prefalloc will respect alignment when initially assigning registers

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

diff --git a/ir/be/ia32/ia32_fpu.c b/ir/be/ia32/ia32_fpu.c
index bb3ab79..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)
@@ -173,6 +173,7 @@ static ir_node *create_fpu_mode_reload(void *env, ir_node *state,
                ir_mode *lsmode = ia32_reg_classes[CLASS_ia32_fp_cw].mode;
                ir_node *nomem  = get_irg_no_mem(irg);
                ir_node *cwstore, *load, *load_res, *orn, *store, *fldcw;
+               ir_node *store_proj;
                ir_node *or_const;
 
                assert(last_state != NULL);
@@ -204,9 +205,10 @@ static ir_node *create_fpu_mode_reload(void *env, ir_node *state,
                /* use mode_Iu, as movl has a shorter opcode than movw */
                set_ia32_ls_mode(store, mode_Iu);
                set_ia32_use_frame(store);
+               store_proj = new_r_Proj(store, mode_M, pn_ia32_Store_M);
                sched_add_before(before, store);
 
-               fldcw = new_bd_ia32_FldCW(NULL, block, frame, noreg, store);
+               fldcw = new_bd_ia32_FldCW(NULL, block, frame, noreg, store_proj);
                set_ia32_op_type(fldcw, ia32_AddrModeS);
                set_ia32_ls_mode(fldcw, lsmode);
                set_ia32_use_frame(fldcw);