-#ifndef _FIRM_BEARCH_H
-#define _FIRM_BEARCH_H
-
-#include "firm_config.h"
-
-#include "irnode.h"
-#include "irmode.h"
-
-#include "bitset.h"
-#include "hashptr.h"
-#include "fourcc.h"
-#include "set.h"
-#include "list.h"
-#include "ident.h"
-
-typedef struct _arch_register_class_t arch_register_class_t;
-typedef struct _arch_register_t arch_register_t;
-typedef struct _arch_enum_t arch_enum_t;
-typedef struct _arch_enum_member_t arch_enum_member_t;
-typedef struct _arch_isa_if_t arch_isa_if_t;
-typedef struct _arch_env_t arch_env_t;
-typedef struct _arch_irn_ops_t arch_irn_ops_t;
-typedef struct _arch_irn_handler_t arch_irn_handler_t;
-
-struct _be_node_factory_t;
-
-typedef enum _arch_register_type_t {
- arch_register_type_none = 0,
- arch_register_type_write_invariant,
- arch_register_type_caller_saved, /**< The register must be saved by the caller
- upon a function call. It thus can be overwritten
- in the called function. */
- arch_register_type_callee_saved, /**< The register must be saved by the called function,
- it thus survives a function call. */
- arch_register_type_ignore /**< Do not consider this register when allocating. */
-} arch_register_type_t;
-
-/**
- * A register.
+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * 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.
+ *
+ * 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.
*/
-struct _arch_register_t {
- const char *name; /**< The name of the register. */
- const arch_register_class_t *reg_class; /**< The class the register belongs to. */
- int index; /**< The index of the register in the class. */
- arch_register_type_t type; /**< The type of the register. */
- void *data; /**< Custom data. */
-};
-
-static INLINE const arch_register_class_t *
-_arch_register_get_class(const arch_register_t *reg)
-{
- return reg->reg_class;
-}
-
-static INLINE int _arch_register_get_index(const arch_register_t *reg)
-{
- return reg->index;
-}
-
-#define arch_register_get_class(reg) _arch_register_get_class(reg)
-#define arch_register_get_index(reg) _arch_register_get_index(reg)
-#define arch_register_get_name(reg) ((reg)->name)
/**
- * A class of registers.
- * Like general purpose or floating point.
+ * @file
+ * @brief Processor architecture specification.
+ * @author Sebastian Hack
+ * @version $Id$
*/
-struct _arch_register_class_t {
- const char *name; /**< The name of the register class. */
- int n_regs; /**< Number of registers in this class. */
- const arch_register_t *regs; /**< The array of registers. */
-};
+#ifndef FIRM_BE_BEARCH_H
+#define FIRM_BE_BEARCH_H
-#define arch_register_class_n_regs(cls) ((cls)->n_regs)
+#include "firm_types.h"
+#include "bitset.h"
+#include "be.h"
+#include "obst.h"
+
+typedef struct arch_register_class_t arch_register_class_t;
+typedef struct arch_register_req_t arch_register_req_t;
+typedef struct arch_register_t arch_register_t;
+typedef struct arch_flag_t arch_flag_t;
+typedef struct arch_inverse_t arch_inverse_t;
+typedef struct arch_isa_if_t arch_isa_if_t;
+typedef struct arch_isa_t arch_isa_t;
+typedef struct arch_env_t arch_env_t;
+typedef struct arch_irn_ops_if_t arch_irn_ops_if_t;
+typedef struct arch_irn_ops_t arch_irn_ops_t;
+typedef struct arch_code_generator_t arch_code_generator_t;
+typedef struct arch_code_generator_if_t arch_code_generator_if_t;
+
+typedef enum arch_register_class_flags_t {
+ arch_register_class_flag_none = 0,
+ arch_register_class_flag_manual_ra = 1, /**< don't do automatic register allocation for this class */
+ arch_register_class_flag_state = 2
+} arch_register_class_flags_t;
+
+typedef enum arch_register_type_t {
+ arch_register_type_none = 0,
+ arch_register_type_caller_save = 1, /**< The register must be saved by the caller
+ upon a function call. It thus can be overwritten
+ in the called function. */
+ arch_register_type_callee_save = 2, /**< The register must be saved by the caller
+ upon a function call. It thus can be overwritten
+ in the called function. */
+ arch_register_type_ignore = 4, /**< Do not consider this register when allocating. */
+ arch_register_type_joker = 8, /**< The emitter can choose an arbitrary register */
+ arch_register_type_virtual = 16, /**< This is just a virtual register.Virtual registers have
+ nearly no constraints, it is a allowed to have multiple
+ definition for the same register at a point) */
+ arch_register_type_state = 32, /**< The register represents a state that should be handled by
+ bestate code */
+} arch_register_type_t;
/**
* Put all registers in a class into a bitset.
*/
extern int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs);
-static INLINE const arch_register_t *
-_arch_register_for_index(const arch_register_class_t *cls, int idx)
-{
- assert(0 <= idx && idx < cls->n_regs);
- return &cls->regs[idx];
-}
-
-#define arch_register_for_index(cls, idx) \
- _arch_register_for_index(cls, idx)
-
-/**
- * Get the register set for a register class.
- * @param cls The register class.
- * @return The set containing all registers in the class.
- */
-#define arch_get_register_set_for_class(cls) ((cls)->set)
-
-/**
- * An immediate.
- */
-struct _arch_immediate_t {
- const char *name; /**< The name of the immediate. */
- ir_mode *mode; /**< The mode of the immediate. */
-};
-
-/**
- * The member of an enum.
- */
-struct _arch_enum_member_t {
- arch_enum_t *enm; /**< The enum, this member belongs to. */
-};
-
-/**
- * An enumeration operand type.
- *
- * Enumeration operand types can be used to describe the variants
- * of an instruction, like giving the cases for a compare (gt, lt,
- * eq, ...) some other special attributes of an instruction.
- */
-struct _arch_enum_t {
- int n_members; /**< The number of members in this enum. */
- arch_enum_member_t *members[1]; /**< The array of members. */
-};
-
-typedef enum _arch_operand_type_t {
- arch_operand_type_invalid,
- arch_operand_type_memory,
- arch_operand_type_register,
- arch_operand_type_immediate,
- arch_operand_type_symconst,
- arch_operand_type_last
+typedef enum arch_operand_type_t {
+ arch_operand_type_invalid,
+ arch_operand_type_memory,
+ arch_operand_type_register,
+ arch_operand_type_immediate,
+ arch_operand_type_symconst,
+ arch_operand_type_last
} arch_operand_type_t;
/**
* Different types of register allocation requirements.
*/
-typedef enum _arch_register_req_type_t {
- arch_register_req_type_none = 0, /**< No register requirement. */
-
- arch_register_req_type_normal = 1, /**< All registers in the class
- are allowed. */
-
- arch_register_req_type_limited = 2, /**< Only a real subset of
- the class is allowed. */
-
- arch_register_req_type_equal = 4, /**< The register must equal
- another one at the node. */
-
- arch_register_req_type_unequal = 8, /**< The register must be unequal
- to some other at the node. */
-
- arch_register_req_type_pair = 16 /**< The register is part of a
- register pair. */
+typedef enum arch_register_req_type_t {
+ arch_register_req_type_none = 0, /**< No register requirement. */
+ arch_register_req_type_normal = 1, /**< All registers in the class are allowed. */
+ arch_register_req_type_limited = 2, /**< Only a real subset of the class is allowed. */
+ arch_register_req_type_should_be_same = 4, /**< The register should be equal to another one at the node. */
+ arch_register_req_type_should_be_different = 8, /**< The register must be unequal from some other at the node. */
} arch_register_req_type_t;
-#define arch_register_req_is_constr(x) \
- ((x)->type & (arch_register_req_type_pair + arch_register_req_type_limited - 1) != 0)
+extern const arch_register_req_t *arch_no_register_req;
/**
- * Expresses requirements to register allocation for an operand.
+ * Format a register requirements information into a string.
+ * @param buf The string where to put it to.
+ * @param len The size of @p buf.
+ * @param req The requirements structure to format.
+ * @return A pointer to buf.
*/
-typedef struct _arch_register_req_t {
- arch_register_req_type_t type; /**< The type of the constraint. */
- const arch_register_class_t *cls; /**< The register class this
- constraint belongs to. */
- union {
- int (*limited)(const ir_node *irn, int pos, bitset_t *bs);
- /**< In case of the 'limited'
- constraint, this function
- must put all allowable
- registers in the bitset and
- return the number of registers
- in the bitset. */
-
- int pos; /**< In case of the equal constraint,
- this gives the position of the
- operand to which the register of
- this should be equal to. Same for
- unequal. */
- } data;
-} arch_register_req_t;
+extern char *arch_register_req_format(char *buf, size_t len, const arch_register_req_t *req, const ir_node *node);
/**
- * Certain node classes which are relevent for the register allocator.
- */
-typedef enum _arch_irn_class_t {
- arch_irn_class_normal,
- arch_irn_class_spill,
- arch_irn_class_reload,
- arch_irn_class_copy,
- arch_irn_class_perm,
- arch_irn_class_branch
+ * Certain node classes which are relevant for the register allocator.
+ */
+typedef enum arch_irn_class_t {
+ arch_irn_class_normal = 1 << 0,
+ arch_irn_class_spill = 1 << 1,
+ arch_irn_class_reload = 1 << 2,
+ arch_irn_class_copy = 1 << 3,
+ arch_irn_class_perm = 1 << 4,
+ arch_irn_class_branch = 1 << 5,
+ arch_irn_class_call = 1 << 6,
+ arch_irn_class_load = 1 << 7,
+ arch_irn_class_store = 1 << 8,
+ arch_irn_class_stackparam = 1 << 9,
} arch_irn_class_t;
/**
* Some flags describing a node in more detail.
*/
-typedef enum _arch_irn_flags_t {
- arch_irn_flags_spillable = 1,
- arch_irn_flags_rematerializable = 2
+typedef enum arch_irn_flags_t {
+ arch_irn_flags_none = 0, /**< Node flags. */
+ arch_irn_flags_dont_spill = 1, /**< This must not be spilled. */
+ arch_irn_flags_rematerializable = 2, /**< This can be replicated instead of spilled/reloaded. */
+ arch_irn_flags_ignore = 4, /**< Ignore node during register allocation. */
+ arch_irn_flags_modify_sp = 8, /**< I modify the stack pointer. */
+ arch_irn_flags_modify_flags = 16, /**< I modify flags. */
+ arch_irn_flags_last = arch_irn_flags_modify_flags
} arch_irn_flags_t;
-/*
- * Some words about positions and indices:
- *
- * Firm has the policy "One node per value", that's why there are
- * Proj nodes. This view has its advantages, but in a backend
- * setting where we talk about instructions (which can also have
- * multiple results and not a single Tuple value) this is sometimes
- * hard.
- *
- * Each node representing an instruction must provide information
- * about the kind of its operands (where operands mean both input
- * and output operands). Such an operand is addressed with a position
- * which is infact a tuple {in, out} x N. The fact that a position
- * is an input/output operand is encoded in the sign, so input operands
- * go from 0..n-1 and output operands from -1..-m if the
- * instruction has n input and m output operands.
- */
-
-#define _BEARCH_TRANSFORM_INDEX(cmp, index) ((index) cmp 0 ? -((index) + 1) : (index))
-
/**
- * Make an in position from an index.
- * @param index The index.
- * @return The position representing the index as an in operand.
+ * Get the string representation of a flag.
+ * This functions does not handle or'ed bitmasks of flags.
+ * @param flag The flag.
+ * @return The flag as a string.
*/
-#define arch_pos_make_in(index) _BEARCH_TRANSFORM_INDEX(<, index)
+extern const char *arch_irn_flag_str(arch_irn_flags_t flag);
-/**
- * Make an out position from an index.
- * @param index The index.
- * @return The position representing the index as an out operand.
- */
-#define arch_pos_make_out(index) _BEARCH_TRANSFORM_INDEX(>=, index)
+extern const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env,
+ const ir_node *irn);
-/**
- * Check, if a position denotes an input operand.
- * @param pos The position.
- * @return 1, if the position denotes an input operand 0 if not.
- */
-#define arch_pos_is_in(pos) ((pos) >= 0)
+extern void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int bias);
-/**
- * Check, if a position denotes an output operand.
- * @param pos The position.
- * @return 1, if the position denotes an output operand 0 if not.
- */
-#define arch_pos_is_out(pos) (!arch_pos_is_in(pos))
+extern ir_entity *arch_get_frame_entity(const arch_env_t *env, const ir_node *irn);
+extern void arch_set_frame_entity(const arch_env_t *env, ir_node *irn, ir_entity *ent);
+extern int arch_get_sp_bias(const arch_env_t *env, ir_node *irn);
-/**
- * Get the index of a position.
- * @param pos The position.
- * @return The index of the position.
- */
-#define arch_pos_get_index(pos) _BEARCH_TRANSFORM_INDEX(<, pos)
-
-struct _arch_irn_ops_t {
-
- /**
- * Get the register requirements for a given operand.
- * @param self The self pointer.
- * @param irn The node.
- * @param pos The operand's position.
- * @return The register requirements for the selected operand.
- * The pointer returned is never NULL.
- */
- const arch_register_req_t *(*get_irn_reg_req)(const arch_irn_ops_t *self,
- arch_register_req_t *req,
- const ir_node *irn, int pos);
-
- /**
- * Get the number of operands of a node.
- * @param irn The node.
- * @param in_out Denotes wither input (a number >= 0) or
- * output (a number < 0).
- * @return The number of operands for either in, or output.
- */
- int (*get_n_operands)(const arch_irn_ops_t *self, const ir_node *irn, int in_out);
-
- /**
- * Set the register for an output operand.
- * @param irn The node.
- * @param pos The position of the output operand.
- * @param reg The register allocated to that operand.
- * @note If the operand is not a register operand,
- * the call is ignored.
- */
- void (*set_irn_reg)(const arch_irn_ops_t *self, ir_node *irn,
- int idx, const arch_register_t *reg);
-
- /**
- * Get the register allocated for an output operand.
- * @param irn The node.
- * @param pos The index of the output operand.
- * @return The register allocated at that operand. NULL, if
- * the operand was no register operand or
- * @c arch_register_invalid, if no register has yet been
- * allocated for this node.
- */
- const arch_register_t *(*get_irn_reg)(const arch_irn_ops_t *self,
- const ir_node *irn, int idx);
-
- /**
- * Classify the node.
- * @param irn The node.
- * @return A classification.
- */
- arch_irn_class_t (*classify)(const arch_irn_ops_t *self, const ir_node *irn);
-
- /**
- * Get the flags of a node.
- * @param self The irn ops themselves.
- * @param irn The node.
- * @return A set of flags.
- */
- arch_irn_flags_t (*get_flags)(const arch_irn_ops_t *self, const ir_node *irn);
-
-};
-
-extern int
-arch_get_n_operands(const arch_env_t *env, const ir_node *irm, int in_out);
+extern int arch_get_op_estimated_cost(const arch_env_t *env, const ir_node *irn);
+extern arch_inverse_t *arch_get_inverse(const arch_env_t *env, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack);
+extern int arch_possible_memory_operand(const arch_env_t *env, const ir_node *irn, unsigned int i);
+extern void arch_perform_memory_operand(const arch_env_t *env, ir_node *irn, ir_node *spill, unsigned int i);
/**
* Get the register requirements for a node.
* operand was no register operand.
*/
extern const arch_register_req_t *
-arch_get_register_req(const arch_env_t *env, arch_register_req_t *req,
- const ir_node *irn, int pos);
+arch_get_register_req(const arch_env_t *env, const ir_node *irn, int pos);
/**
* Check if an operand is a register operand.
* @param env The environment.
* @param irn The node.
* @param pos The postition of the node's operand.
- * @param cls The register class.
* @param bs The bitset all allocatable registers shall be put into.
* Note, that you can also pass NULL here. If you don't,
* make sure, the bitset is as large as the register class
* has registers.
* @return The amount of registers allocatable for that operand.
*/
-extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn,
- int pos, const arch_register_class_t *cls, bitset_t *bs);
+extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs);
+
+/**
+ * Put all registers which shall not be ignored by the register
+ * allocator in a bit set.
+ * @param env The arch env.
+ * @param cls The register class to consider.
+ * @param bs The bit set to put the registers to.
+ */
+extern void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls, bitset_t *bs);
/**
* Check, if a register is assignable to an operand of a node.
* Get the register class of an operand of a node.
* @param env The architecture environment.
* @param irn The node.
- * @param pos The position of the operand.
+ * @param pos The position of the operand, -1 for the output.
* @return The register class of the operand or NULL, if
* operand is a non-register operand.
*/
/**
* Get the register allocated at a certain output operand of a node.
- * @param env The arch nvironment.
+ * @param env The arch environment.
* @param irn The node.
- * @param idx The index of the output operand.
* @return The register allocated for this operand
*/
extern const arch_register_t *
-arch_get_irn_register(const arch_env_t *env, const ir_node *irn, int idx);
+arch_get_irn_register(const arch_env_t *env, const ir_node *irn);
/**
* Set the register for a certain output operand.
* @param idx The index of the output operand.
* @param reg The register.
*/
-extern void arch_set_irn_register(const arch_env_t *env,
- ir_node *irn, int idx, const arch_register_t *reg);
+extern void arch_set_irn_register(const arch_env_t *env, ir_node *irn,
+ const arch_register_t *reg);
/**
* Classify a node.
*/
extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn);
+#define arch_irn_class_is(env, irn, irn_class) ((arch_irn_classify(env, irn) & arch_irn_class_ ## irn_class) != 0)
+
/**
* Get the flags of a node.
* @param env The architecture environment.
*/
extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn);
-#define arch_irn_has_reg_class(env, irn, pos, cls) \
- ((cls) == arch_get_irn_reg_class(env, irn, pos))
-
-/**
- * Somebody who can be asked about nodes.
- */
-struct _arch_irn_handler_t {
-
- /**
- * Get the operations of an irn.
- * @param self The handler from which the method is invoked.
- * @param irn Some node.
- * @return Operations for that irn.
- */
- const arch_irn_ops_t *(*get_irn_ops)(const arch_irn_handler_t *handler,
- const ir_node *irn);
-
-};
-
-/**
- * Architecture interface.
- */
-struct _arch_isa_if_t {
-
- /**
- * Initialize the isa interface.
- */
- void (*init)(void);
-
- /**
- * Get the the number of register classes in the isa.
- * @return The number of register classes.
- */
- int (*get_n_reg_class)(void);
-
- /**
- * Get the i-th register class.
- * @param i The number of the register class.
- * @return The register class.
- */
- const arch_register_class_t *(*get_reg_class)(int i);
-
- /**
- * Prepare a graph.
- * This function is called each time, the backend starts running over
- * a graph.
- * @param irg The graph.
- */
- void (*prepare_graph)(ir_graph *irg);
-};
-
-#define ARCH_MAX_HANDLERS 8
-
-/**
- * Environment for the architecture infrastructure.
- * Keep this everywhere you're going.
- */
-struct _arch_env_t {
- const struct _be_node_factory_t *node_factory; /**< The node factory for be nodes. */
- const arch_isa_if_t *isa; /**< The isa about which everything is. */
+#define arch_irn_is(env, irn, flag) ((arch_irn_get_flags(env, irn) & arch_irn_flags_ ## flag) != 0)
- arch_irn_handler_t const *handlers[ARCH_MAX_HANDLERS]; /**< The handlers are organized as
- a stack. */
+#define arch_irn_has_reg_class(env, irn, pos, cls) \
+ ((cls) == arch_get_irn_reg_class(env, irn, pos))
- int handlers_tos; /**< The stack pointer of the handler
- stack. */
-};
+#define arch_irn_consider_in_reg_alloc(env, cls, irn) \
+ (arch_irn_has_reg_class(env, irn, -1, cls) && !arch_irn_is(env, irn, ignore))
/**
- * Get the isa of an arch environment.
- * @param env The environment.
- * @return The isa with which the env was initialized with.
+ * Get the operations of an irn.
+ * @param self The handler from which the method is invoked.
+ * @param irn Some node.
+ * @return Operations for that irn.
*/
-#define arch_env_get_isa(env) ((env)->isa)
+typedef const void *(arch_get_irn_ops_t)(const ir_node *irn);
/**
* Initialize the architecture environment struct.
- * @param isa The isa which shall be put into the environment.
+ * @param isa The isa which shall be put into the environment.
+ * @param file_handle The file handle
* @return The environment.
*/
-extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa);
+extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa,
+ FILE *file_handle, be_main_env_t *main_env);
/**
- * Add a node handler to the environment.
+ * Set the architectural node handler to the environment.
* @param env The environment.
- * @param handler A node handler.
+ * @param handler The node handler for the selected architecture.
* @return The environment itself.
*/
-extern arch_env_t *arch_env_add_irn_handler(arch_env_t *env,
- const arch_irn_handler_t *handler);
+extern void arch_env_set_irn_handler(arch_env_t *env, arch_get_irn_ops_t *handler);
+
+/**
+ * Register an instruction set architecture
+ */
+void be_register_isa_if(const char *name, const arch_isa_if_t *isa);
-#endif /* _FIRM_BEARCH_H */
+#endif /* FIRM_BE_BEARCH_H */
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