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patches/gcc/4.6.3/000-gcc-bug-54369.patch
author Johannes Stezenbach <js@sig21.net>
Tue Oct 30 00:22:25 2012 +0000 (2012-10-30)
changeset 3097 5c67476c7342
permissions -rw-r--r--
scripts/functions: fix endless loop in debug-shell with IO redirection

CT_DEBUG_INTERACTIVE is disabled when stdin, stdout or
stderr are redirected, but the check is only done at
the start of the build and doesn't catch when individual
build commands use redirection. When stdin is redirected
it will cause the debug shell to exit immediately, causing
and endless loop. Thus, save the stdin/our/err file handles
and restore them before invoking the debug shell.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
Message-Id: <20121030102225.GA8303@sig21.net>
Patchwork-Id: 195409 
     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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