ia32: Clean up ia32_get_clobber_register().

diff --git a/ir/be/ia32/ia32_common_transform.c b/ir/be/ia32/ia32_common_transform.c
index ef261b8..cafa3af 100644 (file)
--- a/ir/be/ia32/ia32_common_transform.c
+++ b/ir/be/ia32/ia32_common_transform.c
@@ -112,28 +112,17 @@ ir_node *ia32_create_Immediate(ir_graph *const irg, ir_entity *const symconst, i
 
 const arch_register_t *ia32_get_clobber_register(const char *clobber)
 {
-       const arch_register_t       *reg = NULL;
-       int                          c;
-       size_t                       r;
-       const arch_register_class_t *cls;
-
        /* TODO: construct a hashmap instead of doing linear search for clobber
         * register */
-       for (c = 0; c < N_IA32_CLASSES; ++c) {
-               cls = & ia32_reg_classes[c];
-               for (r = 0; r < cls->n_regs; ++r) {
-                       const arch_register_t *temp_reg = arch_register_for_index(cls, r);
-                       if (strcmp(temp_reg->name, clobber) == 0
-                                       || (c == CLASS_ia32_gp && strcmp(temp_reg->name+1, clobber) == 0)) {
-                               reg = temp_reg;
-                               break;
-                       }
+       for (size_t i = 0; i != N_IA32_REGISTERS; ++i) {
+               arch_register_t const *const reg = &ia32_registers[i];
+               if (strcmp(reg->name, clobber) == 0 ||
+                   (reg->reg_class == &ia32_reg_classes[CLASS_ia32_gp] && strcmp(reg->name + 1, clobber) == 0)) {
+                       return reg;
                }
-               if (reg != NULL)
-                       break;
        }
 
-       return reg;
+       return NULL;
 }
 
 int ia32_mode_needs_gp_reg(ir_mode *mode)