X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=e6d1431d3024ffd42975cc2e8e8802c0115ce50e;hb=48071aea23fabc99044488d12757f274bc956fae;hp=edb58e776f6c48ace16c035fb1e72d948fdfb80e;hpb=65bbd0e5ca976c7e6b41418489047e7edd95f2b1;p=libfirm diff --git a/ir/be/bearch.h b/ir/be/bearch.h index edb58e776..e6d1431d3 100644 --- a/ir/be/bearch.h +++ b/ir/be/bearch.h @@ -177,14 +177,17 @@ extern char *arch_register_req_format(char *buf, size_t len, const arch_register * Certain node classes which are relevant for the register allocator. */ 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_const, + 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, } arch_irn_class_t; /** @@ -277,6 +280,14 @@ struct _arch_irn_ops_if_t { */ 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. @@ -289,6 +300,7 @@ struct _arch_irn_ops_if_t { * 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 @@ -297,6 +309,36 @@ struct _arch_irn_ops_if_t { */ 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); }; /** @@ -306,11 +348,17 @@ 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); 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_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 *reload, unsigned int i); /** * Get the register requirements for a node. @@ -361,6 +409,15 @@ 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. @@ -410,6 +467,8 @@ extern void arch_set_irn_register(const arch_env_t *env, ir_node *irn, */ extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn); +#define arch_irn_class_is(env, irn, irn_class) ((arch_irn_classify(env, irn) & arch_irn_class_ ## irn_class) != 0) + /** * Get the flags of a node. * @param env The architecture environment. @@ -478,7 +537,14 @@ struct _arch_code_generator_if_t { void (*after_ra)(void *self); /** - * Called after everything happened. + * Called directly before done is called. This should be the last place + * where the irg is modified. + */ + void (*finish)(void *self); + + /** + * Called after everything happened. This call should emit the final + * assembly code but avoid changing the irg. * The code generator must also be de-allocated here. */ void (*done)(void *self); @@ -499,6 +565,7 @@ do { \ #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) /** @@ -598,11 +665,17 @@ struct _arch_isa_if_t { */ 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. - */ + /** + * Register command line options for this backend. + * @param grp The root group. + */ void (*register_options)(lc_opt_entry_t *grp); #endif }; @@ -662,4 +735,5 @@ extern arch_env_t *arch_env_push_irn_handler(arch_env_t *env, const arch_irn_han */ extern const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env); + #endif /* _FIRM_BEARCH_H */