Allow gimple_build with internal functions

This patch makes the function versions of gimple_build and
gimple_simplify take combined_fns rather than built_in_codes,
so that they work with internal functions too.  The old
gimple_builds were unused, so no existing callers need
to be updated.

2018-05-17  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* gimple-fold.h (gimple_build): Make the function forms take
	combined_fn rather than built_in_function.
	(gimple_simplify): Likewise.
	* gimple-match-head.c (gimple_simplify): Likewise.
	* gimple-fold.c (gimple_build): Likewise.
	* tree-vect-loop.c (get_initial_def_for_reduction): Use gimple_build
	rather than gimple_build_call_internal.
	(get_initial_defs_for_reduction): Likewise.
	(vect_create_epilog_for_reduction): Likewise.
	(vectorizable_live_operation): Likewise.

From-SVN: r260315

gcc/ChangeLog

+2018-05-17  Richard Sandiford  <richard.sandiford@linaro.org>
+
+	* gimple-fold.h (gimple_build): Make the function forms take
+	combined_fn rather than built_in_function.
+	(gimple_simplify): Likewise.
+	* gimple-match-head.c (gimple_simplify): Likewise.
+	* gimple-fold.c (gimple_build): Likewise.
+	* tree-vect-loop.c (get_initial_def_for_reduction): Use gimple_build
+	rather than gimple_build_call_internal.
+	(get_initial_defs_for_reduction): Likewise.
+	(vect_create_epilog_for_reduction): Likewise.
+	(vectorizable_live_operation): Likewise.
+
 2018-05-17  Martin Liska  <mliska@suse.cz>
 
 	* gimple-ssa-sprintf.c (format_directive): Do not use

gcc/gimple-fold.c

@@ -7204,14 +7204,20 @@ gimple_build (gimple_seq *seq, location_t loc,
    statements possibly defining it to SEQ.  */
 
 tree
-gimple_build (gimple_seq *seq, location_t loc,
-	      enum built_in_function fn, tree type, tree arg0)
+gimple_build (gimple_seq *seq, location_t loc, combined_fn fn,
+	      tree type, tree arg0)
 {
   tree res = gimple_simplify (fn, type, arg0, seq, gimple_build_valueize);
   if (!res)
     {
-      tree decl = builtin_decl_implicit (fn);
-      gimple *stmt = gimple_build_call (decl, 1, arg0);
+      gcall *stmt;
+      if (internal_fn_p (fn))
+	stmt = gimple_build_call_internal (as_internal_fn (fn), 1, arg0);
+      else
+	{
+	  tree decl = builtin_decl_implicit (as_builtin_fn (fn));
+	  stmt = gimple_build_call (decl, 1, arg0);
+	}
       if (!VOID_TYPE_P (type))
 	{
 	  res = create_tmp_reg_or_ssa_name (type);
@@ -7230,14 +7236,20 @@ gimple_build (gimple_seq *seq, location_t loc,
    statements possibly defining it to SEQ.  */
 
 tree
-gimple_build (gimple_seq *seq, location_t loc,
-	      enum built_in_function fn, tree type, tree arg0, tree arg1)
+gimple_build (gimple_seq *seq, location_t loc, combined_fn fn,
+	      tree type, tree arg0, tree arg1)
 {
   tree res = gimple_simplify (fn, type, arg0, arg1, seq, gimple_build_valueize);
   if (!res)
     {
-      tree decl = builtin_decl_implicit (fn);
-      gimple *stmt = gimple_build_call (decl, 2, arg0, arg1);
+      gcall *stmt;
+      if (internal_fn_p (fn))
+	stmt = gimple_build_call_internal (as_internal_fn (fn), 2, arg0, arg1);
+      else
+	{
+	  tree decl = builtin_decl_implicit (as_builtin_fn (fn));
+	  stmt = gimple_build_call (decl, 2, arg0, arg1);
+	}
       if (!VOID_TYPE_P (type))
 	{
 	  res = create_tmp_reg_or_ssa_name (type);
@@ -7256,16 +7268,22 @@ gimple_build (gimple_seq *seq, location_t loc,
    statements possibly defining it to SEQ.  */
 
 tree
-gimple_build (gimple_seq *seq, location_t loc,
-	      enum built_in_function fn, tree type,
-	      tree arg0, tree arg1, tree arg2)
+gimple_build (gimple_seq *seq, location_t loc, combined_fn fn,
+	      tree type, tree arg0, tree arg1, tree arg2)
 {
   tree res = gimple_simplify (fn, type, arg0, arg1, arg2,
 			      seq, gimple_build_valueize);
   if (!res)
     {
-      tree decl = builtin_decl_implicit (fn);
-      gimple *stmt = gimple_build_call (decl, 3, arg0, arg1, arg2);
+      gcall *stmt;
+      if (internal_fn_p (fn))
+	stmt = gimple_build_call_internal (as_internal_fn (fn),
+					   3, arg0, arg1, arg2);
+      else
+	{
+	  tree decl = builtin_decl_implicit (as_builtin_fn (fn));
+	  stmt = gimple_build_call (decl, 3, arg0, arg1, arg2);
+	}
       if (!VOID_TYPE_P (type))
 	{
 	  res = create_tmp_reg_or_ssa_name (type);

gcc/gimple-fold.h

@@ -86,28 +86,25 @@ gimple_build (gimple_seq *seq,
 {
   return gimple_build (seq, UNKNOWN_LOCATION, code, type, op0, op1, op2);
 }
-extern tree gimple_build (gimple_seq *, location_t,
-			  enum built_in_function, tree, tree);
+extern tree gimple_build (gimple_seq *, location_t, combined_fn, tree, tree);
 inline tree
-gimple_build (gimple_seq *seq,
-	      enum built_in_function fn, tree type, tree arg0)
+gimple_build (gimple_seq *seq, combined_fn fn, tree type, tree arg0)
 {
   return gimple_build (seq, UNKNOWN_LOCATION, fn, type, arg0);
 }
-extern tree gimple_build (gimple_seq *, location_t,
-			  enum built_in_function, tree, tree, tree);
+extern tree gimple_build (gimple_seq *, location_t, combined_fn,
+			  tree, tree, tree);
 inline tree
-gimple_build (gimple_seq *seq,
-	      enum built_in_function fn, tree type, tree arg0, tree arg1)
+gimple_build (gimple_seq *seq, combined_fn fn,
+	      tree type, tree arg0, tree arg1)
 {
   return gimple_build (seq, UNKNOWN_LOCATION, fn, type, arg0, arg1);
 }
-extern tree gimple_build (gimple_seq *, location_t,
-			  enum built_in_function, tree, tree, tree, tree);
+extern tree gimple_build (gimple_seq *, location_t, combined_fn,
+			  tree, tree, tree, tree);
 inline tree
-gimple_build (gimple_seq *seq,
-	      enum built_in_function fn, tree type,
-	      tree arg0, tree arg1, tree arg2)
+gimple_build (gimple_seq *seq, combined_fn fn,
+	      tree type, tree arg0, tree arg1, tree arg2)
 {
   return gimple_build (seq, UNKNOWN_LOCATION, fn, type, arg0, arg1, arg2);
 }
@@ -153,11 +150,11 @@ extern tree gimple_simplify (enum tree_code, tree, tree, tree,
 			     gimple_seq *, tree (*)(tree));
 extern tree gimple_simplify (enum tree_code, tree, tree, tree, tree,
 			     gimple_seq *, tree (*)(tree));
-extern tree gimple_simplify (enum built_in_function, tree, tree,
+extern tree gimple_simplify (combined_fn, tree, tree,
 			     gimple_seq *, tree (*)(tree));
-extern tree gimple_simplify (enum built_in_function, tree, tree, tree,
+extern tree gimple_simplify (combined_fn, tree, tree, tree,
 			     gimple_seq *, tree (*)(tree));
-extern tree gimple_simplify (enum built_in_function, tree, tree, tree, tree,
+extern tree gimple_simplify (combined_fn, tree, tree, tree, tree,
 			     gimple_seq *, tree (*)(tree));
 
 #endif  /* GCC_GIMPLE_FOLD_H */

gcc/gimple-match-head.c

@@ -478,55 +478,53 @@ gimple_simplify (enum tree_code code, tree type,
   return maybe_push_res_to_seq (rcode, type, ops, seq);
 }
 
-/* Builtin function with one argument.  */
+/* Builtin or internal function with one argument.  */
 
 tree
-gimple_simplify (enum built_in_function fn, tree type,
+gimple_simplify (combined_fn fn, tree type,
 		 tree arg0,
 		 gimple_seq *seq, tree (*valueize)(tree))
 {
   if (constant_for_folding (arg0))
     {
-      tree res = fold_const_call (as_combined_fn (fn), type, arg0);
+      tree res = fold_const_call (fn, type, arg0);
       if (res && CONSTANT_CLASS_P (res))
 	return res;
     }
 
   code_helper rcode;
   tree ops[3] = {};
-  if (!gimple_simplify (&rcode, ops, seq, valueize,
-			as_combined_fn (fn), type, arg0))
+  if (!gimple_simplify (&rcode, ops, seq, valueize, fn, type, arg0))
     return NULL_TREE;
   return maybe_push_res_to_seq (rcode, type, ops, seq);
 }
 
-/* Builtin function with two arguments.  */
+/* Builtin or internal function with two arguments.  */
 
 tree
-gimple_simplify (enum built_in_function fn, tree type,
+gimple_simplify (combined_fn fn, tree type,
 		 tree arg0, tree arg1,
 		 gimple_seq *seq, tree (*valueize)(tree))
 {
   if (constant_for_folding (arg0)
       && constant_for_folding (arg1))
     {
-      tree res = fold_const_call (as_combined_fn (fn), type, arg0, arg1);
+      tree res = fold_const_call (fn, type, arg0, arg1);
       if (res && CONSTANT_CLASS_P (res))
 	return res;
     }
 
   code_helper rcode;
   tree ops[3] = {};
-  if (!gimple_simplify (&rcode, ops, seq, valueize,
-			as_combined_fn (fn), type, arg0, arg1))
+  if (!gimple_simplify (&rcode, ops, seq, valueize, fn, type, arg0, arg1))
     return NULL_TREE;
   return maybe_push_res_to_seq (rcode, type, ops, seq);
 }
 
-/* Builtin function with three arguments.  */
+/* Builtin or internal function with three arguments.  */
 
 tree
-gimple_simplify (enum built_in_function fn, tree type,
+gimple_simplify (combined_fn fn, tree type,
 		 tree arg0, tree arg1, tree arg2,
 		 gimple_seq *seq, tree (*valueize)(tree))
 {
@@ -534,7 +532,7 @@ gimple_simplify (enum built_in_function fn, tree type,
       && constant_for_folding (arg1)
       && constant_for_folding (arg2))
     {
-      tree res = fold_const_call (as_combined_fn (fn), type, arg0, arg1, arg2);
+      tree res = fold_const_call (fn, type, arg0, arg1, arg2);
       if (res && CONSTANT_CLASS_P (res))
 	return res;
     }
@@ -542,7 +540,7 @@ gimple_simplify (enum built_in_function fn, tree type,
   code_helper rcode;
   tree ops[3] = {};
   if (!gimple_simplify (&rcode, ops, seq, valueize,
-			as_combined_fn (fn), type, arg0, arg1, arg2))
+			fn, type, arg0, arg1, arg2))
     return NULL_TREE;
   return maybe_push_res_to_seq (rcode, type, ops, seq);
 }

gcc/tree-vect-loop.c

@@ -4181,12 +4181,10 @@ get_initial_def_for_reduction (gimple *stmt, tree init_val,
 	else if (!TYPE_VECTOR_SUBPARTS (vectype).is_constant ())
 	  {
 	    /* Option2 (variable length): the first element is INIT_VAL.  */
-	    init_def = build_vector_from_val (vectype, def_for_init);
-	    gcall *call = gimple_build_call_internal (IFN_VEC_SHL_INSERT,
-						      2, init_def, init_val);
-	    init_def = make_ssa_name (vectype);
-	    gimple_call_set_lhs (call, init_def);
-	    gimple_seq_add_stmt (&stmts, call);
+	    init_def = gimple_build_vector_from_val (&stmts, vectype,
+						     def_for_init);
+	    init_def = gimple_build (&stmts, CFN_VEC_SHL_INSERT,
+				     vectype, init_def, init_val);
 	  }
 	else
 	  {
@@ -4329,11 +4327,8 @@ get_initial_defs_for_reduction (slp_tree slp_node,
 		  while (k > 0)
 		    {
 		      k -= 1;
-		      gcall *call = gimple_build_call_internal
-			(IFN_VEC_SHL_INSERT, 2, init, elts[k]);
-		      init = make_ssa_name (vector_type);
-		      gimple_call_set_lhs (call, init);
-		      gimple_seq_add_stmt (&ctor_seq, call);
+		      init = gimple_build (&ctor_seq, CFN_VEC_SHL_INSERT,
+					   vector_type, init, elts[k]);
 		    }
 		}
 	      else
@@ -5236,10 +5231,8 @@ vect_create_epilog_for_reduction (vec<tree> vect_defs, gimple *stmt,
 				   sel, new_phi_result, vector_identity);
 
 	  /* Do the reduction and convert it to the appropriate type.  */
-	  gcall *call = gimple_build_call_internal (reduc_fn, 1, vec);
-	  tree scalar = make_ssa_name (TREE_TYPE (vectype));
-	  gimple_call_set_lhs (call, scalar);
-	  gimple_seq_add_stmt (&seq, call);
+	  tree scalar = gimple_build (&seq, as_combined_fn (reduc_fn),
+				      TREE_TYPE (vectype), vec);
 	  scalar = gimple_convert (&seq, scalar_type, scalar);
 	  scalar_results.safe_push (scalar);
 	}
@@ -8054,13 +8047,10 @@ vectorizable_live_operation (gimple *stmt,
 	 the loop mask for the final iteration.  */
       gcc_assert (ncopies == 1 && !slp_node);
       tree scalar_type = TREE_TYPE (STMT_VINFO_VECTYPE (stmt_info));
-      tree scalar_res = make_ssa_name (scalar_type);
       tree mask = vect_get_loop_mask (gsi, &LOOP_VINFO_MASKS (loop_vinfo),
 				      1, vectype, 0);
-      gcall *new_stmt = gimple_build_call_internal (IFN_EXTRACT_LAST,
-						    2, mask, vec_lhs);
-      gimple_call_set_lhs (new_stmt, scalar_res);
-      gimple_seq_add_stmt (&stmts, new_stmt);
+      tree scalar_res = gimple_build (&stmts, CFN_EXTRACT_LAST,
+				      scalar_type, mask, vec_lhs);
 
       /* Convert the extracted vector element to the required scalar type.  */
       new_tree = gimple_convert (&stmts, lhs_type, scalar_res);