Correct inaccurate comment: The only corner case of wrong CF in NEG+ADD as replacemen...

[libfirm] / ir / be / ia32 / ia32_fpu.c

diff --git a/ir/be/ia32/ia32_fpu.c b/ir/be/ia32/ia32_fpu.c
index 5e3b547..b6bafb5 100644 (file)
--- a/ir/be/ia32/ia32_fpu.c
+++ b/ir/be/ia32/ia32_fpu.c
@@ -87,7 +87,6 @@ static void create_fpcw_entities(void)
 static ir_node *create_fpu_mode_spill(void *env, ir_node *state, int force,
                                       ir_node *after)
 {
-       ir_node *spill = NULL;
        (void) env;
 
        /* we don't spill the fpcw in unsafe mode */
@@ -107,17 +106,18 @@ static ir_node *create_fpu_mode_spill(void *env, ir_node *state, int force,
                ir_node *noreg = ia32_new_NoReg_gp(irg);
                ir_node *nomem = get_irg_no_mem(irg);
                ir_node *frame = get_irg_frame(irg);
-
-               spill = new_bd_ia32_FnstCW(NULL, block, frame, noreg, nomem, state);
+               ir_node *spill
+                       = new_bd_ia32_FnstCW(NULL, block, frame, noreg, nomem, state);
                set_ia32_op_type(spill, ia32_AddrModeD);
                /* use mode_Iu, as movl has a shorter opcode than movw */
                set_ia32_ls_mode(spill, mode_Iu);
                set_ia32_use_frame(spill);
 
                sched_add_after(skip_Proj(after), spill);
+               return spill;
        }
 
-       return spill;
+       return NULL;
 }
 
 static ir_node *create_fldcw_ent(ir_node *block, ir_entity *entity)