[Bug debug/55730] [4.8 Regression] ICE in mem_loc_descriptor, at dwarf2out.c:12725

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55730



--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-19 
12:17:05 UTC ---

Author: jakub

Date: Wed Dec 19 12:16:56 2012

New Revision: 194607



URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194607

Log:

    PR debug/55730

    * dwarf2out.c (mem_loc_descriptor): Ignore CLOBBER.

    * valtrack.c (gen_lowpart_for_debug): New function.

    (propagate_for_debug): Temporarily set rtl_hooks.gen_lowpart_no_emit

    to gen_lowpart_for_debug.



    * gcc.dg/debug/pr55730.c: New test.



Added:

    trunk/gcc/testsuite/gcc.dg/debug/pr55730.c

Modified:

    trunk/gcc/ChangeLog

    trunk/gcc/dwarf2out.c

    trunk/gcc/testsuite/ChangeLog

    trunk/gcc/valtrack.c