X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=86005f4a231ecf2691e2505cfa5729ba1061e640;hb=f436f72951577e35b60e0ea1f2e6a536e4f479bb;hp=c9fefb31bac58b306fb4b9e8415784eacb25ecb7;hpb=841a0e3596a9ae5532c0e21d2087475ceaad4953;p=libfirm diff --git a/ir/be/bearch.h b/ir/be/bearch.h index c9fefb31b..86005f4a2 100644 --- a/ir/be/bearch.h +++ b/ir/be/bearch.h @@ -1,54 +1,32 @@ #ifndef _FIRM_BEARCH_H #define _FIRM_BEARCH_H -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - +#include "firm_config.h" #ifdef WITH_LIBCORE #include #endif -#include "type.h" - -#include "irnode.h" -#include "irmode.h" +#include "firm_types.h" #include "bitset.h" -#include "hashptr.h" -#include "fourcc.h" -#include "set.h" -#include "list.h" -#include "ident.h" #include "belistsched.h" #include "beabi_t.h" - -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; +#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_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_sp = 8, /**< This register is the stack pointer of the architecture. */ - arch_register_type_bp = 16, /**< The register is the base pointer of the architecture. */ + arch_register_type_ignore = 4, /**< Do not consider this register when allocating. */ } arch_register_type_t; /** @@ -58,7 +36,7 @@ typedef enum _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) + (((reg)->type & arch_register_type_ ## kind) != 0) /** * A register. @@ -97,8 +75,12 @@ struct _arch_register_class_t { 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. @@ -144,6 +126,8 @@ typedef enum _arch_register_req_type_t { 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 */ } arch_register_req_type_t; /** @@ -179,6 +163,16 @@ typedef struct _arch_register_req_t { must be different (case must_be_different). */ } arch_register_req_t; +/** + * 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. + */ +extern char *arch_register_req_format(char *buf, size_t len, const arch_register_req_t *req); + + /** * Certain node classes which are relevant for the register allocator. */ @@ -189,9 +183,26 @@ typedef enum _arch_irn_class_t { arch_irn_class_copy, arch_irn_class_perm, arch_irn_class_branch, - arch_irn_class_call + arch_irn_class_call, + arch_irn_class_const, + arch_irn_class_load, + arch_irn_class_store, + arch_irn_class_stackparam, } 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. */ @@ -199,9 +210,19 @@ 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 should be replicated instead of spilled/reloaded. */ - arch_irn_flags_ignore = 4, /**< Do not consider the node during register allocation. */ + 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 { /** @@ -252,14 +273,55 @@ struct _arch_irn_ops_if_t { arch_irn_flags_t (*get_flags)(const void *self, const ir_node *irn); /** - * Set a bias for the stack pointer. - * If the node in question uses the stack pointer for indexing, it must - * consider the value of bias additionally. + * Get the entity on the stack frame this node depends on. * @param self The this pointer. * @param irn The node in question. - * @param bias The bias. + * @return The entity on the stack frame or NULL, if the node does not has a stack frame entity. */ - void (*set_stack_bias)(const void *self, ir_node *irn, int bias); + entity *(*get_frame_entity)(const void *self, const ir_node *irn); + + /** + * 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 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); + }; /** @@ -269,8 +331,11 @@ struct _arch_irn_ops_t { const arch_irn_ops_if_t *impl; }; -extern void -arch_set_stack_bias(const arch_env_t *env, ir_node *irn, int bias); +extern void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int bias); + +extern entity *arch_get_frame_entity(const arch_env_t *env, 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); /** * Get the register requirements for a node. @@ -321,6 +386,15 @@ extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, */ 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); + /** * Check, if a register is assignable to an operand of a node. * @param env The architecture environment. @@ -336,7 +410,7 @@ extern int arch_reg_is_allocatable(const arch_env_t *env, * 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. */ @@ -378,16 +452,16 @@ extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node * */ extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn); -#define arch_irn_is_ignore(env, irn) ((arch_irn_get_flags(env, irn) & arch_irn_flags_ignore) != 0) +#define arch_irn_is(env, irn, flag) ((arch_irn_get_flags(env, irn) & arch_irn_flags_ ## flag) != 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)) + (arch_irn_has_reg_class(env, irn, -1, cls) && !arch_irn_is(env, irn, ignore)) /** - * Somebody who can be asked about nodes. + * Somebody who can be asked about IR nodes. */ struct _arch_irn_handler_t { @@ -399,23 +473,23 @@ struct _arch_irn_handler_t { */ const void *(*get_irn_ops)(const arch_irn_handler_t *handler, const ir_node *irn); - }; /** - * The code generator. + * The code generator interface. */ 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. + * @param birg A backend IRG session. * @return A newly created code generator. */ - void *(*init)(FILE *file, ir_graph *irg, const arch_env_t *env); + void *(*init)(const be_irg_t *birg); + + /** + * Called before abi introduce. + */ + void (*before_abi)(void *self); /** * Called, when the graph is being normalized. @@ -433,38 +507,32 @@ struct _arch_code_generator_if_t { void (*before_ra)(void *self); /** - * Called after register allocation to lower Spills to Stores - * @param self The code generator - * @param spill The spill node to lower - * @return The new backend node which substitutes the spill + * Called after register allocation. */ - ir_node *(*lower_spill)(void *self, ir_node *spill); - - /** - * Called after register allocation to lower Reloads to Loads - * @param self The code generator - * @param reload The reload node to lower - * @return The new backend node which substitutes the reload - */ - ir_node *(*lower_reload)(void *self, ir_node *reload); + void (*after_ra)(void *self); /** * Called after everything happened. * The code generator must also be de-allocated here. */ void (*done)(void *self); - }; +/** + * helper macro: call function func from the code generator + * if it's implemented. + */ #define _arch_cg_call(cg, func) \ do { \ if((cg)->impl->func) \ (cg)->impl->func(cg); \ } 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_done(cg) _arch_cg_call(cg, done) /** @@ -493,14 +561,12 @@ struct _arch_isa_t { */ struct _arch_isa_if_t { -#ifdef WITH_LIBCORE - void (*register_options)(lc_opt_entry_t *grp); -#endif - /** * Initialize the isa interface. + * @param file_handle the file handle to write the output to + * @return a new isa instance */ - void *(*init)(void); + void *(*init)(FILE *file_handle); /** * Free the isa instance. @@ -557,14 +623,37 @@ struct _arch_isa_if_t { * @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 }; -#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_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))) #define ARCH_MAX_HANDLERS 8 @@ -592,10 +681,11 @@ struct _arch_env_t { /** * 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); /** * Add a node handler to the environment. @@ -603,6 +693,13 @@ extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa); * @param handler A node handler. * @return The environment itself. */ -extern arch_env_t *arch_env_add_irn_handler(arch_env_t *env, const arch_irn_handler_t *handler); +extern arch_env_t *arch_env_push_irn_handler(arch_env_t *env, const arch_irn_handler_t *handler); + +/** + * Remove a node handler from the handler stack. + * @param env The architecture environment. + * @return The popped handler. + */ +extern const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env); #endif /* _FIRM_BEARCH_H */