ipa.c (cgraph_postorder): Adjust postorder to guarantee single-iteration always-inlin...

ipa.c (cgraph_postorder): Adjust postorder to guarantee single-iteration always-inline inlining.

2010-04-12  Richard Guenther  <rguenther@suse.de>

	* ipa.c (cgraph_postorder): Adjust postorder to guarantee
	single-iteration always-inline inlining.
	* ipa-inline.c (cgraph_mark_inline): Do not return anything.
	(cgraph_decide_inlining): Do not handle always-inline
	specially.
	(try_inline): Remove always-inline cycle detection special case.
	Do not recurse on always-inlines.
	(cgraph_early_inlining): Do not iterate if not optimizing.
	(cgraph_gate_early_inlining): remove.
	(pass_early_inline): Run unconditionally.
	(gate_cgraph_decide_inlining): New function.
	(pass_ipa_inline): Use it.  Do not run the IPA inliner if
	not inlining or optimizing.
	(cgraph_decide_inlining_of_small_functions): Also consider
	always-inline functions.
	(cgraph_default_inline_p): Return true for nodes which should
	disregard inline limits.
	(estimate_function_body_sizes): Assume zero size and time for
	nodes which are marked as disregarding inline limits.
	(cgraph_decide_recursive_inlining): Do not perform recursive
	inlining on always-inline nodes.

	* gcc.dg/torture/inline-2.c: New testcase.

From-SVN: r158225