gnu/153298: Update base gcc with latest GPL2 patches (FSF 4.2.2 prerelease)

[Pedro F. Giffuni]

The following reply was made to PR gnu/153298; it has been noted by GNATS.

From: "Pedro F. Giffuni" <giffunip at yahoo.com>
To: bug-followup at FreeBSD.org
Cc:  
Subject: Re: gnu/153298: Update base gcc with latest GPL2 patches  (FSF 4.2.2 prerelease)
Date: Sun, 26 Dec 2010 10:42:06 -0800 (PST)

 This additional patch solves GCC PR 28796, It's originally
 from Apple's GCC so it's also covered by the GPL2.
 
 2006-10-24  Richard Guenther  <rguenther at suse.de>	       
 Radar 5675014
 PR middle-end/28796
 * builtins.c (fold_builtin_classify): Use HONOR_INFINITIES
 and HONOR_NANS instead of MODE_HAS_INFINITIES and MODE_HAS_NANS
 for deciding optimizations in consistency with fold-const.c
 (fold_builtin_unordered_cmp): Likewise.
 
 --- gcc.orig/builtins.c	2010-12-19 14:08:22.000000000 +0000
 +++ gcc/builtins.c	2010-12-26 11:51:18.000000000 +0000
 @@ -8720,7 +8720,7 @@
    switch (builtin_index)
      {
      case BUILT_IN_ISINF:
 -      if (!MODE_HAS_INFINITIES (TYPE_MODE (TREE_TYPE (arg))))
 +      if (!HONOR_INFINITIES (TYPE_MODE (TREE_TYPE (arg))))
  	return omit_one_operand (type, integer_zero_node, arg);
  
        if (TREE_CODE (arg) == REAL_CST)
 @@ -8736,8 +8736,8 @@
        return NULL_TREE;
  
      case BUILT_IN_FINITE:
 -      if (!MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg)))
 -	  && !MODE_HAS_INFINITIES (TYPE_MODE (TREE_TYPE (arg))))
 +      if (!HONOR_NANS (TYPE_MODE (TREE_TYPE (arg)))
 +	  && !HONOR_INFINITIES (TYPE_MODE (TREE_TYPE (arg))))
  	return omit_one_operand (type, integer_zero_node, arg);
  
        if (TREE_CODE (arg) == REAL_CST)
 @@ -8750,7 +8750,7 @@
        return NULL_TREE;
  
      case BUILT_IN_ISNAN:
 -      if (!MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg))))
 +      if (!HONOR_NANS (TYPE_MODE (TREE_TYPE (arg))))
  	return omit_one_operand (type, integer_zero_node, arg);
  
        if (TREE_CODE (arg) == REAL_CST)
 @@ -8833,13 +8833,13 @@
  
    if (unordered_code == UNORDERED_EXPR)
      {
 -      if (!MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg0))))
 +      if (!HONOR_NANS (TYPE_MODE (TREE_TYPE (arg0))))
  	return omit_two_operands (type, integer_zero_node, arg0, arg1);
        return fold_build2 (UNORDERED_EXPR, type, arg0, arg1);
      }
  
 -  code = MODE_HAS_NANS (TYPE_MODE (TREE_TYPE (arg0))) ? unordered_code
 -						      : ordered_code;
 +  code = HONOR_NANS (TYPE_MODE (TREE_TYPE (arg0))) ? unordered_code
 +						   : ordered_code;
    return fold_build1 (TRUTH_NOT_EXPR, type,
  		      fold_build2 (code, type, arg0, arg1));
  }