added support for 64bit Minus lowering

ir/be/ia32/ia32_intrinsics.c

@@ -233,6 +233,35 @@ static int map_Mul(ir_node *call, void *ctx) {
 	return 1;
 }
 
+/**
+ * Map a Minus (a_l, a_h)
+ */
+static int map_Minus(ir_node *call, void *ctx) {
+	ir_graph *irg        = current_ir_graph;
+	dbg_info *dbg        = get_irn_dbg_info(call);
+	ir_node  *block      = get_nodes_block(call);
+	ir_node  **params    = get_Call_param_arr(call);
+	ir_type  *method     = get_Call_type(call);
+	ir_node  *a_l        = params[BINOP_Left_Low];
+	ir_node  *a_h        = params[BINOP_Left_High];
+	ir_mode  *l_res_mode = get_type_mode(get_method_res_type(method, 0));
+	ir_mode  *h_res_mode = get_type_mode(get_method_res_type(method, 1));
+	ir_node  *l_res, *h_res, *cnst;
+
+	/* l_res = 0 - a_l */
+	l_res = new_rd_ia32_l_Minus(dbg, irg, block, a_l, l_res_mode);
+
+	/* h_res = 0 - a_h - carry */
+
+	/* too bad: we need 0 in a register here */
+	cnst  = new_Const_long(h_res_mode, 0);
+	h_res = new_rd_ia32_l_SubC(dbg, irg, block, cnst, a_h, h_res_mode);
+
+	resolve_call(call, l_res, h_res, irg, block);
+
+	return 1;
+}
+
 /* Ia32 implementation of intrinsic mapping. */
 entity *ia32_create_intrinsic_fkt(ir_type *method, const ir_op *op,
                                   const ir_mode *imode, const ir_mode *omode,

ir/be/ia32/ia32_spec.pl

@@ -517,6 +517,11 @@ else {
   "outs"      => [ "res", "M" ],
 },
 
+"l_Minus" => {
+  "comment"   => "construct lowered Minus: Minus(a) = -a",
+  "arity"     => 1,
+},
+
 "Inc" => {
   "irn_flags" => "R",
   "comment"   => "construct Increment: Inc(a) = a++",

ir/be/ia32/ia32_transform.c

@@ -2264,12 +2264,17 @@ static ir_node *gen_Unknown(ia32_transform_env_t *env) {
  * @param env   The transformation environment
  * @return the created ia32 XXX node
  */
-#define GEN_LOWERED_OP(op) \
+#define GEN_LOWERED_OP(op)                                                                            \
 	static ir_node *gen_ia32_l_##op(ia32_transform_env_t *env) {                                      \
 		return gen_binop(env, get_binop_left(env->irn), get_binop_right(env->irn), new_rd_ia32_##op); \
 	}                                                                                                 \
 
-#define GEN_LOWERED_SHIFT_OP(op) \
+#define GEN_LOWERED_UNOP(op)                                           \
+	static ir_node *gen_ia32_l_##op(ia32_transform_env_t *env) {       \
+		return gen_unop(env, get_unop_op(env->irn), new_rd_ia32_##op); \
+	}                                                                  \
+
+#define GEN_LOWERED_SHIFT_OP(op)                                                                            \
 	static ir_node *gen_ia32_l_##op(ia32_transform_env_t *env) {                                            \
 		return gen_shift_binop(env, get_binop_left(env->irn), get_binop_right(env->irn), new_rd_ia32_##op); \
 	}                                                                                                       \
@@ -2280,6 +2285,8 @@ GEN_LOWERED_OP(SubC)
 GEN_LOWERED_OP(Sub)
 GEN_LOWERED_OP(Mul)
 
+GEN_LOWERED_UNOP(Minus)
+
 /**
  * Transforms a l_MulS into a "real" MulS node.
  *
@@ -2633,6 +2640,7 @@ void ia32_register_transformers(void) {
 	GEN(ia32_l_AddC);
 	GEN(ia32_l_Sub);
 	GEN(ia32_l_SubC);
+	GEN(ia32_l_Minus);
 	GEN(ia32_l_Mul);
 	GEN(ia32_l_MulS);
 	GEN(ia32_l_Shl);