/*
- * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
* @author Boris Boesler, Goetz Lindenmaier, Michael Beck
* @version $Id$
*/
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include "config.h"
#include "lowering.h"
#include "irmode_t.h"
assert(is_Sel(sel));
+ /* Do not lower frame type/global offset table access: must be lowered by the backend. */
+ ptr = get_Sel_ptr(sel);
+ if (ptr == get_irg_frame(current_ir_graph))
+ return;
+
ent = get_Sel_entity(sel);
owner = get_entity_owner(ent);
- /* Do not lower frame type access: must be lowered by the backend. */
- if (is_frame_type(owner))
- return;
-
/*
* Cannot handle value param entities here.
* Must be lowered by the backend.
if (is_value_param_type(owner))
return;
- ptr = get_Sel_ptr(sel);
dbg = get_irn_dbg_info(sel);
mode = get_irn_mode(sel);
sym.entity_p = ent;
bl = get_nodes_block(sel);
- cnst = new_rd_SymConst(dbg, irg, bl, sym, symconst_addr_ent);
+ cnst = new_rd_SymConst(dbg, irg, bl, mode, sym, symconst_addr_ent);
newn = new_rd_Add(dbg, irg, bl, ptr, cnst, mode);
} else {
/* not TLS */
basemode = mode_P_data;
assert(basemode && "no mode for lowering Sel");
- assert((get_mode_size_bytes(basemode) != -1) && "can not deal with unorthodox modes");
+ assert((get_mode_size_bits(basemode) % 8 == 0) && "can not deal with unorthodox modes");
index = get_Sel_index(sel, 0);
if (is_Array_type(owner)) {
- ir_node *last_size;
ir_type *arr_ty = owner;
- int dims = get_array_n_dimensions(arr_ty);
- int *map = alloca(sizeof(int) * dims);
- int i;
+ int dims = get_array_n_dimensions(arr_ty);
+ int *map = ALLOCAN(int, dims);
+ ir_node *last_size;
+ int i;
assert(dims == get_Sel_n_indexs(sel)
&& "array dimension must match number of indices of Sel node");
ub = get_array_upper_bound(arr_ty, dim);
assert(irg == current_ir_graph);
- if (get_irn_op(lb) != op_Unknown)
+ if (! is_Unknown(lb))
lb = new_rd_Conv(dbg, irg, bl, copy_const_value(get_irn_dbg_info(sel), lb), mode_Int);
else
lb = NULL;
- if (get_irn_op(ub) != op_Unknown)
+ if (! is_Unknown(ub))
ub = new_rd_Conv(dbg, irg, bl, copy_const_value(get_irn_dbg_info(sel), ub), mode_Int);
else
ub = NULL;
* bounds have to be set in the non-last dimension.
*/
if (i > 0) {
- assert(lb && "lower bound has to be set in multi-dim array");
- assert(lb && "upper bound has to be set in multi-dim array");
+ assert(lb != NULL && "lower bound has to be set in multi-dim array");
+ assert(ub != NULL && "upper bound has to be set in multi-dim array");
/* Elements in one Dimension */
elms = new_rd_Sub(dbg, irg, bl, ub, lb, mode_Int);
* Normalize index, id lower bound is set, also assume
* lower bound == 0
*/
- if (lb)
+ if (lb != NULL)
ind = new_rd_Sub(dbg, irg, bl, ind, lb, mode_Int);
n = new_rd_Mul(dbg, irg, bl, ind, last_size, mode_Int);
mode);
}
} else if (is_Method_type(get_entity_type(ent)) &&
- is_Class_type(owner) &&
- (owner != get_glob_type()) &&
- (!is_frame_type(owner))) {
+ is_Class_type(owner) &&
+ (owner != get_glob_type()) &&
+ (!is_frame_type(owner))) {
ir_node *add;
ir_mode *ent_mode = get_type_mode(get_entity_type(ent));
#endif
newn = new_r_Proj(irg, bl, newn, ent_mode, pn_Load_res);
- } else if (get_entity_owner(ent) != get_glob_type()) {
+ } else if (get_entity_owner(ent) != get_glob_type()) {
+ int offset;
+
/* replace Sel by add(obj, const(ent.offset)) */
assert(!(get_entity_allocation(ent) == allocation_static &&
(get_entity_n_overwrites(ent) == 0 && get_entity_n_overwrittenby(ent) == 0)));
- tv = new_tarval_from_long(get_entity_offset(ent), mode_Int);
- cnst = new_r_Const(irg, get_irg_start_block(irg), mode_Int, tv);
- newn = new_rd_Add(dbg, irg, bl, get_Sel_ptr(sel), cnst, mode);
+ newn = get_Sel_ptr(sel);
+ offset = get_entity_offset(ent);
+ if (offset != 0) {
+ ir_mode *mode_UInt = get_reference_mode_unsigned_eq(mode);
+
+ tv = new_tarval_from_long(offset, mode_UInt);
+ cnst = new_r_Const(irg, get_irg_start_block(irg), mode_UInt, tv);
+ newn = new_rd_Add(dbg, irg, bl, newn, cnst, mode);
+ }
} else {
/* global_type */
- newn = new_rd_SymConst_addr_ent(NULL, current_ir_graph, ent, firm_unknown_type);
+ newn = new_rd_SymConst_addr_ent(NULL, current_ir_graph, mode, ent, firm_unknown_type);
}
}
/* run the hooks */
int offset, bit_offset, bits, bf_bits, old_cse;
dbg_info *db;
- if (get_irn_op(sel) != op_Sel)
+ if (!is_Sel(sel))
return;
ent = get_Sel_entity(sel);
dbg_info *db;
/* check bitfield access */
- if (get_irn_op(sel) != op_Sel)
+ if (!is_Sel(sel))
return;
ent = get_Sel_entity(sel);
* Lowers unaligned Loads.
*/
static void lower_unaligned_Load(ir_node *load) {
+ (void) load;
/* NYI */
}
* Lowers unaligned Stores
*/
static void lower_unaligned_Store(ir_node *store) {
+ (void) store;
/* NYI */
}
{
long proj = get_Proj_proj(irn);
ir_node *pred = get_Proj_pred(irn);
- ir_op *op = get_irn_op(pred);
- if ((proj == pn_Load_res) && (op == op_Load))
+ if (proj == pn_Load_res && is_Load(pred))
lower_bitfields_loads(irn, pred);
break;
}
* Replace Sel nodes by address computation. Also resolves array access.
* Handle Bitfields by added And/Or calculations.
*/
-void lower_highlevel(void) {
+void lower_highlevel_graph(ir_graph *irg, int lower_bitfields) {
+
+ if (lower_bitfields) {
+ /* First step: lower bitfield access: must be run as long as Sels still
+ * exists. */
+ irg_walk_graph(irg, NULL, lower_bf_access, NULL);
+ }
+
+ /* Finally: lower SymConst-Size and Sel nodes, Casts, unaligned Load/Stores. */
+ irg_walk_graph(irg, NULL, lower_irnode, NULL);
+} /* lower_highlevel_graph */
+
+/*
+ * does the same as lower_highlevel() for all nodes on the const code irg
+ */
+void lower_const_code(void) {
+ walk_const_code(NULL, lower_irnode, NULL);
+} /* lower_const_code */
+
+/*
+ * Replaces SymConsts by a real constant if possible.
+ * Replace Sel nodes by address computation. Also resolves array access.
+ * Handle Bitfields by added And/Or calculations.
+ */
+void lower_highlevel(int lower_bitfields) {
int i, n;
n = get_irp_n_irgs();
for (i = 0; i < n; ++i) {
ir_graph *irg = get_irp_irg(i);
-
- /* First step: lower bitfield access: must be run as long as Sels still exists. */
- irg_walk_graph(irg, NULL, lower_bf_access, NULL);
-
- /* Finally: lower SymConst-Size and Sel nodes, Casts, unaligned Load/Stores. */
- irg_walk_graph(irg, NULL, lower_irnode, NULL);
-
- set_irg_phase_low(irg);
+ lower_highlevel_graph(irg, lower_bitfields);
}
+ lower_const_code();
} /* lower_highlevel */
projects / libfirm / blobdiff