What is wrong with my SSA (ICE in SSA name coalescing)?

[Jakub Jelinek]

On Fri, May 17, 2013 at 04:03:25PM +0400, Ilya Enkovich wrote:
> Here is GIMPLE after my instrumentation. Instrumentation
> statements/expressions are marked with +++
> 
> test ()
> {
> +++<unnamed type> __tmp.0;+++
>   char * name;
>   int D.1761;
>   int _5;
> 
>   <bb 10>:
> +++__tmp.0_9 = __length_1;+++
> +++__tmp.0_8(ab) = __zero_length;+++

I think this is wrong, you are using the same underlying
var __tmp.0 for two values concurrently when at least one of them
is (ab).  If _9 is not (ab), why don't you use just _9 (anon SSA_NAME),
or a different underlying decl for that?

	Jakub