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author | Michael Meissner <meissner@linux.ibm.com> | 2022-08-05 18:54:33 -0400 |
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committer | Michael Meissner <meissner@linux.ibm.com> | 2022-08-05 18:54:33 -0400 |
commit | 25b11619a83f424073aca93422c832b1ac4756fb (patch) | |
tree | 968a5c91d56cffddd02b0febea418c3c7740f17e /libstdc++-v3 | |
parent | 61076545cb3c3cbc79036eff8bc46b0c2083730c (diff) |
Do not enable -mblock-ops-vector-pair.
Testing has shown that using the load vector pair and store vector pair
instructions for block moves has some performance issues on power10.
A patch on June 11th modified the code so that GCC would not set
-mblock-ops-vector-pair by default if we are tuning for power10, but it would
set the option if we were tuning for a different machine and have load and store
vector pair instructions enabled.
This patch eliminates the code setting -mblock-ops-vector-pair. If you want to
generate load vector pair and store vector pair instructions for block moves,
you must use -mblock-ops-vector-pair.
2022-08-05 Michael Meissner <meissner@linux.ibm.com>
gcc/
* config/rs6000/rs6000.cc (rs6000_option_override_internal): Remove code
setting -mblock-ops-vector-pair. Back port patch from trunk on 8/3.
Diffstat (limited to 'libstdc++-v3')
0 files changed, 0 insertions, 0 deletions