https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109491
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org
--- Comment #17 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
With a cross on znver3 machine I get with ./xgcc -B ./ -mcpu=power8 -std=c++14
-O2 tt.cc --verbose -Q :
phase opt and generate : 13.19 ( 99%) 0.35 ( 95%) 13.53 ( 99%)
408M ( 94%)
callgraph functions expansion : 10.19 ( 77%) 0.15 ( 41%) 10.33 ( 76%)
193M ( 45%)
callgraph ipa passes : 2.97 ( 22%) 0.20 ( 54%) 3.17 ( 23%)
203M ( 47%)
df live regs : 0.65 ( 5%) 0.00 ( 0%) 0.62 ( 5%)
0 ( 0%)
alias stmt walking : 1.19 ( 9%) 0.03 ( 8%) 1.25 ( 9%)
6915k ( 2%)
tree Early VRP : 0.63 ( 5%) 0.01 ( 3%) 0.58 ( 4%)
16M ( 4%)
PRE : 2.81 ( 21%) 0.01 ( 3%) 2.83 ( 21%)
349k ( 0%)
scheduling : 1.00 ( 8%) 0.00 ( 0%) 0.99 ( 7%)
1997k ( 0%)
inliner is:
ipa inlining heuristics : 0.49 ( 4%) 0.00 ( 0%) 0.47 ( 3%)
4429k ( 1%)
integration : 0.19 ( 1%) 0.04 ( 11%) 0.28 ( 2%)
117M ( 27%)
So inlining itself seems to be in control.
With RTL SSA we may be able to replace RTL PRE with GVN-PRE :)
