This patch fixes the issue of indirect call promotion while using AutoFDO optimized...

This patch fixes the issue of indirect call promotion while using AutoFDO optimized binary to collect profile, and use the new profile to re-optimize the binary. Before the patch, the indirect call is promoted (and likely inlined) in the profiled binary, and will not be promoted in the new iteration. With the patch, a new iterative vpt+einline pass is added before annotation to make sure hot promoted indirect calls are still promoted before annotation.

2013-10-11  Dehao Chen  <dehao@google.com>

	* gcc/coverage.h (check_ic_target): New declaration.
	* gcc/auto-profile.c (stmt_set): New type.
	(function_instance::find_icall_target_map): New function.
	(autofdo_source_profile::update_inlined_ind_target): New function.
	(get_relative_location_for_stmt): New function.
	(has_indirect_call): New function.
	(afdo_get_bb_count): New parameter.
	(afdo_vpt_for_early_inline): New function.
	(afdo_annotate_cfg): New parameter.
	* gcc/passes.c (init_optimization_passes): Change order.
	* gcc/value-prof.c (check_ic_target): Change scope.
	* gcc/ipa-inline.c (early_inliner): Change scope.
	* gcc/ipa-inline.h (early_inliner): New declaration.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/google@203445 138bc75d-0d04-0410-961f-82ee72b054a4