X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=578be58b822ee98fb0cb90c7ad824d205acb3783;hb=e6ad8ee4680a88db8652483c2c6f3124f3d9a888;hp=c189cbe8b03404217b977a6e6275b07c8047e963;hpb=071b81998b17c006621e299c51aafd7ffc19f27a;p=libfirm diff --git a/ir/be/bearch.h b/ir/be/bearch.h index c189cbe8b..578be58b8 100644 --- a/ir/be/bearch.h +++ b/ir/be/bearch.h @@ -10,6 +10,8 @@ #include #endif +#include "type.h" + #include "irnode.h" #include "irmode.h" @@ -21,6 +23,8 @@ #include "ident.h" #include "belistsched.h" +#include "beabi_t.h" +#include "be_t.h" typedef struct _arch_register_class_t arch_register_class_t; typedef struct _arch_register_t arch_register_t; @@ -37,13 +41,13 @@ 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_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_t; /** @@ -53,7 +57,7 @@ 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. @@ -88,6 +92,7 @@ static INLINE int _arch_register_get_index(const arch_register_t *reg) 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. */ }; @@ -156,7 +161,7 @@ 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)(const ir_node *irn, int pos, bitset_t *bs); + void (*limited)(void *limited_env, bitset_t *bs); /**< In case of the 'limited' constraint, this function must put all allowable @@ -164,12 +169,25 @@ typedef struct _arch_register_req_t { return the number of registers in the bitset. */ - 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. */ + 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; +/** + * 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. */ @@ -187,10 +205,21 @@ typedef enum _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 + 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, /**< Ignore node during register allocation. */ + arch_irn_flags_last = arch_irn_flags_ignore } 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 { /** @@ -240,6 +269,21 @@ struct _arch_irn_ops_if_t { */ 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 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); }; /** @@ -249,6 +293,10 @@ struct _arch_irn_ops_t { const arch_irn_ops_if_t *impl; }; +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); + /** * Get the register requirements for a node. * @param env The architecture environment. @@ -281,15 +329,22 @@ extern int arch_is_register_operand(const arch_env_t *env, * @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. @@ -348,9 +403,14 @@ 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_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)) + /** * Somebody who can be asked about nodes. */ @@ -376,11 +436,10 @@ 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)(FILE *file, const be_irg_t *birg); /** * Called, when the graph is being normalized. @@ -398,14 +457,9 @@ struct _arch_code_generator_if_t { 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 + * Called after register allocation. */ - ir_node *(*lower_reload)(void *self, ir_node *reload); + void (*after_ra)(void *self); /** * Called after everything happened. @@ -424,6 +478,7 @@ do { \ #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) /** @@ -438,8 +493,15 @@ struct _arch_code_generator_t { */ 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. */ @@ -472,6 +534,22 @@ struct _arch_isa_if_t { */ 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 @@ -494,19 +572,14 @@ struct _arch_isa_if_t { */ const list_sched_selector_t *(*get_list_sched_selector)(const void *self); - /** - * 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 - */ - 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_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_MAX_HANDLERS 8 @@ -545,7 +618,13 @@ 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 */