const arm_isa_t *isa = self;
/* ARGH! is called BEFORE transform */
- return 2;
+ return N_CLASSES;
return isa->cg->have_fp_insn ? 2 : 1;
}
*/
static const arch_register_class_t *arm_get_reg_class(const void *self, int i) {
(void) self;
- return i == 0 ? &arm_reg_classes[CLASS_arm_gp] : &arm_reg_classes[CLASS_arm_fpa];
+ return &arm_reg_classes[i];
}
/**
ir_node *lr = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_LR]);
ir_node *pc = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_PC]);
- if(env->flags.try_omit_fp)
+ if (env->flags.try_omit_fp)
return env->isa->sp;
- ip = be_new_Copy(gp, irg, block, sp );
+ ip = be_new_Copy(gp, irg, block, sp);
arch_set_irn_register(env->arch_env, ip, &arm_gp_regs[REG_R12]);
be_set_constr_single_reg(ip, BE_OUT_POS(0), &arm_gp_regs[REG_R12] );
return env->isa->bp;
}
+/**
+ * Builds the ARM epilogue
+ */
static void arm_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_map) {
arm_abi_env_t *env = self;
ir_node *curr_sp = be_abi_reg_map_get(reg_map, env->isa->sp);
return NULL;
}
+/**
+ * Allows or disallows the creation of Psi nodes for the given Phi nodes.
+ * @return 1 if allowed, 0 otherwise
+ */
+static int arm_is_psi_allowed(ir_node *sel, ir_node *phi_list, int i, int j) {
+ ir_node *cmp, *cmp_a, *phi;
+ ir_mode *mode;
+
+
+ /* currently Psi support is not implemented */
+ return 0;
+
+/* we don't want long long Psi */
+#define IS_BAD_PSI_MODE(mode) (!mode_is_float(mode) && get_mode_size_bits(mode) > 32)
+
+ if (get_irn_mode(sel) != mode_b)
+ return 0;
+
+ cmp = get_Proj_pred(sel);
+ cmp_a = get_Cmp_left(cmp);
+ mode = get_irn_mode(cmp_a);
+
+ if (IS_BAD_PSI_MODE(mode))
+ return 0;
+
+ /* check the Phi nodes */
+ for (phi = phi_list; phi; phi = get_irn_link(phi)) {
+ ir_node *pred_i = get_irn_n(phi, i);
+ ir_node *pred_j = get_irn_n(phi, j);
+ ir_mode *mode_i = get_irn_mode(pred_i);
+ ir_mode *mode_j = get_irn_mode(pred_j);
+
+ if (IS_BAD_PSI_MODE(mode_i) || IS_BAD_PSI_MODE(mode_j))
+ return 0;
+ }
+
+#undef IS_BAD_PSI_MODE
+
+ return 1;
+}
+
/**
* Returns the libFirm configuration parameter for this backend.
*/
static const backend_params *arm_get_libfirm_params(void) {
+ static const opt_if_conv_info_t ifconv = {
+ 4, /* maxdepth, doesn't matter for Psi-conversion */
+ arm_is_psi_allowed /* allows or disallows Psi creation for given selector */
+ };
static arch_dep_params_t ad = {
1, /* allow subs */
1, /* Muls are fast enough on ARM but ... */
NULL, /* will be set later */
NULL, /* but yet no creator function */
NULL, /* context for create_intrinsic_fkt */
- NULL, /* no if conversion settings */
+ NULL, /* will be set below */
};
- p.dep_param = &ad;
+ p.dep_param = &ad;
+ p.if_conv_info = &ifconv;
return &p;
}