gcc/
	* stmt.c (emit_case_bit_tests): Remove.
	(expand_case): Remove expand_switch_using_bit_tests_p code.
	* tree-switch-conversion.c (hoist_edge_and_branch_if_true): New.
	(MAX_CASE_BIT_TESTS): Moved from stmt.c to here.
	(lshift_cheap_p): Likewise.
	(expand_switch_using_bit_tests_p): Likewise.
	(struct case_bit_test): Likewise.
	(case_bit_test_cmp): Likewise.
	(emit_case_bit_tests): New implementation for GIMPLE.
	(gen_inbound_check): Do not release post-dominator info here.
	(process_switch): Reorder code.  Expand as bit tests if it
	looks like a win.
	(do_switchconv): Release post-dominator info here if something
	changed.
	(struct gimple_opt_pass): Verify more.
	* tree.h (expand_switch_using_bit_tests_p): Remove prototype.

testsuite/
	* gcc.dg/tree-ssa/pr36881.c: Fix test case to not expand as bit tests.

From-SVN: r189173