[Bug lto/55703] [4.8 Regression] ICE: in lto_fixup_prevailing_decls, at lto/lto.c:2732 in gcc.c-torture/execute/920721-4.c

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55703



--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-19 
13:53:32 UTC ---

Author: rguenth

Date: Wed Dec 19 13:53:18 2012

New Revision: 194609



URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194609

Log:

2012-12-19  Richard Biener  <rguent...@suse.de>



    PR tree-optimization/55736

    PR tree-optimization/55703

    * gimplify.c (prune_expr_location): New function.

    (unshare_expr_without_location): Likewise.

    * tree.h (unshare_expr_without_location): Declare.

    * ipa-prop.c (prune_expression_for_jf): Remove.

    (prune_expression_for_jf_1): Likewise.

    (ipa_set_jf_constant): Use unshare_expr_without_location.

    (ipa_set_jf_arith_pass_through): Likewise.

    (determine_known_aggregate_parts): Likewise.

    * tree-switch-conversion.c (build_constructors): Use

    unshare_expr_without_location on all constructor elements.



    * gcc.dg/lto/pr55703_0.c: New testcase.



Added:

    trunk/gcc/testsuite/gcc.dg/lto/pr55703_0.c

Modified:

    trunk/gcc/ChangeLog

    trunk/gcc/gimplify.c

    trunk/gcc/ipa-prop.c

    trunk/gcc/testsuite/ChangeLog

    trunk/gcc/tree-switch-conversion.c

    trunk/gcc/tree.h