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patches/gcc/3.4.6/180-pr15068-fix.patch
author Esben Haabendal <esben.haabendal@prevas.dk>
Wed Sep 26 09:09:23 2012 +0200 (2012-09-26)
changeset 3065 603ccf80c48b
parent 339 bd5e0a849352
permissions -rw-r--r--
kernel/linux: change m68k/no-mmu linux arch tuple to use -uclinux

GCC requires m68k arch tuples to be *-*-uclinux-* to support Linux on
no-mmu m68k (ColdFire) cpus.

Blackfin arch tuple must be *-*-linux-uclibc for FD_PIC_ELF toolchains,
so we cannot just switch to uclinux for no-mmu Linux toolchains.

Signed-off-by: "Esben Haabendal" <esben@haabendal.dk>
Message-Id: <876271s1ee.fsf@arh128.prevas.dk>
PatchWork-Id: 186976 
     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)
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