-/**
- * @file benode.c
- * @date 17.05.2005
- * @author Sebastian Hack
+/*
+ * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
*
- * Backend node support.
+ * This file is part of libFirm.
*
- * This file provides Perm, Copy, Spill and Reload nodes.
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
*
- * Copyright (C) 2005-2006 Universitaet Karlsruhe
- * Released under the GPL
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
+/**
+ * @file
+ * @brief Backend node support for generic backend nodes.
+ * @author Sebastian Hack
+ * @date 17.05.2005
+ * @version $Id$
+ *
+ * Backend node support for generic backend nodes.
+ * This file provides Perm, Copy, Spill and Reload nodes.
*/
#ifdef HAVE_CONFIG_H
-#include <config.h>
+#include "config.h"
#endif
#include <stdlib.h>
#include "fourcc.h"
#include "offset.h"
#include "bitfiddle.h"
+#include "raw_bitset.h"
#include "irop_t.h"
#include "irmode_t.h"
static unsigned be_node_tag = FOURCC('B', 'E', 'N', 'O');
-typedef enum {
- be_req_kind_old_limited,
- be_req_kind_negate_old_limited,
- be_req_kind_single_reg
-} be_req_kind_t;
-
typedef struct {
arch_register_req_t req;
- be_req_kind_t kind;
arch_irn_flags_t flags;
- union {
- struct {
- void (*old_limited)(void *ptr, bitset_t *bs);
- void *old_limited_env;
- } old_limited;
-
- const arch_register_t *single_reg;
- } x;
} be_req_t;
typedef struct {
const arch_register_t *reg;
- be_req_t req;
- be_req_t in_req;
+ be_req_t req;
+ be_req_t in_req;
} be_reg_data_t;
/** The generic be nodes attribute type. */
*
* @return zero if both attributes are identically
*/
-static int cmp_node_attr(be_node_attr_t *a, be_node_attr_t *b) {
+static int _node_cmp_attr(be_node_attr_t *a, be_node_attr_t *b) {
int i, len;
if(ARR_LEN(a->reg_data) != ARR_LEN(b->reg_data))
return 0;
}
+static int node_cmp_attr(ir_node *a, ir_node *b) {
+ be_node_attr_t *a_attr = get_irn_attr(a);
+ be_node_attr_t *b_attr = get_irn_attr(b);
+
+ return _node_cmp_attr(a_attr, b_attr);
+}
+
/**
* Compare the attributes of two FrameAddr nodes.
*
be_frame_attr_t *a_attr = get_irn_attr(a);
be_frame_attr_t *b_attr = get_irn_attr(b);
- if (a_attr->ent == b_attr->ent && a_attr->offset == b_attr->offset)
- return cmp_node_attr(&a_attr->node_attr, &b_attr->node_attr);
- return 1;
+ if (a_attr->ent != b_attr->ent || a_attr->offset != b_attr->offset)
+ return 1;
+
+ return _node_cmp_attr((be_node_attr_t*) a_attr, (be_node_attr_t*) b_attr);
+}
+
+static int Return_cmp_attr(ir_node *a, ir_node *b) {
+ be_return_attr_t *a_attr = get_irn_attr(a);
+ be_return_attr_t *b_attr = get_irn_attr(b);
+
+ if (a_attr->num_ret_vals != b_attr->num_ret_vals)
+ return 1;
+
+ return _node_cmp_attr((be_node_attr_t*) a_attr, (be_node_attr_t*) b_attr);
+}
+
+static int Stack_cmp_attr(ir_node *a, ir_node *b) {
+ be_stack_attr_t *a_attr = get_irn_attr(a);
+ be_stack_attr_t *b_attr = get_irn_attr(b);
+
+ if (a_attr->offset != b_attr->offset)
+ return 1;
+
+ return _node_cmp_attr((be_node_attr_t*) a_attr, (be_node_attr_t*) b_attr);
+}
+
+static int Call_cmp_attr(ir_node *a, ir_node *b) {
+ be_call_attr_t *a_attr = get_irn_attr(a);
+ be_call_attr_t *b_attr = get_irn_attr(b);
+
+ if (a_attr->ent != b_attr->ent ||
+ a_attr->call_tp != b_attr->call_tp)
+ return 1;
+
+ return _node_cmp_attr((be_node_attr_t*) a_attr, (be_node_attr_t*) b_attr);
+}
+
+static INLINE be_req_t *get_be_req(const ir_node *node, int pos)
+{
+ int idx;
+ be_node_attr_t *attr;
+ be_reg_data_t *rd;
+
+ assert(is_be_node(node));
+ attr = get_irn_attr(node);
+
+ if(pos < 0) {
+ idx = -(pos + 1);
+ } else {
+ idx = pos;
+ assert(idx < get_irn_arity(node));
+ }
+ assert(idx < ARR_LEN(attr->reg_data));
+ rd = &attr->reg_data[idx];
+
+ return pos < 0 ? &rd->req : &rd->in_req;
+}
+
+static INLINE arch_register_req_t *get_req(const ir_node *node, int pos)
+{
+ be_req_t *bereq = get_be_req(node, pos);
+ return &bereq->req;
}
void be_node_init(void) {
inited = 1;
/* Acquire all needed opcodes. */
- beo_base = get_next_ir_opcodes(beo_Last - 1);
+ beo_base = get_next_ir_opcodes(beo_Last);
- op_be_Spill = new_ir_op(beo_base + beo_Spill, "be_Spill", op_pin_state_mem_pinned, N, oparity_unary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
- op_be_Reload = new_ir_op(beo_base + beo_Reload, "be_Reload", op_pin_state_mem_pinned, N, oparity_zero, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_Spill = new_ir_op(beo_base + beo_Spill, "be_Spill", op_pin_state_pinned, N, oparity_unary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_Reload = new_ir_op(beo_base + beo_Reload, "be_Reload", op_pin_state_pinned, N, oparity_zero, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
op_be_Perm = new_ir_op(beo_base + beo_Perm, "be_Perm", op_pin_state_pinned, N, oparity_variable, 0, sizeof(be_node_attr_t), &be_node_op_ops);
- op_be_MemPerm = new_ir_op(beo_base + beo_MemPerm, "be_MemPerm", op_pin_state_mem_pinned, N, oparity_variable, 0, sizeof(be_memperm_attr_t), &be_node_op_ops);
+ op_be_MemPerm = new_ir_op(beo_base + beo_MemPerm, "be_MemPerm", op_pin_state_pinned, N, oparity_variable, 0, sizeof(be_memperm_attr_t), &be_node_op_ops);
op_be_Copy = new_ir_op(beo_base + beo_Copy, "be_Copy", op_pin_state_floats, N, oparity_unary, 0, sizeof(be_node_attr_t), &be_node_op_ops);
op_be_Keep = new_ir_op(beo_base + beo_Keep, "be_Keep", op_pin_state_pinned, K, oparity_dynamic, 0, sizeof(be_node_attr_t), &be_node_op_ops);
op_be_CopyKeep = new_ir_op(beo_base + beo_CopyKeep, "be_CopyKeep", op_pin_state_pinned, K, oparity_variable, 0, sizeof(be_node_attr_t), &be_node_op_ops);
op_be_Call = new_ir_op(beo_base + beo_Call, "be_Call", op_pin_state_pinned, F, oparity_variable, 0, sizeof(be_call_attr_t), &be_node_op_ops);
- op_be_Return = new_ir_op(beo_base + beo_Return, "be_Return", op_pin_state_pinned, X, oparity_variable, 0, sizeof(be_return_attr_t), &be_node_op_ops);
+ op_be_Return = new_ir_op(beo_base + beo_Return, "be_Return", op_pin_state_pinned, X, oparity_dynamic, 0, sizeof(be_return_attr_t), &be_node_op_ops);
op_be_AddSP = new_ir_op(beo_base + beo_AddSP, "be_AddSP", op_pin_state_pinned, N, oparity_unary, 0, sizeof(be_node_attr_t), &be_node_op_ops);
op_be_SubSP = new_ir_op(beo_base + beo_SubSP, "be_SubSP", op_pin_state_pinned, N, oparity_unary, 0, sizeof(be_node_attr_t), &be_node_op_ops);
- op_be_SetSP = new_ir_op(beo_base + beo_SetSP, "be_SetSP", op_pin_state_pinned, N, oparity_binary, 0, sizeof(be_stack_attr_t), &be_node_op_ops);
op_be_IncSP = new_ir_op(beo_base + beo_IncSP, "be_IncSP", op_pin_state_pinned, N, oparity_unary, 0, sizeof(be_stack_attr_t), &be_node_op_ops);
+ op_be_SetSP = new_ir_op(beo_base + beo_SetSP, "be_SetSP", op_pin_state_pinned, N, oparity_binary, 0, sizeof(be_stack_attr_t), &be_node_op_ops);
op_be_RegParams = new_ir_op(beo_base + beo_RegParams, "be_RegParams", op_pin_state_pinned, N, oparity_zero, 0, sizeof(be_node_attr_t), &be_node_op_ops);
- op_be_StackParam = new_ir_op(beo_base + beo_StackParam, "be_StackParam", op_pin_state_pinned, N, oparity_unary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
- op_be_FrameAddr = new_ir_op(beo_base + beo_FrameAddr, "be_FrameAddr", op_pin_state_pinned, N, oparity_unary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
- op_be_FrameLoad = new_ir_op(beo_base + beo_FrameLoad, "be_FrameLoad", op_pin_state_pinned, N, oparity_any, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
- op_be_FrameStore = new_ir_op(beo_base + beo_FrameStore, "be_FrameStore", op_pin_state_pinned, N, oparity_any, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_StackParam = new_ir_op(beo_base + beo_StackParam, "be_StackParam", op_pin_state_floats, N, oparity_unary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_FrameLoad = new_ir_op(beo_base + beo_FrameLoad, "be_FrameLoad", op_pin_state_floats, N, oparity_any, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_FrameStore = new_ir_op(beo_base + beo_FrameStore, "be_FrameStore", op_pin_state_floats, N, oparity_any, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_FrameAddr = new_ir_op(beo_base + beo_FrameAddr, "be_FrameAddr", op_pin_state_floats, N, oparity_unary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
op_be_Barrier = new_ir_op(beo_base + beo_Barrier, "be_Barrier", op_pin_state_pinned, N, oparity_dynamic, 0, sizeof(be_node_attr_t), &be_node_op_ops);
set_op_tag(op_be_Spill, &be_node_tag);
+ op_be_Spill->ops.node_cmp_attr = FrameAddr_cmp_attr;
set_op_tag(op_be_Reload, &be_node_tag);
+ op_be_Reload->ops.node_cmp_attr = FrameAddr_cmp_attr;
set_op_tag(op_be_Perm, &be_node_tag);
+ op_be_Perm->ops.node_cmp_attr = node_cmp_attr;
set_op_tag(op_be_MemPerm, &be_node_tag);
+ op_be_MemPerm->ops.node_cmp_attr = node_cmp_attr;
set_op_tag(op_be_Copy, &be_node_tag);
+ op_be_Copy->ops.node_cmp_attr = node_cmp_attr;
set_op_tag(op_be_Keep, &be_node_tag);
+ op_be_Keep->ops.node_cmp_attr = node_cmp_attr;
set_op_tag(op_be_CopyKeep, &be_node_tag);
+ op_be_CopyKeep->ops.node_cmp_attr = node_cmp_attr;
set_op_tag(op_be_Call, &be_node_tag);
+ op_be_Call->ops.node_cmp_attr = Call_cmp_attr;
set_op_tag(op_be_Return, &be_node_tag);
+ op_be_Return->ops.node_cmp_attr = Return_cmp_attr;
set_op_tag(op_be_AddSP, &be_node_tag);
+ op_be_AddSP->ops.node_cmp_attr = node_cmp_attr;
set_op_tag(op_be_SubSP, &be_node_tag);
+ op_be_SubSP->ops.node_cmp_attr = node_cmp_attr;
set_op_tag(op_be_SetSP, &be_node_tag);
+ op_be_SetSP->ops.node_cmp_attr = Stack_cmp_attr;
set_op_tag(op_be_IncSP, &be_node_tag);
+ op_be_IncSP->ops.node_cmp_attr = Stack_cmp_attr;
set_op_tag(op_be_RegParams, &be_node_tag);
+ op_be_RegParams->ops.node_cmp_attr = node_cmp_attr;
set_op_tag(op_be_StackParam, &be_node_tag);
+ op_be_StackParam->ops.node_cmp_attr = FrameAddr_cmp_attr;
set_op_tag(op_be_FrameLoad, &be_node_tag);
+ op_be_FrameLoad->ops.node_cmp_attr = FrameAddr_cmp_attr;
set_op_tag(op_be_FrameStore, &be_node_tag);
+ op_be_FrameStore->ops.node_cmp_attr = FrameAddr_cmp_attr;
set_op_tag(op_be_FrameAddr, &be_node_tag);
- set_op_tag(op_be_Barrier, &be_node_tag);
-
op_be_FrameAddr->ops.node_cmp_attr = FrameAddr_cmp_attr;
+ set_op_tag(op_be_Barrier, &be_node_tag);
+ op_be_Barrier->ops.node_cmp_attr = node_cmp_attr;
}
/**
*/
static void *init_node_attr(ir_node *node, int max_reg_data)
{
- ir_graph *irg = get_irn_irg(node);
+ ir_graph *irg = get_irn_irg(node);
struct obstack *obst = get_irg_obstack(irg);
be_node_attr_t *a = get_irn_attr(node);
be_opcode_t be_get_irn_opcode(const ir_node *irn)
{
- return is_be_node(irn) ? get_irn_opcode(irn) - beo_base : beo_NoBeOp;
+ return is_be_node(irn) ? (be_opcode_t) get_irn_opcode(irn) - beo_base : beo_NoBeOp;
}
/**
return 0;
}
-static be_node_attr_t *retrieve_irn_attr(const ir_node *irn, int *the_pos)
+static be_reg_data_t *retrieve_reg_data(const ir_node *node)
{
- int dummy;
- be_node_attr_t *res = NULL;
- int *pos = the_pos ? the_pos : &dummy;
-
- *pos = -1;
- if(is_Proj(irn)) {
- ir_node *pred = get_Proj_pred(irn);
- int p = get_Proj_proj(irn);
+ be_node_attr_t *attr;
+ int pos = 0;
- if(is_be_node(pred)) {
- assert(get_irn_mode(pred) == mode_T);
- *pos = p;
- res = get_irn_attr(pred);
- assert(p >= 0 && p < ARR_LEN(res->reg_data) && "illegal proj number");
- }
- } else if(is_be_node(irn) && get_irn_mode(irn) != mode_T) {
- be_node_attr_t *a = get_irn_attr(irn);
- if(ARR_LEN(a->reg_data) > 0) {
- res = a;
- *pos = 0;
- }
+ if(is_Proj(node)) {
+ pos = get_Proj_proj(node);
+ node = get_Proj_pred(node);
}
- return res;
-}
+ assert(is_be_node(node));
+ attr = get_irn_attr(node);
+ assert(pos >= 0 && pos < ARR_LEN(attr->reg_data) && "illegal proj number");
-static be_reg_data_t *retrieve_reg_data(const ir_node *irn)
-{
- int pos;
- be_node_attr_t *a = retrieve_irn_attr(irn, &pos);
- return a ? &a->reg_data[pos] : NULL;
+ return &attr->reg_data[pos];
}
static void
-be_node_set_irn_reg(const void *_self, ir_node *irn, const arch_register_t *reg)
+be_node_set_irn_reg(const void *self, ir_node *irn, const arch_register_t *reg)
{
be_reg_data_t *r = retrieve_reg_data(irn);
-
- if(r)
- r->reg = reg;
+ (void) self;
+ r->reg = reg;
}
-
ir_node *be_new_Spill(const arch_register_class_t *cls, const arch_register_class_t *cls_frame,
ir_graph *irg, ir_node *bl, ir_node *frame, ir_node *to_spill)
{
assert(be_is_Spill(irn));
return get_irn_n(irn, be_pos_Spill_val);
}
+
ir_node *be_get_Spill_frame(const ir_node *irn)
{
assert(be_is_Spill(irn));
return irn;
}
+void be_Perm_reduce(ir_node *perm, int new_size, int *map)
+{
+ ir_graph *irg = get_irn_irg(perm);
+ int n = get_irn_arity(perm);
+ be_reg_data_t *old_data = xmalloc(n * sizeof(old_data[0]));
+ be_node_attr_t *attr = get_irn_attr(perm);
+ ir_node **new_in = NEW_ARR_D(ir_node *, irg->obst, new_size + 1);
+
+ int i;
+
+ assert(be_is_Perm(perm));
+ assert(new_size <= n);
+
+ /* save the old register data */
+ memcpy(old_data, attr->reg_data, n * sizeof(old_data[0]));
+
+ /* compose the new in array and set the new register data directly in place */
+ for (i = 0; i < n; ++i) {
+ int idx = map[i];
+ if (idx >= 0) {
+ new_in[idx] = get_irn_n(perm, i);
+ attr->reg_data[idx] = old_data[i];
+ }
+ }
+
+ free(old_data);
+ set_irn_in(perm, new_size, new_in);
+}
+
ir_node *be_new_MemPerm(const arch_env_t *arch_env, ir_graph *irg, ir_node *bl, int n, ir_node *in[])
{
int i;
{
ir_node *in[1];
ir_node *res;
+ arch_register_req_t *req;
in[0] = op;
res = new_ir_node(NULL, irg, bl, op_be_Copy, get_irn_mode(op), 1, in);
init_node_attr(res, 1);
be_node_set_reg_class(res, 0, cls);
be_node_set_reg_class(res, OUT_POS(0), cls);
+
+ req = get_req(res, OUT_POS(0));
+ req->cls = cls;
+ req->type = arch_register_req_type_should_be_same;
+ req->other_same = 0;
+
return res;
}
be_node_set_reg_class(keep, n, cls);
}
+/* creates a be_Call */
ir_node *be_new_Call(dbg_info *dbg, ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *sp, ir_node *ptr,
int n_outs, int n, ir_node *in[], ir_type *call_tp)
{
}
/* Construct a new be_Return. */
-ir_node *be_new_Return(dbg_info *dbg, ir_graph *irg, ir_node *bl, int n_res, int n, ir_node *in[])
+ir_node *be_new_Return(dbg_info *dbg, ir_graph *irg, ir_node *block, int n_res,
+ int n, ir_node *in[])
{
be_return_attr_t *a;
- ir_node *irn = new_ir_node(dbg, irg, bl, op_be_Return, mode_X, n, in);
- init_node_attr(irn, n);
- a = get_irn_attr(irn);
+ ir_node *res;
+ int i;
+
+ res = new_ir_node(dbg, irg, block, op_be_Return, mode_X, -1, NULL);
+ init_node_attr(res, -1);
+ for(i = 0; i < n; ++i) {
+ add_irn_n(res, in[i]);
+ add_register_req(res);
+ }
+
+ a = get_irn_attr(res);
a->num_ret_vals = n_res;
- return irn;
+ return res;
}
/* Returns the number of real returns values */
return a->num_ret_vals;
}
+int be_Return_append_node(ir_node *ret, ir_node *node)
+{
+ int pos;
+
+ pos = add_irn_n(ret, node);
+ add_register_req(ret);
+
+ return pos;
+}
+
ir_node *be_new_IncSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, int offset)
{
be_stack_attr_t *a;
be_node_attr_t *a;
ir_node *irn;
ir_node *in[be_pos_AddSP_last];
+ const arch_register_class_t *class;
in[be_pos_AddSP_old_sp] = old_sp;
in[be_pos_AddSP_size] = sz;
irn = new_ir_node(NULL, irg, bl, op_be_AddSP, mode_T, be_pos_AddSP_last, in);
a = init_node_attr(irn, be_pos_AddSP_last);
- be_node_set_flags(irn, OUT_POS(pn_be_AddSP_res), arch_irn_flags_ignore | arch_irn_flags_modify_sp);
+ be_node_set_flags(irn, OUT_POS(pn_be_AddSP_sp),
+ arch_irn_flags_ignore | arch_irn_flags_modify_sp);
/* Set output constraint to stack register. */
be_set_constr_single_reg(irn, be_pos_AddSP_old_sp, sp);
be_node_set_reg_class(irn, be_pos_AddSP_size, arch_register_get_class(sp));
- be_set_constr_single_reg(irn, OUT_POS(pn_be_AddSP_res), sp);
- a->reg_data[pn_be_AddSP_res].reg = sp;
+ be_set_constr_single_reg(irn, OUT_POS(pn_be_AddSP_sp), sp);
+ a->reg_data[pn_be_AddSP_sp].reg = sp;
+
+ class = arch_register_get_class(sp);
+ be_node_set_reg_class(irn, OUT_POS(pn_be_AddSP_res), class);
return irn;
}
irn = new_ir_node(NULL, irg, bl, op_be_SubSP, mode_T, be_pos_SubSP_last, in);
a = init_node_attr(irn, be_pos_SubSP_last);
- be_node_set_flags(irn, OUT_POS(pn_be_SubSP_res), arch_irn_flags_ignore | arch_irn_flags_modify_sp);
+ be_node_set_flags(irn, OUT_POS(pn_be_SubSP_sp),
+ arch_irn_flags_ignore | arch_irn_flags_modify_sp);
/* Set output constraint to stack register. */
be_set_constr_single_reg(irn, be_pos_SubSP_old_sp, sp);
be_node_set_reg_class(irn, be_pos_SubSP_size, arch_register_get_class(sp));
- be_set_constr_single_reg(irn, OUT_POS(pn_be_SubSP_res), sp);
- a->reg_data[pn_be_SubSP_res].reg = sp;
+ be_set_constr_single_reg(irn, OUT_POS(pn_be_SubSP_sp), sp);
+ a->reg_data[pn_be_SubSP_sp].reg = sp;
return irn;
}
-ir_node *be_new_SetSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *op, ir_node *mem)
+ir_node *be_new_SetSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl,
+ ir_node *old_sp, ir_node *op, ir_node *mem)
{
be_node_attr_t *a;
ir_node *irn;
ir_node *in[3];
- in[0] = mem;
- in[1] = old_sp;
- in[2] = op;
- irn = new_ir_node(NULL, irg, bl, op_be_SetSP, get_irn_mode(old_sp), 3, in);
- a = init_node_attr(irn, 3);
+ in[0] = mem;
+ in[1] = old_sp;
+ in[2] = op;
+ irn = new_ir_node(NULL, irg, bl, op_be_SetSP, get_irn_mode(old_sp), 3, in);
+ a = init_node_attr(irn, 3);
be_node_set_flags(irn, OUT_POS(0), arch_irn_flags_ignore | arch_irn_flags_modify_sp);
be_node_set_reg_class(irn, 0, cls_frame);
be_node_set_reg_class(irn, OUT_POS(0), cls);
+ be_node_set_flags(irn, OUT_POS(0), arch_irn_flags_rematerializable);
+
return irn;
}
const arch_register_class_t *cls = arch_register_get_class(reg);
ir_mode *mode = arch_register_class_mode(cls);
int n = ARR_LEN(attr->reg_data);
+ ir_node *proj;
assert(be_is_RegParams(regparams));
- ir_node *proj = new_r_Proj(irg, block, regparams, mode, n);
+ proj = new_r_Proj(irg, block, regparams, mode, n);
add_register_req(regparams);
- be_set_constr_single_reg(regparams, n, reg);
+ be_set_constr_single_reg(regparams, BE_OUT_POS(n), reg);
arch_set_irn_register(arch_env, proj, reg);
- /* TODO decide, whether we need to set ignore/modifysp flags here? */
+ /* TODO decide, whether we need to set ignore/modify sp flags here? */
return proj;
}
return optimize_node(irn);
}
+ir_node *be_get_FrameAddr_frame(ir_node *node) {
+ assert(be_is_FrameAddr(node));
+ return get_irn_n(node, be_pos_FrameAddr_ptr);
+}
+
ir_node *be_new_CopyKeep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *src, int n, ir_node *in_keep[], ir_mode *mode)
{
ir_node *irn;
ir_node *block = get_nodes_block(barrier);
ir_mode *mode = get_irn_mode(node);
int n = add_irn_n(barrier, node);
+
ir_node *proj = new_r_Proj(irg, block, barrier, mode, n);
add_register_req(barrier);
return get_irn_arity(irn) - 1;
}
-static void be_limited(void *data, bitset_t *bs)
-{
- be_req_t *req = data;
-
- switch(req->kind) {
- case be_req_kind_negate_old_limited:
- case be_req_kind_old_limited:
- req->x.old_limited.old_limited(req->x.old_limited.old_limited_env, bs);
- if(req->kind == be_req_kind_negate_old_limited)
- bitset_flip_all(bs);
- break;
- case be_req_kind_single_reg:
- bitset_clear_all(bs);
- bitset_set(bs, req->x.single_reg->index);
- break;
- }
-}
-
-static INLINE be_req_t *get_req(ir_node *irn, int pos)
+void be_set_constr_single_reg(ir_node *node, int pos, const arch_register_t *reg)
{
- int idx = pos < 0 ? -(pos + 1) : pos;
- be_node_attr_t *a = get_irn_attr(irn);
- be_reg_data_t *rd = &a->reg_data[idx];
- be_req_t *r = pos < 0 ? &rd->req : &rd->in_req;
-
- assert(is_be_node(irn));
- assert(!(pos >= 0) || pos < get_irn_arity(irn));
- assert(!(pos < 0) || -(pos + 1) <= ARR_LEN(a->reg_data));
+ arch_register_req_t *req = get_req(node, pos);
+ const arch_register_class_t *cls = arch_register_get_class(reg);
+ ir_graph *irg = get_irn_irg(node);
+ struct obstack *obst = get_irg_obstack(irg);
+ unsigned *limited_bitset;
- return r;
-}
+ assert(req->cls == NULL || req->cls == cls);
+ assert(! (req->type & arch_register_req_type_limited));
+ assert(req->limited == NULL);
-void be_set_constr_single_reg(ir_node *irn, int pos, const arch_register_t *reg)
-{
- be_req_t *r = get_req(irn, pos);
+ limited_bitset = rbitset_obstack_alloc(obst, arch_register_class_n_regs(cls));
+ rbitset_set(limited_bitset, arch_register_get_index(reg));
- r->kind = be_req_kind_single_reg;
- r->x.single_reg = reg;
- r->req.limited = be_limited;
- r->req.limited_env = r;
- r->req.type = arch_register_req_type_limited;
- r->req.cls = reg->reg_class;
+ req->cls = cls;
+ req->type |= arch_register_req_type_limited;
+ req->limited = limited_bitset;
}
-void be_set_constr_limited(ir_node *irn, int pos, const arch_register_req_t *req)
+void be_set_constr_limited(ir_node *node, int pos, const arch_register_req_t *req)
{
- be_req_t *r = get_req(irn, pos);
+ ir_graph *irg = get_irn_irg(node);
+ struct obstack *obst = get_irg_obstack(irg);
+ arch_register_req_t *r = get_req(node, pos);
assert(arch_register_req_is(req, limited));
-
- r->kind = be_req_kind_old_limited;
- r->req.limited = be_limited;
- r->req.limited_env = r;
- r->req.type = arch_register_req_type_limited;
- r->req.cls = req->cls;
-
- r->x.old_limited.old_limited = req->limited;
- r->x.old_limited.old_limited_env = req->limited_env;
+ assert(! (req->type & (arch_register_req_type_should_be_same | arch_register_req_type_should_be_different)));
+ memcpy(r, req, sizeof(r[0]));
+ r->limited = rbitset_duplicate_obstack_alloc(obst, req->limited, req->cls->n_regs);
}
void be_node_set_flags(ir_node *irn, int pos, arch_irn_flags_t flags)
{
- be_req_t *r = get_req(irn, pos);
- r->flags = flags;
+ be_req_t *bereq = get_be_req(irn, pos);
+ bereq->flags = flags;
}
void be_node_set_reg_class(ir_node *irn, int pos, const arch_register_class_t *cls)
{
- be_req_t *r = get_req(irn, pos);
+ arch_register_req_t *req = get_req(irn, pos);
- r->req.cls = cls;
+ req->cls = cls;
if (cls == NULL) {
- r->req.type = arch_register_req_type_none;
- } else if (r->req.type == arch_register_req_type_none) {
- r->req.type = arch_register_req_type_normal;
+ req->type = arch_register_req_type_none;
+ } else if (req->type == arch_register_req_type_none) {
+ req->type = arch_register_req_type_normal;
}
}
void be_node_set_req_type(ir_node *irn, int pos, arch_register_req_type_t type)
{
- be_req_t *r = get_req(irn, pos);
- r->req.type = type;
+ arch_register_req_t *req = get_req(irn, pos);
+ req->type = type;
}
ir_node *be_get_IncSP_pred(ir_node *irn) {
*/
-static void *put_out_reg_req(arch_register_req_t *req, const ir_node *irn, int out_pos)
+static const
+arch_register_req_t *get_out_reg_req(const ir_node *irn, int out_pos)
{
const be_node_attr_t *a = get_irn_attr(irn);
- if(out_pos < ARR_LEN(a->reg_data)) {
- memcpy(req, &a->reg_data[out_pos].req, sizeof(req[0]));
-
- if(be_is_Copy(irn)) {
- req->type |= arch_register_req_type_should_be_same;
- req->other_same = be_get_Copy_op(irn);
- }
- } else {
- req->type = arch_register_req_type_none;
- req->cls = NULL;
+ if(out_pos >= ARR_LEN(a->reg_data)) {
+ return arch_no_register_req;
}
- return req;
+ return &a->reg_data[out_pos].req.req;
}
-static void *put_in_reg_req(arch_register_req_t *req, const ir_node *irn, int pos)
+static const
+arch_register_req_t *get_in_reg_req(const ir_node *irn, int pos)
{
const be_node_attr_t *a = get_irn_attr(irn);
- if(pos < get_irn_arity(irn) && pos < ARR_LEN(a->reg_data)) {
- memcpy(req, &a->reg_data[pos].in_req, sizeof(req[0]));
- } else {
- req->type = arch_register_req_type_none;
- req->cls = NULL;
- }
+ if(pos >= get_irn_arity(irn) || pos >= ARR_LEN(a->reg_data))
+ return arch_no_register_req;
- return req;
+ return &a->reg_data[pos].in_req.req;
}
static const arch_register_req_t *
-be_node_get_irn_reg_req(const void *self, arch_register_req_t *req, const ir_node *irn, int pos)
+be_node_get_irn_reg_req(const void *self, const ir_node *irn, int pos)
{
int out_pos = pos;
+ (void) self;
if (pos < 0) {
if (get_irn_mode(irn) == mode_T)
- return NULL;
+ return arch_no_register_req;
out_pos = redir_proj((const ir_node **)&irn);
assert(is_be_node(irn));
- return put_out_reg_req(req, irn, out_pos);
- }
-
- else {
- if (is_be_node(irn)) {
- /*
- For spills and reloads, we return "none" as requirement for frame pointer,
- so every input is ok. Some backends need this (e.g. STA). We use an arbitrary
- large number as pos, so put_in_reg_req will return "none" as requirement.
- */
- if ((be_is_Spill(irn) && pos == be_pos_Spill_frame) ||
+ return get_out_reg_req(irn, out_pos);
+ } else if (is_be_node(irn)) {
+ /*
+ * For spills and reloads, we return "none" as requirement for frame
+ * pointer, so every input is ok. Some backends need this (e.g. STA).
+ */
+ if ((be_is_Spill(irn) && pos == be_pos_Spill_frame) ||
(be_is_Reload(irn) && pos == be_pos_Reload_frame))
- return put_in_reg_req(req, irn, INT_MAX);
- else
- return put_in_reg_req(req, irn, pos);
- }
- return NULL;
+ return arch_no_register_req;
+
+ return get_in_reg_req(irn, pos);
}
- return req;
+ return arch_no_register_req;
}
const arch_register_t *
-be_node_get_irn_reg(const void *_self, const ir_node *irn)
+be_node_get_irn_reg(const void *self, const ir_node *irn)
{
- be_reg_data_t *r = retrieve_reg_data(irn);
- return r ? r->reg : NULL;
+ be_reg_data_t *r;
+
+ (void) self;
+ if (get_irn_mode(irn) == mode_T)
+ return NULL;
+ r = retrieve_reg_data(irn);
+ return r->reg;
}
-static arch_irn_class_t be_node_classify(const void *_self, const ir_node *irn)
+static arch_irn_class_t be_node_classify(const void *self, const ir_node *irn)
{
redir_proj((const ir_node **) &irn);
+ (void) self;
switch(be_get_irn_opcode(irn)) {
#define XXX(a,b) case beo_ ## a: return arch_irn_class_ ## b
XXX(Spill, spill);
return 0;
}
-static arch_irn_flags_t be_node_get_flags(const void *_self, const ir_node *irn)
+static arch_irn_flags_t be_node_get_flags(const void *self, const ir_node *node)
{
- be_reg_data_t *r = retrieve_reg_data(irn);
- return r ? r->req.flags : 0;
+ be_req_t *bereq;
+ int pos = -1;
+ (void) self;
+
+ if(is_Proj(node)) {
+ pos = OUT_POS(get_Proj_proj(node));
+ node = skip_Proj_const(node);
+ }
+
+ bereq = get_be_req(node, pos);
+
+ return bereq->flags;
}
static ir_entity *be_node_get_frame_entity(const void *self, const ir_node *irn)
{
+ (void) self;
return be_get_frame_entity(irn);
}
static void be_node_set_frame_entity(const void *self, ir_node *irn, ir_entity *ent)
{
be_frame_attr_t *a;
+ (void) self;
assert(be_has_frame_entity(irn));
static void be_node_set_frame_offset(const void *self, ir_node *irn, int offset)
{
+ (void) self;
if(be_has_frame_entity(irn)) {
be_frame_attr_t *a = get_irn_attr(irn);
a->offset = offset;
static int be_node_get_sp_bias(const void *self, const ir_node *irn)
{
+ (void) self;
return be_is_IncSP(irn) ? be_get_IncSP_offset(irn) : 0;
}
const void *be_node_get_irn_ops(const arch_irn_handler_t *self, const ir_node *irn)
{
redir_proj((const ir_node **) &irn);
+ (void) self;
return is_be_node(irn) ? &be_node_irn_ops : NULL;
}
*/
+typedef struct {
+ const arch_register_t *reg;
+ arch_register_req_t req;
+ arch_irn_flags_t flags;
+} phi_attr_t;
+
typedef struct {
arch_irn_handler_t irn_handler;
arch_irn_ops_t irn_ops;
const arch_env_t *arch_env;
- pmap *regs;
+ pmap *phi_attrs;
} phi_handler_t;
#define get_phi_handler_from_handler(h) container_of(h, phi_handler_t, irn_handler)
#define get_phi_handler_from_ops(h) container_of(h, phi_handler_t, irn_ops)
-static const void *phi_get_irn_ops(const arch_irn_handler_t *handler, const ir_node *irn)
+static
+const void *phi_get_irn_ops(const arch_irn_handler_t *handler,
+ const ir_node *irn)
{
- const phi_handler_t *h = get_phi_handler_from_handler(handler);
- return is_Phi(irn) && mode_is_datab(get_irn_mode(irn)) ? &h->irn_ops : NULL;
+ const phi_handler_t *h;
+ if(!is_Phi(irn) || !mode_is_datab(get_irn_mode(irn)))
+ return NULL;
+
+ h = get_phi_handler_from_handler(handler);
+ return &h->irn_ops;
+}
+
+static INLINE
+phi_attr_t *get_Phi_attr(const phi_handler_t *handler, const ir_node *phi)
+{
+ phi_attr_t *attr = pmap_get(handler->phi_attrs, (void*) phi);
+ if(attr == NULL) {
+ ir_graph *irg = get_irn_irg(phi);
+ struct obstack *obst = get_irg_obstack(irg);
+ attr = obstack_alloc(obst, sizeof(attr[0]));
+ memset(attr, 0, sizeof(attr[0]));
+ pmap_insert(handler->phi_attrs, phi, attr);
+ }
+
+ return attr;
}
/**
* Get register class of a Phi.
- *
*/
-static const arch_register_req_t *get_Phi_reg_req_recursive(const phi_handler_t *h, arch_register_req_t *req, const ir_node *phi, pset **visited)
+static
+const arch_register_req_t *get_Phi_reg_req_recursive(const phi_handler_t *h,
+ const ir_node *phi,
+ pset **visited)
{
int n = get_irn_arity(phi);
ir_node *op;
for(i = 0; i < n; ++i) {
op = get_irn_n(phi, i);
+ /* Matze: don't we unnecessary constraint our phis with this?
+ * we only need to take the regclass IMO*/
if(!is_Phi(op))
- return arch_get_register_req(h->arch_env, req, op, BE_OUT_POS(0));
+ return arch_get_register_req(h->arch_env, op, BE_OUT_POS(0));
}
/*
- The operands of that Phi were all Phis themselves.
- We have to start a DFS for a non-Phi argument now.
- */
+ * The operands of that Phi were all Phis themselves.
+ * We have to start a DFS for a non-Phi argument now.
+ */
if(!*visited)
*visited = pset_new_ptr(16);
pset_insert_ptr(*visited, phi);
for(i = 0; i < n; ++i) {
+ const arch_register_req_t *req;
op = get_irn_n(phi, i);
- if(get_Phi_reg_req_recursive(h, req, op, visited))
+ req = get_Phi_reg_req_recursive(h, op, visited);
+ if(req != NULL)
return req;
}
return NULL;
}
-static const arch_register_req_t *phi_get_irn_reg_req(const void *self, arch_register_req_t *req, const ir_node *irn, int pos)
+static
+const arch_register_req_t *phi_get_irn_reg_req(const void *self,
+ const ir_node *irn, int pos)
{
phi_handler_t *phi_handler = get_phi_handler_from_ops(self);
- pset *visited = NULL;
+ phi_attr_t *attr;
+ (void) self;
+ (void) pos;
+
+ if(!mode_is_datab(get_irn_mode(irn)))
+ return arch_no_register_req;
+
+ attr = get_Phi_attr(phi_handler, irn);
+
+ if(attr->req.type == arch_register_req_type_none) {
+ pset *visited = NULL;
+ const arch_register_req_t *req;
+ req = get_Phi_reg_req_recursive(phi_handler, irn, &visited);
- get_Phi_reg_req_recursive(phi_handler, req, irn, &visited);
- /* Set the requirements type to normal, since an operand of the Phi could have had constraints. */
- req->type = arch_register_req_type_normal;
- if(visited)
- del_pset(visited);
+ memcpy(&attr->req, req, sizeof(req[0]));
+ assert(attr->req.cls != NULL);
+ attr->req.type = arch_register_req_type_normal;
- return req;
+ if(visited != NULL)
+ del_pset(visited);
+ }
+
+ return &attr->req;
}
-static void phi_set_irn_reg(const void *self, ir_node *irn, const arch_register_t *reg)
+void be_set_phi_reg_req(const arch_env_t *arch_env, ir_node *node,
+ const arch_register_req_t *req)
+{
+ const arch_irn_ops_t *ops = arch_get_irn_ops(arch_env, node);
+ const phi_handler_t *handler = get_phi_handler_from_ops(ops);
+ phi_attr_t *attr;
+
+ assert(mode_is_datab(get_irn_mode(node)));
+
+ attr = get_Phi_attr(handler, node);
+ memcpy(&attr->req, req, sizeof(req[0]));
+}
+
+void be_set_phi_flags(const arch_env_t *arch_env, ir_node *node,
+ arch_irn_flags_t flags)
+{
+ const arch_irn_ops_t *ops = arch_get_irn_ops(arch_env, node);
+ const phi_handler_t *handler = get_phi_handler_from_ops(ops);
+ phi_attr_t *attr;
+
+ assert(mode_is_datab(get_irn_mode(node)));
+
+ attr = get_Phi_attr(handler, node);
+ attr->flags = flags;
+}
+
+static
+void phi_set_irn_reg(const void *self, ir_node *irn, const arch_register_t *reg)
{
phi_handler_t *h = get_phi_handler_from_ops(self);
- pmap_insert(h->regs, irn, (void *) reg);
+ phi_attr_t *attr = get_Phi_attr(h, irn);
+ attr->reg = reg;
}
-static const arch_register_t *phi_get_irn_reg(const void *self, const ir_node *irn)
+static
+const arch_register_t *phi_get_irn_reg(const void *self, const ir_node *irn)
{
phi_handler_t *h = get_phi_handler_from_ops(self);
- return pmap_get(h->regs, (void *) irn);
+ phi_attr_t *attr = get_Phi_attr(h, irn);
+ return attr->reg;
}
-static arch_irn_class_t phi_classify(const void *_self, const ir_node *irn)
+static
+arch_irn_class_t phi_classify(const void *self, const ir_node *irn)
{
+ (void) self;
+ (void) irn;
return arch_irn_class_normal;
}
-static arch_irn_flags_t phi_get_flags(const void *_self, const ir_node *irn)
+static
+arch_irn_flags_t phi_get_flags(const void *self, const ir_node *irn)
{
- return arch_irn_flags_none;
+ phi_handler_t *h = get_phi_handler_from_ops(self);
+ phi_attr_t *attr = get_Phi_attr(h, irn);
+ (void) self;
+ return attr->flags;
}
-static ir_entity *phi_get_frame_entity(const void *_self, const ir_node *irn)
+static
+ir_entity *phi_get_frame_entity(const void *self, const ir_node *irn)
{
+ (void) self;
+ (void) irn;
return NULL;
}
-static void phi_set_frame_entity(const void *_self, ir_node *irn, ir_entity *ent)
+static
+void phi_set_frame_entity(const void *self, ir_node *irn, ir_entity *ent)
{
+ (void) self;
+ (void) irn;
+ (void) ent;
+ assert(0);
}
-static void phi_set_frame_offset(const void *_self, ir_node *irn, int bias)
+static
+void phi_set_frame_offset(const void *self, ir_node *irn, int bias)
{
+ (void) self;
+ (void) irn;
+ (void) bias;
+ assert(0);
}
-static int phi_get_sp_bias(const void* self, const ir_node *irn)
+static
+int phi_get_sp_bias(const void* self, const ir_node *irn)
{
+ (void) self;
+ (void) irn;
return 0;
}
-static const arch_irn_ops_if_t phi_irn_ops = {
+static
+const arch_irn_ops_if_t phi_irn_ops = {
phi_get_irn_reg_req,
phi_set_irn_reg,
phi_get_irn_reg,
NULL, /* perform_memory_operand */
};
-static const arch_irn_handler_t phi_irn_handler = {
- phi_get_irn_ops
-};
-
arch_irn_handler_t *be_phi_handler_new(const arch_env_t *arch_env)
{
phi_handler_t *h = xmalloc(sizeof(h[0]));
h->irn_handler.get_irn_ops = phi_get_irn_ops;
h->irn_ops.impl = &phi_irn_ops;
h->arch_env = arch_env;
- h->regs = pmap_create();
+ h->phi_attrs = pmap_create();
return (arch_irn_handler_t *) h;
}
void be_phi_handler_free(arch_irn_handler_t *handler)
{
- phi_handler_t *h = (void *) handler;
- pmap_destroy(h->regs);
+ phi_handler_t *h = get_phi_handler_from_handler(handler);
+ pmap_destroy(h->phi_attrs);
+ h->phi_attrs = NULL;
free(handler);
}
-const void *be_phi_get_irn_ops(const arch_irn_handler_t *self, const ir_node *irn)
-{
- phi_handler_t *phi_handler = get_phi_handler_from_handler(self);
- return is_Phi(irn) ? &phi_handler->irn_ops : NULL;
-}
-
void be_phi_handler_reset(arch_irn_handler_t *handler)
{
phi_handler_t *h = get_phi_handler_from_handler(handler);
- if(h->regs)
- pmap_destroy(h->regs);
- h->regs = pmap_create();
+ if(h->phi_attrs)
+ pmap_destroy(h->phi_attrs);
+ h->phi_attrs = pmap_create();
}
/*
/**
* Dumps a register requirement to a file.
*/
-static void dump_node_req(FILE *f, int idx, be_req_t *req)
+static void dump_node_req(FILE *f, int idx, const arch_register_req_t *req,
+ const ir_node *node)
{
- unsigned i;
int did_something = 0;
char buf[16];
const char *prefix = buf;
snprintf(buf, sizeof(buf), "#%d ", idx);
buf[sizeof(buf) - 1] = '\0';
- if(req->flags != arch_irn_flags_none) {
- fprintf(f, "%sflags: ", prefix);
- prefix = "";
- for(i = arch_irn_flags_none; i <= log2_ceil(arch_irn_flags_last); ++i) {
- if(req->flags & (1 << i)) {
- fprintf(f, "%s%s", prefix, arch_irn_flag_str(1 << i));
- prefix = "|";
- }
- }
- prefix = ", ";
- did_something = 1;
- }
-
- if(req->req.cls != 0) {
+ if(req->cls != 0) {
char tmp[256];
fprintf(f, prefix);
- arch_register_req_format(tmp, sizeof(tmp), &req->req);
+ arch_register_req_format(tmp, sizeof(tmp), req, node);
fprintf(f, "%s", tmp);
did_something = 1;
}
/**
* Dumps node register requirements to a file.
*/
-static void dump_node_reqs(FILE *f, ir_node *irn)
+static void dump_node_reqs(FILE *f, ir_node *node)
{
int i;
- be_node_attr_t *a = get_irn_attr(irn);
+ be_node_attr_t *a = get_irn_attr(node);
int len = ARR_LEN(a->reg_data);
fprintf(f, "registers: \n");
fprintf(f, "#%d: %s\n", i, rd->reg->name);
}
- fprintf(f, "in requirements\n");
+ fprintf(f, "in requirements:\n");
for(i = 0; i < len; ++i) {
- dump_node_req(f, i, &a->reg_data[i].in_req);
+ dump_node_req(f, i, &a->reg_data[i].in_req.req, node);
}
- fprintf(f, "\nout requirements\n");
+ fprintf(f, "\nout requirements:\n");
for(i = 0; i < len; ++i) {
- dump_node_req(f, i, &a->reg_data[i].req);
+ dump_node_req(f, i, &a->reg_data[i].req.req, node);
}
}
fprintf(f, get_mode_name(get_irn_mode(irn)));
break;
case dump_node_nodeattr_txt:
+ if(be_is_Call(irn)) {
+ be_call_attr_t *a = (be_call_attr_t *) at;
+ if (a->ent)
+ fprintf(f, " [%s] ", get_entity_name(a->ent));
+ }
break;
case dump_node_info_txt:
dump_node_reqs(f, irn);
be_node_attr_t *old_attr = get_irn_attr(old_node);
be_node_attr_t *new_attr = get_irn_attr(new_node);
struct obstack *obst = get_irg_obstack(get_irn_irg(new_node));
- int i, len;
+ unsigned i, len;
assert(is_be_node(old_node));
assert(is_be_node(new_node));
else
len = 0;
- if(be_is_Keep(old_node) || be_is_RegParams(old_node) || be_is_Barrier(old_node)) {
+ if(get_irn_op(old_node)->opar == oparity_dynamic
+ || be_is_RegParams(old_node)) {
new_attr->reg_data = NEW_ARR_F(be_reg_data_t, len);
} else {
new_attr->reg_data = NEW_ARR_D(be_reg_data_t, obst, len);
if(len > 0) {
memcpy(new_attr->reg_data, old_attr->reg_data, len * sizeof(be_reg_data_t));
-
for(i = 0; i < len; ++i) {
- be_req_t *r;
-
- r = &new_attr->reg_data[i].req;
- r->req.limited_env = r;
-
- r = &new_attr->reg_data[i].in_req;
- r->req.limited_env = r;
+ const be_reg_data_t *rd = &old_attr->reg_data[i];
+ be_reg_data_t *newrd = &new_attr->reg_data[i];
+ if(arch_register_req_is(&rd->req.req, limited)) {
+ const arch_register_req_t *req = &rd->req.req;
+ arch_register_req_t *new_req = &newrd->req.req;
+ new_req->limited
+ = rbitset_duplicate_obstack_alloc(obst, req->limited, req->cls->n_regs);
+ }
+ if(arch_register_req_is(&rd->in_req.req, limited)) {
+ const arch_register_req_t *req = &rd->in_req.req;
+ arch_register_req_t *new_req = &newrd->in_req.req;
+ new_req->limited
+ = rbitset_duplicate_obstack_alloc(obst, req->limited, req->cls->n_regs);
+ }
}
}
}