[3.3 branch] IA64 bootstrap failure

[S. Bosscher]

Jim Wilson wrote:
> 
> Andreas Schwab wrote:
> > Running the same (stage2) compiler command on the command line
> produces
> > output that is the same as the output from the stage1 compiler.  So it
> > indeed looks like it's dependent on the environment size.
> 
> I've debugged problems like this before.  You vary the environment size 
> until you can reproduce the problem, and then you debug two compilers in
> parallel with different environment sizes until you figure out why they 
> emit different code.  Probably an uninitialized variable or a 
> stray/out-of-bounds memory reference somewhere.  Another possibly is 
> that addresses are being used (e.g. in a hash table) and there is a 
> latent bug in the code.

Doesn't valgrind check for uninitialized/out-of-bounds memory refs?

Gr.
Steven