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

[burnus at gcc dot gnu.org]

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

--- Comment #8 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Created attachment 31302
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31302&action=edit
Small test case: test.tar.gz

I managed to create a test case.

The attached test case is essentially attachment 31000, except of changing it
to a .cc file and adding #include<vector> - and writing a simple main()
function for it.

$  g++ -std=c++11 -flto -fopenmp-simd -Ofast test.cc test-main.cc
test.cc: In member function 'fini':
test.cc:31:6: internal compiler error: in expand_GOMP_SIMD_LANE, at
internal-fn.c:129
 void XPClass::fini(std::vector<XPBox> *__restrict out) noexcept {
      ^
0x7b48d7 expand_GOMP_SIMD_LANE
        ../../gcc/internal-fn.c:129