[Bug rtl-optimization/65321] [5 Regression] ICE on valid code at -O2 and -O3 with -g enabled in decompose, at rtl.h:2007

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65321

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 34987
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34987&action=edit
gcc5-pr65321.patch

>From what I've seen, backends generally ensure that the shift amount mode is
not wider than the shift mode, so it is just the debug insns where this wasn't
enforced.  Fixed thusly (untested so far), does this look reasonable?