[ast-optimizer-branch] simplifying C++

[Jason Merrill]

>>>>> "Diego" == Diego Novillo <dnovillo@redhat.com> writes:

> The McCAT folks already went through these pains when they
> designed Jimple, the Java version of SIMPLE
> (http://www.sable.mcgill.ca/soot/doc/soot/jimple/package-summary.html)

IMO Jimple is not a very good guide for us, since it is targeted at
compiling Java bytecode, and the particular challenges that entails.  It
makes no attempt to retain structure, since that has already been thrown
away by the time we get to bytecode.

Jason