[Bug tree-optimization/109491] [11/12 Regression] Segfault in tree-ssa-sccvn.cc:expressions_equal_p()

["hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109491

Jan Hubicka <hubicka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 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 :)