[Bug rtl-optimization/49720] Infinite recursion compiling gold binary_test.cc testcase

[hjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49720

--- Comment #4 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2011-12-15 23:50:36 UTC ---
Author: hjl
Date: Thu Dec 15 23:50:32 2011
New Revision: 182394

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182394
Log:
Detect infinite recursion condition

gcc/

2011-12-15  H.J. Lu  <hongjiu.lu@intel.com>

    Backport from mainline.
    2011-10-28  Chung-Lin Tang  <cltang@codesourcery.com>

    PR rtl-optimization/49720
    * simplify-rtx.c (simplify_relational_operation_1): Detect
    infinite recursion condition in "(eq/ne (plus x cst1) cst2)
    simplifies to (eq/ne x (cst2 - cst1))" case.

gcc/testsuite/

2011-12-15  H.J. Lu  <hongjiu.lu@intel.com>

    Backport from mainline.
    2011-10-28  Chung-Lin Tang  <cltang@codesourcery.com>

    PR rtl-optimization/49720
    * g++.dg/torture/pr49720.C: New test.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/g++.dg/torture/pr49720.C
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/simplify-rtx.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog