re PR rtl-optimization/48389 (ICE: in make_edges, at cfgbuild.c:319 with -mtune=penti...

re PR rtl-optimization/48389 (ICE: in make_edges, at cfgbuild.c:319 with -mtune=pentiumpro)

	PR middle-end/48389
	* jump.c (rebuild_jump_labels_1, rebuild_jump_labels_chain): New
	functions.
	(rebuild_jump_labels): Call rebuild_jump_labels_1.
	* rtl.h (rebuild_jump_labels_chain): Declare.
	* cfgexpand.c (gimple_expand_cfg): Initialize JUMP_LABEL also on
        insns inserted on edges.

testsuite/
	* gcc.target/i386/pr48389.c: New test.

From-SVN: r172208