we can't pass 64bit values in a single register

[r15408]

diff --git a/ir/be/ia32/ia32_map_regs.c b/ir/be/ia32/ia32_map_regs.c
index 5bec80b..2083d25 100644 (file)
--- a/ir/be/ia32/ia32_map_regs.c
+++ b/ir/be/ia32/ia32_map_regs.c
@@ -179,6 +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;