Re: GCC trunk revision 120704 failed to build spec cpu2k/gcc

[Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>]

Hello,

> > > GCC trunk revision 120704 failed to build SPEC cpu2000/gcc on -O1 and 
> > > higher optimization level at x86_64-redhat-linux.
> > > 
> > > reload1.c: In function 'reload':
> > > reload1.c:449: error: address taken, but ADDRESSABLE bit not set
> > > bad_spill_regs
> > > 
> > > reload1.c:449: error: address taken, but ADDRESSABLE bit not set
> > > bad_spill_regs
> > > 
> > > reload1.c:449: internal compiler error: verify_stmts failed
> > > Please submit a full bug report,
> > > with preprocessed source if appropriate.
> > > See <URL:http://gcc.gnu.org/bugs.html> for instructions.
> > > 
> > > Does anybody see the same?
> 
> I can reproduce this on i686.  I will check what the problem is,

this is probably due to some of the recent IPA changes.
ipa-reference.c:analyze_function does not traverse phi nodes,
and thus misses that the address of bad_spill_regs is taken inside the
phi node (and clears the addressable flag from it, causing an ICE
later).  I am working on the patch.

Zdenek