fixed binop emitter for Source AM

[libfirm] / ir / be / ia32 / ia32_transform.c

diff --git a/ir/be/ia32/ia32_transform.c b/ir/be/ia32/ia32_transform.c
index c3b6984..5108be1 100644 (file)
--- a/ir/be/ia32/ia32_transform.c
+++ b/ir/be/ia32/ia32_transform.c
@@ -1949,6 +1949,30 @@ static ir_node *gen_be_FrameStore(ia32_transform_env_t *env) {
        return new_op;
 }
 
+/**
+ * This function just sets the register for the Unknown node
+ * as this is not done during register allocation because Unknown
+ * is an "ignore" node.
+ */
+static ir_node *gen_Unknown(ia32_transform_env_t *env) {
+       ir_mode *mode = env->mode;
+       ir_node *irn  = env->irn;
+
+       if (mode_is_float(mode)) {
+               if (USE_SSE2(env->cg))
+                       arch_set_irn_register(env->cg->arch_env, irn, &ia32_xmm_regs[REG_XMM_UKNWN]);
+               else
+                       arch_set_irn_register(env->cg->arch_env, irn, &ia32_vfp_regs[REG_VFP_UKNWN]);
+       }
+       else if (mode_is_int(mode) || mode_is_reference(mode)) {
+               arch_set_irn_register(env->cg->arch_env, irn, &ia32_gp_regs[REG_GP_UKNWN]);
+       }
+       else {
+               assert(0 && "unsupported Unknown-Mode");
+       }
+
+       return NULL;
+}
 
 
 /*********************************************************
@@ -2207,7 +2231,6 @@ void ia32_register_transformers(void) {
        IGN(IJmp);
        IGN(Break);
        IGN(Cmp);
-       IGN(Unknown);
 
        /* constant transformation happens earlier */
        IGN(Const);
@@ -2233,6 +2256,9 @@ void ia32_register_transformers(void) {
        GEN(be_FrameStore);
        GEN(be_StackParam);
 
+       /* set the register for all Unknown nodes */
+       GEN(Unknown);
+
        op_Max = get_op_Max();
        if (op_Max)
                GEN(Max);