[Bug bootstrap/70706] New: [7 Regression] r235082 caused bootstrap failure

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70706

            Bug ID: 70706
           Summary: [7 Regression] r235082 caused bootstrap failure
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: hubicka at ucw dot cz
  Target Milestone: ---

r235082 caused:

libbackend.a(graphite.o): In function `graphite_finalize(bool)':
/export/gnu/import/git/gcc-test-profiled/bld/gcc/../../src-trunk/gcc/graphite.c:259:
undefined reference to `tree_estimate_probability()'
collect2: error: ld returned 1 exit status
../../src-trunk/gcc/lto/Make-lang.in:71: recipe for target 'lto1' failed
make[6]: *** [lto1] Error 1

when GCC is configured with

--prefix=/usr/7.0.0 --enable-clocale=gnu --with-system-zlib --enable-shared
--with-demangler-in-ld --enable-libmpx --with-build-config=bootstrap-lto
--disable-werror --with-fpmath=sse
--enable-languages=c,c++,fortran,java,lto,objc

and built with

# make -j8 profiledbootstrap