mem sharing fix [Re: Your flow.c change on 4/8]

[Rod Stewart]

On Wed, 12 Apr 2000, Richard Henderson wrote:

> > /usr/src/redhat/BUILD/gcc/gcc/except.c: In function `init_insn_eh_region':
> > /usr/src/redhat/BUILD/gcc/gcc/except.c:3171: Internal compiler error in
> > `verify_wide_reg_1', at flow.c:2626
> 
> Arg.  I had Kaz' autoinc patch in my tree, which has the bug that
> it doesn't check for a hard reg before it tests for an eliminable
> register.  Which means that autoinc never does anything at all.
> 
> Reverting that, I reproduce the bug in the original small test
> and the except.i test.
> 
> Here's a fix.  Jeff apparently had a similar problem while doing
> PA64 development.  I have no idea how this is suddenly triggered.

Thanks, it now makes it further in the bootstrap on ARM Linux Elf.  Not
quite there yet.

It now dies with a seg fault in stage1/cc1.  But I'll send that one to
gcc-bugs.

-Rms