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[PATCH][target/52481] m68k-*: internal compiler error: in extract_insn, at recog.c:2123

From: Richard Henderson <rth at redhat dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Cc: rth at gcc dot gnu dot org
Date: Mon, 05 Mar 2012 10:44:51 -0800
Subject: [PATCH][target/52481] m68k-*: internal compiler error: in extract_insn, at recog.c:2123
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References: <bug-52481-119@http.gcc.gnu.org/bugzilla/> <bug-52481-119-mhXVZzV1I9@http.gcc.gnu.org/bugzilla/>

> --- Comment #1 from Mikael Pettersson <mikpe at it dot uu.se> 2012-03-04 21:01:28 UTC ---
> Created attachment 26827
>   --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26827
> reduced test case in C
> 
> Depends on target CPU selection.  -mcpu=680[012346]0 and -mcpu=cpu32 all work,
> but -mcpu=5206 (or apparently any other coldfire) ICEs.

Indeed.  Fixed by not trying to use negqi2 directly, but going
through the normal expanders which will DTRT for coldfire.

Tested via cross-compile, committed to mainline and 4.7.


r~

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Follow-Ups:
- Re: [PATCH][target/52481] m68k-*: internal compiler error: in extract_insn, at recog.c:2123
  - From: Ralf Corsepius

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