Add pass_oacc_ipa

Add pass_oacc_ipa

2015-12-16  Tom de Vries  <tom@codesourcery.com>

	* opts.c (default_options_optimization): Set fipa-pta on by default for
	fopenacc.
	* passes.def: Move kernels pass group to pass_ipa_oacc.
	* tree-pass.h (make_pass_oacc_kernels2): Remove.
	(make_pass_ipa_oacc, make_pass_ipa_oacc_kernels): Declare.
	* tree-ssa-loop.c (pass_oacc_kernels2, make_pass_oacc_kernels2): Remove.
	(pass_ipa_oacc, pass_ipa_oacc_kernels): New pass.
	(make_pass_ipa_oacc, make_pass_ipa_oacc_kernels): New function.
	* tree-ssa-structalias.c (pass_ipa_pta::clone): New function.

	* g++.dg/ipa/devirt-37.C: Update for new fre2 pass.
	* g++.dg/ipa/devirt-40.C: Same.
	* g++.dg/tree-ssa/pr61034.C: Same.
	* gcc.dg/ipa/ipa-pta-1.c: Update for new pta1 pass.
	* gcc.dg/ipa/ipa-pta-10.c: Same.
	* gcc.dg/ipa/ipa-pta-11.c: Same.
	* gcc.dg/ipa/ipa-pta-14.c: Same.
	* gcc.dg/ipa/ipa-pta-16.c: Same.
	* gcc.dg/ipa/ipa-pta-2.c: Same.
	* gcc.dg/ipa/ipa-pta-5.c: Same.
	* gcc.dg/ipa/ipa-pta-6.c: Same.
	* gcc.dg/torture/ipa-pta-1.c: Same.
	* gcc.dg/ipa/ipa-pta-13.c: Update for new fre2 and pta1 pass.
	* gcc.dg/ipa/ipa-pta-3.c: Same.
	* gcc.dg/ipa/ipa-pta-4.c: Same.

From-SVN: r231690