Patch to fix gcc.c-torture/compile/20010102-1.c on IA64 HP-UX

[Richard Henderson]

Steve Ellcey wrote:
> Setting REG_POINTER in do_replace is the only one that is necessary to
> fix my bug.  I just changed the others in an attempt to be complete.

The change in do_replace is ok.

For the others, where the new rtx is created by maybe_mode_change,
it's unclear which of ORIG or COPY would have the correct value for
REG_POINTER.  It's also unclear why you'd be changing modes like
that for real pointer values.  I suppose if mode==orig_mode and
orig had reg_pointer set, that'd be good enough to set it in the
new rtx.


r~