[Bug middle-end/58723] [4.9 Regression] ICE in lto_output_edge, at lto-cgraph.c:300 for OpenMP's simd reduction

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58723

--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #13)
> Eh.
> 
> make check-gcc RUNTESTFLAGS="--target_board=unix/-flto/-ffat-lto-objects
> gomp.exp"
> 
> FAIL: gcc.dg/gomp/declare-simd-1.c (internal compiler error)
> FAIL: gcc.dg/gomp/declare-simd-1.c (test for excess errors)
> 
> But otherwise clean.
> 
> /space/rguenther/src/svn/trunk/gcc/testsuite/gcc.dg/gomp/declare-simd-1.c:
> 100:1: internal compiler error: tree code 'omp_clause' is not supported in
> LTO streams^M
> 0xa6dbe4 lto_write_tree^M
>         /space/rguenther/src/svn/trunk/gcc/lto-streamer-out.c:376^M
> 
> seems like FUNCTION_DECLs now refer to OMP_CLAUSE?  Ah... via attributes :/
> 
> Jakub - please add tree streaming support for the relevant required stuff.

Yeah, that is the current reason why the new elementals tests to be committed
also fail with LTO.  I'll hack on that.