From cb24521686308314fadcd96cdfd23858aa19aa95 Mon Sep 17 00:00:00 2001
From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 12 Apr 2010 15:20:48 +0000
Subject: 2010-04-12  Richard Guenther  <rguenther@suse.de>

	* gsstruct.def (GSS_CALL): New.
	* gimple.def (GIMPLE_CALL): Change to GSS_CALL.
	* gimple.h: Include tree-ssa-alias.h.
	(struct gimple_statement_call): New.
	(union gimple_statement_struct_d): Add gimple_call member.
	(gimple_call_reset_alias_info): Declare.
	(gimple_call_use_set): New function.
	(gimple_call_clobber_set): Likewise.
	* Makefile.in (GIMPLE_H): Add tree-ssa-alias.h.
	* gimple.c (gimple_call_reset_alias_info): New function.
	(gimple_build_call_1): Call it.
	* lto-streamer-in.c (input_gimple_stmt): Likewise.
	* tree-inline.c (remap_gimple_stmt): Likewise.
	(expand_call_inline): Remove callused handling.
	* cfgexpand.c (update_alias_info_with_stack_vars): Likewise.
	* tree-dfa.c (dump_variable): Likewise.
	* tree-parloops.c (parallelize_loops): Likewise.
	* tree-ssa.c (init_tree_ssa): Likewise.
	(delete_tree_ssa): Likewise.
	* tree-flow-inline.h (is_call_used): Remove.
	* tree-flow.h (struct gimple_df): Remove callused member.
	* tree-nrv.c (dest_safe_for_nrv_p): Adjust predicate.
	* tree-ssa-alias.c (dump_alias_info): Remove callused handling.
	(ref_maybe_used_by_call_p_1): Simplify.
	(call_may_clobber_ref_p_1): Likewise.
	* tree-ssa-structalias.c (compute_points_to_sets): Set
	the call stmt used and clobbered sets.
	* tree-tailcall.c (suitable_for_tail_opt_p): Adjust predicate.
	(find_tail_calls): Verify the tail call.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158226 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/gimple.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'gcc/gimple.c')

diff --git a/gcc/gimple.c b/gcc/gimple.c
index ae0be4e86bc..ce1f75a884e 100644
--- a/gcc/gimple.c
+++ b/gcc/gimple.c
@@ -198,6 +198,21 @@ gimple_build_return (tree retval)
   return s;
 }
 
+/* Reset alias information on call S.  */
+
+void
+gimple_call_reset_alias_info (gimple s)
+{
+  if (gimple_call_flags (s) & ECF_CONST)
+    memset (gimple_call_use_set (s), 0, sizeof (struct pt_solution));
+  else
+    pt_solution_reset (gimple_call_use_set (s));
+  if (gimple_call_flags (s) & (ECF_CONST|ECF_PURE|ECF_NOVOPS))
+    memset (gimple_call_clobber_set (s), 0, sizeof (struct pt_solution));
+  else
+    pt_solution_reset (gimple_call_clobber_set (s));
+}
+
 /* Helper for gimple_build_call, gimple_build_call_vec and
    gimple_build_call_from_tree.  Build the basic components of a
    GIMPLE_CALL statement to function FN with NARGS arguments.  */
@@ -209,6 +224,7 @@ gimple_build_call_1 (tree fn, unsigned nargs)
   if (TREE_CODE (fn) == FUNCTION_DECL)
     fn = build_fold_addr_expr (fn);
   gimple_set_op (s, 1, fn);
+  gimple_call_reset_alias_info (s);
   return s;
 }
 
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