Allow loading of stack parameters with a different mode than the parameter mode....

[libfirm] / ir / be / ia32 / ia32_map_regs.c

diff --git a/ir/be/ia32/ia32_map_regs.c b/ir/be/ia32/ia32_map_regs.c
index e5a6f0e..2083d25 100644 (file)
--- a/ir/be/ia32/ia32_map_regs.c
+++ b/ir/be/ia32/ia32_map_regs.c
@@ -96,6 +96,7 @@ struct ia32_irn_reg_assoc {
 int ia32_cmp_irn_reg_assoc(const void *a, const void *b, size_t len) {
        const struct ia32_irn_reg_assoc *x = a;
        const struct ia32_irn_reg_assoc *y = b;
+       (void) len;
 
        return x->irn != y->irn;
 }
@@ -162,7 +163,7 @@ const char *ia32_get_mapped_reg_name(pmap *reg_map, const arch_register_t *reg)
  * Returns the register for parameter nr.
  */
 const arch_register_t *ia32_get_RegParam_reg(ia32_code_gen_t *cg, unsigned cc,
-                                             size_t nr, ir_mode *mode)
+                                             size_t nr, const ir_mode *mode)
 {
        if(! (cc & cc_reg_param))
                return NULL;
@@ -178,6 +179,9 @@ const arch_register_t *ia32_get_RegParam_reg(ia32_code_gen_t *cg, unsigned cc,
                }
                return fpreg_sse_param_reg_std[nr];
        } else if(mode_is_int(mode) || mode_is_reference(mode)) {
+               if(get_mode_size_bits(mode) > 32)
+                       return NULL;
+
                if(nr >= MAXNUM_GPREG_ARGS)
                        return NULL;