re PR middle-end/58670 (asm goto miscompilation)

re PR middle-end/58670 (asm goto miscompilation)

	PR middle-end/58670
	* stmt.c (expand_asm_operands): Add FALLTHRU_BB argument,
	if any labels are in FALLTHRU_BB, use a special label emitted
	immediately after the asm goto insn rather than label_rtx
	of the LABEL_DECL.
	(expand_asm_stmt): Adjust caller.
	* cfgrtl.c (commit_one_edge_insertion): Force splitting of
	edge if the last insn in predecessor is a jump with single successor,
	but it isn't simplejump_p.

	* gcc.dg/torture/pr58670.c: New test.

From-SVN: r203383