X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeirg.h;h=81eef9a5ca5466fbca1e80d08602f66771002fee;hb=40db13dafa724caf3f38f76539cf107cd4c1a376;hp=d9759ed12972dbf2fe50093b1337c357ff65cc9e;hpb=39f3a8dbd0f00f90b7b12a849d1bf7b9c1329479;p=libfirm

diff --git a/ir/be/beirg.h b/ir/be/beirg.h
index d9759ed12..81eef9a5c 100644
--- a/ir/be/beirg.h
+++ b/ir/be/beirg.h
@@ -1,5 +1,5 @@
 /*
- * 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.
  *
@@ -22,35 +22,109 @@
  * @brief       Backend irg - a ir_graph with additional analysis information.
  * @author      Matthias Braun
  * @date        05.05.2006
- * @version     $Id$
  */
 #ifndef FIRM_BE_BEIRG_H
 #define FIRM_BE_BEIRG_H
 
-#include "execfreq.h"
-#include "belive.h"
-#include "bedomfront.h"
+#include "be.h"
+#include "be_types.h"
+#include "be_t.h"
+#include "irtypes.h"
 
-typedef struct be_irg_t be_irg_t;
+void be_assure_live_sets(ir_graph *irg);
+void be_assure_live_chk(ir_graph *irg);
+/**
+ * Liveness is invalid (call when nodes have been added but the control
+ * flow has not been changed)
+ */
+void be_invalidate_live_sets(ir_graph *irg);
+/**
+ * Call when control flow has changed.
+ * be_invalidate_live_sets() is called.
+ */
+void be_invalidate_live_chk(ir_graph *irg);
 
-ir_graph *be_get_birg_irg(const be_irg_t *birg);
+/**
+ * frees all memory allocated by birg structures (liveness, ...).
+ * The memory of the birg structure itself is not freed.
+ */
+void be_free_birg(ir_graph *irg);
 
-void be_assure_liveness(be_irg_t *birg);
-void be_invalidate_liveness(be_irg_t *birg);
-be_lv_t *be_get_birg_liveness(const be_irg_t *birg);
+/** The number of parts of the stack layout. */
+#define N_FRAME_TYPES 3
 
-void be_assure_dom_front(be_irg_t *birg);
-void be_invalidate_dom_front(be_irg_t *birg);
-be_dom_front_info_t *be_get_birg_dom_front(const be_irg_t *birg);
+/**
+ * This type describes the stack layout.
+ * The stack is divided into 3 parts:
+ * - arg_type:     A struct type describing the stack arguments and its order.
+ * - between_type: A struct type describing the stack layout between arguments
+ *                 and frame type. In architectures that put the return address
+ *                 automatically on the stack, the return address is put here.
+ * - frame_type:   A class type describing the frame layout.
+ */
+struct be_stack_layout_t {
+	ir_type *arg_type;             /**< A type describing the stack argument layout. */
+	ir_type *between_type;         /**< A type describing the "between" layout. */
+	ir_type *frame_type;           /**< The frame type. */
 
-const arch_env_t *be_get_birg_arch_env(const be_irg_t *birg);
+	ir_type *order[N_FRAME_TYPES]; /**< arg, between and frame types ordered. */
 
-ir_exec_freq *be_get_birg_exec_freq(const be_irg_t *birg);
+	int initial_offset;            /**< the initial difference between stack pointer and frame pointer */
+	int initial_bias;              /**< the initial stack bias */
+	bool sp_relative : 1;          /**< entities are addressed relative to
+	                                    stack pointer (omit-fp mode) */
+};
 
 /**
- * frees all memory allocated by birg structures (liveness, dom_front, ...).
- * The memory of the birg structure itself is not freed.
+ * An ir_graph with additional analysis data about this irg. Also includes some
+ * backend structures
  */
-void be_free_birg(be_irg_t *birg);
+typedef struct be_irg_t {
+	be_main_env_t             *main_env;
+	be_lv_t                   *lv;
+	be_stack_layout_t          stack_layout;
+	unsigned                  *allocatable_regs; /**< registers available for the
+	                                                  allocator */
+	arch_register_req_t const *sp_req;           /**< requirements for stackpointer producing
+	                                                  nodes. */
+	struct obstack             obst;             /**< birg obstack (mainly used to keep
+	                                                  register constraints which we can't keep
+	                                                  in the irg obst, because it gets replaced
+	                                                  during code selection) */
+	void                      *isa_link;         /**< architecture specific per-graph data*/
+} be_irg_t;
+
+static inline be_irg_t *be_birg_from_irg(const ir_graph *irg)
+{
+	return (be_irg_t*) irg->be_data;
+}
+
+static inline be_main_env_t *be_get_irg_main_env(const ir_graph *irg)
+{
+	return be_birg_from_irg(irg)->main_env;
+}
+
+static inline be_lv_t *be_get_irg_liveness(const ir_graph *irg)
+{
+	return be_birg_from_irg(irg)->lv;
+}
+
+static inline const arch_env_t *be_get_irg_arch_env(const ir_graph *irg)
+{
+	return be_birg_from_irg(irg)->main_env->arch_env;
+}
+
+static inline struct obstack *be_get_be_obst(const ir_graph *irg)
+{
+	be_irg_t       *const birg = be_birg_from_irg(irg);
+	struct obstack *const obst = &birg->obst;
+	assert(obstack_object_size(obst) == 0);
+	return obst;
+}
+
+static inline be_stack_layout_t *be_get_irg_stack_layout(const ir_graph *irg)
+{
+	return &be_birg_from_irg(irg)->stack_layout;
+}
 
-#endif /* FIRM_BE_BEIRG_H */
+#endif