mie: implement instruction selection graph generation for binary ops and load/store

mie/select/binary-op.c

@@ -0,0 +1,54 @@
+#include "builder.h"
+
+#include <mie/ir/op.h>
+#include <mie/select/graph.h>
+
+#define DEFINE_PUSH_FUNCTION(name, op)                                         \
+	static enum mie_status push_##name(                                    \
+		struct mie_select_builder *builder, struct mie_instr *instr)   \
+	{                                                                      \
+		return push_op(op, builder, instr);                            \
+	}
+
+#define DEFINE_OP(name)                                                        \
+	struct select_instr_type select_##name = {                             \
+		.i_push = push_##name,                                         \
+	}
+
+static enum mie_status push_op(
+	unsigned int opcode, struct mie_select_builder *builder,
+	struct mie_instr *instr)
+{
+	struct mie_binary_op *op = (struct mie_binary_op *)instr;
+
+	struct mie_select_value *operands[] = {
+		select_builder_get_value(builder, op->op_left),
+		select_builder_get_value(builder, op->op_right),
+	};
+	size_t nr_operands = sizeof operands / sizeof operands[0];
+
+	struct mie_type *result[] = {
+		op->op_type,
+	};
+	size_t nr_results = sizeof result / sizeof result[0];
+
+	struct mie_select_value node = {0};
+	enum mie_status status = mie_select_graph_get_node(
+		mie_select_builder_get_graph(builder), opcode, operands,
+		nr_operands, result, nr_results, &node);
+	if (status != MIE_SUCCESS) {
+		return status;
+	}
+
+	return select_builder_set_value(builder, MIE_VALUE(instr), &node);
+}
+
+DEFINE_PUSH_FUNCTION(add, MIE_SELECT_OP_ADD);
+DEFINE_PUSH_FUNCTION(sub, MIE_SELECT_OP_SUB);
+DEFINE_PUSH_FUNCTION(mul, MIE_SELECT_OP_MUL);
+DEFINE_PUSH_FUNCTION(div, MIE_SELECT_OP_DIV);
+
+DEFINE_OP(add);
+DEFINE_OP(sub);
+DEFINE_OP(mul);
+DEFINE_OP(div);