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| author | Philipp Tomsich <philipp.tomsich@vrull.eu> | 2022-11-07 14:22:21 +0100 |
|---|---|---|
| committer | Philipp Tomsich <philipp.tomsich@vrull.eu> | 2022-11-14 14:52:15 +0100 |
| commit | 590a06afbf0e96813b5879742f38f3665512c854 (patch) | |
| tree | dbd6aaa5db72286dbd4a9eeba1f5e0ac0aeee694 /gcc/doc/invoke.texi | |
| parent | 5ba25973e2f403ee48af2ba579af5017b2f650fb (diff) | |
aarch64: Add support for Ampere-1A (-mcpu=ampere1a) CPU
This patch adds support for Ampere-1A CPU:
- recognize the name of the core and provide detection for -mcpu=native,
- updated extra_costs,
- adds a new fusion pair for (A+B+1 and A-B-1).
Ampere-1A and Ampere-1 have more timing difference than the extra
costs indicate, but these don't propagate through to the headline
items in our extra costs (e.g. the change in latency for scalar sqrt
doesn't have a corresponding table entry).
gcc/ChangeLog:
* config/aarch64/aarch64-cores.def (AARCH64_CORE): Add ampere1a.
* config/aarch64/aarch64-cost-tables.h: Add ampere1a_extra_costs.
* config/aarch64/aarch64-fusion-pairs.def (AARCH64_FUSION_PAIR):
Define a new fusion pair for A+B+1/A-B-1 (i.e., add/subtract two
registers and then +1/-1).
* config/aarch64/aarch64-tune.md: Regenerate.
* config/aarch64/aarch64.cc (aarch_macro_fusion_pair_p): Implement
idiom-matcher for the new fusion pair.
* doc/invoke.texi: Add ampere1a.
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 449df597298..2e4433d9a05 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -19995,7 +19995,7 @@ performance of the code. Permissible values for this option are: @samp{cortex-a75.cortex-a55}, @samp{cortex-a76.cortex-a55}, @samp{cortex-r82}, @samp{cortex-x1}, @samp{cortex-x1c}, @samp{cortex-x2}, @samp{cortex-a510}, @samp{cortex-a710}, @samp{cortex-a715}, @samp{ampere1}, -@samp{native}. +@samp{ampere1a}, and @samp{native}. The values @samp{cortex-a57.cortex-a53}, @samp{cortex-a72.cortex-a53}, @samp{cortex-a73.cortex-a35}, @samp{cortex-a73.cortex-a53}, |