[Bug tree-optimization/48837] [4.4/4.5/4.6 Regression] Wrong optimization of recursive function calls

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48837

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-10 08:45:56 UTC ---
Author: jakub
Date: Tue May 10 08:45:50 2011
New Revision: 173610

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173610
Log:
    Backported from mainline
    2011-05-07  Zdenek Dvorak  <ook@ucw.cz>

    PR tree-optimization/48837
    * tree-tailcall.c (tree_optimize_tail_calls_1): Do not mark tailcalls
    when accumulator transformation is performed.

    * gcc.dg/pr48837.c: New testcase.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr48837.c
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_5-branch/gcc/tree-tailcall.c