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Re: [PATCH, MIPS] Fix build after no_new_pseudos

From: Adam Nemet <anemet at caviumnetworks dot com>
To: Ian Lance Taylor <iant at google dot com>
Cc: Richard Sandiford <richard at codesourcery dot com>, gcc-patches at gcc dot gnu dot org, sandra at codesourcery dot com
Date: Mon, 16 Jul 2007 10:51:23 -0700
Subject: Re: [PATCH, MIPS] Fix build after no_new_pseudos
References: <18074.28991.32902.226849@localhost.localdomain> <87lkdghf3g.fsf@firetop.home> <m3lkdg9uhe.fsf@localhost.localdomain>

Ian Lance Taylor writes:
> I think we should fix combine to permit splitters to create new
> pseudos.  I don't think it does us any useful service to prohibit
> them.

OK so if I understand correctly you're proposing a slight change in
the combine-backend interface.  Besides using the pseudos provided
through a clobber now even new pseudo could be used.  Then combine
would have to scan the insn for those new pseudos and update reg_stat?

Adam

Follow-Ups:
- Re: [PATCH, MIPS] Fix build after no_new_pseudos
  - From: Sandra Loosemore

References:
- [PATCH, MIPS] Fix build after no_new_pseudos
  - From: Adam Nemet
- Re: [PATCH, MIPS] Fix build after no_new_pseudos
  - From: Richard Sandiford
- Re: [PATCH, MIPS] Fix build after no_new_pseudos
  - From: Ian Lance Taylor

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