Fixed calculation of register parameters: A register parameter might be NOT the first...

[r14494]

diff --git a/ir/be/ia32/bearch_ia32.c b/ir/be/ia32/bearch_ia32.c
index 95f585d..684d5cf 100644 (file)
--- a/ir/be/ia32/bearch_ia32.c
+++ b/ir/be/ia32/bearch_ia32.c
@@ -1586,7 +1586,7 @@ static void ia32_get_call_abi(const void *self, ir_type *method_type, be_abi_cal
        ir_mode  *mode;
        unsigned  cc        = get_method_calling_convention(method_type);
        int       n         = get_method_n_params(method_type);
-       int       i;
+       int       i, regnum;
        be_abi_call_flags_t call_flags = be_abi_call_get_flags(abi);
 
        unsigned use_push = !IS_P6_ARCH(isa->opt_arch);
@@ -1601,18 +1601,18 @@ static void ia32_get_call_abi(const void *self, ir_type *method_type, be_abi_cal
        /* set parameter passing style */
        be_abi_call_set_flags(abi, call_flags, &ia32_abi_callbacks);
 
-       for (i = 0; i < n; i++) {
+       for (i = regnum = 0; i < n; i++) {
                const ir_mode         *mode;
                const arch_register_t *reg = NULL;
 
                tp   = get_method_param_type(method_type, i);
                mode = get_type_mode(tp);
-               if(mode != NULL) {
-                       reg  = ia32_get_RegParam_reg(isa->cg, cc, i, mode);
+               if (mode != NULL) {
+                       reg  = ia32_get_RegParam_reg(isa->cg, cc, regnum, mode);
                }
-
-               if(reg != NULL) {
+               if (reg != NULL) {
                        be_abi_call_param_reg(abi, i, reg);
+                       ++regnum;
                } else {
                        be_abi_call_param_stack(abi, i, 4, 0, 0);
                }