f157c5362b
as dicussed in PR ipa/103454 there are several benchmarks that regresses
for -finline-functions-called once. Runtmes:
- tramp3d with -Ofast. 31%
- exchange2 with -Ofast 11-21%
- roms O2 9%-10%
- tonto 2.5-3.5% with LTO
Build times:
- specfp2006 41% (mostly wrf that builds 71% faster)
- specint2006 1.5-3%
- specfp2017 64% (again mostly wrf)
- specint2017 2.5-3.5%
This patch adds two params to tweak the behaviour:
1) max-inline-functions-called-once-loop-depth limiting the loop depth
(this is useful primarily for exchange where the inlined function is in
loop depth 9)
2) max-inline-functions-called-once-insns
We already have large-function-insns/growth parameters, but these are
limiting also inlining small functions, so reducing them will regress
very large functions that are hot.
Because inlining functions called once is meant just as a cleanup pass
I think it makes sense to have separate limit for it.
gcc/ChangeLog:
2021-12-09 Jan Hubicka <hubicka@ucw.cz>
* doc/invoke.texi (max-inline-functions-called-once-loop-depth,
max-inline-functions-called-once-insns): New parameters.
* ipa-inline.c (check_callers): Handle
param_inline_functions_called_once_loop_depth and
param_inline_functions_called_once_insns.
(edge_badness): Fix linebreaks.
* params.opt (param=max-inline-functions-called-once-loop-depth,
param=max-inline-functions-called-once-insn): New params.
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