This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: ssa bootstrap problem on x86 (cmpstrsi_1 pattern)
On Thu, Jul 27, 2000 at 01:10:11PM -0700, Mark Mitchell wrote:
> I think we need to bite the bullet and get the CLOBBERs out of there;
> otherwise, we are forced to do some kind of dataflow anlaysis in SSA...
Not at all. We have a register set, once, to an unspecified value.
That unspecified value is "valid" everywhere, just as with a register
set to a useful value.
r~