[Bug rtl-optimization/48549] [4.6/4.7 Regression] Combiner ICE with -g

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48549

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-04-12 10:53:50 UTC ---
Author: jakub
Date: Tue Apr 12 10:53:47 2011
New Revision: 172311

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172311
Log:
    PR rtl-optimization/48549
    * combine.c (propagate_for_debug): Also stop after BB_END of
    this_basic_block.  Process LAST and just stop processing after it.
    (combine_instructions): If last_combined_insn has been deleted,
    set last_combined_insn to its PREV_INSN.

    * g++.dg/opt/pr48549.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/opt/pr48549.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c
    trunk/gcc/testsuite/ChangeLog