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Re: is REG_WAS_0 usable in final pass
- To: Denis Chertykov <denisc at overta dot ru>
- Subject: Re: is REG_WAS_0 usable in final pass
- From: Bernd Schmidt <bernds at redhat dot com>
- Date: Sat, 2 Jun 2001 11:38:08 +0100 (BST)
- cc: <gcc at gcc dot gnu dot org>
On Sat, 2 Jun 2001, Denis Chertykov wrote:
>
> Is REG_WAS_0 usable in final pass?
> (While backend output asm patterns)
> `bbro' pass can change REG_WAS_0 note, but bbro don't correct it.
>
> Denis.
> PS: Only 3 ports uses REG_WAS_0: vax, tahoe and AVR.
> PS: vax and tahoe are pretty dead and I'm worry about AVR port.
I thought the i386 used it as well. If that's no longer the case, we should
remove support for it (unless you have a really good argument why the AVR
needs it). It costs too much to maintain these notes for no significant gain.
Bernd