[Bug rtl-optimization/59166] [4.9 Regression] ICE in simplify_subreg, at simplify-rtx.c:5901 on valid code (at -O1 and above with -g enabled)

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59166

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In *.asmcons we still have correct:
(debug_insn 30 29 31 7 (var_location:HI D#1 (subreg:HI (reg/v:SI 93 [ p ]) 0))
pr59166.c:20 -1
     (nil))
but in *.ira we have:
(debug_insn 30 29 31 7 (var_location:HI D#1 (reg/v:SI 97 [orig:93 p ] [93]))
pr59166.c:20 -1
     (nil))
(note the wrong mode).