X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=dbc29412a22552d3ead8ec2cfdcefaacc791a3b3;hb=6ae2d84d2d3e245249b5a9baec13895838d22b64;hp=b8f8817d10dc575d11c938fda9e252458f541851;hpb=fd61324a4bfc64ce80b75fb055dfc8348b34d036;p=libfirm diff --git a/ir/be/bearch.h b/ir/be/bearch.h index b8f8817d1..dbc29412a 100644 --- a/ir/be/bearch.h +++ b/ir/be/bearch.h @@ -1,26 +1,15 @@ #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" @@ -30,14 +19,14 @@ 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_ignore = 4, /**< Do not consider this register when allocating. */ } arch_register_type_t; /** @@ -47,7 +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) != 0) + (((reg)->type & arch_register_type_ ## kind) != 0) /** * A register. @@ -86,8 +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. @@ -133,6 +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; /** @@ -188,9 +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. */ @@ -199,7 +211,8 @@ 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, /**< Ignore node during register allocation. */ - arch_irn_flags_last = arch_irn_flags_ignore + arch_irn_flags_modify_sp = 8, /**< I modify the stack pointer. */ + arch_irn_flags_last = arch_irn_flags_modify_sp } arch_irn_flags_t; /** @@ -274,6 +287,50 @@ struct _arch_irn_ops_if_t { * @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); + + /** + * Ask the backend to assimilate @p reload of operand @p i into @p irn. + * + * @param self The this pointer. + * @param irn The node. + * @param reload The reload. + * @param i The position of the reload. + */ + void (*perform_memory_operand)(const void *self, ir_node *irn, ir_node *reload, unsigned int i); }; /** @@ -287,6 +344,10 @@ 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); +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 *reload, unsigned int i); + /** * Get the register requirements for a node. * @param env The architecture environment. @@ -336,6 +397,15 @@ 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. @@ -351,7 +421,7 @@ 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. */ @@ -393,16 +463,16 @@ 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 { @@ -414,22 +484,18 @@ 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 birg A backend IRG session. * @return A newly created code generator. */ - void *(*init)(FILE *file, const be_irg_t *birg); + void *(*init)(const be_irg_t *birg); /** * Called before abi introduce. @@ -461,9 +527,12 @@ struct _arch_code_generator_if_t { * 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) \ @@ -503,14 +572,12 @@ 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. @@ -568,14 +635,36 @@ struct _arch_isa_if_t { */ 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 @@ -603,10 +692,11 @@ 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.