/* Register Transfer Language (RTL) definitions for GCC
Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
This file is part of GCC.
-1 means this instruction has not been recognized yet. */
#define INSN_CODE(INSN) XINT (INSN, 6)
-/* Set up in flow.c; empty before then.
- Holds a chain of INSN_LIST rtx's whose first operands point at
- previous insns with direct data-flow connections to this one.
- That means that those insns set variables whose next use is in this insn.
- They are always in the same basic block as this insn. */
-#define LOG_LINKS(INSN) XEXP(INSN, 7)
-
#define RTX_FRAME_RELATED_P(RTX) \
(RTL_FLAG_CHECK5("RTX_FRAME_RELATED_P", (RTX), INSN, CALL_INSN, \
JUMP_INSN, BARRIER, SET)->frame_related)
chain pointer and the first operand is the REG being described.
The mode field of the EXPR_LIST contains not a real machine mode
but a value from enum reg_note. */
-#define REG_NOTES(INSN) XEXP(INSN, 8)
+#define REG_NOTES(INSN) XEXP(INSN, 7)
enum reg_note
{
CLOBBER expressions document the registers explicitly clobbered
by this CALL_INSN.
Pseudo registers can not be mentioned in this list. */
-#define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 9)
+#define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 8)
/* The label-number of a code-label. The assembler label
is made from `L' and the label-number printed in decimal.
/* Opaque data. */
#define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE)
#define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE)
-#ifdef USE_MAPPED_LOCATION
-#define NOTE_SOURCE_LOCATION(INSN) XCUINT (INSN, 5, NOTE)
-#define NOTE_EXPANDED_LOCATION(XLOC, INSN) \
- (XLOC) = expand_location (NOTE_SOURCE_LOCATION (INSN))
-#define SET_INSN_DELETED(INSN) \
- (PUT_CODE (INSN, NOTE), NOTE_LINE_NUMBER (INSN) = NOTE_INSN_DELETED)
-#else
-#define NOTE_EXPANDED_LOCATION(XLOC, INSN) \
- ((XLOC).file = NOTE_SOURCE_FILE (INSN), \
- (XLOC).line = NOTE_LINE_NUMBER (INSN))
-#define NOTE_SOURCE_FILE(INSN) XCSTR (INSN, 4, NOTE)
-#define SET_INSN_DELETED(INSN) \
- (PUT_CODE (INSN, NOTE), NOTE_SOURCE_FILE (INSN) = 0, \
- NOTE_LINE_NUMBER (INSN) = NOTE_INSN_DELETED)
-#endif
+#define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
#define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE)
#define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE)
#define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE)
/* In a NOTE that is a line number, this is the line number.
Other kinds of NOTEs are identified by negative numbers here. */
-#define NOTE_LINE_NUMBER(INSN) XCINT (INSN, 5, NOTE)
+#define NOTE_KIND(INSN) XCINT (INSN, 5, NOTE)
/* Nonzero if INSN is a note marking the beginning of a basic block. */
#define NOTE_INSN_BASIC_BLOCK_P(INSN) \
(GET_CODE (INSN) == NOTE \
- && NOTE_LINE_NUMBER (INSN) == NOTE_INSN_BASIC_BLOCK)
+ && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
/* Variable declaration and the location of a variable. */
#define NOTE_VAR_LOCATION_DECL(INSN) (XCTREE (XCEXP (INSN, 4, NOTE), \
#define NOTE_VAR_LOCATION_LOC(INSN) (XCEXP (XCEXP (INSN, 4, NOTE), \
1, VAR_LOCATION))
-/* Codes that appear in the NOTE_LINE_NUMBER field for kinds of notes
+/* Initialization status of the variable in the location. Status
+ can be unknown, uninitialized or initialized. See enumeration
+ type below. */
+#define NOTE_VAR_LOCATION_STATUS(INSN) (XCINT (XCEXP (INSN, 4, NOTE), \
+ 2, VAR_LOCATION))
+
+/* Possible initialization status of a variable. When requested
+ by the user, this information is tracked and recorded in the DWARF
+ debug information, along with the variable's location. */
+enum var_init_status
+{
+ VAR_INIT_STATUS_UNKNOWN,
+ VAR_INIT_STATUS_UNINITIALIZED,
+ VAR_INIT_STATUS_INITIALIZED
+};
+
+/* Codes that appear in the NOTE_KIND field for kinds of notes
that are not line numbers. These codes are all negative.
Notice that we do not try to use zero here for any of
enum insn_note
{
- /* Keep all of these numbers negative. Adjust as needed. */
- NOTE_INSN_BIAS = -100,
-
#define DEF_INSN_NOTE(NAME) NAME,
#include "insn-notes.def"
#undef DEF_INSN_NOTE
/* Names for NOTE insn's other than line numbers. */
-extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS];
+extern const char * const note_insn_name[NOTE_INSN_MAX];
#define GET_NOTE_INSN_NAME(NOTE_CODE) \
- (note_insn_name[(NOTE_CODE) - (int) NOTE_INSN_BIAS])
+ (note_insn_name[(NOTE_CODE)])
/* The name of a label, in case it corresponds to an explicit label
in the input source code. */
/* In jump.c, each JUMP_INSN can point to a label that it can jump to,
so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
be decremented and possibly the label can be deleted. */
-#define JUMP_LABEL(INSN) XCEXP (INSN, 9, JUMP_INSN)
+#define JUMP_LABEL(INSN) XCEXP (INSN, 8, JUMP_INSN)
-/* Once basic blocks are found in flow.c,
- each CODE_LABEL starts a chain that goes through
- all the LABEL_REFs that jump to that label.
- The chain eventually winds up at the CODE_LABEL: it is circular. */
+/* Once basic blocks are found, each CODE_LABEL starts a chain that
+ goes through all the LABEL_REFs that jump to that label. The chain
+ eventually winds up at the CODE_LABEL: it is circular. */
#define LABEL_REFS(LABEL) XCEXP (LABEL, 5, CODE_LABEL)
\f
-/* For a REG rtx, REGNO extracts the register number. ORIGINAL_REGNO holds
- the number the register originally had; for a pseudo register turned into
- a hard reg this will hold the old pseudo register number. */
-
-#define REGNO(RTX) XCUINT (RTX, 0, REG)
+/* For a REG rtx, REGNO extracts the register number. REGNO can only
+ be used on RHS. Use SET_REGNO to change the value. */
+#define REGNO(RTX) (rhs_regno(RTX))
+#define SET_REGNO(RTX,N) (df_ref_change_reg_with_loc (REGNO(RTX), N, RTX), XCUINT (RTX, 0, REG) = N)
+
+/* ORIGINAL_REGNO holds the number the register originally had; for a
+ pseudo register turned into a hard reg this will hold the old pseudo
+ register number. */
#define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1)
+/* Force the REGNO macro to only be used on the lhs. */
+static inline unsigned int
+rhs_regno (rtx x)
+{
+ return XCUINT (x, 0, REG);
+}
+
+
+
/* 1 if RTX is a reg or parallel that is the current function's return
value. */
#define REG_FUNCTION_VALUE_P(RTX) \
GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
#ifdef USE_MAPPED_LOCATION
#define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 5, ASM_OPERANDS)
+#define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
#else
#define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR (RTX, 5, ASM_OPERANDS)
#define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT (RTX, 6, ASM_OPERANDS)
+#define ASM_INPUT_SOURCE_FILE(RTX) XCSTR (RTX, 1, ASM_INPUT)
+#define ASM_INPUT_SOURCE_LINE(RTX) XCINT (RTX, 2, ASM_INPUT)
#endif
/* 1 if RTX is a mem that is statically allocated in read-only memory. */
offset within that block. */
#define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
+/* Indicate whether the machine has any sort of auto increment addressing.
+ If not, we can avoid checking for REG_INC notes. */
+
+#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
+ || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
+ || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_PRE_MODIFY_DISP) \
+ || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
+#define AUTO_INC_DEC
+#endif
+
/* Define a macro to look for REG_INC notes,
but save time on machines where they never exist. */
-#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
+#ifdef AUTO_INC_DEC
#define FIND_REG_INC_NOTE(INSN, REG) \
((REG) != NULL_RTX && REG_P ((REG)) \
? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
#define FIND_REG_INC_NOTE(INSN, REG) 0
#endif
-/* Indicate whether the machine has any sort of auto increment addressing.
- If not, we can avoid checking for REG_INC notes. */
-
-#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
-#define AUTO_INC_DEC
-#endif
-
#ifndef HAVE_PRE_INCREMENT
#define HAVE_PRE_INCREMENT 0
#endif
extern rtx plus_constant (rtx, HOST_WIDE_INT);
/* In emit-rtl.c */
+extern rtx gen_blockage (void);
extern rtvec gen_rtvec (int, ...);
extern rtx copy_insn_1 (rtx);
extern rtx copy_insn (rtx);
#define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
extern rtvec rtvec_alloc (int);
+extern bool shared_const_p (rtx);
extern rtx copy_rtx (rtx);
extern void dump_rtx_statistics (void);
extern rtvec gen_rtvec_v (int, rtx *);
extern rtx gen_reg_rtx (enum machine_mode);
extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int);
+extern rtx gen_reg_rtx_offset (rtx, enum machine_mode, int);
extern rtx gen_label_rtx (void);
extern rtx gen_lowpart_common (enum machine_mode, rtx);
extern rtx get_last_nonnote_insn (void);
extern void start_sequence (void);
extern void push_to_sequence (rtx);
+extern void push_to_sequence2 (rtx, rtx);
extern void end_sequence (void);
extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT,
enum machine_mode);
/* In emit-rtl.c */
extern rtx emit_insn_before (rtx, rtx);
-extern rtx emit_insn_before_noloc (rtx, rtx);
+extern rtx emit_insn_before_noloc (rtx, rtx, struct basic_block_def *);
extern rtx emit_insn_before_setloc (rtx, rtx, int);
extern rtx emit_jump_insn_before (rtx, rtx);
extern rtx emit_jump_insn_before_noloc (rtx, rtx);
extern rtx emit_call_insn_before_setloc (rtx, rtx, int);
extern rtx emit_barrier_before (rtx);
extern rtx emit_label_before (rtx, rtx);
-extern rtx emit_note_before (int, rtx);
+extern rtx emit_note_before (enum insn_note, rtx);
extern rtx emit_insn_after (rtx, rtx);
-extern rtx emit_insn_after_noloc (rtx, rtx);
+extern rtx emit_insn_after_noloc (rtx, rtx, struct basic_block_def *);
extern rtx emit_insn_after_setloc (rtx, rtx, int);
extern rtx emit_jump_insn_after (rtx, rtx);
extern rtx emit_jump_insn_after_noloc (rtx, rtx);
extern rtx emit_call_insn_after_setloc (rtx, rtx, int);
extern rtx emit_barrier_after (rtx);
extern rtx emit_label_after (rtx, rtx);
-extern rtx emit_note_after (int, rtx);
+extern rtx emit_note_after (enum insn_note, rtx);
extern rtx emit_insn (rtx);
extern rtx emit_jump_insn (rtx);
extern rtx emit_call_insn (rtx);
extern rtx emit_label (rtx);
extern rtx emit_barrier (void);
-extern rtx emit_note (int);
+extern rtx emit_note (enum insn_note);
extern rtx emit_note_copy (rtx);
-extern rtx emit_line_note (location_t);
extern rtx make_insn_raw (rtx);
extern rtx make_jump_insn_raw (rtx);
extern void add_function_usage_to (rtx, rtx);
extern unsigned int cleanup_barriers (void);
/* In jump.c */
-extern bool squeeze_notes (rtx *, rtx *);
extern rtx delete_related_insns (rtx);
-extern void delete_jump (rtx);
-extern rtx get_label_before (rtx);
-extern rtx get_label_after (rtx);
-extern rtx follow_jumps (rtx);
/* In recog.c */
extern rtx *find_constant_term_loc (rtx *);
extern rtx simplify_replace_rtx (rtx, rtx, rtx);
extern rtx simplify_rtx (rtx);
extern rtx avoid_constant_pool_reference (rtx);
-extern bool constant_pool_reference_p (rtx x);
extern bool mode_signbit_p (enum machine_mode, rtx);
/* In regclass.c */
/* In emit-rtl.c */
extern rtx set_unique_reg_note (rtx, enum reg_note, rtx);
+extern void set_insn_deleted (rtx);
/* Functions in rtlanal.c */
extern int rtx_addr_varies_p (rtx, int);
extern HOST_WIDE_INT get_integer_term (rtx);
extern rtx get_related_value (rtx);
+extern bool offset_within_block_p (rtx, HOST_WIDE_INT);
+extern void split_const (rtx, rtx *, rtx *);
extern int reg_mentioned_p (rtx, rtx);
extern int count_occurrences (rtx, rtx, int);
extern int reg_referenced_p (rtx, rtx);
extern int reg_used_between_p (rtx, rtx, rtx);
extern int reg_set_between_p (rtx, rtx, rtx);
extern int commutative_operand_precedence (rtx);
-extern int swap_commutative_operands_p (rtx, rtx);
+extern bool swap_commutative_operands_p (rtx, rtx);
extern int modified_between_p (rtx, rtx, rtx);
extern int no_labels_between_p (rtx, rtx);
extern int modified_in_p (rtx, rtx);
extern rtx find_reg_note (rtx, enum reg_note, rtx);
extern rtx find_regno_note (rtx, enum reg_note, unsigned int);
extern rtx find_reg_equal_equiv_note (rtx);
+extern rtx find_constant_src (rtx);
extern int find_reg_fusage (rtx, enum rtx_code, rtx);
extern int find_regno_fusage (rtx, enum rtx_code, unsigned int);
extern int pure_call_p (rtx);
extern void remove_note (rtx, rtx);
+extern void remove_reg_equal_equiv_notes (rtx);
extern int side_effects_p (rtx);
extern int volatile_refs_p (rtx);
extern int volatile_insn_p (rtx);
being made. */
extern rtx get_condition (rtx, rtx *, int, int);
-
-/* flow.c */
-
-extern rtx find_use_as_address (rtx, rtx, HOST_WIDE_INT);
-
/* lists.c */
void free_EXPR_LIST_list (rtx *);
void free_INSN_LIST_node (rtx);
rtx alloc_INSN_LIST (rtx, rtx);
rtx alloc_EXPR_LIST (int, rtx, rtx);
-void free_DEPS_LIST_list (rtx *);
-rtx alloc_DEPS_LIST (rtx, rtx, int);
-void remove_free_DEPS_LIST_elem (rtx, rtx *);
void remove_free_INSN_LIST_elem (rtx, rtx *);
rtx remove_list_elem (rtx, rtx *);
-rtx copy_DEPS_LIST_list (rtx);
/* regclass.c */
-/* Maximum number of parallel sets and clobbers in any insn in this fn.
- Always at least 3, since the combiner could put that many together
- and we want this to remain correct for all the remaining passes. */
-
-extern int max_parallel;
-
/* Free up register info memory. */
extern void free_reg_info (void);
/* recog.c */
extern int asm_noperands (rtx);
extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **,
- enum machine_mode *);
+ enum machine_mode *, location_t *);
extern enum reg_class reg_preferred_class (int);
extern enum reg_class reg_alternate_class (int);
-extern void split_all_insns (int);
+extern void split_all_insns (void);
extern unsigned int split_all_insns_noflow (void);
#define MAX_SAVED_CONST_INT 64
#ifndef GENERATOR_FILE
#include "genrtl.h"
-#ifndef USE_MAPPED_LOCATION
+#undef gen_rtx_ASM_INPUT
+#ifdef USE_MAPPED_LOCATION
+#define gen_rtx_ASM_INPUT(MODE, ARG0) \
+ gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
+#define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
+ gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
+#else
+#define gen_rtx_ASM_INPUT(MODE, ARG0) \
+ gen_rtx_fmt_ssi (ASM_INPUT, (MODE), (ARG0), "", 0)
+#define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
+ gen_rtx_fmt_ssi (ASM_INPUT, (MODE), (ARG0), (LOC).file, (LOC).line)
#undef gen_rtx_ASM_OPERANDS
#define gen_rtx_ASM_OPERANDS(MODE, ARG0, ARG1, ARG2, ARG3, ARG4, LOC) \
gen_rtx_fmt_ssiEEsi (ASM_OPERANDS, (MODE), (ARG0), (ARG1), (ARG2), (ARG3), (ARG4), (LOC).file, (LOC).line)
extern rtx output_constant_def (tree, int);
extern rtx lookup_constant_def (tree);
-/* Nonzero after the second flow pass has completed.
- Set to 1 or 0 by toplev.c */
-extern int flow2_completed;
-
/* Nonzero after end of reload pass.
Set to 1 or 0 by reload1.c. */
extern int reload_in_progress;
+/* This macro indicates whether you may create a new
+ pseudo-register. */
+
+#define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
+
#ifdef STACK_REGS
/* Nonzero after end of regstack pass.
Set to 1 or 0 by reg-stack.c. */
the same indirect address eventually. */
extern int cse_not_expected;
-/* Set to nonzero before life analysis to indicate that it is unsafe to
- generate any new pseudo registers. */
-extern int no_new_pseudos;
-
/* Translates rtx code to tree code, for those codes needed by
REAL_ARITHMETIC. The function returns an int because the caller may not
know what `enum tree_code' means. */
extern void set_last_insn (rtx);
extern void link_cc0_insns (rtx);
extern void add_insn (rtx);
-extern void add_insn_before (rtx, rtx);
-extern void add_insn_after (rtx, rtx);
+extern void add_insn_before (rtx, rtx, struct basic_block_def *);
+extern void add_insn_after (rtx, rtx, struct basic_block_def *);
extern void remove_insn (rtx);
extern rtx emit (rtx);
-extern void renumber_insns (void);
extern rtx delete_insn (rtx);
extern rtx entry_of_function (void);
extern void emit_insn_at_entry (rtx);
-extern void delete_insn_chain (rtx, rtx);
+extern void delete_insn_chain (rtx, rtx, bool);
extern rtx unlink_insn_chain (rtx, rtx);
extern rtx delete_insn_and_edges (rtx);
-extern void delete_insn_chain_and_edges (rtx, rtx);
extern rtx gen_lowpart_SUBREG (enum machine_mode, rtx);
extern rtx gen_const_mem (enum machine_mode, rtx);
extern rtx gen_frame_mem (enum machine_mode, rtx);
extern bool validate_subreg (enum machine_mode, enum machine_mode,
rtx, unsigned int);
-/* In combine.c */
+/* In combine.c */
extern unsigned int extended_count (rtx, enum machine_mode, int);
extern rtx remove_death (unsigned int, rtx);
extern void dump_combine_stats (FILE *);
extern void dump_combine_total_stats (FILE *);
+/* In cfgcleanup.c */
+extern void delete_dead_jumptables (void);
+
/* In sched-vis.c. */
extern void print_rtl_slim_with_bb (FILE *, rtx, int);
extern void dump_insn_slim (FILE *f, rtx x);
extern int print_rtl_single (FILE *, rtx);
extern void print_inline_rtx (FILE *, rtx, int);
-/* In bt-load.c */
-extern void branch_target_load_optimize (bool);
-
/* In function.c */
-extern void reposition_prologue_and_epilogue_notes (rtx);
-extern void thread_prologue_and_epilogue_insns (rtx);
+extern void reposition_prologue_and_epilogue_notes (void);
extern int prologue_epilogue_contains (rtx);
extern int sibcall_epilogue_contains (rtx);
extern void mark_temp_addr_taken (rtx);
extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
unsigned int, int);
-/* In flow.c */
-extern void delete_dead_jumptables (void);
+/* In cfgrtl.c */
extern void print_rtl_with_bb (FILE *, rtx);
+
+/* In cfg.c. */
+extern void dump_reg_info (FILE *);
extern void dump_flow_info (FILE *, int);
/* In expmed.c */
extern void init_regs (void);
extern void init_fake_stack_mems (void);
extern void init_reg_sets (void);
-extern void regclass_init (void);
extern void regclass (rtx, int);
extern void reg_scan (rtx, unsigned int);
extern void fix_register (const char *, int, int);
-extern void init_subregs_of_mode (void);
-extern void record_subregs_of_mode (rtx);
#ifdef HARD_CONST
extern void cannot_change_mode_set_regs (HARD_REG_SET *,
enum machine_mode, unsigned int);
extern int read_rtx_lineno;
/* In alias.c */
-extern void clear_reg_alias_info (rtx);
extern rtx canon_rtx (rtx);
extern int true_dependence (rtx, enum machine_mode, rtx, int (*)(rtx, int));
extern rtx get_addr (rtx);
/* In cfgexpand.c */
extern void add_reg_br_prob_note (rtx last, int probability);
/* In tracer.c */
-extern void tracer (unsigned int);
+extern void tracer (void);
/* In var-tracking.c */
extern unsigned int variable_tracking_main (void);
/* Keep this for the nonce. */
#define gen_lowpart rtl_hooks.gen_lowpart
+extern void insn_locators_alloc (void);
+extern void insn_locators_finalize (void);
+extern void set_curr_insn_source_location (location_t);
+extern void set_curr_insn_block (tree);
+extern int curr_insn_locator (void);
+
#endif /* ! GCC_RTL_H */
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