[Bug rtl-optimization/49619] [4.5/4.6/4.7 Regression] ICE in simplify_subreg, at simplify-rtx.c:5362

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49619

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-07-04 
21:04:57 UTC ---
Author: jakub
Date: Mon Jul  4 21:04:54 2011
New Revision: 175825

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175825
Log:
    PR rtl-optimization/49619
    * combine.c (combine_simplify_rtx): In PLUS -> IOR simplification
    pass VOIDmode as op0_mode to recursive call, and return temp even
    when different from tor, just if it is not IOR of the original
    PLUS arguments.

    * gcc.dg/pr49619.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr49619.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c
    trunk/gcc/simplify-rtx.c
    trunk/gcc/testsuite/ChangeLog