/* Form lists of pseudo register references for autoinc optimization
for GNU compiler. This is part of flow optimization.
- Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008
+ Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Originally contributed by Michael P. Hayes
(m.hayes@elec.canterbury.ac.nz, mhayes@redhat.com)
#include "bitmap.h"
#include "basic-block.h"
#include "alloc-pool.h"
+#include "timevar.h"
struct dataflow;
struct df;
struct df_problem *dependent_problem;
/* The timevar id associated with this pass. */
- unsigned int tv_id;
+ timevar_id_t tv_id;
/* True if the df_set_blocks should null out the basic block info if
this block drops out of df->blocks_to_analyze. */
accesses to 16-bit fields will usually be quicker. */
ENUM_BITFIELD(df_ref_type) type : 16;
/* Used to see if the ref is read or write. */
- ENUM_BITFIELD(df_ref_flags) flags : 16;
- /* Various flags. */
+ int flags : 16; /* Various df_ref_flags. */
unsigned int start_regno; /* First word of the multi word subreg. */
unsigned int end_regno; /* Last word of the multi word subreg. */
unsigned int mw_order; /* Same as df_ref.ref_order. */
ENUM_BITFIELD(df_ref_type) type : 8;
/* Type of ref. */
- ENUM_BITFIELD(df_ref_flags) flags : 16;
- /* Various flags. */
+ int flags : 16; /* Various df_ref_flags. */
rtx reg; /* The register referenced. */
struct df_link *chain; /* Head of def-use, use-def. */
/* Pointer to the insn info of the containing instruction. FIXME!
struct dataflow *problems_in_order[DF_LAST_PROBLEM_PLUS1];
struct dataflow *problems_by_index[DF_LAST_PROBLEM_PLUS1];
- int num_problems_defined;
/* If not NULL, this subset of blocks of the program to be
considered for analysis. At certain times, this will contain all
of if we are analyzing a subset. See analyze_subset. */
bitmap blocks_to_analyze;
- /* If this is true, then only a subset of the blocks of the program
- is considered to compute the solutions of dataflow problems. */
- bool analyze_subset;
-
- /* True if someone added or deleted something from regs_ever_live so
- that the entry and exit blocks need be reprocessed. */
- bool redo_entry_and_exit;
-
/* The following information is really the problem data for the
scanning instance but it is used too often by the other problems
to keep getting it from there. */
struct df_insn_info **insns; /* Insn table, indexed by insn UID. */
unsigned int insns_size; /* Size of insn table. */
+
+ int num_problems_defined;
+
bitmap hardware_regs_used; /* The set of hardware registers used. */
/* The set of hard regs that are in the artificial uses at the end
of a regular basic block. */
addresses. It is incremented whenever a ref is created. */
unsigned int ref_order;
- /* Problem specific control information. */
- enum df_changeable_flags changeable_flags;
+ /* Problem specific control information. This is a combination of
+ enum df_changeable_flags values. */
+ int changeable_flags : 8;
+
+ /* If this is true, then only a subset of the blocks of the program
+ is considered to compute the solutions of dataflow problems. */
+ bool analyze_subset;
+
+ /* True if someone added or deleted something from regs_ever_live so
+ that the entry and exit blocks need be reprocessed. */
+ bool redo_entry_and_exit;
};
#define DF_SCAN_BB_INFO(BB) (df_scan_get_bb_info((BB)->index))
/* Functions defined in df-core.c. */
extern void df_add_problem (struct df_problem *);
-extern enum df_changeable_flags df_set_flags (enum df_changeable_flags);
-extern enum df_changeable_flags df_clear_flags (enum df_changeable_flags);
+extern int df_set_flags (int);
+extern int df_clear_flags (int);
extern void df_set_blocks (bitmap);
extern void df_remove_problem (struct dataflow *);
extern void df_finish_pass (bool);
extern void df_chain_dump (struct df_link *, FILE *);
extern void df_print_bb_index (basic_block bb, FILE *file);
extern void df_rd_add_problem (void);
+extern void df_rd_simulate_artificial_defs_at_top (basic_block, bitmap);
+extern void df_rd_simulate_one_insn (basic_block, rtx, bitmap);
extern void df_lr_add_problem (void);
extern void df_lr_verify_transfer_functions (void);
extern void df_live_verify_transfer_functions (void);
extern void df_live_add_problem (void);
extern void df_live_set_all_dirty (void);
-extern void df_chain_add_problem (enum df_chain_flags);
+extern void df_chain_add_problem (unsigned int);
extern void df_byte_lr_add_problem (void);
extern int df_byte_lr_get_regno_start (unsigned int);
extern int df_byte_lr_get_regno_len (unsigned int);
extern void df_grow_insn_info (void);
extern void df_scan_blocks (void);
extern df_ref df_ref_create (rtx, rtx *, rtx,basic_block,
- enum df_ref_type, enum df_ref_flags,
+ enum df_ref_type, int ref_flags,
int, int, enum machine_mode);
extern void df_ref_remove (df_ref);
extern struct df_insn_info * df_insn_create_insn_record (rtx);
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