testsuite regressions with Joern's recent loop changes

[Joe Buck]

> Joern's recent changes to loop (current CVS plus both bugfixe he
> posted) produce a bunch of regressions in the testsuite here.
> 
> Not all of them appear to be directly related - for example,
> gcc.misc-tests/m-un-2.c is complaining about uninit variable warnings -
> but none of them were happening before.  Well, I'm pretty sure.

Some of the failures you show are new tests, not regressions:

> Native configuration is i586-pc-linux-gnu
> Compiler version: egcs-2.93.03 19990128 (gcc2 ss-980929 experimental) 

note the date ......................^

> FAIL: gcc.c-torture/execute/990128-1.c execution,  -O2 

note the date ......................^

Some of the g++ failures are new tests as well.