-/**
- * @file benode_t.h
- * @date 17.05.2005
- * @author Sebastian Hack
+/*
+ * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ *
+ * This file is part of libFirm.
*
- * Backend node support.
+ * 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 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.
*/
-#ifndef _BENODE_T_H
-#define _BENODE_T_H
+/**
+ * @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.
+ */
+#ifndef FIRM_BE_BENODE_T_H
+#define FIRM_BE_BENODE_T_H
-#include "firm_config.h"
-#include "pmap.h"
+#include <limits.h>
-#include "irmode.h"
+#include "firm_types.h"
#include "irnode.h"
-#include "entity_t.h"
-
-#include "be_t.h"
#include "bearch.h"
#define BE_OUT_POS(p) (-((p) + 1))
extern ir_op *op_be_Spill;
extern ir_op *op_be_Reload;
extern ir_op *op_be_Perm;
+extern ir_op *op_be_MemPerm;
extern ir_op *op_be_Copy;
extern ir_op *op_be_Keep;
extern ir_op *op_be_CopyKeep;
extern ir_op *op_be_Return;
extern ir_op *op_be_IncSP;
extern ir_op *op_be_AddSP;
-extern ir_op *op_be_SetSP;
+extern ir_op *op_be_SubSP;
extern ir_op *op_be_RegParams;
-extern ir_op *op_be_StackParam;
extern ir_op *op_be_FrameAddr;
-extern ir_op *op_be_FrameLoad;
-extern ir_op *op_be_FrameStore;
extern ir_op *op_be_Barrier;
typedef enum {
- beo_NoBeOp = 0,
+ beo_NoBeOp = -1,
beo_Spill,
beo_Reload,
beo_Perm,
+ beo_MemPerm,
beo_Copy,
beo_Keep,
beo_CopyKeep,
beo_Call,
beo_Return,
beo_AddSP,
+ beo_SubSP,
beo_IncSP,
- beo_SetSP,
beo_RegParams,
- beo_StackParam,
- beo_FrameLoad,
- beo_FrameStore,
beo_FrameAddr,
beo_Barrier,
beo_Last
} be_opcode_t;
-/** Expresses the direction of the stack pointer increment of IncSP nodes. */
-typedef enum {
- be_stack_dir_expand = 0,
- be_stack_dir_shrink = 1
-} be_stack_dir_t;
-
/** Not used yet. */
typedef enum {
be_frame_flag_spill = 1,
* A "symbolic constant" for the size of the stack frame to use with IncSP nodes.
* It gets back-patched to the real size as soon it is known.
*/
-#define BE_STACK_FRAME_SIZE ((unsigned) -1)
+#define BE_STACK_FRAME_SIZE_EXPAND INT_MAX
+#define BE_STACK_FRAME_SIZE_SHRINK INT_MIN
+
+/**
+ * Determines if irn is a be_node.
+ */
+int is_be_node(const ir_node *irn);
/**
* Create all BE specific opcodes.
*/
void be_node_init(void);
+/**
+ * Position numbers for the be_Spill inputs.
+ */
enum {
be_pos_Spill_frame = 0,
be_pos_Spill_val = 1
};
-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 *node_to_spill, ir_node *ctx);
+/**
+ * Make a new Spill node.
+ */
+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);
+
+/**
+ * Position numbers for the be_Reload inputs.
+ */
enum {
be_pos_Reload_frame = 0,
be_pos_Reload_mem = 1
};
-ir_node *be_new_Reload(const arch_register_class_t *cls, const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_node *frame, ir_node *spill_node, ir_mode *mode);
+/**
+ * Make a new Reload node.
+ */
+ir_node *be_new_Reload(const arch_register_class_t *cls, const arch_register_class_t *cls_frame,
+ ir_graph *irg, ir_node *bl, ir_node *frame, ir_node *mem, ir_mode *mode);
+
+/**
+ * Position numbers for the be_Copy inputs.
+ */
enum {
be_pos_Copy_op = 0
};
+
+/**
+ * Make a new Copy node.
+ */
ir_node *be_new_Copy(const arch_register_class_t *cls, ir_graph *irg, ir_node *block, ir_node *in);
+/** Returns the Copy Argument. */
ir_node *be_get_Copy_op(const ir_node *cpy);
+/** Sets the Copy Argument. */
+void be_set_Copy_op(ir_node *cpy, ir_node *op);
+/**
+ * Make a new Perm node.
+ */
ir_node *be_new_Perm(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int arity, ir_node *in[]);
+
+/**
+ * Reduce a Perm.
+ * Basically, we provide a map to remap the Perm's arguments. If an entry in the
+ * map is -1, the argument gets deleted.
+ * This function takes care, that the register data and the input array reflects
+ * the changes described by the map.
+ * This is needed by the Perm optimization/movement in belower.c, see push_through_perm().
+ * @param perm The perm node.
+ * @param new_size The new number of arguments (must be smaller or equal to the current one).
+ * @param map A map assigning each operand a new index (or -1 to indicate deletion).
+ */
+void be_Perm_reduce(ir_node *perm, int new_size, int *map);
+
+/**
+ * Create a new MemPerm node.
+ */
+ir_node *be_new_MemPerm(const arch_env_t *arch_env, ir_graph *irg, ir_node *bl, int n, ir_node *in[]);
ir_node *be_new_Keep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int arity, ir_node *in[]);
-ir_node *be_new_FrameLoad(const arch_register_class_t *cls_frame, const arch_register_class_t *cls_data,
- ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *frame, entity *ent);
-ir_node *be_new_FrameStore(const arch_register_class_t *cls_frame, const arch_register_class_t *cls_data,
- ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *frame, ir_node *data, entity *ent);
-ir_node *be_new_FrameAddr(const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_node *frame, entity *ent);
+void be_Keep_add_node(ir_node *keep, const arch_register_class_t *cls, ir_node *node);
+/**
+ * Position numbers for the be_FrameAddr inputs
+ */
+enum {
+ be_pos_FrameAddr_ptr = 0
+};
+
+/** Create a new FrameAddr node. */
+ir_node *be_new_FrameAddr(const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_node *frame, ir_entity *ent);
+
+/** Return the frame input of a FrameAddr node. */
+ir_node *be_get_FrameAddr_frame(const ir_node *node);
+
+ir_entity *be_get_FrameAddr_entity(const ir_node *node);
+
+/**
+ * Position numbers for the be_AddSP inputs
+ */
enum {
be_pos_AddSP_old_sp = 0,
be_pos_AddSP_size = 1,
be_pos_AddSP_last = 2
};
+enum {
+ pn_be_AddSP_sp = 0,
+ pn_be_AddSP_res = 1,
+ pn_be_AddSP_M = 2,
+ pn_be_AddSP_last = 3
+};
+
/**
* Make a new AddSP node.
* An AddSP node expresses an increase of the stack pointer in the direction the stack
*/
ir_node *be_new_AddSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *sz);
-ir_node *be_new_SetSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *operand, ir_node *mem);
+/**
+ * Position numbers for the be_SubSP inputs
+ */
+enum {
+ be_pos_SubSP_old_sp = 0,
+ be_pos_SubSP_size = 1,
+ be_pos_SubSP_last = 2
+};
+
+enum {
+ pn_be_SubSP_sp = 0,
+ pn_be_SubSP_M = 1,
+ pn_be_SubSP_last = 2
+};
+
+/**
+ * Make a new SubSP node.
+ * A SubSP node expresses a decrease of the stack pointer in the direction the stack
+ * grows. In contrast to IncSP, the amount of bytes the stack pointer is grown, is not
+ * given by a constant but an ordinary Firm node.
+ * @param sp The stack pointer register.
+ * @param irg The graph.
+ * @param bl The block.
+ * @param old_sp The node representing the old stack pointer value.
+ * @param sz The node expressing the size by which the stack pointer shall be grown.
+ * @return A new DecSP node.
+ */
+ir_node *be_new_SubSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *sz);
/**
* Make a stack pointer increase/decrease node.
* @param irg The graph to insert the node to.
* @param bl The block to insert the node into.
* @param old_sp The node defining the former stack pointer.
- * @param amount The mount of bytes the stack pointer shall be increased/decreased.
+ * @param amount The mount of bytes the stack shall be expanded/shrinked (see set_IncSP_offset)
* @param dir The direction in which the stack pointer shall be modified:
* Along the stack's growing direction or against.
* @return A new stack pointer increment/decrement node.
* @note This node sets a register constraint to the @p sp register on its output.
*/
-ir_node *be_new_IncSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *mem, unsigned amount, be_stack_dir_t dir);
+ir_node *be_new_IncSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, int offset);
/** Returns the previous node that computes the stack pointer. */
ir_node *be_get_IncSP_pred(ir_node *incsp);
-/** Sets a new offset to a IncSP node. */
-void be_set_IncSP_offset(ir_node *irn, unsigned offset);
-
-/** Gets the offset from a IncSP node. */
-unsigned be_get_IncSP_offset(const ir_node *irn);
+/** Sets the previous node that computes the stack pointer. */
+void be_set_IncSP_pred(ir_node *incsp, ir_node *pred);
-/** Sets a new direction to a IncSP node. */
-void be_set_IncSP_direction(ir_node *irn, be_stack_dir_t dir);
+/**
+ * Sets a new offset to a IncSP node.
+ * A positive offset means expanding the stack, a negative offset shrinking
+ * an offset is == BE_STACK_FRAME_SIZE will be replaced by the real size of the
+ * stackframe in the fix_stack_offsets phase.
+ */
+void be_set_IncSP_offset(ir_node *irn, int offset);
-/** Gets the direction from a IncSP node. */
-be_stack_dir_t be_get_IncSP_direction(const ir_node *irn);
+/** Gets the offset from a IncSP node. */
+int be_get_IncSP_offset(const ir_node *irn);
/** Gets the call entity or NULL if this is no static call. */
-entity *be_Call_get_entity(const ir_node *call);
+ir_entity *be_Call_get_entity(const ir_node *call);
/** Sets the call entity. */
-void be_Call_set_entity(ir_node *call, entity *ent);
+void be_Call_set_entity(ir_node *call, ir_entity *ent);
/** Gets the call type. */
ir_type *be_Call_get_type(ir_node *call);
/** Sets the call type. */
void be_Call_set_type(ir_node *call, ir_type *call_tp);
+/**
+ * Position numbers for the be_Call inputs.
+ */
enum {
be_pos_Call_mem = 0, /**< memory input of a be_Call node */
be_pos_Call_sp = 1, /**< stack pointer input of a be_Call node */
} pn_be_Call;
/**
- * Construct a new be_Call
+ * Construct a new be_Call.
+ *
+ * @param dbg debug info
+ * @param irg the graph where the call is placed
+ * @param bl the block where the call is placed
+ * @param mem the memory input of the call
+ * @param sp the stack pointer input of the call
+ * @param ptr the address of the called function, if immediate call set to sp
+ * @param n_outs the number of outcoming values from this call
+ * @param n the number of (register) inputs of this call
+ * @param in the (register) inputs of this call
+ * @param call_tp the call type of this 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
+ * Position numbers for the be_Return inputs.
*/
-ir_node *be_new_Return(dbg_info *dbg, ir_graph *irg, ir_node *bl, int n, ir_node *in[]);
-ir_node *be_new_StackParam(const arch_register_class_t *cls, const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_mode *mode, ir_node *frame_pointer, entity *ent);
+enum {
+ be_pos_Return_mem = 0, /**< memory input of a be_Return node */
+ be_pos_Return_sp = 1, /**< stack pointer input of a be_Return node */
+ be_pos_Return_val = 2, /**< first "real" return value if any */
+};
+
+/**
+ * Construct a new be_Return.
+ * @param irg the graph where the new node will be placed
+ * @param bl the block where the new node will be placed
+ * @param n_res number of "real" results
+ * @param n number of inputs
+ * @param pop pop number of bytes on return
+ * @param in input array
+ */
+ir_node *be_new_Return(dbg_info *dbg, ir_graph *irg, ir_node *bl, int n_res, unsigned pop, int n, ir_node *in[]);
+
+/** Returns the number of real returns values */
+int be_Return_get_n_rets(const ir_node *ret);
+
+unsigned be_Return_get_pop(const ir_node *ret);
+
+/** appends a node to the return node, returns the position of the node */
+int be_Return_append_node(ir_node *ret, ir_node *node);
+
ir_node *be_new_RegParams(ir_graph *irg, ir_node *bl, int n_out);
ir_node *be_new_Barrier(ir_graph *irg, ir_node *bl, int n, ir_node *in[]);
-ir_node *be_spill(const arch_env_t *arch_env, ir_node *irn, ir_node *spill_ctx);
-ir_node *be_reload(const arch_env_t *arch_env, const arch_register_class_t *cls, ir_node *reloader, ir_mode *mode, ir_node *spill);
+/**
+ * Appends a node to a barrier, returns the result proj of the node
+ */
+ir_node *be_Barrier_append_node(ir_node *barrier, ir_node *node);
+
+/**
+ * Appends a register out requirement to a RegParams node
+ *
+ * @returns the proj node for the new register
+ */
+ir_node *be_RegParams_append_out_reg(ir_node *regparams,
+ const arch_env_t *arch_env,
+ const arch_register_t *reg);
+
+/**
+ * Make a spill node.
+ *
+ * @param arch_env The architecture environment.
+ * @param irn The node to be spilled.
+ * @param spill_ctx The context in which the spill is introduced (This is mostly == irn up to the case of Phis).
+ * @return The new spill node.
+ */
+ir_node *be_spill(const arch_env_t *arch_env, ir_node *irn);
+
+/**
+ * Make a reload and insert it into the schedule.
+ *
+ * @param arch_env The architecture environment.
+ * @param cls The register class of the reloaded value.
+ * @param insert The node in the schedule in front of which the reload is inserted.
+ * @param mode The mode of the original (spilled) value.
+ * @param spill The spill node corresponding to this reload.
+ * @return A freshly made reload.
+ */
+ir_node *be_reload(const arch_env_t *arch_env, const arch_register_class_t *cls, ir_node *insert, ir_mode *mode, ir_node *spill);
+enum {
+ be_pos_CopyKeep_op = 0
+};
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 *be_new_CopyKeep_single(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *src, ir_node *keep, ir_mode *mode);
-
+ir_node *be_get_CopyKeep_op(const ir_node *cpy);
+void be_set_CopyKeep_op(ir_node *cpy, ir_node *op);
/**
* Get the backend opcode of a backend node.
int be_is_Reload(const ir_node *irn);
int be_is_Copy(const ir_node *irn);
int be_is_Perm(const ir_node *irn);
+int be_is_MemPerm(const ir_node *irn);
int be_is_Keep(const ir_node *irn);
int be_is_CopyKeep(const ir_node *irn);
int be_is_Call(const ir_node *irn);
int be_is_Return(const ir_node *irn);
int be_is_IncSP(const ir_node *irn);
-int be_is_SetSP(const ir_node *irn);
int be_is_AddSP(const ir_node *irn);
+int be_is_SubSP(const ir_node *irn);
int be_is_RegParams(const ir_node *irn);
-int be_is_StackParam(const ir_node *irn);
int be_is_FrameAddr(const ir_node *irn);
-int be_is_FrameLoad(const ir_node *irn);
-int be_is_FrameStore(const ir_node *irn);
int be_is_Barrier(const ir_node *irn);
/**
- * Get the entity on the stack frame the given node uses.
- * @param irn The node.
- * @return The entity on the stack frame used by the node or NULL,
- * if the node does not access the stack frame or is no back-end node.
+ * Try to avoid this function and better call arch_get_frame_entity!
*
+ * Returns the frame entity used by the be node
*/
-entity *be_get_frame_entity(const ir_node *irn);
-
-void be_set_Spill_entity(ir_node *irn, entity *ent);
-entity *be_get_spill_entity(const ir_node *irn);
-
-ir_node *be_get_Spill_context(const ir_node *irn);
+ir_entity *be_get_frame_entity(const ir_node *irn);
/**
- * Set the entities of a Reload to the ones of the Spill it is pointing to.
- * @param irg The graph.
+ * Returns the frame offset of this node.
*/
-void be_copy_entities_to_reloads(ir_graph *irg);
+int be_get_frame_offset(const ir_node *irn);
+
+ir_node* be_get_Reload_mem(const ir_node *irn);
+ir_node *be_get_Reload_frame(const ir_node *irn);
+ir_node* be_get_Spill_val(const ir_node *irn);
+ir_node *be_get_Spill_frame(const ir_node *irn);
+
+void be_set_MemPerm_in_entity(const ir_node *irn, int n, ir_entity* ent);
+ir_entity *be_get_MemPerm_in_entity(const ir_node *irn, int n);
+
+void be_set_MemPerm_out_entity(const ir_node *irn, int n, ir_entity* ent);
+ir_entity *be_get_MemPerm_out_entity(const ir_node *irn, int n);
+
+int be_get_MemPerm_entity_arity(const ir_node *irn);
/**
* Impose a register constraint on a backend node.
*/
void be_node_set_flags(ir_node *irn, int pos, arch_irn_flags_t flags);
+void be_node_add_flags(ir_node *irn, int pos, arch_irn_flags_t flags);
+
/**
* Set the register class of a node.
* @param irn The node itself.
*/
void be_node_set_reg_class(ir_node *irn, int pos, const arch_register_class_t *cls);
+/**
+ * Set the register requirement type of a node.
+ * @param irn The node itself.
+ * @param pos The position (0..n) for arguments, (-1..-m) for results.
+ * @param flags The register requirement type to set for that node and position.
+ */
+void be_node_set_req_type(ir_node *irn, int pos, arch_register_req_type_t type);
+
/**
* Make a new phi handler.
* @param env The architecture environment.
*/
void be_phi_handler_reset(arch_irn_handler_t *handler);
+/**
+ * Set the register requirements for a phi node.
+ */
+void be_set_phi_reg_req(const arch_env_t *arch_env, ir_node *phi,
+ const arch_register_req_t *req);
+
+/*
+ * Set flags for a phi node
+ */
+void be_set_phi_flags(const arch_env_t *arch_env, ir_node *phi,
+ arch_irn_flags_t flags);
+
/**
* irn handler for common be nodes.
*/
extern const arch_irn_handler_t be_node_irn_handler;
-#endif /* _BENODE_T_H */
+#endif /* FIRM_BE_BENODE_T_H */
projects / libfirm / blobdiff