more support for Mulh nodes

[r15752]

include/libfirm/irnode.h

@@ -693,6 +693,11 @@ void     set_Mul_left(ir_node *node, ir_node *left);
 ir_node *get_Mul_right(const ir_node *node);
 void     set_Mul_right(ir_node *node, ir_node *right);
 
+ir_node *get_Mulh_left(const ir_node *node);
+void     set_Mulh_left(ir_node *node, ir_node *left);
+ir_node *get_Mulh_right(const ir_node *node);
+void     set_Mulh_right(ir_node *node, ir_node *right);
+
 ir_node *get_Quot_left(const ir_node *node);
 void     set_Quot_left(ir_node *node, ir_node *left);
 ir_node *get_Quot_right(const ir_node *node);
@@ -1256,6 +1261,8 @@ int      is_Call(const ir_node *node);
 int      is_Sel(const ir_node *node);
 /** Returns true if node is a Mul node. */
 int      is_Mul(const ir_node *node);
+/** Returns true if node is a Mulh node. */
+int      is_Mulh(const ir_node *node);
 /** Returns true if node is a Mux node or a Psi with only one condition. */
 int      is_Mux(const ir_node *node);
 /** Returns true if node is a Load node. */

ir/ir/irnode.c

@@ -1463,6 +1463,7 @@ BINOP(Add)
 BINOP(Sub)
 UNOP(Minus)
 BINOP(Mul)
+BINOP(Mulh)
 DIVOP(Quot)
 DIVOP(DivMod)
 DIVOP(Div)

ir/ir/irnode_t.h

@@ -568,6 +568,12 @@ _is_Mul(const ir_node *node) {
 	return (_get_irn_op(node) == op_Mul);
 }
 
+static INLINE int
+_is_Mulh(const ir_node *node) {
+	assert(node);
+	return (_get_irn_op(node) == op_Mulh);
+}
+
 static INLINE int
 _is_Mux(const ir_node *node) {
 	assert(node);
@@ -878,6 +884,7 @@ static INLINE void _set_irn_dbg_info(ir_node *n, dbg_info *db) {
 #define is_Call(node)                         _is_Call(node)
 #define is_Sel(node)                          _is_Sel(node)
 #define is_Mul(node)                          _is_Mul(node)
+#define is_Mulh(node)                         _is_Mulh(node)
 #define is_Mux(node)                          _is_Mux(node)
 #define is_Load(node)                         _is_Load(node)
 #define is_Sync(node)                         _is_Sync(node)