2011-05-04 Sriraman Tallam <tmsriram@google.com>

2011-05-04  Sriraman Tallam  <tmsriram@google.com>

	* tree-pass.h (pass_tree_convert_builtin_dispatch): New pass.
	(pass_ipa_multiversion_dispatch): New pass.
	* builtin-types.def (BT_PTR_FN_INT): New pointer type.
	(BT_FN_INT_PTR_FN_INT_PTR_PTR_VAR): New function type for __builtin_dispatch.
	* builtins.def (BUILT_IN_DISPATCH): New builtin to
	support multi-version calls.
	* mversn-dispatch.c: New file.
	* timevar.def (TV_MVERSN_DISPATCH): New time var.
	* common.opt (fclone-hot-version-paths): New flag.
	* Makefile.in (mversn-dispatch.o): New rule.
	* passes.c (init_optimization_passes): Add the new
	multi-version and dispatch passes to the pass list.
	* params.def (PARAM_NUMBER_OF_MVERSN_CLONES): Define.
	(PARAM_MVERSN_CLONE_CGRAPH_DEPTH): Define.
	* doc/invoke.texi (mversn-clone-depth): Document.
	(num-mversn-clones): Document.
	(fclone-hot-version-paths): Document.
	* c-family/c-common.c (handle_version_selector_attribute): New function.
	(c_common_attribute_table): New attribute "version_selector".
	* testsuite/gcc.dg/mversn7.c: New test.
	* testsuite/gcc.dg/mversn4.c: New test.
	* testsuite/gcc.dg/mversn4.h: New test.
	* testsuite/gcc.dg/mversn4a.c: New test.
	* testsuite/gcc.dg/torture/mversn1.c: New test.
	* testsuite/gcc.dg/mversn2.c: New test.
	* testsuite/gcc.dg/mversn6.c: New test.
	* testsuite/gcc.dg/mversn3.c: New test.
	* testsuite/g++.dg/mversn8.C: New test.
	* testsuite/g++.dg/mversn10a.C: New test.
	* testsuite/g++.dg/mversn14a.C: New test.
	* testsuite/g++.dg/tree-prof/mversn13.C: New test.
	* testsuite/g++.dg/tree-prof/mversn15.C: New test.
	* testsuite/g++.dg/tree-prof/mversn15a.C: New test.
	* testsuite/g++.dg/mversn9.C: New test.
	* testsuite/g++.dg/mversn10.C: New test.
	* testsuite/g++.dg/mversn12.C: New test.
	* testsuite/g++.dg/mversn14.C: New test.
	* testsuite/g++.dg/mversn16.C: New test.
	* testsuite/g++.dg/torture/mversn11.C: New test.
	* testsuite/g++.dg/torture/mversn5.C: New test.
	* testsuite/g++.dg/torture/mversn5.h: New test.
	* testsuite/g++.dg/torture/mversn5a.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/google@173398 138bc75d-0d04-0410-961f-82ee72b054a4