-
#ifndef _FIRM_BEARCH_H
#define _FIRM_BEARCH_H
-#include "firm_config.h"
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
-#include "irop_t.h"
-#include "irnode_t.h"
-#include "irmode_t.h"
+#ifdef WITH_LIBCORE
+#include <libcore/lc_opts.h>
+#endif
+#include "irnode.h"
+#include "irmode.h"
+
+#include "bitset.h"
#include "hashptr.h"
#include "fourcc.h"
#include "set.h"
#include "list.h"
#include "ident.h"
-#include "bearch.h"
+#include "belistsched.h"
-#define ARCH_OBJ(name,x) typedef struct _arch_ ## name ## _t arch_ ## name ## _t;
-#include "bearch_obj.def"
-#undef ARCH_OBJ
+typedef struct _arch_register_class_t arch_register_class_t;
+typedef struct _arch_register_t arch_register_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_irn_handler_t arch_irn_handler_t;
+typedef struct _arch_code_generator_t arch_code_generator_t;
+typedef struct _arch_code_generator_if_t arch_code_generator_if_t;
-struct _bitset_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_none = 0,
+ 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;
+/**
+ * Convenience macro to check for register type.
+ * @param req A pointer to register.
+ * @param kind The kind of type to check for (see arch_register_type_t).
+ * @return 1, If register is of given kind, 0 if not.
+ */
+#define arch_register_type_is(reg, kind) \
+ ((reg)->type == arch_register_type_ ## kind)
+
/**
* A register.
*/
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. */
+ 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 *
#define arch_register_get_class(reg) _arch_register_get_class(reg)
#define arch_register_get_index(reg) _arch_register_get_index(reg)
-
-/**
- * A (sub-) set of registers.
- */
-struct _arch_register_set_t {
- const struct _arch_register_class_t *reg_class; /**< The register class for this set. */
- int *regs; /**< An array containing 0/1 at place i
- whether the register with index i is
- in the set or not. */
-};
-
-static INLINE int _arch_register_in_set(const arch_register_set_t *set,
- const arch_register_t *reg)
-{
- if(reg->reg_class != set->reg_class)
- return 0;
-
- return set->regs[reg->index];
-}
-
+#define arch_register_get_name(reg) ((reg)->name)
/**
* A class of registers.
* Like general purpose or floating point.
*/
struct _arch_register_class_t {
- const char *name; /**< The name of the register. */
- arch_register_set_t *set; /**< A register set containing all registers
- in this class. */
- int n_regs; /**< Number of registers in this class. */
- const arch_register_t *regs; /**< The array of registers. */
+ 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. */
};
#define arch_register_class_n_regs(cls) ((cls)->n_regs)
+/**
+ * Put all registers in a class into a bitset.
+ * @param cls The class.
+ * @param bs The bitset. May be NULL.
+ * @return The number of registers in the class.
+ */
+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];
+ assert(0 <= idx && idx < cls->n_regs);
+ return &cls->regs[idx];
}
#define arch_register_for_index(cls, idx) \
_arch_register_for_index(cls, idx)
+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;
+
/**
- * Get the register set for a register class.
- * @param cls The register class.
- * @return The set containing all registers in the class.
+ * Different types of register allocation requirements.
*/
-#define arch_get_register_set_for_class(cls) ((cls)->set)
+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
+ another one at the node. */
+
+ arch_register_req_type_should_be_different = 8, /**< The register must be unequal
+ to some other at the node. */
+
+} arch_register_req_type_t;
/**
- * An immediate.
+ * Convenience macro to check for set constraints.
+ * @param req A pointer to register requirements.
+ * @param kind The kind of constraint to check for (see arch_register_req_type_t).
+ * @return 1, If the kind of constraint is present, 0 if not.
*/
-struct _arch_immediate_t {
- const char *name; /**< The name of the immediate. */
- ir_mode *mode; /**< The mode of the immediate. */
-};
+#define arch_register_req_is(req, kind) \
+ (((req)->type & (arch_register_req_type_ ## kind)) != 0)
+
+/**
+ * Expresses requirements to register allocation for an operand.
+ */
+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. */
+
+ void (*limited)(void *limited_env, 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. */
+
+ void *limited_env; /**< This is passed to limited. */
+
+ ir_node *other; /**< In case of "should be equal"
+ or should be different, this gives
+ the node to whose register this
+ one's should be the same/different. */
+} arch_register_req_t;
/**
- * The member of an enum.
+ * Certain node classes which are relevant for the register allocator.
*/
-struct _arch_enum_member_t {
- arch_enum_t *enm; /**< The enum, this member belongs to. */
+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,
+ arch_irn_class_call
+} arch_irn_class_t;
+
+/**
+ * Some flags describing a node in more detail.
+ */
+typedef enum _arch_irn_flags_t {
+ arch_irn_flags_dont_spill = 1, /**< This must not be spilled. */
+ arch_irn_flags_rematerializable = 2, /**< This should be replicated instead of spilled/reloaded. */
+ arch_irn_flags_ignore = 4, /**< Do not consider the node during register allocation. */
+} arch_irn_flags_t;
+
+struct _arch_irn_ops_if_t {
+
+ /**
+ * Get the register requirements for a given operand.
+ * @param self The self pointer.
+ * @param irn The node.
+ * @param pos The operand's position
+ * (-1 for the result of the node, 0..n for the input
+ * operands).
+ * @return The register requirements for the selected operand.
+ * The pointer returned is never NULL.
+ */
+ const arch_register_req_t *(*get_irn_reg_req)(const void *self,
+ arch_register_req_t *req, const ir_node *irn, int pos);
+
+ /**
+ * Set the register for an output operand.
+ * @param irn The node.
+ * @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 void *self, ir_node *irn, const arch_register_t *reg);
+
+ /**
+ * Get the register allocated for an output operand.
+ * @param irn The node.
+ * @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 void *self, const ir_node *irn);
+
+ /**
+ * Classify the node.
+ * @param irn The node.
+ * @return A classification.
+ */
+ arch_irn_class_t (*classify)(const void *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 void *self, const ir_node *irn);
+
};
/**
- * 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.
+ * irn_ops base class.
*/
-struct _arch_enum_t {
- int n_members; /**< The number of members in this enum. */
- arch_enum_member_t *members[1]; /**< The array of members. */
+struct _arch_irn_ops_t {
+ const arch_irn_ops_if_t *impl;
};
-typedef enum _arch_operand_type_t {
-#define ARCH_OPERAND_TYPE(name,size_in_irn) arch_operand_type_ ## name,
-#include "bearch_operand_types.def"
-#undef ARCH_OPERAND_TYPE
- arch_operand_type_last
-} arch_operand_type_t;
+/**
+ * Get the register requirements for a node.
+ * @param env The architecture environment.
+ * @param req A pointer to a requirements structure, where the data can
+ * be put into.
+ * @param irn The node.
+ * @param pos The position of the operand you're interested in.
+ * @return A pointer to the register requirements which may <b>not</b>
+ * neccessarily be equal to @p req. If NULL is returned, the
+ * 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);
+/**
+ * Check if an operand is a register operand.
+ * @param env The environment.
+ * @param irn The node.
+ * @param pos The position of the operand.
+ * @return 1, if the operand is significant for register allocation, 0
+ * if not.
+ */
+extern int arch_is_register_operand(const arch_env_t *env,
+ const ir_node *irn, int pos);
+
+/**
+ * Get the number of allocatable registers concerning
+ * a register class for an operand of a node.
+ * @param env The environment.
+ * @param irn The node.
+ * @param pos The postition of the node's operand.
+ * @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, bitset_t *bs);
+
+/**
+ * Check, if a register is assignable to an operand of a node.
+ * @param env The architecture environment.
+ * @param irn The node.
+ * @param pos The position of the operand.
+ * @param reg The register.
+ * @return 1, if the register might be allocated to the operand 0 if not.
+ */
+extern int arch_reg_is_allocatable(const arch_env_t *env,
+ const ir_node *irn, int pos, const arch_register_t *reg);
+
+/**
+ * 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.
+ * @return The register class of the operand or NULL, if
+ * operand is a non-register operand.
+ */
+extern const arch_register_class_t *
+arch_get_irn_reg_class(const arch_env_t *env, const ir_node *irn, int pos);
+/**
+ * Get the register allocated at a certain output operand of a node.
+ * @param env The arch environment.
+ * @param irn The node.
+ * @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);
/**
- * The data for the different flavours of operand types.
+ * Set the register for a certain output operand.
+ * @param env The architecture environment.
+ * @param irn The node.
+ * @param idx The index of the output operand.
+ * @param reg The register.
*/
-typedef union _arch_operand_data_t {
- const arch_register_set_t *set; /**< The set of valid registers is directly
- given. Note, that if an insn has no constraints,
- the set comprises all registers in the
- register class. */
+extern void arch_set_irn_register(const arch_env_t *env, ir_node *irn,
+ const arch_register_t *reg);
- const arch_immediate_t *imm; /**< If the operand is an immediate
- operand, this describes the kind of
- immediate. */
+/**
+ * Classify a node.
+ * @param env The architecture environment.
+ * @param irn The node.
+ * @return A classification of the node.
+ */
+extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn);
- const arch_enum_t *enm; /**< Some enumeration value. */
+/**
+ * Get the flags of a node.
+ * @param env The architecture environment.
+ * @param irn The node.
+ * @return The flags.
+ */
+extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn);
- int same_as_pos; /**< 'Same as' position for equals. */
-} arch_operand_data_t;
+#define arch_irn_is_ignore(env, irn) 0
+ // ((arch_irn_get_flags(env, irn) & arch_irn_flags_ignore) != 0)
+
+#define arch_irn_has_reg_class(env, irn, pos, cls) \
+ ((cls) == arch_get_irn_reg_class(env, irn, pos))
+
+#define arch_irn_consider_in_reg_alloc(env, cls, irn) \
+ (arch_irn_has_reg_class(env, irn, -1, cls) && !arch_irn_is_ignore(env, irn))
/**
- * An operand to an instruction.
+ * Somebody who can be asked about nodes.
*/
-struct _arch_operand_t {
- arch_operand_type_t type; /**< The type of the operand. */
- arch_operand_data_t data; /**< The payload. */
+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 void *(*get_irn_ops)(const arch_irn_handler_t *handler,
+ const ir_node *irn);
+
};
/**
- * An instruction format.
+ * The code generator.
*/
-struct _arch_insn_format_t {
- int n_in; /**< Number of in operands. */
- int n_out; /**< Number of out operands. */
+struct _arch_code_generator_if_t {
+
+
+ /**
+ * Initialize the code generator.
+ * @param file The file to dump to.
+ * @param irg The function to generate code for.
+ * @param env The architecture environment.
+ * @return A newly created code generator.
+ */
+ void *(*init)(FILE *file, ir_graph *irg, const arch_env_t *env);
+
+ /**
+ * Called, when the graph is being normalized.
+ */
+ void (*prepare_graph)(void *self);
+
+ /**
+ * Called before scheduling.
+ */
+ void (*before_sched)(void *self);
+
+ /**
+ * Called before register allocation.
+ */
+ void (*before_ra)(void *self);
+
+ /**
+ * Called after register allocation to lower Spills to Stores
+ */
+ ir_node *(*lower_spill)(void *self, ir_node *spill);
+
+ /**
+ * Called after register allocation to lower Reloads to Loads
+ */
+ ir_node *(*lower_reload)(void *self, ir_node *reload);
+
+ /**
+ * Called after everything happened.
+ * The code generator must also be de-allocated here.
+ */
+ void (*done)(void *self);
- arch_operand_t * const *in_operands; /**< In operands. */
- arch_operand_t * const *out_operands; /**< Out operands. */
};
+#define _arch_cg_call(cg, func) \
+do { \
+ if((cg)->impl->func) \
+ (cg)->impl->func(cg); \
+} while(0)
+
+#define arch_code_generator_prepare_graph(cg) _arch_cg_call(cg, prepare_graph)
+#define arch_code_generator_before_sched(cg) _arch_cg_call(cg, before_sched)
+#define arch_code_generator_before_ra(cg) _arch_cg_call(cg, before_ra)
+#define arch_code_generator_done(cg) _arch_cg_call(cg, done)
+
/**
- * An instruction.
+ * Code generator base class.
*/
-struct _arch_insn_t {
- const arch_insn_format_t *format; /**< The format of the instruction. */
- ir_op *op; /**< The firm opcode for this insn. */
+struct _arch_code_generator_t {
+ const arch_code_generator_if_t *impl;
};
-#define arch_insn_is_allocatable(insn,reg) \
- ((irn)->get_allocatable_regs(irn, cls, NULL) != 0)
+/**
+ * ISA base class.
+ */
+struct _arch_isa_t {
+ const arch_isa_if_t *impl;
+};
/**
* Architecture interface.
*/
struct _arch_isa_if_t {
+#ifdef WITH_LIBCORE
+ void (*register_options)(lc_opt_entry_t *grp);
+#endif
+
/**
* Initialize the isa interface.
*/
- void (*init)(void);
+ void *(*init)(void);
+
+ /**
+ * Free the isa instance.
+ */
+ void (*done)(void *self);
/**
* Get the the number of register classes in the isa.
* @return The number of register classes.
*/
- int (*get_n_reg_class)(void);
+ int (*get_n_reg_class)(const void *self);
/**
* 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);
+ const arch_register_class_t *(*get_reg_class)(const void *self, int i);
/**
- * Put all registers of a given class which are allocatable to a
- * certain node into a bitset.
- * The bitset contains the indices of the registers concerning
- * the register class @p cls.
- * @param irn The node.
- * @param cls The register class.
- * @param bs The bitset. Can be NULL.
- * @return The number of registers which are allocatable at this node.
+ * The irn handler for this architecture.
+ * The irn handler is registered by the Firm back end
+ * when the architecture is initialized.
+ * (May be NULL).
*/
- int (*get_allocatable_regs)(const ir_node *irn,
- const arch_register_class_t *cls, struct _bitset_t *bs);
+ const arch_irn_handler_t *(*get_irn_handler)(const void *self);
/**
- * Get the register class, the value of a node belongs to.
- * @param irn The node.
- * @return The register class of the registers which can hold the
- * value of irn. If the node does not return a value, or possesses no
- * suitable register class, NULL is returned.
+ * Get the code generator interface.
+ * @param self The this pointer.
+ * @return Some code generator interface.
*/
- const arch_register_class_t *(*get_irn_reg_class)(const ir_node *irn);
-
+ const arch_code_generator_if_t *(*get_code_generator_if)(void *self);
+ /**
+ * Get the list scheduler to use.
+ * @param self The isa object.
+ * @return The list scheduler selector.
+ */
+ const list_sched_selector_t *(*get_list_sched_selector)(const void *self);
/**
- * Get an op for a name.
- * @note This method may not be implemented.
- * @param name The name of the op.
- * @return The op with that name.
+ * Get the proj number assigned to the register.
+ * @param self The isa object.
+ * @param reg The register
+ * @return The proj number assigned to this register
*/
- ir_op *(*get_op_by_name)(const char *name);
+ long (*get_projnum_for_register)(const void *self, const arch_register_t *reg);
};
+#define arch_isa_get_n_reg_class(isa) ((isa)->impl->get_n_reg_class(isa))
+#define arch_isa_get_reg_class(isa,i) ((isa)->impl->get_reg_class(isa, i))
+#define arch_isa_get_irn_handler(isa) ((isa)->impl->get_irn_handler(isa))
+#define arch_isa_make_code_generator(isa,irg) ((isa)->impl->make_code_generator(isa, irg))
+
+#define ARCH_MAX_HANDLERS 8
+
/**
- * Check, if the value of a node can be stored in a
- * specific register class.
- * @param isa The isa.
- * @param irn The node.
- * @param cls The register class.
- * @return 1, if the value can be stored in the register class, 0 if
- * not.
+ * Environment for the architecture infrastructure.
+ * Keep this everywhere you're going.
*/
-#define arch_isa_irn_has_reg_class(isa, irn, cls) \
- ((isa)->get_irn_reg_class(irn) == (cls))
+struct _arch_env_t {
+ const struct _be_node_factory_t *node_factory; /**< The node factory for be nodes. */
+ arch_isa_t *isa; /**< The isa about which everything is. */
+
+ arch_irn_handler_t const *handlers[ARCH_MAX_HANDLERS]; /**< The handlers are organized as
+ a stack. */
+
+ int handlers_tos; /**< The stack pointer of the handler
+ stack. */
+};
/**
- * Check, if a register is allocatable for an irn.
- * @param irn The node.
- * @param reg The register.
- * @return 1, if the register can be allocated to this node, 0 if not.
+ * Get the isa of an arch environment.
+ * @param env The environment.
+ * @return The isa with which the env was initialized with.
+ */
+#define arch_env_get_isa(env) ((env)->isa)
+
+/**
+ * Initialize the architecture environment struct.
+ * @param isa The isa which shall be put into the environment.
+ * @return The environment.
+ */
+extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa);
+
+/**
+ * Add a node handler to the environment.
+ * @param env The environment.
+ * @param handler A node handler.
+ * @return The environment itself.
*/
-#define arch_isa_reg_is_allocatable(irn, reg) \
- ((isa)->get_allocatable_regs(irn, (reg)->reg_class, NULL) != 0)
+extern arch_env_t *arch_env_add_irn_handler(arch_env_t *env,
+ const arch_irn_handler_t *handler);
#endif /* _FIRM_BEARCH_H */
projects / libfirm / blobdiff