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* [Bug rtl-optimization/87218] Extremely long compile time with 710 line Fortran code using -O2
[not found] <bug-87218-4@http.gcc.gnu.org/bugzilla/>
@ 2024-02-19 13:16 ` rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2024-02-19 13:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87218
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |10.0
Status|NEW |RESOLVED
Known to fail| |9.5.0
Resolution|--- |FIXED
Known to work| |10.1.0, 13.2.1, 14.0
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Seems to be good now. Trunk at -O2 takes 2.5s for me. -O1 is slower at 18s
with
dead store elim1 : 8.44 ( 47%) 0.00 ( 0%) 8.44 ( 46%)
1991k ( 1%)
combiner : 6.97 ( 39%) 0.00 ( 0%) 6.96 ( 38%)
16M ( 12%)
with -O0 we take 0.5s
Quite likely we optimize this too well now to trigger the original behavior
(but I do remember some cfgleanup compile-time fixes).
-O2 times
11.4: 9s
10.5: 12.7s
9.5: 464s
so fixed for GCC 10.
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2024-02-19 13:16 ` [Bug rtl-optimization/87218] Extremely long compile time with 710 line Fortran code using -O2 rguenth at gcc dot gnu.org
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