patches/gcc/3.4.6/700-pr15068-fix.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Wed May 21 22:00:52 2008 +0000 (2008-05-21)
changeset 527 4ac12179ef23
permissions -rw-r--r--
Introduce target-specific LDFLAGS, the same way we have CFLAGS for the target.
It seems to be helping gcc somewhat into telling the correct endianness to ld that sticks with little endian even when the target is big (eg armeb-unknown-linux-uclibcgnueabi).
There's still work to do, especially finish the gcc part that is not in this commit.

/trunk/scripts/functions | 9 7 2 0 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
     1 diff -durN gcc-3.4.6.orig/gcc/flow.c gcc-3.4.6/gcc/flow.c
     2 --- gcc-3.4.6.orig/gcc/flow.c	2005-09-01 22:51:09.000000000 +0200
     3 +++ gcc-3.4.6/gcc/flow.c	2007-08-15 23:00:30.000000000 +0200
     4 @@ -1884,6 +1884,7 @@
     5  	  rtx set_src = SET_SRC (pc_set (BB_END (bb)));
     6  	  rtx cond_true = XEXP (set_src, 0);
     7  	  rtx reg = XEXP (cond_true, 0);
     8 + 	  enum rtx_code inv_cond;
     9  
    10  	  if (GET_CODE (reg) == SUBREG)
    11  	    reg = SUBREG_REG (reg);
    12 @@ -1892,11 +1893,13 @@
    13  	     in the form of a comparison of a register against zero.  
    14  	     If the condition is more complex than that, then it is safe
    15  	     not to record any information.  */
    16 -	  if (GET_CODE (reg) == REG
    17 + 	  inv_cond = reversed_comparison_code (cond_true, BB_END (bb));
    18 + 	  if (inv_cond != UNKNOWN
    19 +	      && GET_CODE (reg) == REG
    20  	      && XEXP (cond_true, 1) == const0_rtx)
    21  	    {
    22  	      rtx cond_false
    23 -		= gen_rtx_fmt_ee (reverse_condition (GET_CODE (cond_true)),
    24 +		= gen_rtx_fmt_ee (inv_cond,
    25  				  GET_MODE (cond_true), XEXP (cond_true, 0),
    26  				  XEXP (cond_true, 1));
    27  	      if (GET_CODE (XEXP (set_src, 1)) == PC)