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patches/gcc/4.6.1/000-gcc-bug-54369.patch
author Florian Fainelli <f.fainelli@gmail.com>
Wed Sep 19 10:35:32 2012 +0200 (2012-09-19)
changeset 3049 f0ae157444dc
child 3104 7da91f9ba328
permissions -rw-r--r--
cc/gcc: backport upstream patches for GCC bug 54369

See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54369 for more information
This bug has a serious effect on Linux/MIPS and SPARC kernel builds.

Add the fix for these versions of gcc: 4.6.0, 4.6.2, 4.6.3, and 4.7.0.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> 
     1 Author: ebotcazou

     2 Date: Sun Sep  2 10:37:49 2012

     3 New Revision: 190860

     4 

     5 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190860

     6 Log:

     7     PR rtl-optimization/54369

     8     * config/mips/mips.c (mips_reorg): Invoke cleanup_barriers before

     9     calling dbr_schedule.

    10     * config/sparc/sparc.c (sparc_reorg): Likewise.

    11 

    12 Modified:

    13     branches/gcc-4_6-branch/gcc/ChangeLog

    14     branches/gcc-4_6-branch/gcc/config/mips/mips.c

    15     branches/gcc-4_6-branch/gcc/config/sparc/sparc.c

    16 ---

    17 --- gcc-4_6-branch/gcc/config/mips/mips.c	2012/09/02 10:36:54	190859

    18 +++ gcc-4_6-branch/gcc/config/mips/mips.c	2012/09/02 10:37:49	190860

    19 @@ -15083,7 +15083,10 @@

    20      }

    21  

    22    if (optimize > 0 && flag_delayed_branch)

    23 -    dbr_schedule (get_insns ());

    24 +    {

    25 +      cleanup_barriers ();

    26 +      dbr_schedule (get_insns ());

    27 +    }

    28    mips_reorg_process_insns ();

    29    if (!TARGET_MIPS16

    30        && TARGET_EXPLICIT_RELOCS

    31 --- gcc-4_6-branch/gcc/config/sparc/sparc.c	2012/09/02 10:36:54	190859

    32 +++ gcc-4_6-branch/gcc/config/sparc/sparc.c	2012/09/02 10:37:49	190860

    33 @@ -9456,7 +9456,10 @@

    34    /* We need to have the (essentially) final form of the insn stream in order

    35       to properly detect the various hazards.  Run delay slot scheduling.  */

    36    if (optimize > 0 && flag_delayed_branch)

    37 -    dbr_schedule (get_insns ());

    38 +    {

    39 +      cleanup_barriers ();

    40 +      dbr_schedule (get_insns ());

    41 +    }

    42  

    43    /* Now look for specific patterns in the insn stream.  */

    44    for (insn = get_insns (); insn; insn = next)

    45
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