* cfglayout.c (fixup_reorder_chain): Allow asm goto to have
no fallthru edge.
* cfgcleanup.c (try_optimize_cfg): When in cfglayout mode
optimizing away empty bb with no successors, move over its
footer chain to fallthru predecessor.
* cfgrtl.c (patch_jump_insn): Update also REG_LABEL_OPERAND.
(rtl_split_edge): For asm goto call patch_jump_insn even if
splitting fallthru edge.
* c-c++-common/asmgoto-4.c: New test.
* gcc.target/i386/pr44071.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@159288
138bc75d-0d04-0410-961f-
82ee72b054a4