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Re: [4.0 PATCH] Fix PR 20927

From: Andreas Jaeger <aj at suse dot de>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: Ulrich Weigand <uweigand at de dot ibm dot com>, rsandifo at redhat dot com,rth at redhat dot com, gcc-patches at gcc dot gnu dot org
Date: Tue, 12 Apr 2005 19:02:11 +0200
Subject: Re: [4.0 PATCH] Fix PR 20927
References: <200504112211.j3BMBvt7002324@53v30g15.boeblingen.de.ibm.com><425B6C95.8090507@codesourcery.com>

Mark Mitchell <mark@codesourcery.com> writes:

> Ulrich Weigand wrote:
>> Richard Sandiford wrote:
>>
>>>       PR rtl-optimization/19683
>>>       * reload1.c (choose_reload_regs): Pass the number of bits, not the
>>>       number of bytes, to smallest_int_for_mode.  Fix arguments to
>>>       REG_CANNOT_CHANGE_MODE_P.
>> Unfortunately, this change triggers PR 20927, an ICE on s390x
>> (a regression of 4.0 over 3.4).
>
> Does this problem affect any architectures other than S390?

I have only seen it on s390, the same sources build fine on other
architectures (i386, x86-64, ia64, ppc, ppc64, s390) - just s390x is
the problem,

Andreas
-- 
 Andreas Jaeger, aj@suse.de, http://www.suse.de/~aj
  SUSE Linux Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
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Follow-Ups:
- Re: [4.0 PATCH] Fix PR 20927
  - From: Andrew Pinski

References:
- [4.0 PATCH] Fix PR 20927 (was: PR19683: Fix a use of REG_CANNOT_CHANGE_MODE_P)
  - From: Ulrich Weigand
- Re: [4.0 PATCH] Fix PR 20927
  - From: Mark Mitchell

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