X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbenode.c;h=5960b6fa38efbfb38235a964b323d269c718101a;hb=a81908ffad4959b183b228d61c3375553a769cc0;hp=c5feaccddcd6e46c9b8b8c7b71fce1fd752d4f2c;hpb=d8963868a1ad05a9144574a1f37131cbbabe36ba;p=libfirm

diff --git a/ir/be/benode.c b/ir/be/benode.c
index c5feaccdd..5960b6fa3 100644
--- a/ir/be/benode.c
+++ b/ir/be/benode.c
@@ -8,6 +8,7 @@
  * Copyright (C) 2005 Universitaet Karlsruhe
  * Released under the GPL
  */
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
@@ -24,6 +25,7 @@
 #include "irmode_t.h"
 #include "irnode_t.h"
 #include "ircons_t.h"
+#include "irprintf.h"
 
 #include "be_t.h"
 #include "belive_t.h"
@@ -32,103 +34,208 @@
 
 #include "beirgmod.h"
 
+#define DBG_LEVEL 0
+
 typedef enum _node_kind_t {
-  node_kind_spill,
-  node_kind_reload,
-  node_kind_perm,
-  node_kind_copy,
-  node_kind_last
+	node_kind_spill,
+	node_kind_reload,
+	node_kind_perm,
+	node_kind_copy,
+	node_kind_last
 } node_kind_t;
 
 typedef struct {
-  node_kind_t kind;
-  const arch_register_class_t *cls;
-  ir_op *op;
-  int n_pos;
-  int *pos;
+	node_kind_t kind;
+	const arch_register_class_t *cls;
+	ir_op *op;
+	int n_pos;
+	int *pos;
 } be_op_t;
 
+typedef struct {
+	const be_node_factory_t *factory;
+	int n_regs;
+	const arch_register_t *reg[1];
+} be_node_attr_t;
+
+typedef struct {
+	be_node_attr_t attr;
+	ir_node *spill_ctx;
+} be_spill_attr_t;
+
 static int templ_pos_Spill[] = {
-  arch_pos_make_in(0)
+	0
 };
 
 static int templ_pos_Reload[] = {
-  arch_pos_make_out(0)
+	-1
 };
 
 static int templ_pos_Copy[] = {
-  arch_pos_make_in(0),
-  arch_pos_make_out(0)
+	0, -1
 };
 
+static int dump_node(ir_node *irn, FILE *f, dump_reason_t reason);
+
+static const ir_op_ops be_node_ops = {
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	dump_node,
+	NULL
+};
+
+static be_node_attr_t *init_node_attr(ir_node *irn,
+		const be_node_factory_t *fact, int n_regs)
+{
+	be_node_attr_t *attr = (be_node_attr_t *) &irn->attr;
+	int i;
+
+	attr->n_regs  = n_regs;
+	attr->factory = fact;
+
+	for(i = 0; i < n_regs; ++i)
+		attr->reg[i] = NULL;
+
+	return attr;
+}
+
 #define ARRSIZE(x) (sizeof(x) / sizeof(x[0]))
 
 static int cmp_op_map(const void *a, const void *b, size_t size)
 {
-  const be_op_t *x = a;
-  const be_op_t *y = b;
+	const be_op_t *x = a;
+	const be_op_t *y = b;
 
-  return !(x->kind == y->kind && x->cls == y->cls);
+	return !(x->kind == y->kind && x->cls == y->cls);
 }
 
 static be_op_t *get_op(const be_node_factory_t *fact,
-    const arch_register_class_t *cls, node_kind_t kind)
+		const arch_register_class_t *cls, node_kind_t kind)
 {
-  be_op_t templ;
+	be_op_t templ;
 
-  templ.kind = kind;
-  templ.cls = cls;
+	templ.kind = kind;
+	templ.cls = cls;
 
-  return set_insert(fact->ops, &templ, sizeof(templ),
-      HASH_PTR(cls) + 7 * kind);
+	return set_insert(fact->ops, &templ, sizeof(templ),
+		HASH_PTR(cls) + 7 * kind);
 }
 
 ir_node *new_Spill(const be_node_factory_t *factory,
-    const arch_register_class_t *cls,
-    ir_graph *irg, ir_node *bl, ir_node *node_to_spill)
+		const arch_register_class_t *cls,
+		ir_graph *irg, ir_node *bl, ir_node *node_to_spill, ir_node *ctx)
 {
-  ir_node *in[1];
-  ir_op *op = get_op(factory, cls, node_kind_spill)->op;
-
-  assert(op && "Spill opcode must be present for this register class");
-  in[0] = node_to_spill;
-
-  return new_ir_node(NULL, irg, bl, op, mode_M, 1, in);
+	be_spill_attr_t *attr;
+	ir_node *irn;
+	ir_node *in[1];
+	ir_op *op = get_op(factory, cls, node_kind_spill)->op;
+
+	assert(op && "Spill opcode must be present for this register class");
+	in[0] = node_to_spill;
+	irn  = new_ir_node(NULL, irg, bl, op, mode_M, 1, in);
+	attr = (be_spill_attr_t *) init_node_attr(irn, factory, 0);
+	attr->spill_ctx = ctx;
+
+	return irn;
 }
 
 ir_node *new_Reload(const be_node_factory_t *factory,
-    const arch_register_class_t *cls, ir_graph *irg,
-    ir_node *bl, ir_mode *mode, ir_node *spill_node)
+		const arch_register_class_t *cls, ir_graph *irg,
+		ir_node *bl, ir_mode *mode, ir_node *spill_node)
 {
-  ir_node *in[1];
-  ir_op *op = get_op(factory, cls, node_kind_reload)->op;
+	ir_node *irn, *in[1];
+	ir_op *op = get_op(factory, cls, node_kind_reload)->op;
+
+	assert(op && "Reload opcode must be present for this register class");
+	// assert(is_Spill(factory, spill_node) && "Operand of Reload must be a Spill");
+	in[0] = spill_node;
 
-  assert(op && "Reload opcode must be present for this register class");
-  // assert(is_Spill(factory, spill_node) && "Operand of Reload must be a Spill");
-  in[0] = spill_node;
+	irn  = new_ir_node(NULL, irg, bl, op, mode, 1, in);
+	init_node_attr(irn, factory, 1);
 
-  return new_ir_node(NULL, irg, bl, op, mode, 1, in);
+	return irn;
 }
 
 ir_node *new_Perm(const be_node_factory_t *factory,
-    const arch_register_class_t *cls,
-    ir_graph *irg, ir_node *bl, int arity, ir_node **in)
+		const arch_register_class_t *cls,
+		ir_graph *irg, ir_node *bl, int arity, ir_node **in)
 {
-  ir_op *op = get_op(factory, cls, node_kind_perm)->op;
+	ir_node *irn;
+	ir_op *op = get_op(factory, cls, node_kind_perm)->op;
+
+	irn  = new_ir_node(NULL, irg, bl, op, mode_T, arity, in);
+	init_node_attr(irn, factory, arity);
 
-  return new_ir_node(NULL, irg, bl, op, mode_T, arity, in);
+	return irn;
 }
 
 ir_node *new_Copy(const be_node_factory_t *factory,
-    const arch_register_class_t *cls,
-    ir_graph *irg, ir_node *bl, ir_node *in)
+		const arch_register_class_t *cls,
+		ir_graph *irg, ir_node *bl, ir_node *in)
+{
+	ir_node *irn, *ins[1];
+	ir_op *op = get_op(factory, cls, node_kind_copy)->op;
+
+	ins[0] = in;
+
+	irn  = new_ir_node(NULL, irg, bl, op, get_irn_mode(in), 1, ins);
+	init_node_attr(irn, factory, 1);
+
+	return irn;
+}
+
+ir_node *be_spill(
+		const be_node_factory_t *factory,
+		const arch_env_t *arch_env,
+		ir_node *irn, ir_node *ctx)
 {
-  ir_node *ins[1];
-  ir_op *op = get_op(factory, cls, node_kind_perm)->op;
+	const arch_register_class_t *cls = arch_get_irn_reg_class(arch_env, irn, -1);
+
+	ir_node *bl    = get_nodes_block(irn);
+	ir_graph *irg  = get_irn_irg(bl);
+	ir_node *spill = new_Spill(factory, cls, irg, bl, irn, ctx);
+	ir_node *insert;
+
+	/*
+	 * search the right insertion point. a spill of a phi cannot be put
+	 * directly after the phi, if there are some phis behind the one which
+	 * is spilled.
+	 */
+	insert = sched_next(irn);
+	while(is_Phi(insert) && !sched_is_end(insert))
+		insert = sched_next(insert);
+
+	sched_add_before(insert, spill);
+	return spill;
+}
+
+ir_node *be_reload(const be_node_factory_t *factory,
+					 const arch_env_t *arch_env,
+					 const arch_register_class_t *cls,
+					 ir_node *irn, int pos, ir_mode *mode, ir_node *spill)
+{
+	ir_node *reload;
 
-  ins[0] = in;
+	ir_node *bl   = get_nodes_block(irn);
+	ir_graph *irg = get_irn_irg(bl);
 
-  return new_ir_node(NULL, irg, bl, op, get_irn_mode(in), 1, ins);
+	assert(is_Spill(factory, spill)
+			|| (is_Phi(spill) && get_irn_mode(spill) == mode_M));
+
+	reload = new_Reload(factory, cls, irg, bl, mode, spill);
+
+	set_irn_n(irn, pos, reload);
+	sched_add_before(irn, reload);
+	return reload;
 }
 
 /**
@@ -142,246 +249,324 @@ ir_node *new_Copy(const be_node_factory_t *factory,
  */
 static int redir_proj(const ir_node **node, int def)
 {
-  const ir_node *n = *node;
+	const ir_node *n = *node;
 
-  if(is_Proj(n)) {
-    *node = get_Proj_pred(n);
-    def = get_Proj_proj(n);
-  }
+	if(is_Proj(n)) {
+		*node = get_Proj_pred(n);
+		def = -(get_Proj_proj(n) + 1);
+	}
 
-  return def;
+	return def;
 }
 
 static const arch_register_req_t *
 be_node_get_irn_reg_req(const arch_irn_ops_t *_self,
-    arch_register_req_t *req, const ir_node *irn, int pos)
+		arch_register_req_t *req, const ir_node *irn, int pos)
 {
-  be_op_t *bo;
-  const be_node_factory_t *factory =
-    container_of(_self, const be_node_factory_t, irn_ops);
-
-  pos = arch_pos_make_out(redir_proj(&irn, arch_pos_get_index(pos)));
+	be_op_t *bo;
+	const be_node_factory_t *factory =
+		container_of(_self, const be_node_factory_t, irn_ops);
 
-  bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
+	if(get_irn_mode(irn) == mode_T && pos < 0)
+		return NULL;
 
-  if(bo) {
-    int i;
+	/*
+	 * were interested in an output operand, so
+	 * let's resolve projs.
+	 */
+	if(pos < 0)
+		pos = redir_proj((const ir_node **) &irn, pos);
 
-    req->type = arch_register_req_type_normal;
-    req->cls = bo->cls;
+	bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
 
-    for(i = 0; i < bo->n_pos; ++pos)
-      if(pos == bo->pos[i])
-        return req;
-  }
+	if(bo) {
+		int i;
 
-  return NULL;
-}
-
-static int
-be_node_get_n_operands(const arch_irn_ops_t *_self, const ir_node *irn, int in_out)
-{
-  be_op_t *bo;
-  int i, res = 0;
-  const be_node_factory_t *factory =
-    container_of(_self, const be_node_factory_t, irn_ops);
+		req->type = arch_register_req_type_normal;
+		req->cls  = bo->cls;
 
-  redir_proj(&irn, 0);
-  bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
+		for(i = 0; i < bo->n_pos; ++i)
+			if(pos == bo->pos[i])
+				return req;
+	}
 
-  for(i = 0; i < bo->n_pos; ++i)
-    res += (bo->pos[i] ^ in_out) > 0;
-
-  return res;
+	return NULL;
 }
 
 void
 be_node_set_irn_reg(const arch_irn_ops_t *_self, ir_node *irn,
-    int idx, const arch_register_t *reg)
+		const arch_register_t *reg)
 {
-  const arch_register_t **regs;
+	int pos;
+	be_op_t *bo;
+	be_node_attr_t *attr;
+	const be_node_factory_t *factory =
+		container_of(_self, const be_node_factory_t, irn_ops);
+
+	if(get_irn_mode(irn) == mode_T && pos < 0)
+		return;
+
+	pos = redir_proj((const ir_node **) &irn, -1);
+	bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
 
-  idx = redir_proj((const ir_node **) &irn, idx);
-  regs = (const arch_register_t **) &irn->attr;
-  regs[idx] = reg;
+	if(!bo)
+		return;
+
+	attr = (be_node_attr_t *) &irn->attr;
+	attr->reg[-pos - 1] = reg;
 }
 
 const arch_register_t *
-be_node_get_irn_reg(const arch_irn_ops_t *_self, const ir_node *irn, int idx)
+be_node_get_irn_reg(const arch_irn_ops_t *_self, const ir_node *irn)
 {
-  const arch_register_t **regs;
+	int i, pos;
+	be_op_t *bo;
+	const be_node_factory_t *factory =
+		container_of(_self, const be_node_factory_t, irn_ops);
+
+	if(get_irn_mode(irn) == mode_T && pos < 0)
+		return NULL;
+
+	pos = redir_proj((const ir_node **) &irn, -1);
+	bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
 
-  idx = redir_proj(&irn, idx);
-  regs = (const arch_register_t **) &irn->attr;
-  return regs[idx];
+	if(!bo)
+		return NULL;
+
+	for(i = 0; i < bo->n_pos; ++i) {
+		if(bo->pos[i] == pos) {
+			be_node_attr_t *attr = (be_node_attr_t *) &irn->attr;
+			return attr->reg[-pos - 1];
+		}
+	}
+
+	return NULL;
 }
 
 arch_irn_class_t be_node_classify(const arch_irn_ops_t *_self, const ir_node *irn)
 {
-  const be_node_factory_t *factory =
-    container_of(_self, const be_node_factory_t, irn_ops);
-
-  be_op_t *bo;
-  int idx;
-
-  idx = redir_proj(&irn, 0);
-  bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
+	const be_node_factory_t *factory = container_of(_self, const be_node_factory_t, irn_ops);
+
+	be_op_t *bo;
+	int idx;
+
+	idx = redir_proj(&irn, 0);
+	bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
+
+	switch(bo->kind) {
+#define XXX(a) case node_kind_ ## a: return arch_irn_class_ ## a;
+		XXX(spill)
+		XXX(reload)
+		XXX(perm)
+		XXX(copy)
+#undef XXX
+		default:
+		return 0;
+	}
+
+	return 0;
+}
 
-  return 0;
+arch_irn_class_t be_node_get_flags(const arch_irn_ops_t *_self, const ir_node *irn)
+{
+	return 0;
 }
 
 static const arch_irn_ops_t *
 be_node_get_irn_ops(const arch_irn_handler_t *_self, const ir_node *irn)
 {
-  be_op_t *bo;
-  const be_node_factory_t *factory =
-    container_of(_self, const be_node_factory_t, handler);
+	be_op_t *bo;
+	const be_node_factory_t *factory =
+		container_of(_self, const be_node_factory_t, handler);
 
-  redir_proj(&irn, 0);
-  bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
+	redir_proj(&irn, 0);
+	bo = pmap_get(factory->irn_op_map, get_irn_op(irn));
 
-  return bo ? &factory->irn_ops : NULL;
+	return bo ? &factory->irn_ops : NULL;
 }
 
 const arch_irn_handler_t *be_node_get_irn_handler(const be_node_factory_t *f)
 {
-  return &f->handler;
+	return &f->handler;
 }
 
 int is_Spill(const be_node_factory_t *f, const ir_node *irn)
 {
-  be_op_t *bo;
-  bo = pmap_get(f->irn_op_map, get_irn_op(irn));
-  return bo->kind == node_kind_spill;
+	be_op_t *bo;
+	bo = pmap_get(f->irn_op_map, get_irn_op(irn));
+	return bo != NULL && bo->kind == node_kind_spill;
+}
+
+be_node_factory_t *be_node_factory_init(be_node_factory_t *factory, const arch_isa_t *isa)
+{
+	int i, j, n;
+
+	factory->ops = new_set(cmp_op_map, 64);
+	factory->irn_op_map = pmap_create();
+	obstack_init(&factory->obst);
+
+	factory->handler.get_irn_ops = be_node_get_irn_ops;
+
+	factory->irn_ops.get_irn_reg_req = be_node_get_irn_reg_req;
+	factory->irn_ops.set_irn_reg     = be_node_set_irn_reg;
+	factory->irn_ops.get_irn_reg     = be_node_get_irn_reg;
+	factory->irn_ops.classify        = be_node_classify;
+	factory->irn_ops.get_flags       = be_node_get_flags;
+
+	for(i = 0, n = arch_isa_get_n_reg_class(isa); i < n; ++i) {
+		const arch_register_class_t *cls = arch_isa_get_reg_class(isa, i);
+		be_op_t *ent;
+
+		ent = get_op(factory, cls, node_kind_spill);
+		ent->op = new_ir_op(get_next_ir_opcode(), "Spill", op_pin_state_pinned,
+				0, oparity_unary, 0, sizeof(be_spill_attr_t), &be_node_ops);
+		ent->n_pos = ARRSIZE(templ_pos_Spill);
+		ent->pos = templ_pos_Spill;
+		pmap_insert(factory->irn_op_map, ent->op, ent);
+
+		ent = get_op(factory, cls, node_kind_reload);
+		ent->op = new_ir_op(get_next_ir_opcode(), "Reload", op_pin_state_pinned, 0,
+				oparity_unary, 0, sizeof(be_node_attr_t), &be_node_ops);
+		ent->n_pos = ARRSIZE(templ_pos_Reload);
+		ent->pos = templ_pos_Reload;
+		pmap_insert(factory->irn_op_map, ent->op, ent);
+
+		ent = get_op(factory, cls, node_kind_copy);
+		ent->op = new_ir_op(get_next_ir_opcode(), "Copy", op_pin_state_pinned, 0,
+				oparity_unary, 0, sizeof(be_node_attr_t), &be_node_ops);
+		ent->n_pos = ARRSIZE(templ_pos_Copy);
+		ent->pos = templ_pos_Copy;
+		pmap_insert(factory->irn_op_map, ent->op, ent);
+
+		ent = get_op(factory, cls, node_kind_perm);
+		ent->op = new_ir_op(get_next_ir_opcode(), "Perm", op_pin_state_pinned, 0,
+				oparity_variable, 0,
+				sizeof(be_node_attr_t) + sizeof(arch_register_t) * cls->n_regs, &be_node_ops);
+		ent->n_pos = 2 * cls->n_regs;
+		ent->pos = obstack_alloc(&factory->obst, sizeof(ent->pos[0]) * ent->n_pos);
+		for(j = 0; j < ent->n_pos; j += 2) {
+			int k = j / 2;
+			ent->pos[j] = k;
+			ent->pos[j + 1] = -(k + 1);
+		}
+		pmap_insert(factory->irn_op_map, ent->op, ent);
+
+	}
+
+	return factory;
 }
 
-be_node_factory_t *be_node_factory_init(be_node_factory_t *factory,
-    const arch_isa_if_t *isa)
+static int dump_node(ir_node *irn, FILE *f, dump_reason_t reason)
 {
-  char buf[256];
-  int i, j, n;
-
-  factory->ops = new_set(cmp_op_map, 64);
-  factory->irn_op_map = pmap_create();
-  obstack_init(&factory->obst);
-
-  factory->handler.get_irn_ops = be_node_get_irn_ops;
-
-  factory->irn_ops.get_irn_reg_req = be_node_get_irn_reg_req;
-  factory->irn_ops.get_n_operands  = be_node_get_n_operands;
-  factory->irn_ops.set_irn_reg     = be_node_set_irn_reg;
-  factory->irn_ops.get_irn_reg     = be_node_get_irn_reg;
-  factory->irn_ops.classify        = be_node_classify;
-
-  for(i = 0, n = isa->get_n_reg_class(); i < n; ++i) {
-    const arch_register_class_t *cls = isa->get_reg_class(i);
-    be_op_t *ent;
-
-    ent = get_op(factory, cls, node_kind_spill);
-    snprintf(buf, sizeof(buf), "Spill_%s", cls->name);
-    ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned,
-        0, 0, oparity_unary, 0);
-    ent->n_pos = ARRSIZE(templ_pos_Spill);
-    ent->pos = templ_pos_Spill;
-    pmap_insert(factory->irn_op_map, ent->op, ent);
-
-    ent = get_op(factory, cls, node_kind_reload);
-    snprintf(buf, sizeof(buf), "Reload_%s", cls->name);
-    ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned, 0, 0,
-        oparity_unary, sizeof(const arch_register_t *));
-    ent->n_pos = ARRSIZE(templ_pos_Reload);
-    ent->pos = templ_pos_Reload;
-    pmap_insert(factory->irn_op_map, ent->op, ent);
-
-    ent = get_op(factory, cls, node_kind_copy);
-    snprintf(buf, sizeof(buf), "Copy_%s", cls->name);
-    ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned, 0, 0,
-        oparity_unary, sizeof(const arch_register_t *));
-    ent->n_pos = ARRSIZE(templ_pos_Copy);
-    ent->pos = templ_pos_Copy;
-    pmap_insert(factory->irn_op_map, ent->op, ent);
-
-    ent = get_op(factory, cls, node_kind_perm);
-    snprintf(buf, sizeof(buf), "Perm_%s", cls->name);
-    ent->op = new_ir_op(get_next_ir_opcode(), buf, op_pin_state_pinned, 0, 0,
-        oparity_variable, sizeof(const arch_register_t) * cls->n_regs);
-    ent->n_pos = 2 * cls->n_regs;
-    ent->pos = obstack_alloc(&factory->obst, sizeof(ent->pos[0]) * ent->n_pos);
-    for(j = 0; j < ent->n_pos; j += 2) {
-      ent->pos[j] = arch_pos_make_in(j);
-      ent->pos[j + 1] = arch_pos_make_out(j);
-    }
-    pmap_insert(factory->irn_op_map, ent->op, ent);
-
-  }
-
-  return factory;
+	be_node_attr_t *attr = (be_node_attr_t *) &irn->attr;
+	be_op_t *bo          = pmap_get(attr->factory->irn_op_map, get_irn_op(irn));
+
+	int i;
+
+	switch(reason) {
+		case dump_node_opcode_txt:
+			fprintf(f, get_op_name(bo->op));
+			break;
+		case dump_node_mode_txt:
+			fprintf(f, get_mode_name(get_irn_mode(irn)));
+			break;
+		case dump_node_nodeattr_txt:
+			fprintf(f, "%s ", bo->cls->name);
+			break;
+		case dump_node_info_txt:
+			for(i = 0; i < attr->n_regs; ++i) {
+				const arch_register_t *reg = attr->reg[i];
+				fprintf(f, "reg #%d: %s\n", i, reg ? reg->name : "n/a");
+			}
+
+			if(bo->kind == node_kind_spill) {
+				be_spill_attr_t *a = (be_spill_attr_t *) attr;
+				ir_fprintf(f, "spill context: %+F\n", a->spill_ctx);
+			}
+			break;
+	}
+
+	return 1;
 }
 
-ir_node *insert_Perm_after(const be_main_session_env_t *env,
-    const arch_register_class_t *cls, ir_node *pos)
+ir_node *insert_Perm_after(const be_main_env_t *env,
+							 const arch_register_class_t *cls,
+							 dom_front_info_t *dom_front,
+							 ir_node *pos)
 {
-  const arch_env_t *arch_env = env->main_env->arch_env;
-  ir_node *bl = is_Block(pos) ? pos : get_nodes_block(pos);
-  ir_graph *irg = get_irn_irg(bl);
-  pset *live = put_live_end(bl, pset_new_ptr_default());
-  ir_node *curr, *irn, *perm, **nodes;
-  firm_dbg_module_t *dbg = firm_dbg_register("firm.be.node");
-  int i, n;
-
-  DBG((dbg, LEVEL_1, "Insert Perm after: %+F\n", pos));
-
-  sched_foreach_reverse(bl, irn) {
-    ir_node *x;
-
-    DBG((dbg, LEVEL_1, "%+F\n", irn));
-    for(x = pset_first(live); x; x = pset_next(live))
-      DBG((dbg, LEVEL_1, "\tlive: %+F\n", x));
-
-    if(arch_irn_has_reg_class(arch_env, irn, arch_pos_make_out(0), cls))
-      pset_remove_ptr(live, irn);
-
-    /*
-     * Consider the definition of the node, but not the uses, since
-     * newly created liveranges by the node after which the perm is
-     * located are not of interest for the perm.
-     */
-    if(irn == pos)
-      break;
-
-    for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
-      ir_node *op = get_irn_n(irn, i);
-
-      if(arch_irn_has_reg_class(arch_env, op, arch_pos_make_out(0), cls))
-        pset_insert_ptr(live, op);
-    }
-  }
-
-  n = pset_count(live);
-  nodes = malloc(n * sizeof(nodes[0]));
-
-  for(irn = pset_first(live), i = 0; irn; irn = pset_next(live), i++)
-    nodes[i] = irn;
-
-  perm = new_Perm(env->main_env->node_factory, cls, irg, bl, n, nodes);
-  sched_add_after(pos, perm);
-  free(nodes);
-
-  curr = perm;
-  for(i = 0; i < n; ++i) {
-    ir_node *copies[1];
-    ir_node *perm_op = get_irn_n(perm, i);
-	const arch_register_t *reg = arch_get_irn_register(arch_env, perm_op, arch_pos_make_out(0));
-
-    ir_mode *mode = get_irn_mode(perm_op);
-    ir_node *proj = new_r_Proj(irg, bl, perm, mode, i);
-    arch_set_irn_register(arch_env, proj, arch_pos_make_out(0), reg);
-
-    sched_add_after(curr, proj);
-    curr = proj;
-
-    copies[0] = proj;
-    be_introduce_copies(env->dom_front, perm_op, array_size(copies), copies);
-  }
-  return perm;
+	const arch_env_t *arch_env  = env->arch_env;
+	ir_node *bl                 = is_Block(pos) ? pos : get_nodes_block(pos);
+	ir_graph *irg               = get_irn_irg(bl);
+	pset *live                  = pset_new_ptr_default();
+	firm_dbg_module_t *dbg      = firm_dbg_register("firm.be.node");
+
+	irn_live_t *li;
+	ir_node *curr, *irn, *perm, **nodes;
+	int i, n;
+
+	firm_dbg_set_mask(dbg, DBG_LEVEL);
+	DBG((dbg, LEVEL_1, "Insert Perm after: %+F\n", pos));
+
+
+	live_foreach(bl, li) {
+		ir_node *irn = (ir_node *) li->irn;
+		if(live_is_end(li) && arch_irn_has_reg_class(arch_env, irn, -1, cls))
+			pset_insert_ptr(live, irn);
+	}
+
+	sched_foreach_reverse(bl, irn) {
+		ir_node *x;
+
+	/*
+	 * If we encounter the node we want to insert the Perm after,
+	 * exit immediately, so that this node is still live
+	 */
+		if(irn == pos)
+			break;
+
+		DBG((dbg, LEVEL_1, "%+F\n", irn));
+		for(x = pset_first(live); x; x = pset_next(live))
+			DBG((dbg, LEVEL_1, "\tlive: %+F\n", x));
+
+		if(arch_irn_has_reg_class(arch_env, irn, -1, cls))
+			pset_remove_ptr(live, irn);
+
+		for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
+			ir_node *op = get_irn_n(irn, i);
+
+			if(arch_irn_has_reg_class(arch_env, op, -1, cls))
+				pset_insert_ptr(live, op);
+		}
+	}
+
+	n = pset_count(live);
+	nodes = malloc(n * sizeof(nodes[0]));
+
+	DBG((dbg, LEVEL_1, "live:\n"));
+	for(irn = pset_first(live), i = 0; irn; irn = pset_next(live), i++) {
+		DBG((dbg, LEVEL_1, "\t%+F\n", irn));
+		nodes[i] = irn;
+	}
+
+	perm = new_Perm(env->node_factory, cls, irg, bl, n, nodes);
+	sched_add_after(pos, perm);
+	free(nodes);
+
+	curr = perm;
+	for(i = 0; i < n; ++i) {
+		ir_node *copies[1];
+		ir_node *perm_op = get_irn_n(perm, i);
+	const arch_register_t *reg = arch_get_irn_register(arch_env, perm_op);
+
+		ir_mode *mode = get_irn_mode(perm_op);
+		ir_node *proj = new_r_Proj(irg, bl, perm, mode, i);
+		arch_set_irn_register(arch_env, proj, reg);
+
+		sched_add_after(curr, proj);
+		curr = proj;
+
+		copies[0] = proj;
+		be_introduce_copies(dom_front, perm_op, array_size(copies), copies);
+	}
+	return perm;
 }