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Re: [x32] PATCH: PR middle-end/47725: [x32] error: unable to find a register to spill in class DIREG

From: Eric Botcazou <ebotcazou at adacore dot com>
To: Bernd Schmidt <bernds at codesourcery dot com>
Cc: gcc-patches at gcc dot gnu dot org, Jeff Law <law at redhat dot com>, "H.J. Lu" <hjl dot tools at gmail dot com>
Date: Mon, 14 Feb 2011 20:46:17 +0100
Subject: Re: [x32] PATCH: PR middle-end/47725: [x32] error: unable to find a register to spill in class DIREG
References: <20110214185738.GA13004@intel.com> <201102142021.03117.ebotcazou@adacore.com> <4D598613.8040808@codesourcery.com>

> I agree with Jeff that combine would be the correct place to fix this.
> At least it takes class_likely_spilled_p into account, so it will
> restrict only those machines where extending the lifetime of hard regs
> is dangerous.

OK, but I don't see how copying to a new pseudo would interfere with that.

-- 
Eric Botcazou

Follow-Ups:
- Re: [x32] PATCH: PR middle-end/47725: [x32] error: unable to find a register to spill in class DIREG
  - From: Bernd Schmidt

References:
- [x32] PATCH: PR middle-end/47725: [x32] error: unable to find a register to spill in class DIREG
  - From: H.J. Lu
- Re: [x32] PATCH: PR middle-end/47725: [x32] error: unable to find a register to spill in class DIREG
  - From: Eric Botcazou
- Re: [x32] PATCH: PR middle-end/47725: [x32] error: unable to find a register to spill in class DIREG
  - From: Bernd Schmidt

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