re PR middle-end/37535 (gcc/libgcc2.c:404: internal compiler error: Floating point...

re PR middle-end/37535 (gcc/libgcc2.c:404: internal compiler error: Floating point exception)

2008-10-06  Vladimir Makarov  <vmakarov@redhat.com>

	PR middle-end/37535

	* ira-lives.c (mark_reg_live, mark_reg_dead): New functions.
	(mark_ref_live, mark_ref_dead): Use them.
	(def_conflicts_with_inputs_p): Remove.
	(mark_early_clobbers): New function.
	(process_bb_node_lives): Call preprocess_constraints and
	mark_early_clobbers.

	* doc/rtx.texi (clobber): Change how RA deals with clobbers.

From-SVN: r140906