promoted mode.
1 in a CODE_LABEL if the label is used for nonlocal gotos
and must not be deleted even if its count is zero.
- 1 in a LABEL_REF if this is a reference to a label outside the
- current loop.
1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
together with the preceding insn. Valid only within sched.
1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
from the target of a branch. Valid from reorg until end of compilation;
- cleared before used.
- 1 in an INSN, JUMP_INSN or CALL_INSN or related rtx if this insn is
- dead code. Valid only during dead-code elimination phase; cleared
- before use. */
+ cleared before used. */
unsigned int in_struct : 1;
/* At the end of RTL generation, 1 if this rtx is used. This is used for
copying shared structure. See `unshare_all_rtl'.
#define XCBITMAP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bit)
#define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
#define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
-#define XCADVFLAGS(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_addr_diff_vec_flags)
#define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
#define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
#define INSN_ANNULLED_BRANCH_P(RTX) \
(RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging)
-/* 1 if RTX is an insn that is dead code. Valid only for dead-code
- elimination phase. */
-#define INSN_DEAD_CODE_P(RTX) \
- (RTL_FLAG_CHECK3("INSN_DEAD_CODE_P", (RTX), INSN, CALL_INSN, JUMP_INSN)->in_struct)
-
/* 1 if RTX is an insn in a delay slot and is from the target of the branch.
If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
executed if the branch is taken. For annulled branches with this bit
#define INSN_FROM_TARGET_P(RTX) \
(RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct)
+/* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
+ See the comments for ADDR_DIFF_VEC in rtl.def. */
#define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4)
+/* In a VALUE, the value cselib has assigned to RTX.
+ This is a "struct cselib_val_struct", see cselib.h. */
#define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0)
/* Holds a list of notes on what this insn does to various REGs.
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)
enum reg_note
Label numbers are unique in a compilation. */
#define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6)
-#define LINE_NUMBER NOTE
-
/* In a NOTE that is a line number, this is a string for the file name that the
line is in. We use the same field to record block numbers temporarily in
NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
\f
/* This is the field in the LABEL_REF through which the circular chain
of references to a particular label is linked.
- This chain is set up in flow.c. */
-
+ FIXME: This chain is used in loop.c and in the SH backend.
+ Since loop.c is about to go away, it could be a win to replace
+ the uses of this in the SH backend with something else. */
#define LABEL_NEXTREF(REF) XCEXP (REF, 1, LABEL_REF)
-/* Once basic blocks are found in flow.c,
- Each LABEL_REF points to its containing instruction with this field. */
-
-#define CONTAINING_INSN(RTX) XCEXP (RTX, 2, LABEL_REF)
-
/* 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 HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
/* For a CONST_INT rtx, INTVAL extracts the integer. */
-
#define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT)
/* For a CONST_DOUBLE:
#define LABEL_PRESERVE_P(RTX) \
(RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
-/* 1 if RTX is a reg that is used only in an exit test of a loop. */
-#define REG_LOOP_TEST_P(RTX) \
- (RTL_FLAG_CHECK1("REG_LOOP_TEST_P", (RTX), REG)->in_struct)
-
/* During sched, 1 if RTX is an insn that must be scheduled together
with the preceding insn. */
#define SCHED_GROUP_P(RTX) \
/* In builtins.c */
extern rtx expand_builtin_expect_jump (tree, rtx, rtx);
-extern void purge_builtin_constant_p (void);
/* In explow.c */
extern void set_stack_check_libfunc (rtx);
extern void set_reg_attrs_from_mem (rtx, rtx);
extern void set_mem_attrs_from_reg (rtx, rtx);
extern void set_reg_attrs_for_parm (rtx, rtx);
-extern void set_reg_pointer_align (rtx, unsigned int);
extern int mem_expr_equal_p (tree, tree);
/* In rtl.c */
extern rtx copy_rtx_if_shared (rtx);
/* In rtl.c */
-extern rtx copy_most_rtx (rtx, rtx);
extern rtx shallow_copy_rtx_stat (rtx MEM_STAT_DECL);
#define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
extern int rtx_equal_p (rtx, 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_label_rtx (void);
-extern int subreg_hard_regno (rtx, int);
extern rtx gen_lowpart_common (enum machine_mode, rtx);
/* In cse.c */
extern void start_sequence (void);
extern void push_to_sequence (rtx);
extern void end_sequence (void);
-extern void push_to_full_sequence (rtx, rtx);
extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT,
enum machine_mode);
extern rtx get_pool_constant_mark (rtx, bool *);
extern enum machine_mode get_pool_mode (rtx);
extern rtx get_pool_constant_for_function (struct function *, rtx);
-extern enum machine_mode get_pool_mode_for_function (struct function *, rtx);
-extern int get_pool_offset (rtx);
extern rtx simplify_subtraction (rtx);
/* In function.c */
extern rtx prev_cc0_setter (rtx);
/* In cfglayout.c */
-extern tree choose_inner_scope (tree, tree);
extern int insn_line (rtx);
extern const char * insn_file (rtx);
extern int locator_line (int);
extern bool squeeze_notes (rtx *, rtx *);
extern rtx delete_related_insns (rtx);
extern void delete_jump (rtx);
-extern void delete_barrier (rtx);
extern rtx get_label_before (rtx);
extern rtx get_label_after (rtx);
extern rtx follow_jumps (rtx);
extern bool label_is_jump_target_p (rtx, rtx);
extern int insn_rtx_cost (rtx);
+/* Given an insn and condition, return a canonical description of
+ the test being made. */
+extern rtx canonicalize_condition (rtx, rtx, int, rtx *, rtx, int, int);
+
+/* Given a JUMP_INSN, return a canonical description of the test
+ being made. */
+extern rtx get_condition (rtx, rtx *, int, int);
+
+
/* flow.c */
extern rtx find_use_as_address (rtx, rtx, HOST_WIDE_INT);
extern int condjump_p (rtx);
extern int any_condjump_p (rtx);
extern int any_uncondjump_p (rtx);
-extern int safe_to_remove_jump_p (rtx);
extern rtx pc_set (rtx);
extern rtx condjump_label (rtx);
extern int simplejump_p (rtx);
extern void add_insn_after (rtx, rtx);
extern void remove_insn (rtx);
extern void emit_insn_after_with_line_notes (rtx, rtx, rtx);
-extern enum rtx_code classify_insn (rtx);
extern rtx emit (rtx);
extern void renumber_insns (FILE *);
extern void remove_unnecessary_notes (void);
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 bool validate_subreg (enum machine_mode, enum machine_mode,
+ rtx, unsigned int);
/* In combine.c */
extern int combine_instructions (rtx, unsigned int);
/* In loop.c */
extern void init_loop (void);
extern void loop_optimize (rtx, FILE *, int);
+
+/* In bt-load.c */
extern void branch_target_load_optimize (bool);
/* In function.c */
extern void init_alias_once (void);
extern void init_alias_analysis (void);
extern void end_alias_analysis (void);
-extern rtx addr_side_effect_eval (rtx, int, int);
extern bool memory_modified_in_insn_p (rtx, rtx);
extern rtx find_base_term (rtx);
extern rtx gen_hard_reg_clobber (enum machine_mode, unsigned int);
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