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Re: [4.0 PATCH] Fix PR 20927

From: Mark Mitchell <mark at codesourcery dot com>
To: Ulrich Weigand <uweigand at de dot ibm dot com>
Cc: rsandifo at redhat dot com, rth at redhat dot com, gcc-patches at gcc dot gnu dot org, aj at suse dot de
Date: Mon, 11 Apr 2005 23:37:09 -0700
Subject: Re: [4.0 PATCH] Fix PR 20927
Organization: CodeSourcery, LLC
References: <200504112211.j3BMBvt7002324@53v30g15.boeblingen.de.ibm.com>

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?

Thanks,

--
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com
(916) 791-8304

Follow-Ups:
- Re: [4.0 PATCH] Fix PR 20927
  - From: Andreas Jaeger
- Re: [4.0 PATCH] Fix PR 20927
  - From: Ulrich Weigand

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

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