X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbenode_t.h;h=ff0af86c82ab45084c8fd68bbea70a7696eb92e4;hb=f56ec028e3585aa134de4c4119a52b9a88de56fe;hp=a0e6ac427018aa68327d1f5d036f3dfbca13c6d8;hpb=d1ea6b5491733b44c3ff046ed7fc1859f5dda8e5;p=libfirm diff --git a/ir/be/benode_t.h b/ir/be/benode_t.h index a0e6ac427..ff0af86c8 100644 --- a/ir/be/benode_t.h +++ b/ir/be/benode_t.h @@ -1,83 +1,538 @@ -/** - * @file benode_t.h - * @date 17.05.2005 - * @author Sebastian Hack +/* + * Copyright (C) 1995-2007 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. * - * Backend node support. + * Licensees holding valid libFirm Professional Edition licenses may use + * this file in accordance with the libFirm Commercial License. + * Agreement provided with the Software. * - * Copyright (C) 2005 Universitaet Karlsruhe - * Released under the GPL + * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE + * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE. */ -#ifndef _BENODE_T_H -#define _BENODE_T_H +/** + * @file + * @brief Backend node support for generic backend nodes. + * @author Sebastian Hack + * @date 17.05.2005 + * @version $Id$ + * + * Backend node support for generic backend nodes. + * This file provides Perm, Copy, Spill and Reload nodes. + */ +#ifndef FIRM_BE_BENODE_T_H +#define FIRM_BE_BENODE_T_H -#include "firm_config.h" -#include "pmap.h" +#include -#include "irmode.h" +#include "firm_types.h" #include "irnode.h" -#include "entity_t.h" - -#include "be_t.h" #include "bearch.h" +#define BE_OUT_POS(p) (-((p) + 1)) + +/** + * The benode op's. Must be available to register emitter function. + */ +extern ir_op *op_be_Spill; +extern ir_op *op_be_Reload; +extern ir_op *op_be_Perm; +extern ir_op *op_be_MemPerm; +extern ir_op *op_be_Copy; +extern ir_op *op_be_Keep; +extern ir_op *op_be_CopyKeep; +extern ir_op *op_be_Call; +extern ir_op *op_be_Return; +extern ir_op *op_be_IncSP; +extern ir_op *op_be_AddSP; +extern ir_op *op_be_SubSP; +extern ir_op *op_be_SetSP; +extern ir_op *op_be_RegParams; +extern ir_op *op_be_StackParam; +extern ir_op *op_be_FrameAddr; +extern ir_op *op_be_FrameLoad; +extern ir_op *op_be_FrameStore; +extern ir_op *op_be_Barrier; + typedef enum { - beo_NoBeOp = 0, + beo_NoBeOp = -1, beo_Spill, beo_Reload, beo_Perm, + beo_MemPerm, beo_Copy, beo_Keep, + beo_CopyKeep, + beo_Call, + beo_Return, + beo_AddSP, + beo_SubSP, + beo_IncSP, + beo_SetSP, + beo_RegParams, + beo_StackParam, + beo_FrameLoad, + beo_FrameStore, + beo_FrameAddr, + beo_Barrier, beo_Last } be_opcode_t; +/** Not used yet. */ +typedef enum { + be_frame_flag_spill = 1, + be_frame_flag_local = 2, + be_frame_flag_arg = 4 +} be_frame_flag_t; + +/** + * A "symbolic constant" for the size of the stack frame to use with IncSP nodes. + * It gets back-patched to the real size as soon it is known. + */ +#define BE_STACK_FRAME_SIZE_EXPAND INT_MAX +#define BE_STACK_FRAME_SIZE_SHRINK INT_MIN + +/** + * Determines if irn is a be_node. + */ +int is_be_node(const ir_node *irn); + +/** + * Create all BE specific opcodes. + */ void be_node_init(void); -const arch_irn_handler_t be_node_irn_handler; +/** + * Position numbers for the be_Spill inputs. + */ +enum { + be_pos_Spill_frame = 0, + be_pos_Spill_val = 1 +}; + +/** + * Make a new Spill node. + */ +ir_node *be_new_Spill(const arch_register_class_t *cls, const arch_register_class_t *cls_frame, + ir_graph *irg, ir_node *bl, ir_node *frame, ir_node *to_spill); + +/** + * Position numbers for the be_Reload inputs. + */ +enum { + be_pos_Reload_frame = 0, + be_pos_Reload_mem = 1 +}; + +/** + * Make a new Reload node. + */ +ir_node *be_new_Reload(const arch_register_class_t *cls, const arch_register_class_t *cls_frame, + ir_graph *irg, ir_node *bl, ir_node *frame, ir_node *mem, ir_mode *mode); + +/** + * Position numbers for the be_Copy inputs. + */ +enum { + be_pos_Copy_op = 0 +}; -ir_node *be_new_Spill(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *node_to_spill, ir_node *ctx); -ir_node *be_new_Reload(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_mode *mode, ir_node *spill_node); +/** + * Make a new Copy node. + */ ir_node *be_new_Copy(const arch_register_class_t *cls, ir_graph *irg, ir_node *block, ir_node *in); +/** Returns the Copy Argument. */ +ir_node *be_get_Copy_op(const ir_node *cpy); +/** Sets the Copy Argument. */ +void be_set_Copy_op(ir_node *cpy, ir_node *op); + +/** + * Make a new Perm node. + */ ir_node *be_new_Perm(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int arity, ir_node *in[]); +/** + * Create a new MemPerm node. + */ +ir_node *be_new_MemPerm(const arch_env_t *arch_env, ir_graph *irg, ir_node *bl, int n, ir_node *in[]); ir_node *be_new_Keep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int arity, ir_node *in[]); -ir_node *be_spill(const arch_env_t *arch_env, ir_node *irn,ir_node *spill_ctx); -ir_node *be_reload(const arch_env_t *arch_env, const arch_register_class_t *cls, ir_node *irn, int pos, ir_mode *mode, ir_node *spill); +void be_Keep_add_node(ir_node *keep, const arch_register_class_t *cls, ir_node *node); + +/** + * Position numbers for the be_FrameLoad inputs + */ +enum { + be_pos_FrameLoad_mem = 0, + be_pos_FrameLoad_ptr = 1 +}; + +ir_node *be_new_FrameLoad(const arch_register_class_t *cls_frame, const arch_register_class_t *cls_data, + ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *frame, ir_entity *ent); + +/** + * Position numbers for the be_FrameStore inputs + */ +enum { + be_pos_FrameStore_mem = 0, + be_pos_FrameStore_ptr = 1, + be_pos_FrameStore_val = 2 +}; + +ir_node *be_new_FrameStore(const arch_register_class_t *cls_frame, const arch_register_class_t *cls_data, + ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *frame, ir_node *data, ir_entity *ent); + +/** + * Position numbers for the be_FrameAddr inputs + */ +enum { + be_pos_FrameAddr_ptr = 0 +}; + +ir_node *be_new_FrameAddr(const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_node *frame, ir_entity *ent); + +/** + * Position numbers for the be_AddSP inputs + */ +enum { + be_pos_AddSP_old_sp = 0, + be_pos_AddSP_size = 1, + be_pos_AddSP_last = 2 +}; + +enum { + pn_be_AddSP_res = 0, + pn_be_AddSP_M = 1, + pn_be_AddSP_last = 2 +}; + +/** + * Make a new AddSP node. + * An AddSP node expresses an increase of the stack pointer in the direction the stack + * grows. In contrast to IncSP, the amount of bytes the stack pointer is grown, is not + * given by a constant but an ordinary Firm node. + * @param sp The stack pointer register. + * @param irg The graph. + * @param bl The block. + * @param old_sp The node representing the old stack pointer value. + * @param sz The node expressing the size by which the stack pointer shall be grown. + * @return A new AddSP node. + */ +ir_node *be_new_AddSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *sz); + +/** + * Position numbers for the be_SubSP inputs + */ +enum { + be_pos_SubSP_old_sp = 0, + be_pos_SubSP_size = 1, + be_pos_SubSP_last = 2 +}; + +enum { + pn_be_SubSP_res = 0, + pn_be_SubSP_M = 1, + pn_be_SubSP_last = 2 +}; + +/** + * Make a new SubSP node. + * A SubSP node expresses a decrease of the stack pointer in the direction the stack + * grows. In contrast to IncSP, the amount of bytes the stack pointer is grown, is not + * given by a constant but an ordinary Firm node. + * @param sp The stack pointer register. + * @param irg The graph. + * @param bl The block. + * @param old_sp The node representing the old stack pointer value. + * @param sz The node expressing the size by which the stack pointer shall be grown. + * @return A new DecSP node. + */ +ir_node *be_new_SubSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *sz); + +ir_node *be_new_SetSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *operand, ir_node *mem); + +/** + * Make a stack pointer increase/decrease node. + * @param sp The stack pointer register. + * @param irg The graph to insert the node to. + * @param bl The block to insert the node into. + * @param old_sp The node defining the former stack pointer. + * @param amount The mount of bytes the stack shall be expanded/shrinked (see set_IncSP_offset) + * @param dir The direction in which the stack pointer shall be modified: + * Along the stack's growing direction or against. + * @return A new stack pointer increment/decrement node. + * @note This node sets a register constraint to the @p sp register on its output. + */ +ir_node *be_new_IncSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, int offset); + +/** Returns the previous node that computes the stack pointer. */ +ir_node *be_get_IncSP_pred(ir_node *incsp); + +/** Sets the previous node that computes the stack pointer. */ +void be_set_IncSP_pred(ir_node *incsp, ir_node *pred); + +/** + * Sets a new offset to a IncSP node. + * A positive offset means expanding the stack, a negative offset shrinking + * an offset is == BE_STACK_FRAME_SIZE will be replaced by the real size of the + * stackframe in the fix_stack_offsets phase. + */ +void be_set_IncSP_offset(ir_node *irn, int offset); + +/** Gets the offset from a IncSP node. */ +int be_get_IncSP_offset(const ir_node *irn); + +/** Gets the call entity or NULL if this is no static call. */ +ir_entity *be_Call_get_entity(const ir_node *call); +/** Sets the call entity. */ +void be_Call_set_entity(ir_node *call, ir_entity *ent); +/** Gets the call type. */ +ir_type *be_Call_get_type(ir_node *call); +/** Sets the call type. */ +void be_Call_set_type(ir_node *call, ir_type *call_tp); + +/** + * Position numbers for the be_Call inputs. + */ +enum { + be_pos_Call_mem = 0, /**< memory input of a be_Call node */ + be_pos_Call_sp = 1, /**< stack pointer input of a be_Call node */ + be_pos_Call_ptr = 2, /**< call pointer input of a be_Call node */ + be_pos_Call_first_arg = 3 /**< first argument input of a be_Call node */ +}; + +/** + * Projection numbers for result of be_Call node: use for Proj nodes! + */ +typedef enum { + pn_be_Call_M_regular = pn_Call_M_regular, /**< The memory result of a be_Call. */ + pn_be_Call_first_res = pn_Call_max /**< The first result proj number of a be_Call. */ +} pn_be_Call; + +/** + * Construct a new be_Call + */ +ir_node *be_new_Call(dbg_info *dbg, ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *sp, ir_node *ptr, + int n_outs, int n, ir_node *in[], ir_type *call_tp); + +/** + * Position numbers for the be_Return inputs. + */ +enum { + be_pos_Return_mem = 0, /**< memory input of a be_Return node */ + be_pos_Return_sp = 1, /**< stack pointer input of a be_Return node */ + be_pos_Return_val = 2, /**< first "real" return value if any */ +}; + +/** + * Construct a new be_Return. + * @param irg the graph where the new node will be placed + * @param bl the block where the new node will be placed + * @param n_res number of "real" results + * @param n number of inputs + * @param in input array + */ +ir_node *be_new_Return(dbg_info *dbg, ir_graph *irg, ir_node *bl, int n_res, int n, ir_node *in[]); + +/** Returns the number of real returns values */ +int be_Return_get_n_rets(ir_node *ret); + +/** appends a node to the return node, returns the position of the node */ +int be_Return_append_node(ir_node *ret, ir_node *node); + +/** + * StackParam input positions + */ +enum { + be_pos_StackParam_ptr = 0 +}; + +/** + * Construct a new Stack Parameter node. + */ +ir_node *be_new_StackParam(const arch_register_class_t *cls, const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_mode *mode, ir_node *frame_pointer, ir_entity *ent); +ir_node *be_new_RegParams(ir_graph *irg, ir_node *bl, int n_out); + +ir_node *be_new_Barrier(ir_graph *irg, ir_node *bl, int n, ir_node *in[]); + +/** + * Appends a node to a barrier, returns the result proj of the node + */ +ir_node *be_Barrier_append_node(ir_node *barrier, ir_node *node); + +/** + * Appends a register out requirement to a RegParams node + * + * @returns the proj node for the new register + */ +ir_node *be_RegParams_append_out_reg(ir_node *regparams, + const arch_env_t *arch_env, + const arch_register_t *reg); + +/** + * Make a spill node. + * + * @param arch_env The architecture environment. + * @param irn The node to be spilled. + * @param spill_ctx The context in which the spill is introduced (This is mostly == irn up to the case of Phis). + * @return The new spill node. + */ +ir_node *be_spill(const arch_env_t *arch_env, ir_node *irn); + +/** + * Make a reload and insert it into the schedule. + * + * @param arch_env The architecture environment. + * @param cls The register class of the reloaded value. + * @param insert The node in the schedule in front of which the reload is inserted. + * @param mode The mode of the original (spilled) value. + * @param spill The spill node corresponding to this reload. + * @return A freshly made reload. + */ +ir_node *be_reload(const arch_env_t *arch_env, const arch_register_class_t *cls, ir_node *insert, ir_mode *mode, ir_node *spill); + +enum { + be_pos_CopyKeep_op = 0 +}; +ir_node *be_new_CopyKeep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *src, int n, ir_node *in_keep[], ir_mode *mode); +ir_node *be_new_CopyKeep_single(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *src, ir_node *keep, ir_mode *mode); +ir_node *be_get_CopyKeep_op(const ir_node *cpy); +void be_set_CopyKeep_op(ir_node *cpy, ir_node *op); + +/** + * Get the backend opcode of a backend node. + * @param irn The node. + * @return The backend opcode. + */ +be_opcode_t be_get_irn_opcode(const ir_node *irn); int be_is_Spill(const ir_node *irn); int be_is_Reload(const ir_node *irn); int be_is_Copy(const ir_node *irn); int be_is_Perm(const ir_node *irn); +int be_is_MemPerm(const ir_node *irn); int be_is_Keep(const ir_node *irn); +int be_is_CopyKeep(const ir_node *irn); +int be_is_Call(const ir_node *irn); +int be_is_Return(const ir_node *irn); +int be_is_IncSP(const ir_node *irn); +int be_is_SetSP(const ir_node *irn); +int be_is_AddSP(const ir_node *irn); +int be_is_SubSP(const ir_node *irn); +int be_is_RegParams(const ir_node *irn); +int be_is_StackParam(const ir_node *irn); +int be_is_FrameAddr(const ir_node *irn); +int be_is_FrameLoad(const ir_node *irn); +int be_is_FrameStore(const ir_node *irn); +int be_is_Barrier(const ir_node *irn); + +/** + * Try to avoid this function and better call arch_get_frame_entity! + * + * Returns the frame entity used by the be node + */ +ir_entity *be_get_frame_entity(const ir_node *irn); + +/** + * Returns the frame offset of this node. + */ +int be_get_frame_offset(const ir_node *irn); + +ir_node* be_get_Reload_mem(const ir_node *irn); +ir_node *be_get_Reload_frame(const ir_node *irn); +ir_node* be_get_Spill_val(const ir_node *irn); +ir_node *be_get_Spill_frame(const ir_node *irn); + +void be_set_MemPerm_in_entity(const ir_node *irn, int n, ir_entity* ent); +ir_entity *be_get_MemPerm_in_entity(const ir_node *irn, int n); + +void be_set_MemPerm_out_entity(const ir_node *irn, int n, ir_entity* ent); +ir_entity *be_get_MemPerm_out_entity(const ir_node *irn, int n); -void be_set_Spill_entity(ir_node *irn, entity *ent); -entity *be_get_spill_entity(ir_node *irn); +int be_get_MemPerm_entity_arity(const ir_node *irn); -ir_node *be_get_Spill_context(const ir_node *irn); +/** + * Impose a register constraint on a backend node. + * @param irn The node. + * @param pos The position of the argument/result. Results range from -1..-m and arguments form 0..n + * @param reg The register which is admissible for that node, argument/result and position. + */ +void be_set_constr_single_reg(ir_node *irn, int pos, const arch_register_t *reg); +/** + * Impose register constraints on a backend node. + * The register subsets given by the limited function in @p req are copied to the backend node. + * This requires that the constraint type of the @p req is arch_register_req_type_limited. + * @param irn The backend node. + * @param pos The position (@see be_set_constr_single_reg()). + * @param req The register requirements which shall be transferred. + */ +void be_set_constr_limited(ir_node *irn, int pos, const arch_register_req_t *req); /** - * Modify the output register requirements of a Perm. - * This function incur register constraints to an output value of a Perm. - * This is used when handling register constraints in general, - * see beconstrperm.c - * @param irn The perm node. - * @param pos The position. - * @param req The requirements to set to. - * @param negate_limited When the requirements are limited, inverse the set of admissible registers. + * Set the flags of a node. + * @param irn The node itself. + * @param pos The position (0..n) for arguments, (-1..-m) for results. + * @param flags The flags to set for that node and position. + */ +void be_node_set_flags(ir_node *irn, int pos, arch_irn_flags_t flags); + +/** + * Set the register class of a node. + * @param irn The node itself. + * @param pos The position (0..n) for arguments, (-1..-m) for results. + * @param flags The register class to set for that node and position. + */ +void be_node_set_reg_class(ir_node *irn, int pos, const arch_register_class_t *cls); + +/** + * Set the register requirement type of a node. + * @param irn The node itself. + * @param pos The position (0..n) for arguments, (-1..-m) for results. + * @param flags The register requirement type to set for that node and position. + */ +void be_node_set_req_type(ir_node *irn, int pos, arch_register_req_type_t type); + +/** + * Make a new phi handler. + * @param env The architecture environment. + * @return A new phi handler. + */ +arch_irn_handler_t *be_phi_handler_new(const arch_env_t *arch_env); + +/** + * Free a phi handler. + * @param handler The handler to free. + */ +void be_phi_handler_free(arch_irn_handler_t *handler); + +/** + * Reset the register data in the phi handler. + * This should be called on each new graph and deletes the register information of the current graph. + */ +void be_phi_handler_reset(arch_irn_handler_t *handler); + +/** + * Set the register requirements for a phi node. + */ +void be_set_phi_reg_req(const arch_env_t *arch_env, ir_node *phi, + const arch_register_req_t *req); + +/* + * Set flags for a phi node */ -void be_set_Perm_out_req(ir_node *irn, int pos, const arch_register_req_t *req, unsigned negate_limited); +void be_set_phi_flags(const arch_env_t *arch_env, ir_node *phi, + arch_irn_flags_t flags); /** - * Insert a Perm node after a specific node in the schedule. - * The Perm permutes over all values live at the given node. - * This means that all liveness intervals are cut apart at this - * location in the program. + * irn handler for common be nodes. */ -ir_node *insert_Perm_after(const arch_env_t *env, - const arch_register_class_t *cls, - dom_front_info_t *dom_front, - ir_node *pos); +extern const arch_irn_handler_t be_node_irn_handler; -#endif /* _BENODE_T_H */ +#endif /* FIRM_BE_BENODE_T_H */