https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84402
Andrew Carlotti <andrew.carlotti at arm dot com> changed:
What |Removed |Added
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CC| |andrew.carlotti at arm dot com
--- Comment #58 from Andrew Carlotti <andrew.carlotti at arm dot com> ---
Since November 2021, there's been a significant regression in the compile time
for gimple-match.cc during a bootstrap build (+100% in Stage 2, +73% in Stage
3), with this regression accounting for over 20% of the current total bootstrap
time on some aarch64 machines.
Most of the change in compile time is due to the following 6 commits (of which
one is a performance improvement, and one only regressed the Stage 2 build):
7df89377a7ae3906255e38a79be8e5d962c3a0df 24th November 2021
Enhance optimize_atomic_bit_test_and to handle truncation. (Hongtao Liu)
Stage 2: +27%
Stage 3: +33%
9a53101caadae1b5c8d791d247b05268ee4f7f92 16th May 2022
Add MIN/MAX folding from fold_cond_expr_with_comparison to match.pd (Richard
Biener)
Stage 2: +15%
Stage 3: +15%
409978d58dafa689c5b3f85013e2786526160f2c 9th August 2022
tree-optimization/106514 - add --param max-jump-thread-paths (Richard Biener)
Stage 2: -7%
Stage 3: -10%
011d0a033ab370ea38b06b813ac62be8dde0801b 18th August 2022
Make path_range_query standalone and add reset_path. (Aldy Hernandez)
Stage 2: +5%
Stage 3: +0%
4d9db4bdd458a4b526f59e4bc5bbd549d3861cea 12th December 2022
middle-end: simplify complex if expressions where comparisons are inverse of
one another. (Tamar Christina)
Stage 2: +10%
Stage 3: +9%
733a1b777f16cd397b43a242d9c31761f66d3da8 13th January 2023
sched-deps: do not schedule pseudos across calls [PR108117] (Alexander Monakov)
Stage 2: +14%
Stage 3: +9%
