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Change fma_reassoc_width tuning for ampere1
authorDi Zhao OS <dizhao@os.amperecomputing.com>
Thu, 22 Jun 2023 14:16:57 +0000 (15:16 +0100)
committerRichard Sandiford <richard.sandiford@arm.com>
Thu, 22 Jun 2023 14:16:57 +0000 (15:16 +0100)
commit4ced8363622b31910cda61796a28fe2cbf70faa7
tree23ed7a7220f0b712a88e942ab6a2fe2e6d6f67b4tree | snapshot
parent2cd0689a79498dcaaadc8cc5c1c4d0a452a4fb09commit | diff
Change fma_reassoc_width tuning for ampere1

This patch enables reassociation of floating-point additions on ampere1.
This brings about 1% overall benefit on spec2017 fprate cases. (There
are minor regressions in 510.parest_r and 508.namd_r, analyzed here:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110279 .)

gcc/ChangeLog:

* config/aarch64/aarch64.cc: Change fma_reassoc_width for ampere1.
gcc/config/aarch64/aarch64.cc diff | blob | blame | history
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