-#ifndef _FIRM_BEARCH_H
-#define _FIRM_BEARCH_H
-
-#include "firm_config.h"
-
-#ifdef WITH_LIBCORE
-#include <libcore/lc_opts.h>
-#endif
+/*
+ * 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.
+ */
+
+/**
+ * @file
+ * @brief Processor architecture specification.
+ * @author Sebastian Hack
+ * @version $Id$
+ */
+#ifndef FIRM_BE_BEARCH_H
+#define FIRM_BE_BEARCH_H
+
+#include <stdbool.h>
#include "firm_types.h"
-
#include "bitset.h"
-
-#include "belistsched.h"
-#include "beabi_t.h"
-#include "bearch_t.h"
-#include "be_t.h"
-
-struct _be_node_factory_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. */
+#include "obst.h"
+#include "raw_bitset.h"
+#include "irop_t.h"
+
+#include "be_types.h"
+#include "beinfo.h"
+#include "be.h"
+#include "beirg.h"
+
+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;
-/**
- * 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) != 0)
-
-/**
- * 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. */
- 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.
- */
-struct _arch_register_class_t {
- const char *name; /**< The name of the register class. */
- int n_regs; /**< Number of registers in this class. */
- ir_mode *mode; /**< The mode of the register class. */
- const arch_register_t *regs; /**< The array of registers. */
-};
-
-/** return the number of registers in this register class */
-#define arch_register_class_n_regs(cls) ((cls)->n_regs)
-
-/** return the largest mode of this register class */
-#define arch_register_class_mode(cls) ((cls)->mode)
-
-/**
- * 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];
-}
-
-#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;
-
/**
* 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_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_should_be_different_from_all = 16, /**< The register must be different from
- all in's at the node */
+typedef enum arch_register_req_type_t {
+ arch_register_req_type_none = 0, /**< No register requirement. */
+ arch_register_req_type_normal = 1U << 0, /**< All registers in the class are allowed. */
+ arch_register_req_type_limited = 1U << 1, /**< Only a real subset of the class is allowed. */
+ arch_register_req_type_should_be_same = 1U << 2, /**< The register should be equal to another one at the node. */
+ arch_register_req_type_must_be_different = 1U << 3, /**< The register must be unequal from some other at the node. */
+ arch_register_req_type_ignore = 1U << 4, /**< ignore while allocating registers */
+ arch_register_req_type_produces_sp = 1U << 5, /**< the output produces a new value for the stack pointer */
} arch_register_req_type_t;
-/**
- * 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.
- */
-#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 must passed to limited. */
-
- ir_node *other_same; /**< The other which shall have the same reg
- as this one. (for case should_be_same). */
-
- ir_node *other_different; /**< The other node from which this one's register
- must be different (case must_be_different). */
-} arch_register_req_t;
+extern const arch_register_req_t *arch_no_register_req;
/**
- * Format a register requirements information into a string.
- * @param buf The string where to put it to.
- * @param len The size of @p buf.
+ * Print information about a register requirement in human readable form
+ * @param F output stream/file
* @param req The requirements structure to format.
- * @return A pointer to buf.
*/
-extern char *arch_register_req_format(char *buf, size_t len, const arch_register_req_t *req);
+void arch_dump_register_req(FILE *F, const arch_register_req_t *req,
+ const ir_node *node);
+void arch_dump_register_reqs(FILE *F, const ir_node *node);
+void arch_dump_reqs_and_registers(FILE *F, const ir_node *node);
/**
- * Certain node classes which are relevant for the register allocator.
+ * Node classification. Mainly used for statistics.
*/
-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_const = 1 << 7,
- arch_irn_class_load = 1 << 8,
- arch_irn_class_store = 1 << 9,
- arch_irn_class_stackparam = 1 << 10,
+typedef enum arch_irn_class_t {
+ arch_irn_class_spill = 1 << 0,
+ arch_irn_class_reload = 1 << 1,
+ arch_irn_class_remat = 1 << 2,
+ arch_irn_class_copy = 1 << 3,
+ arch_irn_class_perm = 1 << 4
} arch_irn_class_t;
-/**
- * An inverse operation returned by the backend
- */
-typedef struct _arch_inverse_t {
- int n; /**< count of nodes returned in nodes array */
- int costs; /**< costs of this remat */
-
- /**< nodes for this inverse operation. shall be in
- * schedule order. last element is the target value
- */
- ir_node **nodes;
-} arch_inverse_t;
-
-/**
- * Some flags describing a node in more detail.
- */
-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_last = arch_irn_flags_modify_sp
-} arch_irn_flags_t;
-
-/**
- * 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.
- */
-extern const char *arch_irn_flag_str(arch_irn_flags_t flag);
-
-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);
-
- /**
- * Get the entity on the stack frame this node depends on.
- * @param self The this pointer.
- * @param irn The node in question.
- * @return The entity on the stack frame or NULL, if the node does not has a stack frame entity.
- */
- entity *(*get_frame_entity)(const void *self, const ir_node *irn);
-
- /**
- * Set the entity on the stack frame this node depends on.
- * @param self The this pointer.
- * @param irn The node in question.
- * @param ent The entity to set
- */
- void (*set_frame_entity)(const void *self, ir_node *irn, entity *ent);
-
- /**
- * Set the offset of a node carrying an entity on the stack frame.
- * @param self The this pointer.
- * @param irn The node.
- * @param offset The offset of the node's stack frame entity.
- */
- void (*set_frame_offset)(const void *self, ir_node *irn, int offset);
-
- /**
- * Returns the delta of the stackpointer for nodes that increment or
- * decrement the stackpointer with a constant value. (push, pop
- * nodes on most architectures).
- * A positive value stands for an expanding stack area, a negative value for
- * a shrinking one.
- *
- * @param self The this pointer
- * @param irn The node
- * @return 0 if the stackpointer is not modified with a constant
- * value, otherwise the increment/decrement value
- */
- int (*get_sp_bias)(const void *self, const ir_node *irn);
-
- /**
- * Returns an inverse operation which yields the i-th argument
- * of the given node as result.
- *
- * @param self The this pointer.
- * @param irn The original operation
- * @param i Index of the argument we want the inverse operation to yield
- * @param inverse struct to be filled with the resulting inverse op
- * @param obstack The obstack to use for allocation of the returned nodes array
- * @return The inverse operation or NULL if operation invertible
- */
- arch_inverse_t *(*get_inverse)(const void *self, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack);
-
- /**
- * Get the estimated cycle count for @p irn.
- *
- * @param self The this pointer.
- * @param irn The node.
- *
- * @return The estimated cycle count for this operation
- */
- int (*get_op_estimated_cost)(const void *self, const ir_node *irn);
-
- /**
- * Asks the backend whether operand @p i of @p irn can be loaded form memory internally
- *
- * @param self The this pointer.
- * @param irn The node.
- * @param i Index of the argument we would like to know whether @p irn can load it form memory internally
- *
- * @return nonzero if argument can be loaded or zero otherwise
- */
- int (*possible_memory_operand)(const void *self, const ir_node *irn, unsigned int i);
-
- /**
- * Ask the backend to assimilate @p reload of operand @p i into @p irn.
- *
- * @param self The this pointer.
- * @param irn The node.
- * @param spill The spill.
- * @param i The position of the reload.
- */
- void (*perform_memory_operand)(const void *self, ir_node *irn, ir_node *spill, unsigned int i);
-};
+void arch_set_frame_offset(ir_node *irn, int bias);
-/**
- * irn_ops base class.
- */
-struct _arch_irn_ops_t {
- const arch_irn_ops_if_t *impl;
-};
-
-extern const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env, const ir_node *irn);
-
-extern void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int bias);
+ir_entity *arch_get_frame_entity(const ir_node *irn);
+void arch_set_frame_entity(ir_node *irn, ir_entity *ent);
+int arch_get_sp_bias(ir_node *irn);
-extern entity *arch_get_frame_entity(const arch_env_t *env, ir_node *irn);
-extern void arch_set_frame_entity(const arch_env_t *env, ir_node *irn, entity *ent);
-extern int arch_get_sp_bias(const arch_env_t *env, ir_node *irn);
-
-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);
+int arch_get_op_estimated_cost(const ir_node *irn);
+arch_inverse_t *arch_get_inverse(const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack);
+int arch_possible_memory_operand(const ir_node *irn, unsigned int i);
+void arch_perform_memory_operand(ir_node *irn, ir_node *spill, unsigned int i);
/**
* 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.
+ * @note Deprecated API! Preferably use
+ * arch_get_in_register_req and
+ * arch_get_out_register_req.
+ *
* @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
+ * @return A pointer to the register requirements. 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);
+const arch_register_req_t *arch_get_register_req(const ir_node *irn, int pos);
/**
* 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);
-
-/**
- * Return the number of registers in a register class which should not be
- * ignored by the register allocator.
- * @param env The architecture environment.
- * @param cls The register class to consider
- * @return The number of non-ignore registers in the register class
- */
-extern int arch_count_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls);
+extern void arch_put_non_ignore_regs(const arch_register_class_t *cls, 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);
+int arch_reg_is_allocatable(const ir_node *irn, int pos, const arch_register_t *reg);
+
+#define arch_reg_out_is_allocatable(irn, reg) arch_reg_is_allocatable(irn, -1, 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, -1 for the output.
* @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);
+const arch_register_class_t *arch_get_irn_reg_class(const ir_node *irn, int pos);
+
+#define arch_get_irn_reg_class_out(irn) arch_get_irn_reg_class(irn, -1)
/**
* 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);
+const arch_register_t *arch_get_irn_register(const ir_node *irn);
+const arch_register_t *arch_irn_get_register(const ir_node *irn, int pos);
/**
* 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.
*/
-extern void arch_set_irn_register(const arch_env_t *env, ir_node *irn,
- const arch_register_t *reg);
+void arch_set_irn_register(ir_node *irn, const arch_register_t *reg);
+void arch_irn_set_register(ir_node *irn, int pos, const arch_register_t *reg);
/**
* 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);
+arch_irn_class_t arch_irn_classify(const ir_node *irn);
-#define arch_irn_class_is(env, irn, irn_class) ((arch_irn_classify(env, irn) & arch_irn_class_ ## irn_class) != 0)
+#define arch_irn_class_is(irn, irn_class) ((arch_irn_classify(irn) & arch_irn_class_ ## irn_class) != 0)
/**
* 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);
+arch_irn_flags_t arch_irn_get_flags(const ir_node *irn);
+
+void arch_irn_set_flags(ir_node *node, arch_irn_flags_t flags);
+void arch_irn_add_flags(ir_node *node, arch_irn_flags_t flags);
+
+#define arch_irn_is(irn, flag) ((arch_irn_get_flags(irn) & arch_irn_flags_ ## flag) != 0)
-#define arch_irn_is(env, irn, flag) ((arch_irn_get_flags(env, irn) & arch_irn_flags_ ## flag) != 0)
+/**
+ * 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.
+ */
+typedef const void *(arch_get_irn_ops_t)(const ir_node *irn);
-#define arch_irn_has_reg_class(env, irn, pos, cls) \
- ((cls) == arch_get_irn_reg_class(env, irn, pos))
+/**
+ * Initialize the architecture environment struct.
+ * @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(const arch_isa_if_t *isa,
+ FILE *file_handle, be_main_env_t *main_env);
-#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))
+/**
+ * Register an instruction set architecture
+ */
+void be_register_isa_if(const char *name, const arch_isa_if_t *isa);
/**
- * Somebody who can be asked about IR nodes.
+ * A register.
*/
-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);
+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. */
+ unsigned index; /**< The index of the register in the class. */
+ arch_register_type_t type; /**< The type of the register. */
+ const arch_register_req_t *single_req;
+};
+
+static inline const arch_register_class_t *
+_arch_register_get_class(const arch_register_t *reg)
+{
+ return reg->reg_class;
+}
+
+static inline
+unsigned _arch_register_get_index(const arch_register_t *reg)
+{
+ return reg->index;
+}
+
+static inline
+const char *_arch_register_get_name(const arch_register_t *reg)
+{
+ return reg->name;
+}
+
+#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) _arch_register_get_name(reg)
+
+/**
+ * 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) != 0)
+
+/**
+ * A class of registers.
+ * Like general purpose or floating point.
+ */
+struct arch_register_class_t {
+ unsigned index; /**< index of this register class */
+ const char *name; /**< The name of the register class.*/
+ unsigned n_regs; /**< Number of registers in this
+ class. */
+ ir_mode *mode; /**< The mode of the register class.*/
+ const arch_register_t *regs; /**< The array of registers. */
+ arch_register_class_flags_t flags; /**< register class flags. */
+ const arch_register_req_t *class_req;
+};
+
+/** return the number of registers in this register class */
+#define arch_register_class_n_regs(cls) ((cls)->n_regs)
+
+/** return the largest mode of this register class */
+#define arch_register_class_mode(cls) ((cls)->mode)
+
+/** return the name of this register class */
+#define arch_register_class_name(cls) ((cls)->name)
+
+/** return the index of this register class */
+#define arch_register_class_index(cls) ((cls)->index)
+
+/** return the register class flags */
+#define arch_register_class_flags(cls) ((cls)->flags)
+
+static inline const arch_register_t *
+_arch_register_for_index(const arch_register_class_t *cls, unsigned idx)
+{
+ assert(idx < cls->n_regs);
+ return &cls->regs[idx];
+}
+
+#define arch_register_for_index(cls, idx) _arch_register_for_index(cls, idx)
+
+/**
+ * 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.
+ */
+#define arch_register_req_is(req, kind) \
+ (((req)->type & (arch_register_req_type_ ## kind)) != 0)
+
+/**
+ * Expresses requirements to register allocation for an operand.
+ */
+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. */
+
+ const unsigned *limited; /**< allowed register bitset */
+
+ unsigned other_same; /**< Bitmask of ins which should use the
+ same register (should_be_same). */
+ unsigned other_different; /**< Bitmask of ins which shall use a
+ different register
+ (must_be_different) */
+};
+
+static inline int reg_reqs_equal(const arch_register_req_t *req1,
+ const arch_register_req_t *req2)
+{
+ if (req1 == req2)
+ return 1;
+
+ if (req1->type != req2->type
+ || req1->cls != req2->cls
+ || req1->other_same != req2->other_same
+ || req1->other_different != req2->other_different)
+ return 0;
+
+ if (req1->limited != NULL) {
+ size_t n_regs;
+
+ if (req2->limited == NULL)
+ return 0;
+
+ n_regs = arch_register_class_n_regs(req1->cls);
+ if (!rbitset_equal(req1->limited, req2->limited, n_regs))
+ return 0;
+ }
+
+ return 1;
+}
+
+/**
+ * An inverse operation returned by the backend
+ */
+struct arch_inverse_t {
+ int n; /**< count of nodes returned in nodes array */
+ int costs; /**< costs of this remat */
+
+ /**< nodes for this inverse operation. shall be in
+ * schedule order. last element is the target value
+ */
+ ir_node **nodes;
+};
+
+struct arch_irn_ops_t {
+
+ /**
+ * Get the register requirements for a given operand.
+ * @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_in)(const ir_node *irn, int pos);
+
+ /**
+ * Classify the node.
+ * @param irn The node.
+ * @return A classification.
+ */
+ arch_irn_class_t (*classify)(const ir_node *irn);
+
+ /**
+ * Get the entity on the stack frame this node depends on.
+ * @param irn The node in question.
+ * @return The entity on the stack frame or NULL, if the node does not have a
+ * stack frame entity.
+ */
+ ir_entity *(*get_frame_entity)(const ir_node *irn);
+
+ /**
+ * Set the entity on the stack frame this node depends on.
+ * @param irn The node in question.
+ * @param ent The entity to set
+ */
+ void (*set_frame_entity)(ir_node *irn, ir_entity *ent);
+
+ /**
+ * Set the offset of a node carrying an entity on the stack frame.
+ * @param irn The node.
+ * @param offset The offset of the node's stack frame entity.
+ */
+ void (*set_frame_offset)(ir_node *irn, int offset);
+
+ /**
+ * Returns the delta of the stackpointer for nodes that increment or
+ * decrement the stackpointer with a constant value. (push, pop
+ * nodes on most architectures).
+ * A positive value stands for an expanding stack area, a negative value for
+ * a shrinking one.
+ *
+ * @param irn The node
+ * @return 0 if the stackpointer is not modified with a constant
+ * value, otherwise the increment/decrement value
+ */
+ int (*get_sp_bias)(const ir_node *irn);
+
+ /**
+ * Returns an inverse operation which yields the i-th argument
+ * of the given node as result.
+ *
+ * @param irn The original operation
+ * @param i Index of the argument we want the inverse operation to yield
+ * @param inverse struct to be filled with the resulting inverse op
+ * @param obstack The obstack to use for allocation of the returned nodes array
+ * @return The inverse operation or NULL if operation invertible
+ */
+ arch_inverse_t *(*get_inverse)(const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack);
+
+ /**
+ * Get the estimated cycle count for @p irn.
+ *
+ * @param irn The node.
+ *
+ * @return The estimated cycle count for this operation
+ */
+ int (*get_op_estimated_cost)(const ir_node *irn);
+
+ /**
+ * Asks the backend whether operand @p i of @p irn can be loaded form memory internally
+ *
+ * @param irn The node.
+ * @param i Index of the argument we would like to know whether @p irn can load it form memory internally
+ *
+ * @return nonzero if argument can be loaded or zero otherwise
+ */
+ int (*possible_memory_operand)(const ir_node *irn, unsigned int i);
+
+ /**
+ * Ask the backend to assimilate @p reload of operand @p i into @p irn.
+ *
+ * @param irn The node.
+ * @param spill The spill.
+ * @param i The position of the reload.
+ */
+ void (*perform_memory_operand)(ir_node *irn, ir_node *spill, unsigned int i);
};
/**
* The code generator interface.
*/
-struct _arch_code_generator_if_t {
+struct arch_code_generator_if_t {
/**
* Initialize the code generator.
* @param birg A backend IRG session.
* @return A newly created code generator.
*/
- void *(*init)(const be_irg_t *birg);
+ void *(*init)(be_irg_t *birg);
+
+ /**
+ * return node used as base in pic code addresses
+ */
+ ir_node* (*get_pic_base)(void *self);
/**
* Called before abi introduce.
void (*prepare_graph)(void *self);
/**
- * Called before scheduling.
+ * Backend may provide an own spiller.
+ * This spiller needs to spill all register classes.
*/
- void (*before_sched)(void *self);
+ void (*spill)(void *self, be_irg_t *birg);
/**
* Called before register allocation.
(cg)->impl->func(cg); \
} while(0)
+#define _arch_cg_call_env(cg, env, func) \
+do { \
+ if((cg)->impl->func) \
+ (cg)->impl->func(cg, env); \
+} while(0)
+
#define arch_code_generator_before_abi(cg) _arch_cg_call(cg, before_abi)
#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_after_ra(cg) _arch_cg_call(cg, after_ra)
#define arch_code_generator_finish(cg) _arch_cg_call(cg, finish)
#define arch_code_generator_done(cg) _arch_cg_call(cg, done)
+#define arch_code_generator_spill(cg, birg) _arch_cg_call_env(cg, birg, spill)
+#define arch_code_generator_has_spiller(cg) ((cg)->impl->spill != NULL)
+#define arch_code_generator_get_pic_base(cg) \
+ ((cg)->impl->get_pic_base != NULL ? (cg)->impl->get_pic_base(cg) : NULL)
/**
* Code generator base class.
*/
-struct _arch_code_generator_t {
+struct arch_code_generator_t {
const arch_code_generator_if_t *impl;
};
-/**
- * ISA base class.
- */
-struct _arch_isa_t {
- const arch_isa_if_t *impl;
- const arch_register_t *sp; /** The stack pointer register. */
- const arch_register_t *bp; /** The base pointer register. */
- const int stack_dir; /** -1 for decreasing, 1 for increasing. */
-};
-
-#define arch_isa_stack_dir(isa) ((isa)->stack_dir)
-#define arch_isa_sp(isa) ((isa)->sp)
-#define arch_isa_bp(isa) ((isa)->bp)
-
/**
* Architecture interface.
*/
-struct _arch_isa_if_t {
-
- /**
- * Initialize the isa interface.
+struct arch_isa_if_t {
+ /**
+ * Initialize the isa interface.
* @param file_handle the file handle to write the output to
* @return a new isa instance
- */
- void *(*init)(FILE *file_handle);
-
- /**
- * 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)(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)(const void *self, int i);
-
- /**
- * Get the register class which shall be used to store a value of a given mode.
- * @param self The this pointer.
- * @param mode The mode in question.
- * @return A register class which can hold values of the given mode.
- */
- const arch_register_class_t *(*get_reg_class_for_mode)(const void *self, const ir_mode *mode);
-
- /**
- * Get the ABI restrictions for procedure calls.
- * @param self The this pointer.
- * @param method_type The type of the method (procedure) in question.
- * @param p The array of parameter locations to be filled.
- */
- void (*get_call_abi)(const void *self, ir_type *method_type, be_abi_call_t *abi);
-
- /**
- * The irn handler for this architecture.
- * The irn handler is registered by the Firm back end
- * when the architecture is initialized.
- * (May be NULL).
- */
- const arch_irn_handler_t *(*get_irn_handler)(const void *self);
-
- /**
- * Get the code generator interface.
- * @param self The this pointer.
- * @return Some code generator interface.
- */
- 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 the necessary alignment for storing a register of given class.
- * @param self The isa object.
- * @param cls The register class.
- * @return The alignment in bytes.
- */
- int (*get_reg_class_alignment)(const void *self, const arch_register_class_t *cls);
-
- /**
- * A "static" function, returns the frontend settings
- * needed for this backend.
- */
- const backend_params *(*get_params)(void);
-
-#ifdef WITH_LIBCORE
- /**
- * Register command line options for this backend.
- * @param grp The root group.
- */
- void (*register_options)(lc_opt_entry_t *grp);
-#endif
-};
+ */
+ arch_env_t *(*init)(FILE *file_handle);
-#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_get_call_abi(isa,tp,abi) ((isa)->impl->get_call_abi((isa), (tp), (abi)))
-#define arch_isa_get_reg_class_for_mode(isa,mode) ((isa)->impl->get_reg_class_for_mode((isa), (mode)))
-#define arch_isa_make_code_generator(isa,irg) ((isa)->impl->make_code_generator((isa), (irg)))
-#define arch_isa_get_reg_class_alignment(isa, cls) ((isa)->impl->get_reg_class_alignment((isa), (cls)))
+ /**
+ * Free the isa instance.
+ */
+ void (*done)(void *self);
+
+ /**
+ * Called directly after initialization. Backend should handle all
+ * intrinsics here.
+ */
+ void (*handle_intrinsics)(void);
-#define ARCH_MAX_HANDLERS 8
+ /**
+ * Get the the number of register classes in the isa.
+ * @return The number of register classes.
+ */
+ unsigned (*get_n_reg_class)(void);
-/**
- * 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. */
- arch_isa_t *isa; /**< The isa about which everything is. */
+ /**
+ * 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)(unsigned i);
+
+ /**
+ * Get the register class which shall be used to store a value of a given mode.
+ * @param self The this pointer.
+ * @param mode The mode in question.
+ * @return A register class which can hold values of the given mode.
+ */
+ const arch_register_class_t *(*get_reg_class_for_mode)(const ir_mode *mode);
+
+ /**
+ * Get the ABI restrictions for procedure calls.
+ * @param self The this pointer.
+ * @param call_type The call type of the method (procedure) in question.
+ * @param p The array of parameter locations to be filled.
+ */
+ void (*get_call_abi)(const void *self, ir_type *call_type, be_abi_call_t *abi);
+
+ /**
+ * Get the code generator interface.
+ * @param self The this pointer.
+ * @return Some code generator interface.
+ */
+ const arch_code_generator_if_t *(*get_code_generator_if)(void *self);
+
+ /**
+ * Get the list scheduler to use. There is already a selector given, the
+ * backend is free to modify and/or ignore it.
+ *
+ * @param self The isa object.
+ * @param selector The selector given by options.
+ * @return The list scheduler selector.
+ */
+ const list_sched_selector_t *(*get_list_sched_selector)(const void *self, list_sched_selector_t *selector);
+
+ /**
+ * Get the ILP scheduler to use.
+ * @param self The isa object.
+ * @return The ILP scheduler selector
+ */
+ const ilp_sched_selector_t *(*get_ilp_sched_selector)(const void *self);
+
+ /**
+ * Get the necessary alignment for storing a register of given class.
+ * @param self The isa object.
+ * @param cls The register class.
+ * @return The alignment in bytes.
+ */
+ int (*get_reg_class_alignment)(const arch_register_class_t *cls);
+
+ /**
+ * A "static" function, returns the frontend settings
+ * needed for this backend.
+ */
+ const backend_params *(*get_params)(void);
+
+ /**
+ * Returns an 2-dim array of execution units, @p irn can be executed on.
+ * The first dimension is the type, the second the allowed units of this
+ * type.
+ * Each dimension is a NULL terminated list.
+ * @param self The isa object.
+ * @param irn The node.
+ * @return An array of allowed execution units.
+ * exec_unit = {
+ * { unit1_of_tp1, ..., unitX1_of_tp1, NULL },
+ * ...,
+ * { unit1_of_tpY, ..., unitXn_of_tpY, NULL },
+ * NULL
+ * };
+ */
+ const be_execution_unit_t ***(*get_allowed_execution_units)(const ir_node *irn);
+
+ /**
+ * Return the abstract machine for this isa.
+ * @param self The isa object.
+ */
+ const be_machine_t *(*get_machine)(const void *self);
+
+ /**
+ * Return an ordered list of irgs where code should be generated for.
+ * If NULL is returned, all irg will be taken into account and they will be
+ * generated in an arbitrary order.
+ * @param self The isa object.
+ * @param irgs A flexible array ARR_F of length 0 where the backend can append the desired irgs.
+ * @return A flexible array ARR_F containing all desired irgs in the desired order.
+ */
+ ir_graph **(*get_backend_irg_list)(const void *self, ir_graph ***irgs);
+
+ /**
+ * mark node as rematerialized
+ */
+ void (*mark_remat)(ir_node *node);
- arch_irn_handler_t const *handlers[ARCH_MAX_HANDLERS]; /**< The handlers are organized as
- a stack. */
+ /**
+ * parse an assembler constraint part and set flags according to its nature
+ * advances the *c pointer to point to the last parsed character (so if you
+ * parse a single character don't advance c)
+ */
+ asm_constraint_flags_t (*parse_asm_constraint)(const char **c);
- int handlers_tos; /**< The stack pointer of the handler
- stack. */
+ /**
+ * returns true if the string is a valid clobbered (register) in this
+ * backend
+ */
+ int (*is_valid_clobber)(const char *clobber);
};
-/**
- * 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)
+#define arch_env_done(env) ((env)->impl->done(env))
+#define arch_env_handle_intrinsics(env) \
+ do { if((env)->impl->handle_intrinsics != NULL) (env)->impl->handle_intrinsics(); } while(0)
+#define arch_env_get_n_reg_class(env) ((env)->impl->get_n_reg_class())
+#define arch_env_get_reg_class(env,i) ((env)->impl->get_reg_class(i))
+#define arch_env_get_reg_class_for_mode(env,mode) ((env)->impl->get_reg_class_for_mode((mode)))
+#define arch_env_get_call_abi(env,tp,abi) ((env)->impl->get_call_abi((env), (tp), (abi)))
+#define arch_env_get_code_generator_if(env) ((env)->impl->get_code_generator_if((env)))
+#define arch_env_get_list_sched_selector(env,selector) ((env)->impl->get_list_sched_selector((env), (selector)))
+#define arch_env_get_ilp_sched_selector(env) ((env)->impl->get_ilp_sched_selector(env))
+#define arch_env_get_reg_class_alignment(env,cls) ((env)->impl->get_reg_class_alignment((cls)))
+#define arch_env_get_params(env) ((env)->impl->get_params())
+#define arch_env_get_allowed_execution_units(env,irn) ((env)->impl->get_allowed_execution_units((irn)))
+#define arch_env_get_machine(env) ((env)->impl->get_machine(env))
+#define arch_env_get_backend_irg_list(env,irgs) ((env)->impl->get_backend_irg_list((env), (irgs)))
+#define arch_env_parse_asm_constraint(env,c) ((env)->impl->parse_asm_constraint((c))
+#define arch_env_is_valid_clobber(env,clobber) ((env)->impl->is_valid_clobber((clobber))
+#define arch_env_mark_remat(env,node) \
+ do { if ((env)->impl->mark_remat != NULL) (env)->impl->mark_remat((node)); } while(0)
/**
- * Initialize the architecture environment struct.
- * @param isa The isa which shall be put into the environment.
- * @param file_handle The file handle
- * @return The environment.
+ * ISA base class.
*/
-extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa, FILE *file_handle);
+struct arch_env_t {
+ const arch_isa_if_t *impl;
+ const arch_register_t *sp; /** The stack pointer register. */
+ const arch_register_t *bp; /** The base pointer register. */
+ const arch_register_class_t *link_class; /** The static link pointer register class. */
+ int stack_dir; /** -1 for decreasing, 1 for increasing. */
+ int stack_alignment; /** power of 2 stack alignment */
+ const be_main_env_t *main_env; /** the be main environment */
+ int spill_cost; /** cost for a be_Spill node */
+ int reload_cost; /** cost for a be_Reload node */
+};
+
+static inline unsigned arch_irn_get_n_outs(const ir_node *node)
+{
+ backend_info_t *info = be_get_info(node);
+ if (info->out_infos == NULL)
+ return 0;
+
+ return ARR_LEN(info->out_infos);
+}
+
+static inline const arch_irn_ops_t *get_irn_ops_simple(const ir_node *node)
+{
+ const ir_op *ops = get_irn_op(node);
+ const arch_irn_ops_t *be_ops = get_op_ops(ops)->be_ops;
+ assert(!is_Proj(node));
+ return be_ops;
+}
+
+static inline const arch_register_req_t *arch_get_register_req_out(
+ const ir_node *irn)
+{
+ int pos = 0;
+ backend_info_t *info;
+
+ if (is_Proj(irn)) {
+ pos = get_Proj_proj(irn);
+ irn = get_Proj_pred(irn);
+ } else if (get_irn_mode(irn) == mode_T) {
+ /* TODO: find out who does this and fix the caller! */
+ return arch_no_register_req;
+ }
+ info = be_get_info(irn);
+ if (info->out_infos == NULL)
+ return arch_no_register_req;
+
+ return info->out_infos[pos].req;
+}
+
+static inline bool arch_irn_is_ignore(const ir_node *irn)
+{
+ const arch_register_req_t *req = arch_get_register_req_out(irn);
+ return !!(req->type & arch_register_req_type_ignore);
+}
+
+static inline bool arch_irn_consider_in_reg_alloc(
+ const arch_register_class_t *cls, const ir_node *node)
+{
+ const arch_register_req_t *req = arch_get_register_req_out(node);
+ return
+ req->cls == cls &&
+ !(req->type & arch_register_req_type_ignore);
+}
/**
- * Add a node handler to the environment.
- * @param env The environment.
- * @param handler A node handler.
- * @return The environment itself.
+ * Get register constraints for an operand at position @p
*/
-extern arch_env_t *arch_env_push_irn_handler(arch_env_t *env, const arch_irn_handler_t *handler);
+static inline const arch_register_req_t *arch_get_in_register_req(
+ const ir_node *node, int pos)
+{
+ const arch_irn_ops_t *ops = get_irn_ops_simple(node);
+ return ops->get_irn_reg_req_in(node, pos);
+}
/**
- * Remove a node handler from the handler stack.
- * @param env The architecture environment.
- * @return The popped handler.
+ * Get register constraint for a produced result (the @p pos result)
*/
-extern const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env);
+static inline const arch_register_req_t *arch_get_out_register_req(
+ const ir_node *node, int pos)
+{
+ const backend_info_t *info = be_get_info(node);
+ if (info->out_infos == NULL)
+ return arch_no_register_req;
+ return info->out_infos[pos].req;
+}
+static inline void arch_set_out_register_req(ir_node *node, int pos,
+ const arch_register_req_t *req)
+{
+ backend_info_t *info = be_get_info(node);
+ assert(pos < (int) arch_irn_get_n_outs(node));
+ info->out_infos[pos].req = req;
+}
-#endif /* _FIRM_BEARCH_H */
+#endif