{
HOST_WIDE_INT rtwint;
int rtint;
+ unsigned int rtuint;
const char *rtstr;
struct rtx_def *rtx;
struct rtvec_def *rtvec;
0 if the MEM was a variable or the result of a * operator in C;
1 if it was the result of a . or -> operator (on a struct) in C.
1 in a REG if the register is used only in exit code a loop.
- 1 in a SUBREG expression if was generated from a variable with a
+ 1 in a SUBREG expression if was generated from a variable with a
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.
unsigned int in_struct : 1;
/* 1 if this rtx is used. This is used for copying shared structure.
See `unshare_all_rtl'.
- In a REG, this is not needed for that purpose, and used instead
+ In a REG, this is not needed for that purpose, and used instead
in `leaf_renumber_regs_insn'.
In a SYMBOL_REF, means that emit_library_call
has used it as the function. */
unsigned integrated : 1;
/* 1 in an INSN or a SET if this rtx is related to the call frame,
either changing how we compute the frame address or saving and
- restoring registers in the prologue and epilogue.
+ restoring registers in the prologue and epilogue.
1 in a MEM if the MEM refers to a scalar, rather than a member of
an aggregate. */
unsigned frame_related : 1;
#define XCWINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtwint)
#define XCINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtint)
+#define XCUINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtuint)
#define XCSTR(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtstr)
#define XCEXP(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtx)
#define XCVEC(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtvec)
clear, the insn should be executed only if the branch is not taken. */
#define INSN_FROM_TARGET_P(INSN) ((INSN)->in_struct)
+#define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4)
+
+#define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0)
+
/* Holds a list of notes on what this insn does to various REGs.
- It is a chain of EXPR_LIST rtx's, where the second operand
- is the chain pointer and the first operand is the REG being described.
+ It is a chain of EXPR_LIST rtx's, where the second operand is the
+ 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 that says what this note says about the REG:
- REG_DEAD means that the value in REG dies in this insn (i.e., it is
- not needed past this insn). If REG is set in this insn, the REG_DEAD
- note may, but need not, be omitted.
- REG_INC means that the REG is autoincremented or autodecremented.
- REG_EQUIV describes the insn as a whole; it says that the insn
- sets a register to a constant value or to be equivalent to a memory
- address. If the register is spilled to the stack then the constant
- value should be substituted for it. The contents of the REG_EQUIV
- is the constant value or memory address, which may be different
- from the source of the SET although it has the same value. A
- REG_EQUIV note may also appear on an insn which copies a register
- parameter to a pseudo-register, if there is a memory address which
- could be used to hold that pseudo-register throughout the function.
- REG_EQUAL is like REG_EQUIV except that the destination
- is only momentarily equal to the specified rtx. Therefore, it
- cannot be used for substitution; but it can be used for cse.
- REG_RETVAL means that this insn copies the return-value of
- a library call out of the hard reg for return values. This note
- is actually an INSN_LIST and it points to the first insn involved
- in setting up arguments for the call. flow.c uses this to delete
- the entire library call when its result is dead.
- REG_LIBCALL is the inverse of REG_RETVAL: it goes on the first insn
- of the library call and points at the one that has the REG_RETVAL.
- REG_WAS_0 says that the register set in this insn held 0 before the insn.
- The contents of the note is the insn that stored the 0.
- If that insn is deleted or patched to a NOTE, the REG_WAS_0 is inoperative.
- The REG_WAS_0 note is actually an INSN_LIST, not an EXPR_LIST.
- REG_NONNEG means that the register is always nonnegative during
- the containing loop. This is used in branches so that decrement and
- branch instructions terminating on zero can be matched. There must be
- an insn pattern in the md file named `decrement_and_branch_until_zero'
- or else this will never be added to any instructions.
- REG_NO_CONFLICT means there is no conflict *after this insn*
- between the register in the note and the destination of this insn.
- REG_UNUSED identifies a register set in this insn and never used.
- REG_CC_SETTER and REG_CC_USER link a pair of insns that set and use
- CC0, respectively. Normally, these are required to be consecutive insns,
- but we permit putting a cc0-setting insn in the delay slot of a branch
- as long as only one copy of the insn exists. In that case, these notes
- point from one to the other to allow code generation to determine what
- any require information and to properly update CC_STATUS.
- REG_LABEL points to a CODE_LABEL. Used by non-JUMP_INSNs to
- say that the CODE_LABEL contained in the REG_LABEL note is used
- by the insn.
- REG_DEP_ANTI is used in LOG_LINKS which represent anti (write after read)
- dependencies. REG_DEP_OUTPUT is used in LOG_LINKS which represent output
- (write after write) dependencies. Data dependencies, which are the only
- type of LOG_LINK created by flow, are represented by a 0 reg note kind. */
-/* REG_BR_PROB is attached to JUMP_INSNs and CALL_INSNs when the flag
- -fbranch-probabilities is given. It has an integer value. For jumps,
- it is the probability that this is a taken branch. For calls, it is the
- probability that this call won't return.
- REG_EXEC_COUNT is attached to the first insn of each basic block, and
- the first insn after each CALL_INSN. It indicates how many times this
- block was executed.
- REG_SAVE_AREA is used to optimize rtl generated by dynamic stack
- allocations for targets where SETJMP_VIA_SAVE_AREA is true.
- REG_BR_PRED is attached to JUMP_INSNs only, it holds the branch prediction
- flags computed by get_jump_flags() after dbr scheduling is complete.
- REG_FRAME_RELATED_EXPR is attached to insns that are RTX_FRAME_RELATED_P,
- but are too complex for DWARF to interpret what they imply. The attached
- rtx is used instead of intuition.
- REG_EH_REGION is used to indicate what exception region an INSN
- belongs in. This can be used to indicate what region a call may throw
- to. a REGION of 0 indicates that a call cannot throw at all.
- a REGION of -1 indicates that it cannot throw, nor will it execute
- a non-local goto.
- REG_EH_RETHROW is used to indicate that a call is actually a
- call to rethrow, and specifies the rethrow symbol for the region
- the rethrow is targetting. This provides a way to generate the
- non standard flow edges required for a rethrow.
- REG_SAVE_NOTE is used by haifa-sched to save NOTE_INSN notes
- across scheduling. */
+ but a value from enum reg_note. */
#define REG_NOTES(INSN) XEXP(INSN, 6)
-#define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4)
-
-#define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0)
-
/* Don't forget to change reg_note_name in rtl.c. */
-enum reg_note { REG_DEAD = 1, REG_INC = 2, REG_EQUIV = 3, REG_WAS_0 = 4,
- REG_EQUAL = 5, REG_RETVAL = 6, REG_LIBCALL = 7,
- REG_NONNEG = 8, REG_NO_CONFLICT = 9, REG_UNUSED = 10,
- REG_CC_SETTER = 11, REG_CC_USER = 12, REG_LABEL = 13,
- REG_DEP_ANTI = 14, REG_DEP_OUTPUT = 15, REG_BR_PROB = 16,
- REG_EXEC_COUNT = 17, REG_NOALIAS = 18, REG_SAVE_AREA = 19,
- REG_BR_PRED = 20, REG_EH_CONTEXT = 21,
- REG_FRAME_RELATED_EXPR = 22, REG_EH_REGION = 23,
- REG_EH_RETHROW = 24, REG_SAVE_NOTE = 25 };
+enum reg_note
+{
+ /* The value in REG dies in this insn (i.e., it is not needed past
+ this insn). If REG is set in this insn, the REG_DEAD note may,
+ but need not, be omitted. */
+ REG_DEAD = 1,
+
+ /* The REG is autoincremented or autodecremented. */
+ REG_INC,
+
+ /* Describes the insn as a whole; it says that the insn sets a register
+ to a constant value or to be equivalent to a memory address. If the
+ register is spilled to the stack then the constant value should be
+ substituted for it. The contents of the REG_EQUIV is the constant
+ value or memory address, which may be different from the source of
+ the SET although it has the same value. A REG_EQUIV note may also
+ appear on an insn which copies a register parameter to a pseudo-register,
+ if there is a memory address which could be used to hold that
+ pseudo-register throughout the function. */
+ REG_EQUIV,
+
+ /* Like REG_EQUIV except that the destination is only momentarily equal
+ to the specified rtx. Therefore, it cannot be used for substitution;
+ but it can be used for cse. */
+ REG_EQUAL,
+
+ /* The register set in this insn held 0 before the insn. The contents of
+ the note is the insn that stored the 0. If that insn is deleted or
+ patched to a NOTE, the REG_WAS_0 is inoperative. The REG_WAS_0 note
+ is actually an INSN_LIST, not an EXPR_LIST. */
+ REG_WAS_0,
+
+ /* This insn copies the return-value of a library call out of the hard reg
+ for return values. This note is actually an INSN_LIST and it points to
+ the first insn involved in setting up arguments for the call. flow.c
+ uses this to delete the entire library call when its result is dead. */
+ REG_RETVAL,
+
+ /* The inverse of REG_RETVAL: it goes on the first insn of the library call
+ and points at the one that has the REG_RETVAL. */
+ REG_LIBCALL,
+
+ /* The register is always nonnegative during the containing loop. This is
+ used in branches so that decrement and branch instructions terminating
+ on zero can be matched. There must be an insn pattern in the md file
+ named `decrement_and_branch_until_zero' or else this will never be added
+ to any instructions. */
+ REG_NONNEG,
+
+ /* There is no conflict *after this insn* between the register in the note
+ and the destination of this insn. */
+ REG_NO_CONFLICT,
+
+ /* Identifies a register set in this insn and never used. */
+ REG_UNUSED,
+
+ /* REG_CC_SETTER and REG_CC_USER link a pair of insns that set and use CC0,
+ respectively. Normally, these are required to be consecutive insns, but
+ we permit putting a cc0-setting insn in the delay slot of a branch as
+ long as only one copy of the insn exists. In that case, these notes
+ point from one to the other to allow code generation to determine what
+ any require information and to properly update CC_STATUS. */
+ REG_CC_SETTER, REG_CC_USER,
+
+ /* Points to a CODE_LABEL. Used by non-JUMP_INSNs to say that the
+ CODE_LABEL contained in the REG_LABEL note is used by the insn. */
+ REG_LABEL,
+
+ /* REG_DEP_ANTI and REG_DEP_OUTPUT are used in LOG_LINKS to represent
+ write-after-read and write-after-write dependencies respectively.
+ Data dependencies, which are the only type of LOG_LINK created by
+ flow, are represented by a 0 reg note kind. */
+ REG_DEP_ANTI, REG_DEP_OUTPUT,
+
+ /* REG_BR_PROB is attached to JUMP_INSNs and CALL_INSNs when the flag
+ -fbranch-probabilities is given. It has an integer value. For jumps,
+ it is the probability that this is a taken branch. For calls, it is
+ the probability that this call won't return. */
+ REG_BR_PROB,
+
+ /* REG_EXEC_COUNT is attached to the first insn of each basic block, and
+ the first insn after each CALL_INSN. It indicates how many times this
+ block was executed. */
+ REG_EXEC_COUNT,
+
+ /* Attached to a call insn; indicates that the call is malloc-like and
+ that the pointer returned cannot alias anything else. */
+ REG_NOALIAS,
+
+ /* Used to optimize rtl generated by dynamic stack allocations for targets
+ where SETJMP_VIA_SAVE_AREA is true. */
+ REG_SAVE_AREA,
+
+ /* Attached to JUMP_INSNs only, it holds the branch prediction flags
+ computed by get_jump_flags() after dbr scheduling is complete. */
+ REG_BR_PRED,
+
+ /* Attached to insns that are RTX_FRAME_RELATED_P, but are too complex
+ for DWARF to interpret what they imply. The attached rtx is used
+ instead of intuition. */
+ REG_FRAME_RELATED_EXPR,
+
+ /* Indicates that REG holds the exception context for the function.
+ This context is shared by inline functions, so the code to acquire
+ the real exception context is delayed until after inlining. */
+ REG_EH_CONTEXT,
+
+ /* Indicates what exception region an INSN belongs in. This is used to
+ indicate what region to which a call may throw. REGION 0 indicates
+ that a call cannot throw at all. REGION -1 indicates that it cannot
+ throw, nor will it execute a non-local goto. */
+ REG_EH_REGION,
+
+ /* Indicates that a call is actually a call to rethrow, and specifies the
+ rethrow symbol for the region the rethrow is targetting. This provides
+ a way to generate the non standard flow edges required for a rethrow. */
+ REG_EH_RETHROW,
+
+ /* Used by haifa-sched to save NOTE_INSN notes across scheduling. */
+ REG_SAVE_NOTE
+};
+
/* The base value for branch probability notes. */
#define REG_BR_PROB_BASE 10000
#define LABEL_ALTERNATE_NAME(RTX) XCSTR(RTX, 7, CODE_LABEL)
/* The original regno this ADDRESSOF was built for. */
-#define ADDRESSOF_REGNO(RTX) XCINT(RTX, 1, ADDRESSOF)
+#define ADDRESSOF_REGNO(RTX) XCUINT(RTX, 1, ADDRESSOF)
/* The variable in the register we took the address of. */
#define ADDRESSOF_DECL(RTX) XCTREE(RTX, 2, ADDRESSOF)
/* For a REG rtx, REGNO extracts the register number. */
-#define REGNO(RTX) XCINT(RTX, 0, REG)
+#define REGNO(RTX) XCUINT(RTX, 0, REG)
/* For a REG rtx, REG_FUNCTION_VALUE_P is nonzero if the reg
is the current function's return value. */
SUBREG_WORD extracts the word-number. */
#define SUBREG_REG(RTX) XCEXP(RTX, 0, SUBREG)
-#define SUBREG_WORD(RTX) XCINT(RTX, 1, SUBREG)
+#define SUBREG_WORD(RTX) XCUINT(RTX, 1, SUBREG)
/* 1 if the REG contained in SUBREG_REG is already known to be
sign- or zero-extended from the mode of the SUBREG to the mode of
the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
- extension.
+ extension.
When used as a LHS, is means that this extension must be done
when assigning to SUBREG_REG. */
extern rtx gen_highpart PARAMS ((enum machine_mode, rtx));
extern rtx gen_realpart PARAMS ((enum machine_mode, rtx));
extern rtx gen_imagpart PARAMS ((enum machine_mode, rtx));
-extern rtx operand_subword PARAMS ((rtx, int, int, enum machine_mode));
-extern rtx operand_subword_force PARAMS ((rtx, int, enum machine_mode));
+extern rtx operand_subword PARAMS ((rtx, unsigned int, int,
+ enum machine_mode));
+extern rtx operand_subword_force PARAMS ((rtx, unsigned int,
+ enum machine_mode));
extern int subreg_lowpart_p PARAMS ((rtx));
extern rtx make_safe_from PARAMS ((rtx, rtx));
extern rtx convert_memory_address PARAMS ((enum machine_mode, rtx));
extern rtx gen_ble PARAMS ((rtx));
extern rtx gen_mem_addressof PARAMS ((rtx, union tree_node *));
extern rtx eliminate_constant_term PARAMS ((rtx, rtx *));
-extern rtx expand_complex_abs PARAMS ((enum machine_mode, rtx, rtx, int));
-extern enum machine_mode choose_hard_reg_mode PARAMS ((int, int));
+extern rtx expand_complex_abs PARAMS ((enum machine_mode, rtx, rtx,
+ int));
+extern enum machine_mode choose_hard_reg_mode PARAMS ((unsigned int,
+ unsigned int));
extern void set_unique_reg_note PARAMS ((rtx, enum reg_note, rtx));
/* Functions in rtlanal.c */
extern rtx single_set PARAMS ((rtx));
extern int multiple_sets PARAMS ((rtx));
extern rtx find_last_value PARAMS ((rtx, rtx *, rtx, int));
-extern int refers_to_regno_p PARAMS ((int, int, rtx, rtx *));
+extern int refers_to_regno_p PARAMS ((unsigned int, unsigned int,
+ rtx, rtx *));
extern int reg_overlap_mentioned_p PARAMS ((rtx, rtx));
-extern void note_stores PARAMS ((rtx, void (*)(rtx, rtx, void *), void *));
+extern void note_stores PARAMS ((rtx,
+ void (*) (rtx, rtx, void *),
+ void *));
extern rtx reg_set_last PARAMS ((rtx, rtx));
extern int dead_or_set_p PARAMS ((rtx, rtx));
-extern int dead_or_set_regno_p PARAMS ((rtx, int));
+extern int dead_or_set_regno_p PARAMS ((rtx, unsigned int));
extern rtx find_reg_note PARAMS ((rtx, enum reg_note, rtx));
-extern rtx find_regno_note PARAMS ((rtx, enum reg_note, int));
+extern rtx find_regno_note PARAMS ((rtx, enum reg_note,
+ unsigned int));
extern int find_reg_fusage PARAMS ((rtx, enum rtx_code, rtx));
-extern int find_regno_fusage PARAMS ((rtx, enum rtx_code, int));
+extern int find_regno_fusage PARAMS ((rtx, enum rtx_code,
+ unsigned int));
extern void remove_note PARAMS ((rtx, rtx));
extern int side_effects_p PARAMS ((rtx));
extern int volatile_refs_p PARAMS ((rtx));
extern int may_trap_p PARAMS ((rtx));
extern int inequality_comparisons_p PARAMS ((rtx));
extern rtx replace_rtx PARAMS ((rtx, rtx, rtx));
-extern rtx replace_regs PARAMS ((rtx, rtx *, int, int));
+extern rtx replace_regs PARAMS ((rtx, rtx *, unsigned int,
+ int));
extern int computed_jump_p PARAMS ((rtx));
typedef int (*rtx_function) PARAMS ((rtx *, void *));
extern int for_each_rtx PARAMS ((rtx *, rtx_function, void *));
-extern rtx regno_use_in PARAMS ((int, rtx));
+extern rtx regno_use_in PARAMS ((unsigned int, rtx));
extern int auto_inc_p PARAMS ((rtx));
extern void remove_node_from_expr_list PARAMS ((rtx, rtx *));
extern int insns_safe_to_move_p PARAMS ((rtx, rtx, rtx *));
extern rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE];
-/* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
+/* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
same as VOIDmode. */
#define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
/* This points to the Canonical Frame Address of the function. This
should corrospond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
but is calculated relative to the arg pointer for simplicity; the
- frame pointer nor stack pointer are necessarily fixed relative to
+ frame pointer nor stack pointer are necessarily fixed relative to
the CFA until after reload. */
#define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
extern void add_clobbers PARAMS ((rtx, int));
/* In combine.c */
-extern int combine_instructions PARAMS ((rtx, int));
-extern int extended_count PARAMS ((rtx, enum machine_mode, int));
-extern rtx remove_death PARAMS ((int, rtx));
+extern int combine_instructions PARAMS ((rtx, unsigned int));
+extern unsigned int extended_count PARAMS ((rtx, enum machine_mode, int));
+extern rtx remove_death PARAMS ((unsigned int, rtx));
#ifdef BUFSIZ
extern void dump_combine_stats PARAMS ((FILE *));
extern void dump_combine_total_stats PARAMS ((FILE *));
extern void regset_release_memory PARAMS ((void));
extern void regclass_init PARAMS ((void));
extern void regclass PARAMS ((rtx, int, FILE *));
-extern void reg_scan PARAMS ((rtx, int, int));
-extern void reg_scan_update PARAMS ((rtx, rtx, int));
+extern void reg_scan PARAMS ((rtx, unsigned int, int));
+extern void reg_scan_update PARAMS ((rtx, rtx, unsigned int));
extern void fix_register PARAMS ((const char *, int, int));
extern void delete_null_pointer_checks PARAMS ((rtx));
#endif
/* In alias.c */
+extern rtx canon_rtx PARAMS ((rtx));
extern int true_dependence PARAMS ((rtx, enum machine_mode, rtx,
int (*)(rtx)));
extern int read_dependence PARAMS ((rtx, rtx));
extern rtx stack_limit_rtx;
+/* In regrename.c */
+
+extern void regrename_optimize PARAMS ((void));
+
#endif /* _RTL_H */
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