https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79416
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |hubicka at gcc dot gnu.org
--- Comment #4 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
With trunk I get:
phase opt and generate : 82.04 (100%) 25.20 (100%) 107.23 (100%)
15103M (100%)
callgraph ipa passes : 78.81 ( 96%) 24.72 ( 98%) 103.53 ( 96%)
15021M ( 99%)
integration : 32.50 ( 40%) 8.29 ( 33%) 40.44 ( 38%)
10311M ( 68%)
tree Early VRP : 4.28 ( 5%) 0.04 ( 0%) 4.13 ( 4%)
1154k ( 0%)
tree operand scan : 13.42 ( 16%) 4.64 ( 18%) 18.23 ( 17%)
1409M ( 9%)
remove unused locals : 6.16 ( 8%) 0.07 ( 0%) 6.12 ( 6%)
0 ( 0%)
13% of overall runtime is ggc_internal_alloc.
I wonder why early VRP become expensive. Also remove unused locals could be
quite likely tamed down - we run it many times and perhaps we can keep tract of
changes.
