Re: lib/44057

[Martin Husemann <martin%duskware.de@localhost>]

The following reply was made to PR lib/44057; it has been noted by GNATS.

From: Martin Husemann <martin%duskware.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: lib/44057
Date: Sat, 16 Apr 2011 20:27:26 +0200

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 Following this suggestion I tested the attached patch, and it made both
 sparc64 and alpha pass the test.
 
 I am not going to commit this to keep clear out of license problems.
 Now that we know it is a gcc bug, let the problem rest untill a newer
 gcc gets imported.
 
 If this should not happen before the branch for NetBSD 6, let core/board
 decide how to deal with it.
 
 Martin
 
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 Index: combine.c
 ===================================================================
 RCS file: /cvsroot/src/gnu/dist/gcc4/gcc/combine.c,v
 retrieving revision 1.1.1.5
 diff -c -u -p -r1.1.1.5 combine.c
 --- combine.c  31 Aug 2008 09:31:22 -0000      1.1.1.5
 +++ combine.c  16 Apr 2011 18:20:32 -0000
 @@ -8257,6 +8257,9 @@ distribute_and_simplify_rtx (rtx x, int 
      return NULL_RTX;
  
    mode = GET_MODE (x);
 +  if (FLOAT_MODE_P (mode) && !flag_unsafe_math_optimizations)
 +    return NULL_RTX;
 +
    outer_code = GET_CODE (x);
    distributed = XEXP (x, !n);
  
 
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