gimplify.h (get_initialized_tmp_var): Add allow_ssa parameter default true.

2016-05-03  Richard Biener  <rguenther@suse.de>

	* gimplify.h (get_initialized_tmp_var): Add allow_ssa parameter
	default true.
	(gimplify_arg): Likewise.
	* gimplify.c (gimplify_expr): Add overload with allow_ssa parameter,
	re-writing the result to a decl if required.
	(internal_get_tmp_var): Add allow_ssa parameter
	and override into_ssa with it.
	(get_formal_tmp_var): Adjust.
	(get_initialized_tmp_var): Add allow_ssa parameter.
	(gimplify_arg): Add allow_ssa parameter and avoid generating
	SSA names for the result false.
	(gimplify_call_expr): If the call may return twice do not
	gimplify parameters into SSA.
	(prepare_gimple_addressable): Do not allow an SSA name as
	temporary.
	(gimplify_modify_expr): Adjust assert.  For noreturn calls
	with a SSA name LHS adjust its def.
	(gimplify_save_expr): Do not allow an SSA name as save-expr
	result.
	(gimplify_one_sizepos): Do not allow an SSA name as a sizepos.
	(gimplify_body): Init GIMPLE SSA data structures and gimplify
	into-SSA.
	(gimplify_scan_omp_clauses): Make sure OMP_CLAUSE_SIZE is not
	an SSA name.  Likewise for OMP_CLAUSE_REDUCTION operands.
	(gimplify_omp_for): Likewise for OMP_CLAUSE_DECL.  Likewise
	for OMP_FOR_COND,  OMP_FOR_INCR and OMP_CLAUSE_LINEAR_STEP.
	(optimize_target_teams): Do not allow SSA names for clause operands.
	(gimplify_expr): Likewise for where we mark the result addressable.
	* passes.def (pass_init_datastructures): Remove.
	* tree-into-ssa.c (mark_def_sites): Ignore existing SSA names.
	(rewrite_stmt): Likewise.
	* tree-inline.c (initialize_cfun): Properly transfer SSA state.
	(replace_locals_op): Replace SSA names.
	(copy_gimple_seq_and_replace_locals): Init src_cfun.
	* gimple-low.c (lower_builtin_setjmp): Deal with SSA.
	* cgraph.c (release_function_body): Free CFG annotations only
	when we have a CFG.  Simplify.
	* gimple-fold.c (gimplify_and_update_call_from_tree): Use
	force_gimple_operand instead of get_initialized_tmp_var.
	* tree-pass.h (make_pass_init_datastructures): Remove.
	* tree-ssa.c (execute_init_datastructures): Remove.
	(pass_data_init_datastructures): Likewise.
	(class pass_init_datastructures): Likewise.
	(make_pass_init_datastructures): Likewise.
	* omp-low.c (create_omp_child_function): Init SSA data structures.
	(grid_expand_target_grid_body): Likewise.
	* tree-cfg.c (move_block_to_fn): Double-check the DEF is an SSA
	name before adding it to names_to_release.
	(remove_bb): Always release SSA defs.
	* tree-ssa-ccp.c (get_default_value): Check SSA_NAME_VAR
	before dereferencing it.
	* cgraphunit.c (init_lowered_empty_function): Always
	int SSA data structures.
	* tree-ssanames.c (release_defs): Remove assert that we are in
	SSA form.
	* trans-mem.c (diagnose_tm_1): Handle SSA name function.

	c-family/
	* cilk.c (cilk_gimplify_call_params_in_spawned_fn): Do not
	allow call args to gimplify to SSA names.

	* gcc.dg/pr30172-1.c: Adjust.
	* gcc.dg/pr63743.c: Likewise.
	* gcc.dg/tm/pr51696.c: Likewise.
	* c-c++-common/tm/safe-1.c: Likewise.
	* gcc.dg/tree-prof/val-prof-3.c: Likewise.
	* gcc.dg/plugin/self-assign-test-1.c: XFAIL case that needs CSE.
	* g++.dg/plugin/self-assign-test-1.C: Likewise.
	* g++.dg/plugin/self-assign-test-2.C: Likewise.

From-SVN: r235817

1 files changed, 18 insertions, 22 deletions

diff --git a/gcc/cgraph.c b/gcc/cgraph.c
index d93a939..3105aec 100644
--- a/gcc/cgraph.c
+++ b/gcc/cgraph.c
@@ -1729,30 +1729,26 @@ release_function_body (tree decl)
   if (fn)
     {
       if (fn->cfg
-	  || fn->gimple_df)
+	  && loops_for_fn (fn))
 	{
-	  if (fn->cfg
-	      && loops_for_fn (fn))
-	    {
-	      fn->curr_properties &= ~PROP_loops;
-	      loop_optimizer_finalize (fn);
-	    }
-	  if (fn->gimple_df)
-	    {
-	      delete_tree_ssa (fn);
-	      delete_tree_cfg_annotations (fn);
-	      fn->eh = NULL;
-	    }
-	  if (fn->cfg)
-	    {
-	      gcc_assert (!dom_info_available_p (fn, CDI_DOMINATORS));
-	      gcc_assert (!dom_info_available_p (fn, CDI_POST_DOMINATORS));
-	      clear_edges (fn);
-	      fn->cfg = NULL;
-	    }
-	  if (fn->value_histograms)
-	    free_histograms (fn);
+	  fn->curr_properties &= ~PROP_loops;
+	  loop_optimizer_finalize (fn);
+	}
+      if (fn->gimple_df)
+	{
+	  delete_tree_ssa (fn);
+	  fn->eh = NULL;
+	}
+      if (fn->cfg)
+	{
+	  gcc_assert (!dom_info_available_p (fn, CDI_DOMINATORS));
+	  gcc_assert (!dom_info_available_p (fn, CDI_POST_DOMINATORS));
+	  delete_tree_cfg_annotations (fn);
+	  clear_edges (fn);
+	  fn->cfg = NULL;
 	}
+      if (fn->value_histograms)
+	free_histograms (fn);
       gimple_set_body (decl, NULL);
       /* Struct function hangs a lot of data that would leak if we didn't
          removed all pointers to it.   */