AMD64: Set register requirements when turning back address mode.

ir/be/amd64/amd64_finish.c

@@ -132,8 +132,8 @@ static ir_node *amd64_turn_back_am(ir_node *node)
 	amd64_addr_t new_addr = attr->addr;
 	ir_node *load_in[3];
 	int      load_arity = 0;
-	if (attr->addr.base_input != NO_INPUT
-	 && attr->addr.base_input != RIP_INPUT) {
+	if (attr->addr.base_input != NO_INPUT &&
+	    attr->addr.base_input != RIP_INPUT) {
 		new_addr.base_input = load_arity;
 		load_in[load_arity++] = get_irn_n(node, attr->addr.base_input);
 	}
@@ -148,6 +148,7 @@ static ir_node *amd64_turn_back_am(ir_node *node)
 	ir_node *load = new_bd_amd64_mov_gp(dbgi, block, load_arity, load_in,
 	                                    attr->insn_mode, AMD64_OP_ADDR,
 	                                    new_addr);
+	arch_set_irn_register_reqs_in(load, gp_am_reqs[load_arity - 1]);
 	ir_node *load_res = new_r_Proj(load, mode_Lu, pn_amd64_mov_gp_res);
 
 	/* change operation */

ir/be/amd64/amd64_transform.c

@@ -297,7 +297,7 @@ static const arch_register_req_t *xmm_xmm_reqs[] = {
 	&amd64_requirement_xmm,
 };
 
-static arch_register_req_t const **const gp_am_reqs[] = {
+arch_register_req_t const **const gp_am_reqs[] = {
 	mem_reqs,
 	reg_mem_reqs,
 	reg_reg_mem_reqs,

ir/be/amd64/amd64_transform.h

@@ -17,6 +17,7 @@ extern const x86_clobber_name_t        amd64_additional_clobber_names[];
 extern const x86_asm_constraint_list_t amd64_asm_constraints;
 
 extern arch_register_req_t const *amd64_xmm_reqs[];
+extern arch_register_req_t const **const gp_am_reqs[];
 
 void amd64_init_transform(void);