ChangeLog:
2018-09-06 Ilya Leoshkevich <iii@linux.ibm.com>
PR target/80080
* config/s390/predicates.md: Add nonsym_memory_operand.
* config/s390/s390.c (s390_legitimize_cs_operand): If operand
contains a SYMBOL_REF, load it into an intermediate pseudo.
(s390_emit_compare_and_swap): Legitimize operand.
* config/s390/s390.md: Use the new nonsym_memory_operand
with UNSPECV_CAS patterns.
gcc/testsuite/ChangeLog:
2018-09-06 Ilya Leoshkevich <iii@linux.ibm.com>
PR target/80080
* gcc.target/s390/pr80080-3.c: New test.
* gcc.target/s390/s390.exp: Make sure the new test passes
on all optimization levels.
From-SVN: r264143
Diffstat (limited to 'gcc/reg-stack.c')
0 files changed, 0 insertions, 0 deletions