[Bug bootstrap/68135] New: [6 Regression] profiledbootstrap failure with --with-build-config=bootstrap-lto

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68135

            Bug ID: 68135
           Summary: [6 Regression] profiledbootstrap failure with
                    --with-build-config=bootstrap-lto
           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
  Target Milestone: ---

On Linux/x86-64, r229472 failed to profiledbootstrap with
--with-build-config=bootstrap-lto:

configure \
         --prefix=/usr/6.0.0 --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
make -j 8 profiledbootstrap

../../src-trunk/gcc/recog.c: In function \u2018decode_asm_operands\u2019:
../../src-trunk/gcc/recog.c:1560:1: error: invalid PHI argument
 decode_asm_operands (rtx body, rtx *operands, rtx **operand_locs,
 ^
<<< Unknown tree: <invalid tree code> >>>
../../src-trunk/gcc/recog.c:1560:1: internal compiler error: tree check:
expected tree that contains \u2018typed\u2019 structure, have \u2018<invalid
tree code>\u2019 in verify_gimple_phi, at tree-cfg.c:4673
0x11e3ec5 tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
        ../../src-trunk/gcc/tree.c:9764
0xe43bca contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
        ../../src-trunk/gcc/tree.h:3033
0xe43bca verify_gimple_phi
        ../../src-trunk/gcc/tree-cfg.c:4673
0xe43bca verify_gimple_in_cfg(function*, bool)
        ../../src-trunk/gcc/tree-cfg.c:4967
0xc56d79 execute_function_todo
        ../../src-trunk/gcc/passes.c:1967
0xc55291 do_per_function
        ../../src-trunk/gcc/passes.c:1659
0xc557cb execute_todo
        ../../src-trunk/gcc/passes.c:2022
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[7]: *** [/tmp/ccbvSx5P.ltrans19.ltrans.o] Error 1

r229465 is OK.