diff options
| author | Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2017-12-01 15:33:15 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2017-12-01 15:33:15 +0000 |
| commit | f9dcf14aae8f725ed63499d70980eb7029fdd2d5 (patch) | |
| tree | 70d7d52fe173cbc868fd789084b2fd243e717ee9 /libstdc++-v3/include/std/string_view | |
| parent | ccd9a1e0ef6ec521734cabd1262a385234b183e7 (diff) | |
S/390: Split MVC instruction for better forwarding
Certain lengths used in an MVC instruction might disable operand
forwarding. Split MVCs into up to 2 forwardable ones if possible.
gcc/ChangeLog:
2017-12-01 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* config/s390/predicates.md (plus16_Q_operand): New predicate.
* config/s390/s390.md: Disable MVC merging peephole if it would
disable operand forwarding.
(new peephole2): Split MVCs if it would turn them into up to 2
forwardable MVCs.
From-SVN: r255319
Diffstat (limited to 'libstdc++-v3/include/std/string_view')
0 files changed, 0 insertions, 0 deletions