diff options
Diffstat (limited to 'gcc/reload.h')
| -rw-r--r-- | gcc/reload.h | 96 |
1 files changed, 47 insertions, 49 deletions
diff --git a/gcc/reload.h b/gcc/reload.h index b163339d9b4..9a5e33c843a 100644 --- a/gcc/reload.h +++ b/gcc/reload.h @@ -44,7 +44,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #define MEMORY_MOVE_COST(MODE,CLASS,IN) 4 #endif #endif -extern int memory_move_secondary_cost PARAMS ((enum machine_mode, enum reg_class, int)); +extern int memory_move_secondary_cost (enum machine_mode, enum reg_class, int); /* Maximum number of reloads we can need. */ #define MAX_RELOADS (2 * MAX_RECOG_OPERANDS * (MAX_REGS_PER_ADDRESS + 1)) @@ -68,14 +68,14 @@ extern int memory_move_secondary_cost PARAMS ((enum machine_mode, enum reg_class reloads; usually secondary reloads RELOAD_OTHER none of the above, usually multiple uses RELOAD_FOR_OTHER_ADDRESS reload for part of the address of an input - that is marked RELOAD_OTHER. + that is marked RELOAD_OTHER. This used to be "enum reload_when_needed" but some debuggers have trouble with an enum tag and variable of the same name. */ enum reload_type { - RELOAD_FOR_INPUT, RELOAD_FOR_OUTPUT, RELOAD_FOR_INSN, + RELOAD_FOR_INPUT, RELOAD_FOR_OUTPUT, RELOAD_FOR_INSN, RELOAD_FOR_INPUT_ADDRESS, RELOAD_FOR_INPADDR_ADDRESS, RELOAD_FOR_OUTPUT_ADDRESS, RELOAD_FOR_OUTADDR_ADDRESS, RELOAD_FOR_OPERAND_ADDRESS, RELOAD_FOR_OPADDR_ADDR, @@ -147,7 +147,7 @@ struct reload addressing an output, for addressing a non-reloaded mem ref, or for unspecified purposes (i.e., more than one of the above). */ enum reload_type when_needed; - + /* Nonzero for an optional reload. Optional reloads are ignored unless the value is already sitting in a register. */ unsigned int optional:1; @@ -203,7 +203,7 @@ struct needs /* This structure describes instructions which are relevant for reload. Apart from all regular insns, this also includes CODE_LABELs, since they must be examined for register elimination. */ -struct insn_chain +struct insn_chain { /* Links to the neighbor instructions. */ struct insn_chain *next, *prev; @@ -247,146 +247,144 @@ struct insn_chain extern struct insn_chain *reload_insn_chain; /* Allocate a new insn_chain structure. */ -extern struct insn_chain *new_insn_chain PARAMS ((void)); +extern struct insn_chain *new_insn_chain (void); -extern void compute_use_by_pseudos PARAMS ((HARD_REG_SET *, regset)); +extern void compute_use_by_pseudos (HARD_REG_SET *, regset); #endif /* Functions from reload.c: */ -/* Return a memory location that will be used to copy X in mode MODE. +/* Return a memory location that will be used to copy X in mode MODE. If we haven't already made a location for this mode in this insn, call find_reloads_address on the location being returned. */ -extern rtx get_secondary_mem PARAMS ((rtx, enum machine_mode, - int, enum reload_type)); +extern rtx get_secondary_mem (rtx, enum machine_mode, int, enum reload_type); /* Clear any secondary memory locations we've made. */ -extern void clear_secondary_mem PARAMS ((void)); +extern void clear_secondary_mem (void); /* Transfer all replacements that used to be in reload FROM to be in reload TO. */ -extern void transfer_replacements PARAMS ((int, int)); +extern void transfer_replacements (int, int); /* IN_RTX is the value loaded by a reload that we now decided to inherit, or a subpart of it. If we have any replacements registered for IN_RTX, cancel the reloads that were supposed to load them. Return nonzero if we canceled any reloads. */ -extern int remove_address_replacements PARAMS ((rtx in_rtx)); +extern int remove_address_replacements (rtx in_rtx); /* Like rtx_equal_p except that it allows a REG and a SUBREG to match if they are the same hard reg, and has special hacks for autoincrement and autodecrement. */ -extern int operands_match_p PARAMS ((rtx, rtx)); +extern int operands_match_p (rtx, rtx); /* Return 1 if altering OP will not modify the value of CLOBBER. */ -extern int safe_from_earlyclobber PARAMS ((rtx, rtx)); +extern int safe_from_earlyclobber (rtx, rtx); /* Search the body of INSN for values that need reloading and record them with push_reload. REPLACE nonzero means record also where the values occur so that subst_reloads can be used. */ -extern int find_reloads PARAMS ((rtx, int, int, int, short *)); +extern int find_reloads (rtx, int, int, int, short *); /* Compute the sum of X and Y, making canonicalizations assumed in an address, namely: sum constant integers, surround the sum of two constants with a CONST, put the constant as the second operand, and group the constant on the outermost sum. */ -extern rtx form_sum PARAMS ((rtx, rtx)); +extern rtx form_sum (rtx, rtx); /* Substitute into the current INSN the registers into which we have reloaded the things that need reloading. */ -extern void subst_reloads PARAMS ((rtx)); +extern void subst_reloads (rtx); /* Make a copy of any replacements being done into X and move those copies to locations in Y, a copy of X. We only look at the highest level of the RTL. */ -extern void copy_replacements PARAMS ((rtx, rtx)); +extern void copy_replacements (rtx, rtx); /* Change any replacements being done to *X to be done to *Y */ -extern void move_replacements PARAMS ((rtx *x, rtx *y)); +extern void move_replacements (rtx *x, rtx *y); /* If LOC was scheduled to be replaced by something, return the replacement. Otherwise, return *LOC. */ -extern rtx find_replacement PARAMS ((rtx *)); +extern rtx find_replacement (rtx *); /* Return nonzero if register in range [REGNO, ENDREGNO) appears either explicitly or implicitly in X other than being stored into. */ -extern int refers_to_regno_for_reload_p PARAMS ((unsigned int, unsigned int, - rtx, rtx *)); +extern int refers_to_regno_for_reload_p (unsigned int, unsigned int, + rtx, rtx *); /* Nonzero if modifying X will affect IN. */ -extern int reg_overlap_mentioned_for_reload_p PARAMS ((rtx, rtx)); +extern int reg_overlap_mentioned_for_reload_p (rtx, rtx); /* Return nonzero if anything in X contains a MEM. Look also for pseudo registers. */ -extern int refers_to_mem_for_reload_p PARAMS ((rtx)); +extern int refers_to_mem_for_reload_p (rtx); /* Check the insns before INSN to see if there is a suitable register containing the same value as GOAL. */ -extern rtx find_equiv_reg PARAMS ((rtx, rtx, enum reg_class, int, short *, - int, enum machine_mode)); +extern rtx find_equiv_reg (rtx, rtx, enum reg_class, int, short *, + int, enum machine_mode); /* Return 1 if register REGNO is the subject of a clobber in insn INSN. */ -extern int regno_clobbered_p PARAMS ((unsigned int, rtx, enum machine_mode, - int)); +extern int regno_clobbered_p (unsigned int, rtx, enum machine_mode, int); /* Return 1 if X is an operand of an insn that is being earlyclobbered. */ -extern int earlyclobber_operand_p PARAMS ((rtx)); +extern int earlyclobber_operand_p (rtx); /* Record one reload that needs to be performed. */ -extern int push_reload PARAMS ((rtx, rtx, rtx *, rtx *, enum reg_class, - enum machine_mode, enum machine_mode, - int, int, int, enum reload_type)); +extern int push_reload (rtx, rtx, rtx *, rtx *, enum reg_class, + enum machine_mode, enum machine_mode, + int, int, int, enum reload_type); /* Functions in postreload.c: */ -extern void reload_cse_regs PARAMS ((rtx)); +extern void reload_cse_regs (rtx); /* Functions in reload1.c: */ -extern int reloads_conflict PARAMS ((int, int)); +extern int reloads_conflict (int, int); /* Initialize the reload pass once per compilation. */ -extern void init_reload PARAMS ((void)); +extern void init_reload (void); /* The reload pass itself. */ -extern int reload PARAMS ((rtx, int)); +extern int reload (rtx, int); /* Mark the slots in regs_ever_live for the hard regs used by pseudo-reg number REGNO. */ -extern void mark_home_live PARAMS ((int)); +extern void mark_home_live (int); /* Scan X and replace any eliminable registers (such as fp) with a replacement (such as sp), plus an offset. */ -extern rtx eliminate_regs PARAMS ((rtx, enum machine_mode, rtx)); +extern rtx eliminate_regs (rtx, enum machine_mode, rtx); /* Emit code to perform a reload from IN (which may be a reload register) to OUT (which may also be a reload register). IN or OUT is from operand OPNUM with reload type TYPE. */ -extern rtx gen_reload PARAMS ((rtx, rtx, int, enum reload_type)); +extern rtx gen_reload (rtx, rtx, int, enum reload_type); /* Deallocate the reload register used by reload number R. */ -extern void deallocate_reload_reg PARAMS ((int r)); +extern void deallocate_reload_reg (int r); /* Functions in caller-save.c: */ /* Initialize for caller-save. */ -extern void init_caller_save PARAMS ((void)); +extern void init_caller_save (void); /* Initialize save areas by showing that we haven't allocated any yet. */ -extern void init_save_areas PARAMS ((void)); +extern void init_save_areas (void); /* Allocate save areas for any hard registers that might need saving. */ -extern void setup_save_areas PARAMS ((void)); +extern void setup_save_areas (void); /* Find the places where hard regs are live across calls and save them. */ -extern void save_call_clobbered_regs PARAMS ((void)); +extern void save_call_clobbered_regs (void); /* Replace (subreg (reg)) with the appropriate (reg) for any operands. */ -extern void cleanup_subreg_operands PARAMS ((rtx)); +extern void cleanup_subreg_operands (rtx); /* Debugging support. */ -extern void debug_reload_to_stream PARAMS ((FILE *)); -extern void debug_reload PARAMS ((void)); +extern void debug_reload_to_stream (FILE *); +extern void debug_reload (void); /* Compute the actual register we should reload to, in case we're reloading to/from a register that is wider than a word. */ -extern rtx reload_adjust_reg_for_mode PARAMS ((rtx, enum machine_mode)); +extern rtx reload_adjust_reg_for_mode (rtx, enum machine_mode); |