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virtual stack regs.
- From: Kenneth Zadeck <zadeck at naturalbridge dot com>
- To: ubizjak at gmail dot com, gcc at gcc dot gnu dot org
- Date: Mon, 18 Jun 2007 20:28:25 -0400
- Subject: virtual stack regs.
I would like to get some more information about pr32374.
I do not know what virtual_stack_vars are and there is no documentation
in the doc directory.
1) What are these?
2) Why are they uninitialized?
3) If they really are uninitialized, why is it a problem to assign zero
to them.
4) If they are not uninitialized, where is the initialization code? Why
does df not see it?
5) How can I tell if a reg is a virtual_stack_reg?