[Bug rtl-optimization/47166] [4.5 4.6 Regression] SpecCpu2000 Ammp segfaults for ARM with -O3 -mthumb

[ibolton at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47166

--- Comment #6 from Ian Bolton <ibolton at gcc dot gnu.org> 2011-01-05 14:38:42 UTC ---
> I mean, the <But r1 is an input as well as an output , i.e. "referred to", so
> insn 3163 should have matched without your patch.  I'm missing analysis on why
> that didn't happen> part.

OK, I will do more analysis to try to determine what's going on.