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patches/gcc/3.4.4/700-pr15068-fix.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sat Feb 24 11:00:05 2007 +0000 (2007-02-24)
changeset 1 eeea35fbf182
permissions -rw-r--r--
Add the full crosstool-NG sources to the new repository of its own.
You might just say: 'Yeah! crosstool-NG's got its own repo!".
Unfortunately, that's because the previous repo got damaged beyond repair and I had no backup.
That means I'm putting backups in place in the afternoon.
That also means we've lost history... :-( 
     1 See http://gcc.gnu.org/PR15068

     2 

     3 Fixes error

     4 

     5 ../sysdeps/generic/s_fmax.c: In function `__fmax':

     6 ../sysdeps/generic/s_fmax.c:28: internal compiler error: in elim_reg_cond, at flow.c:3257

     7 Please submit a full bug report,

     8 with preprocessed source if appropriate.

     9 See <URL:http://gcc.gnu.org/bugs.html> for instructions.

    10 make[2]: *** [/home/dank/wk/crosstool-0.28-rc35/build/arm-unknown-linux-gnu/gcc-3.4.1-glibc-20040822/build-glibc/math/s_fmax.o] Error 1

    11 make[2]: Leaving directory `/home/dank/wk/crosstool-0.28-rc35/build/arm-unknown-linux-gnu/gcc-3.4.1-glibc-20040822/glibc-20040822/math'

    12 make[1]: *** [math/others] Error 2

    13 make[1]: Leaving directory `/home/dank/wk/crosstool-0.28-rc35/build/arm-unknown-linux-gnu/gcc-3.4.1-glibc-20040822/glibc-20040822'

    14 make: *** [all] Error 2

    15 

    16 [ rediffed against gcc-3.4.1, with elbow grease, ending up with same thing as

    17 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/flow.c.diff?cvsroot=gcc&only_with_tag=csl-arm-branch&r1=1.563.4.2&r2=1.563.4.3 ]

    18 

    19 --- gcc-3.4.1/gcc/flow.c.old	2004-02-27 19:39:19.000000000 -0800

    20 +++ gcc-3.4.1/gcc/flow.c	2004-08-26 07:29:46.000000000 -0700

    21 @@ -1878,6 +1878,7 @@

    22  	  rtx set_src = SET_SRC (pc_set (BB_END (bb)));

    23  	  rtx cond_true = XEXP (set_src, 0);

    24  	  rtx reg = XEXP (cond_true, 0);

    25 + 	  enum rtx_code inv_cond;

    26  

    27  	  if (GET_CODE (reg) == SUBREG)

    28  	    reg = SUBREG_REG (reg);

    29 @@ -1886,11 +1887,13 @@

    30  	     in the form of a comparison of a register against zero.  

    31  	     If the condition is more complex than that, then it is safe

    32  	     not to record any information.  */

    33 -	  if (GET_CODE (reg) == REG

    34 + 	  inv_cond = reversed_comparison_code (cond_true, BB_END (bb));

    35 + 	  if (inv_cond != UNKNOWN

    36 +	      && GET_CODE (reg) == REG

    37  	      && XEXP (cond_true, 1) == const0_rtx)

    38  	    {

    39  	      rtx cond_false

    40 -		= gen_rtx_fmt_ee (reverse_condition (GET_CODE (cond_true)),

    41 +		= gen_rtx_fmt_ee (inv_cond,

    42  				  GET_MODE (cond_true), XEXP (cond_true, 0),

    43  				  XEXP (cond_true, 1));

    44  	      if (GET_CODE (XEXP (set_src, 1)) == PC)
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