[Bug rtl-optimization/80112] [5/6 Regression] ICE in doloop_condition_get at loop-doloop.c:158

[zhroma at ispras dot ru]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80112

Roman Zhuykov <zhroma at ispras dot ru> changed:

           What    |Removed                     |Added
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                 CC|                            |zhroma at ispras dot ru

--- Comment #5 from Roman Zhuykov <zhroma at ispras dot ru> ---
Created attachment 41049
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41049&action=edit
maybe more proper fix

6 years ago I was solving issue with same code lines and with Richard
Sandiford's help found a bit better solution, it was even approved, but
unfortunately we forgot to commit it. Discussion links:
https://gcc.gnu.org/ml/gcc-patches/2011-07/msg01803.html
https://gcc.gnu.org/ml/gcc-patches/2011-09/msg02049.html
https://gcc.gnu.org/ml/gcc-patches/2012-02/msg00479.html

Maybe it's better to apply that old patch?

PS. All my modulo-sched improvements described here together
https://gcc.gnu.org/ml/gcc-patches/2017-02/msg01647.html