/* Register Transfer Language (RTL) definitions for GNU C-Compiler
- Copyright (C) 1987, 1991 Free Software Foundation, Inc.
+ Copyright (C) 1987, 91-97, 1998 Free Software Foundation, Inc.
This file is part of GNU CC.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+#ifndef _RTL_H
+#define _RTL_H
#include "machmode.h"
#undef FFS /* Some systems predefine this symbol; don't let it interfere. */
#undef FLOAT /* Likewise. */
+#undef ABS /* Likewise. */
+#undef PC /* Likewise. */
+
+#ifndef TREE_CODE
+union tree_node;
+#endif
/* Register Transfer Language EXPRESSIONS CODES */
#include "rtl.def" /* rtl expressions are documented here */
#undef DEF_RTL_EXPR
- LAST_AND_UNUSED_RTX_CODE}; /* A convienent way to get a value for
+ LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for
NUM_RTX_CODE.
- Assumes default enum value assignement. */
+ Assumes default enum value assignment. */
#define NUM_RTX_CODE ((int)LAST_AND_UNUSED_RTX_CODE)
/* The cast here, saves many elsewhere. */
extern int rtx_length[];
-#define GET_RTX_LENGTH(CODE) (rtx_length[(int)(CODE)])
+#define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
extern char *rtx_name[];
-#define GET_RTX_NAME(CODE) (rtx_name[(int)(CODE)])
+#define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
extern char *rtx_format[];
-#define GET_RTX_FORMAT(CODE) (rtx_format[(int)(CODE)])
+#define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
extern char rtx_class[];
-#define GET_RTX_CLASS(CODE) (rtx_class[(int)(CODE)])
+#define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
\f
+/* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
+ relative to which the offsets are calculated, as explained in rtl.def. */
+typedef struct
+{
+ /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
+ unsigned min_align: 8;
+ /* Flags: */
+ unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */
+ unsigned min_after_vec: 1; /* minimum address target label is after the ADDR_DIFF_VEC. */
+ unsigned max_after_vec: 1; /* maximum address target label is after the ADDR_DIFF_VEC. */
+ unsigned min_after_base: 1; /* minimum address target label is after BASE. */
+ unsigned max_after_base: 1; /* maximum address target label is after BASE. */
+ /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
+ unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */
+ unsigned : 2;
+ unsigned scale : 8;
+} addr_diff_vec_flags;
+
/* Common union for an element of an rtx. */
typedef union rtunion_def
{
+ HOST_WIDE_INT rtwint;
int rtint;
char *rtstr;
struct rtx_def *rtx;
struct rtvec_def *rtvec;
enum machine_mode rttype;
+ addr_diff_vec_flags rt_addr_diff_vec_flags;
+ struct bitmap_head_def *rtbit;
+ union tree_node *rttree;
} rtunion;
/* RTL expression ("rtx"). */
typedef struct rtx_def
{
#ifdef ONLY_INT_FIELDS
+#ifdef CODE_FIELD_BUG
+ unsigned int code : 16;
+#else
unsigned short code;
+#endif
#else
/* The kind of expression this is. */
enum rtx_code code : 16;
/* 1 in a MEM or REG if value of this expression will never change
during the current function, even though it is not
manifestly constant.
+ 1 in a SUBREG if it is from a promoted variable that is unsigned.
1 in a SYMBOL_REF if it addresses something in the per-function
constants pool.
1 in a CALL_INSN if it is a const call.
if it is deleted.
1 in a REG expression if corresponds to a variable declared by the user.
0 for an internally generated temporary.
- In a SYMBOL_REF, this flag is used for machine-specific purposes. */
+ In a SYMBOL_REF, this flag is used for machine-specific purposes.
+ In a LABEL_REF or in a REG_LABEL note, this is LABEL_REF_NONLOCAL_P. */
unsigned int volatil : 1;
- /* 1 in a MEM referring to a field of a structure (not a union!).
+ /* 1 in a MEM referring to a field of an aggregate.
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
+ 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 preceeding insn. Valid only within sched.
+ 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. */
In a REG, nonzero means this reg refers to the return value
of the current function. */
unsigned integrated : 1;
+ /* Nonzero 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. */
+ unsigned frame_related : 1;
/* The first element of the operands of this rtx.
The number of operands and their types are controlled
by the `code' field, according to rtl.def. */
rtunion fld[1];
} *rtx;
+#include "gansidecl.h"
+
#define NULL_RTX (rtx) 0
/* Define macros to access the `code' field of the rtx. */
#define RTX_INTEGRATED_P(RTX) ((RTX)->integrated)
#define RTX_UNCHANGING_P(RTX) ((RTX)->unchanging)
+#define RTX_FRAME_RELATED_P(RTX) ((RTX)->frame_related)
/* RTL vector. These appear inside RTX's when there is a need
for a variable number of things. The principle use is inside
PARALLEL expressions. */
typedef struct rtvec_def{
- unsigned num_elem; /* number of elements */
+ int num_elem; /* number of elements */
rtunion elem[1];
} *rtvec;
#define NULL_RTVEC (rtvec) 0
#define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
-#define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (unsigned) NUM)
+#define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
#define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[(I)].rtx)
#define CONSTANT_P(X) \
(GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
|| GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST_DOUBLE \
- || GET_CODE (X) == CONST || GET_CODE (X) == HIGH)
+ || GET_CODE (X) == CONST || GET_CODE (X) == HIGH \
+ || GET_CODE (X) == CONSTANT_P_RTX)
/* General accessor macros for accessing the fields of an rtx. */
#define XEXP(RTX, N) ((RTX)->fld[N].rtx)
#define XINT(RTX, N) ((RTX)->fld[N].rtint)
+#define XWINT(RTX, N) ((RTX)->fld[N].rtwint)
#define XSTR(RTX, N) ((RTX)->fld[N].rtstr)
#define XVEC(RTX, N) ((RTX)->fld[N].rtvec)
#define XVECLEN(RTX, N) ((RTX)->fld[N].rtvec->num_elem)
#define XVECEXP(RTX,N,M)((RTX)->fld[N].rtvec->elem[M].rtx)
+#define XBITMAP(RTX, N) ((RTX)->fld[N].rtbit)
+#define XTREE(RTX, N) ((RTX)->fld[N].rttree)
+
\f
/* ACCESS MACROS for particular fields of insns. */
#define INSN_ANNULLED_BRANCH_P(INSN) ((INSN)->unchanging)
/* 1 if insn is in a delay slot and is from the target of the branch. If
- the branch insn has INSN_ANULLED_BRANCH_P set, this insn should only be
+ 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
clear, the insn should be executed only if the branch is not taken. */
#define INSN_FROM_TARGET_P(INSN) ((INSN)->in_struct)
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
+ 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.
+ 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_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)
+ 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. */
+
#define REG_NOTES(INSN) ((INSN)->fld[6].rtx)
+#define ADDR_DIFF_VEC_FLAGS(RTX) ((RTX)->fld[4].rt_addr_diff_vec_flags)
+
/* 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_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 };
+/* The base value for branch probability notes. */
+#define REG_BR_PROB_BASE 10000
/* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
#define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
/* Names for REG_NOTE's in EXPR_LIST insn's. */
extern char *reg_note_name[];
-#define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int)(MODE)])
+#define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
+
+/* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
+ USE and CLOBBER expressions.
+ USE expressions list the registers filled with arguments that
+ are passed to the function.
+ 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) ((INSN)->fld[7].rtx)
/* The label-number of a code-label. The assembler label
is made from `L' and the label-number printed in decimal.
#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. */
+/* 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
+ between ints and pointers if we use a different macro for the block number.)
+ The NOTE_INSN_RANGE_{START,END} and NOTE_INSN_LIVE notes record their
+ information as a rtx in the field. */
#define NOTE_SOURCE_FILE(INSN) ((INSN)->fld[3].rtstr)
+#define NOTE_BLOCK_NUMBER(INSN) ((INSN)->fld[3].rtint)
+#define NOTE_RANGE_INFO(INSN) ((INSN)->fld[3].rtx)
+#define NOTE_LIVE_INFO(INSN) ((INSN)->fld[3].rtx)
+
+/* If the NOTE_BLOCK_NUMBER field gets a -1, it means create a new
+ block node for a live range block. */
+#define NOTE_BLOCK_LIVE_RANGE_BLOCK -1
/* 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) ((INSN)->fld[4].rtint)
/* Codes that appear in the NOTE_LINE_NUMBER field
- for kinds of notes that are not line numbers. */
+ for kinds of notes that are not line numbers.
-/* This note indicates the end of the real body of the function,
- after moving the parms into their homes, etc. */
-#define NOTE_INSN_FUNCTION_BEG 0
+ Notice that we do not try to use zero here for any of
+ the special note codes because sometimes the source line
+ actually can be zero! This happens (for example) when we
+ are generating code for the per-translation-unit constructor
+ and destructor routines for some C++ translation unit.
+
+ If you should change any of the following values, or if you
+ should add a new value here, don't forget to change the
+ note_insn_name array in rtl.c. */
/* This note is used to get rid of an insn
when it isn't safe to patch the insn out of the chain. */
#define NOTE_INSN_LOOP_CONT -8
/* Generated at the start of a duplicated exit test. */
#define NOTE_INSN_LOOP_VTOP -9
-/* Don't forget to change note_insn_name in rtl.c. */
-
+/* This marks the point immediately after the last prologue insn. */
+#define NOTE_INSN_PROLOGUE_END -10
+/* This marks the point immediately prior to the first epilogue insn. */
+#define NOTE_INSN_EPILOGUE_BEG -11
+/* Generated in place of user-declared labels when they are deleted. */
+#define NOTE_INSN_DELETED_LABEL -12
+/* This note indicates the start of the real body of the function,
+ i.e. the point just after all of the parms have been moved into
+ their homes, etc. */
+#define NOTE_INSN_FUNCTION_BEG -13
+/* These note where exception handling regions begin and end. */
+#define NOTE_INSN_EH_REGION_BEG -14
+#define NOTE_INSN_EH_REGION_END -15
+/* Generated whenever a duplicate line number note is output. For example,
+ one is output after the end of an inline function, in order to prevent
+ the line containing the inline call from being counted twice in gcov. */
+#define NOTE_REPEATED_LINE_NUMBER -16
+
+/* Start/end of a live range region, where pseudos allocated on the stack can
+ be allocated to temporary registers. */
+#define NOTE_INSN_RANGE_START -17
+#define NOTE_INSN_RANGE_END -18
+/* Record which registers are currently live. */
+#define NOTE_INSN_LIVE -19
+
+#if 0 /* These are not used, and I don't know what they were for. --rms. */
#define NOTE_DECL_NAME(INSN) ((INSN)->fld[3].rtstr)
#define NOTE_DECL_CODE(INSN) ((INSN)->fld[4].rtint)
#define NOTE_DECL_RTL(INSN) ((INSN)->fld[5].rtx)
#define NOTE_DECL_IDENTIFIER(INSN) ((INSN)->fld[6].rtint)
#define NOTE_DECL_TYPE(INSN) ((INSN)->fld[7].rtint)
+#endif /* 0 */
/* Names for NOTE insn's other than line numbers. */
of LABEL_REFs that point at it, so unused labels can be deleted. */
#define LABEL_NUSES(LABEL) ((LABEL)->fld[5].rtint)
+/* The original regno this ADDRESSOF was built for. */
+#define ADDRESSOF_REGNO(RTX) ((RTX)->fld[1].rtint)
+
+/* The variable in the register we took the address of. */
+#define ADDRESSOF_DECL(X) ((tree) XEXP ((X), 2))
+#define SET_ADDRESSOF_DECL(X, T) (XEXP ((X), 2) = (rtx) (T))
+
/* 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. */
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) ((LABEL)->fld[5].rtx)
+#define LABEL_REFS(LABEL) ((LABEL)->fld[6].rtx)
\f
/* This is the field in the LABEL_REF through which the circular chain
of references to a particular label is linked.
/* For a CONST_INT rtx, INTVAL extracts the integer. */
-#define INTVAL(RTX) ((RTX)->fld[0].rtint)
+#define INTVAL(RTX) ((RTX)->fld[0].rtwint)
/* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
SUBREG_WORD extracts the word-number. */
#define SUBREG_REG(RTX) ((RTX)->fld[0].rtx)
#define SUBREG_WORD(RTX) ((RTX)->fld[1].rtint)
+/* 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.
+
+ When used as a LHS, is means that this extension must be done
+ when assigning to SUBREG_REG. */
+
+#define SUBREG_PROMOTED_VAR_P(RTX) ((RTX)->in_struct)
+#define SUBREG_PROMOTED_UNSIGNED_P(RTX) ((RTX)->unchanging)
+
/* Access various components of an ASM_OPERANDS rtx. */
#define ASM_OPERANDS_TEMPLATE(RTX) XSTR ((RTX), 0)
Also in an ASM_OPERANDS rtx. */
#define MEM_VOLATILE_P(RTX) ((RTX)->volatil)
-/* For a MEM rtx, 1 if it refers to a structure or union component. */
+/* For a MEM rtx, 1 if it refers to a field of an aggregate. */
#define MEM_IN_STRUCT_P(RTX) ((RTX)->in_struct)
+/* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
+ set, and may alias anything. Otherwise, the MEM can only alias
+ MEMs in the same alias set. This value is set in a
+ language-dependent manner in the front-end, and should not be
+ altered in the back-end. These set numbers are tested for zero,
+ and compared for equality; they have no other significance. In
+ some front-ends, these numbers may correspond in some way to types,
+ or other language-level entities, but they need not, and the
+ back-end makes no such assumptions. */
+#define MEM_ALIAS_SET(RTX) (XINT (RTX, 1))
+
/* For a LABEL_REF, 1 means that this reference is to a label outside the
loop containing the reference. */
#define LABEL_OUTSIDE_LOOP_P(RTX) ((RTX)->in_struct)
+/* For a LABEL_REF, 1 means it is for a nonlocal label. */
+/* Likewise in an EXPR_LIST for a REG_LABEL note. */
+#define LABEL_REF_NONLOCAL_P(RTX) ((RTX)->volatil)
+
/* For a CODE_LABEL, 1 means always consider this label to be needed. */
#define LABEL_PRESERVE_P(RTX) ((RTX)->in_struct)
#define REG_LOOP_TEST_P(RTX) ((RTX)->in_struct)
/* During sched, for an insn, 1 means that the insn must be scheduled together
- with the preceeding insn. */
+ with the preceding insn. */
#define SCHED_GROUP_P(INSN) ((INSN)->in_struct)
+/* During sched, for the LOG_LINKS of an insn, these cache the adjusted
+ cost of the dependence link. The cost of executing an instruction
+ may vary based on how the results are used. LINK_COST_ZERO is 1 when
+ the cost through the link varies and is unchanged (i.e., the link has
+ zero additional cost). LINK_COST_FREE is 1 when the cost through the
+ link is zero (i.e., the link makes the cost free). In other cases,
+ the adjustment to the cost is recomputed each time it is needed. */
+#define LINK_COST_ZERO(X) ((X)->jump)
+#define LINK_COST_FREE(X) ((X)->call)
+
/* For a SET rtx, SET_DEST is the place that is set
and SET_SRC is the value it is set to. */
#define SET_DEST(RTX) ((RTX)->fld[0].rtx)
/* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
#define TRAP_CONDITION(RTX) ((RTX)->fld[0].rtx)
+#define TRAP_CODE(RTX) (RTX)->fld[1].rtx
/* 1 in a SYMBOL_REF if it addresses this function's constants pool. */
#define CONSTANT_POOL_ADDRESS_P(RTX) ((RTX)->unchanging)
FUNCTION_ARGS_SIZE is the size of the argument block in the stack.
POPS_ARGS is the number of bytes of input arguments popped by the function
STACK_SLOT_LIST is the list of stack slots.
+ FORCED_LABELS is the list of labels whose address was taken.
FUNCTION_FLAGS are where single-bit flags are saved.
OUTGOING_ARGS_SIZE is the size of the largest outgoing stack parameter list.
ORIGINAL_ARG_VECTOR is a vector of the original DECL_RTX values
for the function arguments.
ORIGINAL_DECL_INITIAL is a pointer to the original DECL_INITIAL for the
function.
+ INLINE_REGNO_REG_RTX, INLINE_REGNO_POINTER_FLAG, and
+ INLINE_REGNO_POINTER_ALIGN are pointers to the corresponding arrays.
We want this to lay down like an INSN. The PREV_INSN field
is always NULL. The NEXT_INSN field always points to the
#define FUNCTION_ARGS_SIZE(RTX) ((RTX)->fld[8].rtint)
#define POPS_ARGS(RTX) ((RTX)->fld[9].rtint)
#define STACK_SLOT_LIST(RTX) ((RTX)->fld[10].rtx)
-#define FUNCTION_FLAGS(RTX) ((RTX)->fld[11].rtint)
-#define OUTGOING_ARGS_SIZE(RTX) ((RTX)->fld[12].rtint)
-#define ORIGINAL_ARG_VECTOR(RTX) ((RTX)->fld[13].rtvec)
-#define ORIGINAL_DECL_INITIAL(RTX) ((RTX)->fld[14].rtx)
+#define FORCED_LABELS(RTX) ((RTX)->fld[11].rtx)
+#define FUNCTION_FLAGS(RTX) ((RTX)->fld[12].rtint)
+#define OUTGOING_ARGS_SIZE(RTX) ((RTX)->fld[13].rtint)
+#define ORIGINAL_ARG_VECTOR(RTX) ((RTX)->fld[14].rtvec)
+#define ORIGINAL_DECL_INITIAL(RTX) ((RTX)->fld[15].rtx)
+#define INLINE_REGNO_REG_RTX(RTX) ((RTX)->fld[16].rtvec)
+#define INLINE_REGNO_POINTER_FLAG(RTX) ((RTX)->fld[17].rtstr)
+#define INLINE_REGNO_POINTER_ALIGN(RTX) ((RTX)->fld[18].rtstr)
+#define PARMREG_STACK_LOC(RTX) ((RTX)->fld[19].rtvec)
/* In FUNCTION_FLAGS we save some variables computed when emitting the code
for the function and which must be `or'ed into the current flag values when
/* 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))
+/* Don't continue this line--convex cc version 4.1 would lose. */
+#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
#define FIND_REG_INC_NOTE(insn, reg) (find_reg_note ((insn), REG_INC, (reg)))
#else
#define FIND_REG_INC_NOTE(insn, reg) 0
/* 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))
+/* Don't continue this line--convex cc version 4.1 would lose. */
+#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
#define AUTO_INC_DEC
#endif
+
+/* Accessors for RANGE_INFO. */
+/* For RANGE_{START,END} notes return the RANGE_START note. */
+#define RANGE_INFO_NOTE_START(INSN) (XEXP (INSN, 0))
+
+/* For RANGE_{START,END} notes return the RANGE_START note. */
+#define RANGE_INFO_NOTE_END(INSN) (XEXP (INSN, 1))
+
+/* For RANGE_{START,END} notes, return the vector containing the registers used
+ in the range. */
+#define RANGE_INFO_REGS(INSN) (XVEC (INSN, 2))
+#define RANGE_INFO_REGS_REG(INSN, N) (XVECEXP (INSN, 2, N))
+#define RANGE_INFO_NUM_REGS(INSN) (XVECLEN (INSN, 2))
+
+/* For RANGE_{START,END} notes, the number of calls within the range. */
+#define RANGE_INFO_NCALLS(INSN) (XINT (INSN, 3))
+
+/* For RANGE_{START,END} notes, the number of insns within the range. */
+#define RANGE_INFO_NINSNS(INSN) (XINT (INSN, 4))
+
+/* For RANGE_{START,END} notes, a unique # to identify this range. */
+#define RANGE_INFO_UNIQUE(INSN) (XINT (INSN, 5))
+
+/* For RANGE_{START,END} notes, the basic block # the range starts with. */
+#define RANGE_INFO_BB_START(INSN) (XINT (INSN, 6))
+
+/* For RANGE_{START,END} notes, the basic block # the range ends with. */
+#define RANGE_INFO_BB_END(INSN) (XINT (INSN, 7))
+
+/* For RANGE_{START,END} notes, the loop depth the range is in. */
+#define RANGE_INFO_LOOP_DEPTH(INSN) (XINT (INSN, 8))
+
+/* For RANGE_{START,END} notes, the bitmap of live registers at the start
+ of the range. */
+#define RANGE_INFO_LIVE_START(INSN) (XBITMAP (INSN, 9))
+
+/* For RANGE_{START,END} notes, the bitmap of live registers at the end
+ of the range. */
+#define RANGE_INFO_LIVE_END(INSN) (XBITMAP (INSN, 10))
+
+/* For RANGE_START notes, the marker # of the start of the range. */
+#define RANGE_INFO_MARKER_START(INSN) (XINT (INSN, 11))
+
+/* For RANGE_START notes, the marker # of the end of the range. */
+#define RANGE_INFO_MARKER_END(INSN) (XINT (INSN, 12))
+
+/* Original pseudo register # for a live range note. */
+#define RANGE_REG_PSEUDO(INSN,N) (XINT (XVECEXP (INSN, 2, N), 0))
+
+/* Pseudo register # original register is copied into or -1. */
+#define RANGE_REG_COPY(INSN,N) (XINT (XVECEXP (INSN, 2, N), 1))
+
+/* How many times a register in a live range note was referenced. */
+#define RANGE_REG_REFS(INSN,N) (XINT (XVECEXP (INSN, 2, N), 2))
+
+/* How many times a register in a live range note was set. */
+#define RANGE_REG_SETS(INSN,N) (XINT (XVECEXP (INSN, 2, N), 3))
+
+/* How many times a register in a live range note died. */
+#define RANGE_REG_DEATHS(INSN,N) (XINT (XVECEXP (INSN, 2, N), 4))
+
+/* Whether the original value is needed to be copied into the range register at
+ the start of the range. */
+#define RANGE_REG_COPY_FLAGS(INSN,N) (XINT (XVECEXP (INSN, 2, N), 5))
+
+/* # of insns the register copy is live over. */
+#define RANGE_REG_LIVE_LENGTH(INSN,N) (XINT (XVECEXP (INSN, 2, N), 6))
+
+/* # of calls the register copy is live over. */
+#define RANGE_REG_N_CALLS(INSN,N) (XINT (XVECEXP (INSN, 2, N), 7))
+
+/* DECL_NODE pointer of the declaration if the register is a user defined
+ variable. */
+#define RANGE_REG_SYMBOL_NODE(INSN,N) (XTREE (XVECEXP (INSN, 2, N), 8))
+
+/* BLOCK_NODE pointer to the block the variable is declared in if the
+ register is a user defined variable. */
+#define RANGE_REG_BLOCK_NODE(INSN,N) (XTREE (XVECEXP (INSN, 2, N), 9))
+
+/* EXPR_LIST of the distinct ranges a variable is in. */
+#define RANGE_VAR_LIST(INSN) (XEXP (INSN, 0))
+
+/* Block a variable is declared in. */
+#define RANGE_VAR_BLOCK(INSN) (XTREE (INSN, 1))
+
+/* # of distinct ranges a variable is in. */
+#define RANGE_VAR_NUM(INSN) (XINT (INSN, 2))
+
+/* For a NOTE_INSN_LIVE note, the registers which are currently live. */
+#define RANGE_LIVE_BITMAP(INSN) (XBITMAP (INSN, 0))
+
+/* For a NOTE_INSN_LIVE note, the original basic block number. */
+#define RANGE_LIVE_ORIG_BLOCK(INSN) (XINT (INSN, 1))
\f
/* Generally useful functions. */
-extern rtx rtx_alloc ();
-extern rtvec rtvec_alloc ();
-extern rtx find_reg_note ();
-extern rtx find_regno_note ();
-extern int get_integer_term ();
-extern rtx get_related_value ();
-extern rtx single_set ();
-extern rtx find_last_value ();
-extern rtx gen_rtx ();
-extern rtx copy_rtx ();
-extern rtx copy_rtx_if_shared ();
-extern rtx copy_most_rtx ();
-extern rtx replace_rtx ();
-extern rtvec gen_rtvec ();
-extern rtvec gen_rtvec_v ();
-extern rtx read_rtx ();
-extern rtx gen_reg_rtx ();
-extern rtx gen_label_rtx ();
-extern rtx gen_inline_header_rtx ();
-extern rtx gen_lowpart_common ();
-extern rtx gen_lowpart ();
-extern rtx gen_lowpart_if_possible ();
-extern rtx operand_subword ();
-extern rtx operand_subword_force ();
-extern int subreg_lowpart_p ();
-extern rtx make_safe_from ();
-extern rtx memory_address ();
-extern rtx get_insns ();
-extern rtx get_last_insn ();
-extern rtx get_last_insn_anywhere ();
-extern void start_sequence ();
-extern void push_to_sequence ();
-extern void end_sequence ();
-extern rtx gen_sequence ();
-extern rtx expand_expr ();
-extern rtx output_constant_def ();
-extern rtx immed_real_const ();
-extern rtx immed_real_const_1 ();
-extern rtx immed_double_const ();
-extern rtx force_const_mem ();
-extern rtx get_pool_constant ();
-extern enum machine_mode get_pool_mode ();
-extern int get_pool_offset ();
-extern rtx get_parm_real_loc ();
-extern rtx assign_stack_local ();
-extern rtx assign_stack_temp ();
-extern rtx protect_from_queue ();
-extern void emit_queue ();
-extern rtx emit_move_insn ();
-extern rtx emit_insn_before ();
-extern rtx emit_jump_insn_before ();
-extern rtx emit_call_insn_before ();
-extern rtx emit_barrier_before ();
-extern rtx emit_note_before ();
-extern rtx emit_insn_after ();
-extern rtx emit_jump_insn_after ();
-extern rtx emit_barrier_after ();
-extern rtx emit_label_after ();
-extern rtx emit_note_after ();
-extern rtx emit_line_note_after ();
-extern rtx emit_insn ();
-extern rtx emit_insns ();
-extern rtx emit_insns_before ();
-extern rtx emit_jump_insn ();
-extern rtx emit_call_insn ();
-extern rtx emit_label ();
-extern rtx emit_barrier ();
-extern rtx emit_line_note ();
-extern rtx emit_note ();
-extern rtx emit_line_note_force ();
-extern rtx make_insn_raw ();
-extern rtx previous_insn ();
-extern rtx next_insn ();
-extern rtx prev_nonnote_insn ();
-extern rtx next_nonnote_insn ();
-extern rtx prev_real_insn ();
-extern rtx next_real_insn ();
-extern rtx prev_active_insn ();
-extern rtx next_active_insn ();
-extern rtx prev_label ();
-extern rtx next_label ();
-extern rtx next_cc0_user ();
-extern rtx prev_cc0_setter ();
-extern rtx reg_set_last ();
-extern rtx next_nondeleted_insn ();
-extern enum rtx_code reverse_condition ();
-extern enum rtx_code swap_condition ();
-extern enum rtx_code unsigned_condition ();
-extern enum rtx_code signed_condition ();
-extern rtx plus_constant (), plus_constant_for_output ();
-extern rtx find_equiv_reg ();
-extern rtx delete_insn ();
-extern void delete_jump ();
-extern rtx get_label_before ();
-extern rtx get_label_after ();
-extern rtx follow_jumps ();
-extern rtx adj_offsettable_operand ();
-extern rtx try_split ();
-extern rtx split_insns ();
-extern rtx simplify_unary_operation (), simplify_binary_operation ();
-extern rtx simplify_ternary_operation (), simplify_relational_operation ();
-extern rtx nonlocal_label_rtx_list ();
+/* The following functions accept a wide integer argument. Rather than
+ having to cast on every function call, we use a macro instead, that is
+ defined here and in tree.h. */
+
+#ifndef exact_log2
+#define exact_log2(N) exact_log2_wide ((unsigned HOST_WIDE_INT) (N))
+#define floor_log2(N) floor_log2_wide ((unsigned HOST_WIDE_INT) (N))
+#endif
+extern int exact_log2_wide PROTO((unsigned HOST_WIDE_INT));
+extern int floor_log2_wide PROTO((unsigned HOST_WIDE_INT));
+
+/* In expmed.c */
+extern int ceil_log2 PROTO((unsigned HOST_WIDE_INT));
+
+#define plus_constant(X,C) plus_constant_wide (X, (HOST_WIDE_INT) (C))
+
+#define plus_constant_for_output(X,C) \
+ plus_constant_for_output_wide (X, (HOST_WIDE_INT) (C))
+
+/* In explow.c */
+extern rtx plus_constant_wide PROTO((rtx, HOST_WIDE_INT));
+extern rtx plus_constant_for_output_wide PROTO((rtx, HOST_WIDE_INT));
+extern void optimize_save_area_alloca PROTO((rtx));
+
+extern rtx gen_rtx PVPROTO((enum rtx_code,
+ enum machine_mode, ...));
+extern rtvec gen_rtvec PVPROTO((int, ...));
+
+#ifdef BUFSIZ
+extern rtx read_rtx PROTO((FILE *));
+#endif
+
+#if 0
+/* At present, don't prototype xrealloc, since all of the callers don't
+ cast their pointers to char *, and all of the xrealloc's don't use
+ void * yet. */
+extern char *xmalloc PROTO((size_t));
+extern char *xcalloc PROTO((size_t, size_t));
+extern char *xrealloc PROTO((void *, size_t));
+#else
+extern char *xmalloc ();
+extern char *xcalloc ();
+extern char *xrealloc ();
+#endif
+
+extern char *oballoc PROTO((int));
+extern char *permalloc PROTO((int));
+extern rtx rtx_alloc PROTO((RTX_CODE));
+extern rtvec rtvec_alloc PROTO((int));
+extern rtx copy_rtx PROTO((rtx));
+extern rtx copy_rtx_if_shared PROTO((rtx));
+extern rtx copy_most_rtx PROTO((rtx, rtx));
+extern rtvec gen_rtvec_v PROTO((int, rtx *));
+extern rtvec gen_rtvec_vv PROTO((int, rtunion *));
+extern rtx gen_reg_rtx PROTO((enum machine_mode));
+extern rtx gen_label_rtx PROTO((void));
+extern rtx gen_inline_header_rtx PROTO((rtx, rtx, int, int, int, int,
+ int, int, rtx, rtx, int, int,
+ rtvec, rtx,
+ rtvec, char *, char *, rtvec));
+extern rtx gen_lowpart_common PROTO((enum machine_mode, rtx));
+extern rtx gen_lowpart PROTO((enum machine_mode, rtx));
+extern rtx gen_lowpart_if_possible PROTO((enum machine_mode, rtx));
+extern rtx gen_highpart PROTO((enum machine_mode, rtx));
+extern rtx gen_realpart PROTO((enum machine_mode, rtx));
+extern rtx gen_imagpart PROTO((enum machine_mode, rtx));
+extern rtx operand_subword PROTO((rtx, int, int, enum machine_mode));
+extern rtx operand_subword_force PROTO((rtx, int, enum machine_mode));
+extern int subreg_lowpart_p PROTO((rtx));
+extern rtx make_safe_from PROTO((rtx, rtx));
+extern rtx convert_memory_address PROTO((enum machine_mode, rtx));
+extern rtx memory_address PROTO((enum machine_mode, rtx));
+extern rtx get_insns PROTO((void));
+extern rtx get_last_insn PROTO((void));
+extern rtx get_last_insn_anywhere PROTO((void));
+extern void start_sequence PROTO((void));
+extern void push_to_sequence PROTO((rtx));
+extern void end_sequence PROTO((void));
+extern rtx gen_sequence PROTO((void));
+extern rtx immed_double_const PROTO((HOST_WIDE_INT, HOST_WIDE_INT, enum machine_mode));
+extern rtx force_const_mem PROTO((enum machine_mode, rtx));
+extern rtx force_reg PROTO((enum machine_mode, rtx));
+extern rtx get_pool_constant PROTO((rtx));
+extern enum machine_mode get_pool_mode PROTO((rtx));
+extern int get_pool_offset PROTO((rtx));
+extern rtx simplify_subtraction PROTO((rtx));
+extern rtx assign_stack_local PROTO((enum machine_mode,
+ HOST_WIDE_INT, int));
+extern rtx assign_stack_temp PROTO((enum machine_mode,
+ HOST_WIDE_INT, int));
+extern rtx assign_temp PROTO((union tree_node *,
+ int, int, int));
+extern rtx protect_from_queue PROTO((rtx, int));
+extern void emit_queue PROTO((void));
+extern rtx emit_move_insn PROTO((rtx, rtx));
+extern rtx emit_insn_before PROTO((rtx, rtx));
+extern rtx emit_jump_insn_before PROTO((rtx, rtx));
+extern rtx emit_call_insn_before PROTO((rtx, rtx));
+extern rtx emit_barrier_before PROTO((rtx));
+extern rtx emit_note_before PROTO((int, rtx));
+extern rtx emit_insn_after PROTO((rtx, rtx));
+extern rtx emit_jump_insn_after PROTO((rtx, rtx));
+extern rtx emit_barrier_after PROTO((rtx));
+extern rtx emit_label_after PROTO((rtx, rtx));
+extern rtx emit_note_after PROTO((int, rtx));
+extern rtx emit_line_note_after PROTO((char *, int, rtx));
+extern rtx emit_insn PROTO((rtx));
+extern rtx emit_insns PROTO((rtx));
+extern rtx emit_insns_before PROTO((rtx, rtx));
+extern rtx emit_insns_after PROTO((rtx, rtx));
+extern rtx emit_jump_insn PROTO((rtx));
+extern rtx emit_call_insn PROTO((rtx));
+extern rtx emit_label PROTO((rtx));
+extern rtx emit_barrier PROTO((void));
+extern rtx emit_line_note PROTO((char *, int));
+extern rtx emit_note PROTO((char *, int));
+extern rtx emit_line_note_force PROTO((char *, int));
+extern rtx make_insn_raw PROTO((rtx));
+extern rtx previous_insn PROTO((rtx));
+extern rtx next_insn PROTO((rtx));
+extern rtx prev_nonnote_insn PROTO((rtx));
+extern rtx next_nonnote_insn PROTO((rtx));
+extern rtx prev_real_insn PROTO((rtx));
+extern rtx next_real_insn PROTO((rtx));
+extern rtx prev_active_insn PROTO((rtx));
+extern rtx next_active_insn PROTO((rtx));
+extern rtx prev_label PROTO((rtx));
+extern rtx next_label PROTO((rtx));
+extern rtx next_cc0_user PROTO((rtx));
+extern rtx prev_cc0_setter PROTO((rtx));
+extern rtx next_nondeleted_insn PROTO((rtx));
+extern enum rtx_code reverse_condition PROTO((enum rtx_code));
+extern enum rtx_code swap_condition PROTO((enum rtx_code));
+extern enum rtx_code unsigned_condition PROTO((enum rtx_code));
+extern enum rtx_code signed_condition PROTO((enum rtx_code));
+extern rtx find_equiv_reg PROTO((rtx, rtx, enum reg_class, int, short *, int, enum machine_mode));
+extern rtx squeeze_notes PROTO((rtx, rtx));
+extern rtx delete_insn PROTO((rtx));
+extern void delete_jump PROTO((rtx));
+extern rtx get_label_before PROTO((rtx));
+extern rtx get_label_after PROTO((rtx));
+extern rtx follow_jumps PROTO((rtx));
+extern rtx adj_offsettable_operand PROTO((rtx, int));
+extern rtx try_split PROTO((rtx, rtx, int));
+extern rtx split_insns PROTO((rtx, rtx));
+extern rtx simplify_unary_operation PROTO((enum rtx_code, enum machine_mode, rtx, enum machine_mode));
+extern rtx simplify_binary_operation PROTO((enum rtx_code, enum machine_mode, rtx, rtx));
+extern rtx simplify_ternary_operation PROTO((enum rtx_code, enum machine_mode, enum machine_mode, rtx, rtx, rtx));
+extern rtx simplify_relational_operation PROTO((enum rtx_code, enum machine_mode, rtx, rtx));
+extern rtx nonlocal_label_rtx_list PROTO((void));
+extern rtx gen_move_insn PROTO((rtx, rtx));
+extern rtx gen_jump PROTO((rtx));
+extern rtx gen_beq PROTO((rtx));
+extern rtx gen_bge PROTO((rtx));
+extern rtx gen_ble PROTO((rtx));
+extern rtx gen_mem_addressof PROTO((rtx, union tree_node *));
+extern rtx eliminate_constant_term PROTO((rtx, rtx *));
+extern rtx expand_complex_abs PROTO((enum machine_mode, rtx, rtx, int));
+extern enum machine_mode choose_hard_reg_mode PROTO((int, int));
+extern int rtx_varies_p PROTO((rtx));
+extern int may_trap_p PROTO((rtx));
+extern int side_effects_p PROTO((rtx));
+extern int volatile_refs_p PROTO((rtx));
+extern int volatile_insn_p PROTO((rtx));
+extern void remove_note PROTO((rtx, rtx));
+extern int refers_to_regno_p PROTO((int, int, rtx, rtx *));
+extern int reg_overlap_mentioned_p PROTO((rtx, rtx));
+
+/* Functions in rtlanal.c */
+
+extern int rtx_unstable_p PROTO((rtx));
+extern int rtx_varies_p PROTO((rtx));
+extern int rtx_addr_varies_p PROTO((rtx));
+extern HOST_WIDE_INT get_integer_term PROTO((rtx));
+extern rtx get_related_value PROTO((rtx));
+extern int reg_mentioned_p PROTO((rtx, rtx));
+extern int reg_referenced_p PROTO((rtx, rtx));
+extern int reg_used_between_p PROTO((rtx, rtx, rtx));
+extern int reg_referenced_between_p PROTO((rtx, rtx, rtx));
+extern int reg_set_between_p PROTO((rtx, rtx, rtx));
+extern int modified_between_p PROTO((rtx, rtx, rtx));
+extern int no_labels_between_p PROTO((rtx, rtx));
+extern int modified_in_p PROTO((rtx, rtx));
+extern int reg_set_p PROTO((rtx, rtx));
+extern rtx single_set PROTO((rtx));
+extern rtx find_last_value PROTO((rtx, rtx *, rtx));
+extern int refers_to_regno_p PROTO((int, int, rtx, rtx *));
+extern int reg_overlap_mentioned_p PROTO((rtx, rtx));
+extern rtx find_use_as_address PROTO((rtx, rtx, HOST_WIDE_INT));
+extern void note_stores PROTO((rtx, void (*)()));
+extern rtx reg_set_last PROTO((rtx, rtx));
+extern int rtx_equal_p PROTO((rtx, rtx));
+extern int dead_or_set_p PROTO((rtx, rtx));
+extern int dead_or_set_regno_p PROTO((rtx, int));
+extern rtx find_reg_note PROTO((rtx, enum reg_note, rtx));
+extern rtx find_regno_note PROTO((rtx, enum reg_note, int));
+extern int find_reg_fusage PROTO((rtx, enum rtx_code, rtx));
+extern int find_regno_fusage PROTO((rtx, enum rtx_code, int));
+extern void remove_note PROTO((rtx, rtx));
+extern int side_effects_p PROTO((rtx));
+extern int volatile_refs_p PROTO((rtx));
+extern int volatile_insn_p PROTO((rtx));
+extern int may_trap_p PROTO((rtx));
+extern int inequality_comparison_p PROTO((rtx));
+extern rtx replace_rtx PROTO((rtx, rtx, rtx));
+extern rtx replace_regs PROTO((rtx, rtx *, int, int));
+extern int computed_jump_p PROTO((rtx));
/* Maximum number of parallel sets and clobbers in any insn in this fn.
Always at least 3, since the combiner could put that many togetherm
extern int max_parallel;
-extern int asm_noperands ();
-extern char *decode_asm_operands ();
+extern int asm_noperands PROTO((rtx));
+extern char *decode_asm_operands PROTO((rtx, rtx *, rtx **, char **, enum machine_mode *));
-#ifdef BITS_PER_WORD
-/* Conditional is to detect when config.h has been included. */
-extern enum reg_class reg_preferred_class ();
-#endif
+extern enum reg_class reg_preferred_class PROTO((int));
+extern enum reg_class reg_alternate_class PROTO((int));
-extern rtx get_first_nonparm_insn ();
+extern rtx get_first_nonparm_insn PROTO((void));
/* Standard pieces of rtx, to be substituted directly into things. */
-extern rtx pc_rtx;
-extern rtx cc0_rtx;
-extern rtx const0_rtx;
-extern rtx const1_rtx;
-extern rtx const2_rtx;
-extern rtx constm1_rtx;
+#define pc_rtx (&global_rtl.pc_val)
+#define cc0_rtx (&global_rtl.cc0_val)
+
+#define MAX_SAVED_CONST_INT 64
+extern struct rtx_def const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1];
+
+#define const0_rtx (&const_int_rtx[MAX_SAVED_CONST_INT])
+#define const1_rtx (&const_int_rtx[MAX_SAVED_CONST_INT+1])
+#define const2_rtx (&const_int_rtx[MAX_SAVED_CONST_INT+2])
+#define constm1_rtx (&const_int_rtx[MAX_SAVED_CONST_INT-1])
extern rtx const_true_rtx;
extern rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE];
#define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
#define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
+extern struct _global_rtl
+{
+ struct rtx_def pc_val, cc0_val;
+ struct rtx_def stack_pointer_val, frame_pointer_val;
+ struct rtx_def hard_frame_pointer_val;
+ struct rtx_def arg_pointer_val;
+ struct rtx_def virtual_incoming_args_val;
+ struct rtx_def virtual_stack_vars_val;
+ struct rtx_def virtual_stack_dynamic_val;
+ struct rtx_def virtual_outgoing_args_val;
+} global_rtl;
+
/* All references to certain hard regs, except those created
by allocating pseudo regs into them (when that's possible),
go through these unique rtx objects. */
-extern rtx stack_pointer_rtx;
-extern rtx frame_pointer_rtx;
-extern rtx arg_pointer_rtx;
+#define stack_pointer_rtx (&global_rtl.stack_pointer_val)
+#define frame_pointer_rtx (&global_rtl.frame_pointer_val)
+
extern rtx pic_offset_table_rtx;
extern rtx struct_value_rtx;
extern rtx struct_value_incoming_rtx;
extern rtx static_chain_rtx;
extern rtx static_chain_incoming_rtx;
+
+/* Include the RTL generation functions. */
+
+#ifndef NO_GENRTL_H
+#include "genrtl.h"
+#endif
+
+/* There are some RTL codes that require special attention; the
+ generation functions included above do the raw handling. If you
+ add to this list, modify special_rtx in gengenrtl.c as well. You
+ should also modify gen_rtx to use the special function. */
+
+extern rtx gen_rtx_CONST_INT PROTO((enum machine_mode, HOST_WIDE_INT));
+extern rtx gen_rtx_REG PROTO((enum machine_mode, int));
+extern rtx gen_rtx_MEM PROTO((enum machine_mode, rtx));
+
+/* We need the cast here to ensure that we get the same result both with
+ and without prototypes. */
+#define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (HOST_WIDE_INT) (N))
+
+
+/* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
+ is used to represent the frame pointer. This is because the
+ hard frame pointer and the automatic variables are separated by an amount
+ that cannot be determined until after register allocation. We can assume
+ that in this case ELIMINABLE_REGS will be defined, one action of which
+ will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
+#ifndef HARD_FRAME_POINTER_REGNUM
+#define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
+#endif
+
+/* For register elimination to work properly these hard_frame_pointer_rtx,
+ frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
+ the same register. */
+#if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM
+#define hard_frame_pointer_rtx (&global_rtl.frame_pointer_val)
+#else
+#define hard_frame_pointer_rtx (&global_rtl.hard_frame_pointer_val)
+#endif
+
+#if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
+#define arg_pointer_rtx (&global_rtl.frame_pointer_val)
+#else
+#if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
+#define arg_pointer_rtx (&global_rtl.hard_frame_pointer_val)
+#else
+#define arg_pointer_rtx (&global_rtl.arg_pointer_val)
+#endif
+#endif
+
/* Virtual registers are used during RTL generation to refer to locations into
the stack frame when the actual location isn't known until RTL generation
is complete. The routine instantiate_virtual_regs replaces these with
either by the caller or by the callee when pretending it was passed by the
caller. */
-extern rtx virtual_incoming_args_rtx;
+#define virtual_incoming_args_rtx (&global_rtl.virtual_incoming_args_val)
#define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
-/* If FRAME_GROWS_DOWNWARDS, this points to immediately above the first
+/* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
variable on the stack. Otherwise, it points to the first variable on
the stack. */
-extern rtx virtual_stack_vars_rtx;
+#define virtual_stack_vars_rtx (&global_rtl.virtual_stack_vars_val)
#define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
immediately after the stack pointer has been adjusted by the amount
desired. */
-extern rtx virtual_stack_dynamic_rtx;
+#define virtual_stack_dynamic_rtx (&global_rtl.virtual_stack_dynamic_val)
#define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
be written when the stack is pre-pushed (arguments pushed using push
insns always use sp). */
-extern rtx virtual_outgoing_args_rtx;
+#define virtual_outgoing_args_rtx (&global_rtl.virtual_outgoing_args_val)
#define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
#define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 3)
-extern rtx find_next_ref ();
-extern rtx *find_single_use ();
+extern rtx find_next_ref PROTO((rtx, rtx));
+extern rtx *find_single_use PROTO((rtx, rtx, rtx *));
+
+extern rtx output_constant_def PROTO((union tree_node *));
+extern rtx immed_real_const PROTO((union tree_node *));
+extern union tree_node *make_tree PROTO((union tree_node *, rtx));
+
+/* Abort routines */
+extern void fatal_insn_not_found PROTO((rtx));
+extern void fatal_insn PROTO((char *, rtx));
/* Define a default value for STORE_FLAG_VALUE. */
/* Indexed by pseudo register number, gives the rtx for that pseudo.
Allocated in parallel with regno_pointer_flag. */
extern rtx *regno_reg_rtx;
+
+/* Vector indexed by regno; contain the alignment in bytes and type
+ pointed to for a register that contains a pointer, if known. */
+extern char *regno_pointer_align;
+#define REGNO_POINTER_ALIGN(REGNO) regno_pointer_align[REGNO]
+
+/* 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 int rtx_to_tree_code PROTO((enum rtx_code));
+
+/* In rtlanal.c */
+extern int reg_set_p PROTO ((rtx, rtx));
+extern int reg_mentioned_p PROTO ((rtx, rtx));
+extern int reg_referenced_p PROTO ((rtx, rtx));
+extern int reg_used_between_p PROTO ((rtx, rtx, rtx));
+extern int reg_set_p PROTO ((rtx, rtx));
+extern int reg_referenced_between_p PROTO ((rtx, rtx, rtx));
+extern int reg_set_between_p PROTO ((rtx, rtx, rtx));
+extern int rtx_unstable_p PROTO ((rtx));
+extern int rtx_addr_varies_p PROTO ((rtx));
+extern int rtx_equal_p PROTO ((rtx, rtx));
+extern int inequality_comparisons_p PROTO ((rtx));
+extern int dead_or_set_p PROTO ((rtx, rtx));
+extern int dead_or_set_regno_p PROTO ((rtx, int));
+extern int no_labels_between_p PROTO ((rtx, rtx));
+extern int modified_between_p PROTO ((rtx, rtx, rtx));
+extern int modified_in_p PROTO ((rtx, rtx));
+
+/* In tree.c */
+extern void obfree PROTO ((char *));
+struct obstack;
+extern void gcc_obstack_init PROTO ((struct obstack *));
+extern void pop_obstacks PROTO ((void));
+extern void push_obstacks PROTO ((struct obstack *,
+ struct obstack *));
+#ifdef BUFSIZ
+extern int read_skip_spaces PROTO ((FILE *));
+#endif
+
+/* In cse.c */
+struct cse_basic_block_data;
+extern int rtx_cost PROTO ((rtx, enum rtx_code));
+extern void delete_trivially_dead_insns PROTO ((rtx, int));
+#ifdef BUFSIZ
+extern int cse_main PROTO ((rtx, int, int, FILE *));
+#endif
+extern void cse_end_of_basic_block PROTO ((rtx,
+ struct cse_basic_block_data *,
+ int, int, int));
+
+/* In jump.c */
+extern int comparison_dominates_p PROTO ((enum rtx_code, enum rtx_code));
+extern int condjump_p PROTO ((rtx));
+extern int simplejump_p PROTO ((rtx));
+extern int sets_cc0_p PROTO ((rtx));
+extern int invert_jump PROTO ((rtx, rtx));
+extern int rtx_renumbered_equal_p PROTO ((rtx, rtx));
+extern int true_regnum PROTO ((rtx));
+extern int redirect_jump PROTO ((rtx, rtx));
+extern void jump_optimize PROTO ((rtx, int, int, int));
+extern void thread_jumps PROTO ((rtx, int, int));
+extern int redirect_exp PROTO ((rtx *, rtx, rtx, rtx));
+extern int rtx_equal_for_thread_p PROTO ((rtx, rtx, rtx));
+extern int invert_exp PROTO ((rtx, rtx));
+extern int can_reverse_comparison_p PROTO ((rtx, rtx));
+extern void delete_for_peephole PROTO ((rtx, rtx));
+extern int condjump_in_parallel_p PROTO ((rtx));
+
+/* Flags for jump_optimize() */
+#define JUMP_CROSS_JUMP 1
+#define JUMP_NOOP_MOVES 1
+#define JUMP_AFTER_REGSCAN 1
+
+/* In emit-rtl.c. */
+extern int max_reg_num PROTO ((void));
+extern int max_label_num PROTO ((void));
+extern int get_first_label_num PROTO ((void));
+extern void delete_insns_since PROTO ((rtx));
+extern void mark_reg_pointer PROTO ((rtx, int));
+extern void mark_user_reg PROTO ((rtx));
+extern void reset_used_flags PROTO ((rtx));
+extern void reorder_insns PROTO ((rtx, rtx, rtx));
+extern int get_max_uid PROTO ((void));
+extern int in_sequence_p PROTO ((void));
+extern void force_next_line_note PROTO ((void));
+extern void init_emit PROTO ((void));
+extern void init_emit_once PROTO ((int));
+extern void push_topmost_sequence PROTO ((void));
+extern void pop_topmost_sequence PROTO ((void));
+extern int subreg_realpart_p PROTO ((rtx));
+extern void reverse_comparison PROTO ((rtx));
+extern void set_new_first_and_last_insn PROTO ((rtx, rtx));
+extern void set_new_first_and_last_label_num PROTO ((int, int));
+extern void unshare_all_rtl PROTO ((rtx));
+extern void set_last_insn PROTO ((rtx));
+extern void link_cc0_insns PROTO ((rtx));
+extern void add_insn PROTO ((rtx));
+extern void add_insn_before PROTO ((rtx, rtx));
+extern void add_insn_after PROTO ((rtx, rtx));
+extern void reorder_insns_with_line_notes PROTO ((rtx, rtx, rtx));
+extern void emit_insn_after_with_line_notes PROTO ((rtx, rtx, rtx));
+extern enum rtx_code classify_insn PROTO ((rtx));
+extern rtx emit PROTO ((rtx));
+/* Query and clear/ restore no_line_numbers. This is used by the
+ switch / case handling in stmt.c to give proper line numbers in
+ warnings about unreachable code. */
+int force_line_numbers PROTO((void));
+void restore_line_number_status PROTO((int old_value));
+
+/* In insn-emit.c */
+extern void add_clobbers PROTO ((rtx, int));
+
+/* In combine.c */
+extern void combine_instructions PROTO ((rtx, int));
+extern int extended_count PROTO ((rtx, enum machine_mode, int));
+extern rtx remove_death PROTO ((int, rtx));
+#ifdef BUFSIZ
+extern void dump_combine_stats PROTO ((FILE *));
+extern void dump_combine_total_stats PROTO ((FILE *));
+#endif
+
+/* In sched.c. */
+#ifdef BUFSIZ
+extern void schedule_insns PROTO ((FILE *));
+#endif
+#ifdef HAIFA
+extern void fix_sched_param PROTO ((char *, char *));
+#endif
+
+/* In print-rtl.c */
+extern void debug_rtx PROTO ((rtx));
+extern void debug_rtx_list PROTO ((rtx, int));
+extern rtx debug_rtx_find PROTO ((rtx, int));
+#ifdef BUFSIZ
+extern void print_rtl PROTO ((FILE *, rtx));
+extern void print_rtl_single PROTO ((FILE *, rtx));
+extern void print_inline_rtx PROTO ((FILE *, rtx, int));
+#endif
+
+/* In loop.c */
+extern void init_loop PROTO ((void));
+#ifdef BUFSIZ
+extern void loop_optimize PROTO ((rtx, FILE *, int));
+#endif
+extern void record_excess_regs PROTO ((rtx, rtx, rtx *));
+
+/* In function.c */
+extern void reposition_prologue_and_epilogue_notes PROTO ((rtx));
+extern void thread_prologue_and_epilogue_insns PROTO ((rtx));
+extern void use_variable PROTO ((rtx));
+extern HOST_WIDE_INT get_frame_size PROTO ((void));
+extern void preserve_rtl_expr_result PROTO ((rtx));
+extern void mark_temp_addr_taken PROTO ((rtx));
+extern void update_temp_slot_address PROTO ((rtx, rtx));
+extern void use_variable_after PROTO ((rtx, rtx));
+extern void purge_addressof PROTO ((rtx));
+
+/* In reload.c */
+extern int operands_match_p PROTO ((rtx, rtx));
+extern int safe_from_earlyclobber PROTO ((rtx, rtx));
+extern int strict_memory_address_p PROTO ((enum machine_mode, rtx));
+
+/* In recog.c */
+extern int memory_address_p PROTO ((enum machine_mode, rtx));
+extern int constrain_operands PROTO ((int, int));
+extern int mode_dependent_address_p PROTO ((rtx));
+extern void init_recog_no_volatile PROTO ((void));
+extern int offsettable_memref_p PROTO ((rtx));
+extern int offsettable_nonstrict_memref_p PROTO ((rtx));
+extern int reg_fits_class_p PROTO ((rtx, register enum reg_class,
+ int, enum machine_mode));
+extern int check_asm_operands PROTO ((rtx));
+extern int address_operand PROTO ((rtx, enum machine_mode));
+extern int const_int_operand PROTO ((rtx, enum machine_mode));
+extern int const_double_operand PROTO ((rtx, enum machine_mode));
+extern int general_operand PROTO ((rtx, enum machine_mode));
+extern int immediate_operand PROTO ((rtx, enum machine_mode));
+extern int nonimmediate_operand PROTO ((rtx, enum machine_mode));
+extern int memory_operand PROTO ((rtx, enum machine_mode));
+extern int nonmemory_operand PROTO ((rtx, enum machine_mode));
+extern int push_operand PROTO ((rtx, enum machine_mode));
+extern int register_operand PROTO ((rtx, enum machine_mode));
+extern int scratch_operand PROTO ((rtx, enum machine_mode));
+extern int indirect_operand PROTO ((rtx, enum machine_mode));
+extern int mode_independent_operand PROTO ((rtx, enum machine_mode));
+extern int comparison_operator PROTO ((rtx, enum machine_mode));
+extern void init_recog_no_volatile PROTO ((void));
+extern void init_recog PROTO ((void));
+extern int validate_replace_rtx PROTO ((rtx, rtx, rtx));
+extern int offsettable_address_p PROTO ((int, enum machine_mode, rtx));
+extern int next_insn_tests_no_inequality PROTO ((rtx));
+extern int recog_memoized PROTO ((rtx));
+extern int validate_change PROTO ((rtx, rtx *, rtx, int));
+extern int apply_change_group PROTO ((void));
+extern void cancel_changes PROTO ((int));
+extern int num_validated_changes PROTO ((void));
+
+/* In insn-recog.c */
+extern int recog PROTO ((rtx, rtx, int *));
+
+/* In stmt.c */
+extern void expand_null_return PROTO((void));
+extern void emit_jump PROTO ((rtx));
+extern int preserve_subexpressions_p PROTO ((void));
+
+/* In expr.c */
+extern void init_expr_once PROTO ((void));
+
+/* In stupid.c */
+#ifdef BUFSIZ
+extern void stupid_life_analysis PROTO ((rtx, int, FILE *));
+#endif
+
+/* In flow.c */
+extern void allocate_for_life_analysis PROTO ((void));
+extern void recompute_reg_usage PROTO ((rtx));
+#ifdef BUFSIZ
+extern void dump_flow_info PROTO ((FILE *));
+#endif
+
+/* In expmed.c */
+extern void init_expmed PROTO ((void));
+extern void expand_inc PROTO ((rtx, rtx));
+extern void expand_dec PROTO ((rtx, rtx));
+extern rtx expand_mult_highpart PROTO ((enum machine_mode, rtx,
+ unsigned HOST_WIDE_INT, rtx,
+ int, int));
+
+/* In gcse.c */
+#ifdef BUFSIZ
+extern void gcse_main PROTO ((rtx, FILE *));
+#endif
+
+/* In global.c */
+extern void mark_elimination PROTO ((int, int));
+#ifdef BUFSIZ
+extern int global_alloc PROTO ((FILE *));
+extern void dump_global_regs PROTO ((FILE *));
+#endif
+#ifdef HARD_CONST
+extern void retry_global_alloc PROTO ((int, HARD_REG_SET));
+#endif
+
+/* In regclass.c */
+extern int reg_classes_intersect_p PROTO ((enum reg_class, enum reg_class));
+extern int reg_class_subset_p PROTO ((enum reg_class, enum reg_class));
+extern void globalize_reg PROTO ((int));
+extern void init_regs PROTO ((void));
+extern void init_reg_sets PROTO ((void));
+extern void regset_release_memory PROTO ((void));
+extern void regclass_init PROTO ((void));
+extern void regclass PROTO ((rtx, int));
+extern void reg_scan PROTO ((rtx, int, int));
+extern void reg_scan_update PROTO ((rtx, rtx, int));
+extern void fix_register PROTO ((char *, int, int));
+
+/* In regmove.c */
+#ifdef BUFSIZ
+extern void regmove_optimize PROTO ((rtx, int, FILE *));
+#endif
+
+/* In reorg.c */
+#ifdef BUFSIZ
+extern void dbr_schedule PROTO ((rtx, FILE *));
+#endif
+
+/* In optabs.c */
+extern void init_optabs PROTO ((void));
+
+/* In local-alloc.c */
+#ifdef BUFSIZ
+extern void dump_local_alloc PROTO ((FILE *));
+#endif
+extern void local_alloc PROTO ((void));
+
+/* In reload1.c */
+extern void reload_cse_regs PROTO ((rtx));
+extern void init_reload PROTO ((void));
+extern void mark_home_live PROTO ((int));
+#ifdef BUFSIZ
+extern int reload PROTO ((rtx, int, FILE *));
+#endif
+
+/* In caller-save.c */
+extern void init_caller_save PROTO ((void));
+
+/* In profile.c */
+extern void init_branch_prob PROTO ((char *));
+#ifdef BUFSIZ
+extern void branch_prob PROTO ((rtx, FILE *));
+extern void end_branch_prob PROTO ((FILE *));
+#endif
+extern void output_func_start_profiler PROTO ((void));
+
+/* In reg-stack.c */
+#ifdef BUFSIZ
+extern void reg_to_stack PROTO ((rtx, FILE *));
+#endif
+extern int stack_regs_mentioned_p PROTO ((rtx));
+
+/* In fold-const.c */
+extern int add_double PROTO ((HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT *, HOST_WIDE_INT *));
+extern int neg_double PROTO ((HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT *, HOST_WIDE_INT *));
+extern int mul_double PROTO ((HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT *, HOST_WIDE_INT *));
+extern void lshift_double PROTO ((HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT, int, HOST_WIDE_INT *,
+ HOST_WIDE_INT *, int));
+extern void rshift_double PROTO ((HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT, int,
+ HOST_WIDE_INT *, HOST_WIDE_INT *, int));
+extern void lrotate_double PROTO ((HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT, int, HOST_WIDE_INT *,
+ HOST_WIDE_INT *));
+extern void rrotate_double PROTO ((HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT, int, HOST_WIDE_INT *,
+ HOST_WIDE_INT *));
+
+/* In calls.c */
+/* Emit library call. */
+extern void emit_library_call PVPROTO ((rtx, int, enum machine_mode,
+ int, ...));
+extern rtx emit_library_call_value PVPROTO((rtx, rtx, int,
+ enum machine_mode,
+ int, ...));
+
+/* In unroll.c */
+extern int set_dominates_use PROTO ((int, int, int, rtx, rtx));
+
+/* In varasm.c */
+extern void bss_section PROTO ((void));
+extern int in_data_section PROTO ((void));
+extern int supports_one_only PROTO ((void));
+
+/* In rtl.c */
+extern void init_rtl PROTO ((void));
+extern void rtx_free PROTO ((rtx));
+
+/* In alias.c */
+extern int true_dependence PROTO ((rtx, enum machine_mode, rtx,
+ int (*)(rtx)));
+extern int read_dependence PROTO ((rtx, rtx));
+extern int anti_dependence PROTO ((rtx, rtx));
+extern int output_dependence PROTO ((rtx, rtx));
+extern void init_alias_once PROTO ((void));
+extern void init_alias_analysis PROTO ((void));
+extern void end_alias_analysis PROTO ((void));
+
+extern void record_base_value PROTO ((int, rtx, int));
+
+#endif /* _RTL_H */
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