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patches/gcc/4.0.0/140-pr21173-fix.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Feb 17 22:12:59 2008 +0000 (2008-02-17)
changeset 433 9886aa0a9694
permissions -rw-r--r--
Robert P. J. DAY says:

According to Mike Frysinger, this patch was removed from Gentoo in the
2.3.x series and didn't seem to cause any adverse effects. So toss it
from the patch directories for glibc 2.5 and up. 
     1 See http://gcc.gnu.org/PR21173

     2 This is a fix for a last minute brown-bag bug with gcc-4.0.0

     3 

     4  ------- Additional Comment #24 From CVS Commits 2005-04-25 14:03 [reply] ------- 

     5 Subject: Bug 21173

     6 

     7 CVSROOT:        /cvs/gcc

     8 Module name:    gcc

     9 Branch:         gcc-4_0-branch

    10 Changes by:     dberlin@gcc.gnu.org     2005-04-25 14:02:38

    11 

    12 Modified files:

    13         gcc            : ChangeLog tree-ssa-pre.c 

    14 

    15 Log message:

    16         2005-04-25  Daniel Berlin  <dberlin@dberlin.org>

    17         

    18         Fix PR tree-optimization/21173

    19         

    20         * tree-ssa-pre.c (create_expression_by_pieces): Call unshare_expr

    21         on things we pass to force_gimple_operand.  Don't try to special

    22         case min_invariants.

    23 

    24 Patches:

    25 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.192&r2=2.7592.2.193

    26 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-pre.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.65.4.2&r2=2.65.4.3

    27 

    28 ===================================================================

    29 RCS file: /cvs/gcc/gcc/gcc/tree-ssa-pre.c,v

    30 retrieving revision 2.65.4.2

    31 retrieving revision 2.65.4.3

    32 diff -u -r2.65.4.2 -r2.65.4.3

    33 --- gcc/gcc/tree-ssa-pre.c	2005/04/17 23:40:31	2.65.4.2

    34 +++ gcc/gcc/tree-ssa-pre.c	2005/04/25 14:02:31	2.65.4.3

    35 @@ -1330,7 +1330,8 @@

    36  	

    37  	folded = fold (build (TREE_CODE (expr), TREE_TYPE (expr), 

    38  			      genop1, genop2));

    39 -	newexpr = force_gimple_operand (folded, &forced_stmts, false, NULL);

    40 +	newexpr = force_gimple_operand (unshare_expr (folded), 

    41 +					&forced_stmts, false, NULL);

    42  	if (forced_stmts)

    43  	  {

    44  	    tsi = tsi_start (forced_stmts);

    45 @@ -1372,14 +1373,8 @@

    46  	add_referenced_tmp_var (temp);

    47  	folded = fold (build (TREE_CODE (expr), TREE_TYPE (expr), 

    48  			      genop1));

    49 -	/* If the generated operand  is already GIMPLE min_invariant

    50 -	   just use it instead of calling force_gimple_operand on it,

    51 -	   since that may make it not invariant by copying it into an

    52 -	   assignment.  */

    53 -	if (!is_gimple_min_invariant (genop1))

    54 -	  newexpr = force_gimple_operand (folded, &forced_stmts, false, NULL);

    55 -	else

    56 -	  newexpr = genop1;

    57 +	newexpr = force_gimple_operand (unshare_expr (folded), 

    58 +					&forced_stmts, false, NULL);

    59  	if (forced_stmts)

    60  	  {

    61  	    tsi = tsi_start (forced_stmts);

    62 

    63     0K .                                                         1.24 MB/s

    64 

    65 13:16:54 (1.24 MB/s) - `-' saved [1303]

    66
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