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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [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)
Date: Tue, 26 Nov 2013 11:35:00 -0000
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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).