/* Generate code from machine description to recognize rtl as insns.
Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1997, 1998,
- 1999, 2000, 2001 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
This program also generates the function `split_insns', which
returns 0 if the rtl could not be split, or it returns the split
- rtl in a SEQUENCE.
+ rtl as an INSN list.
This program also generates the function `peephole2_insns', which
returns 0 if the rtl could not be matched. If there was a match,
- the new rtl is returned in a SEQUENCE, and LAST_INSN will point
+ the new rtl is returned in an INSN list, and LAST_INSN will point
to the last recognized insn in the old sequence. */
-#include "hconfig.h"
+#include "bconfig.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
#include "errors.h"
#include "gensupport.h"
static int insn_name_ptr_size = 0;
/* A listhead of decision trees. The alternatives to a node are kept
- in a doublely-linked list so we can easily add nodes to the proper
+ in a doubly-linked list so we can easily add nodes to the proper
place when merging. */
struct decision_head
{
DT_mode, DT_code, DT_veclen,
DT_elt_zero_int, DT_elt_one_int, DT_elt_zero_wide, DT_elt_zero_wide_safe,
+ DT_const_int,
DT_veclen_ge, DT_dup, DT_pred, DT_c_test,
DT_accept_op, DT_accept_insn
} type;
of tree nodes. Also, if a predicate can match only one code, we can
hardwire that code into the node testing the predicate. */
-static struct pred_table
+static const struct pred_table
{
- const char *name;
- RTX_CODE codes[NUM_RTX_CODE];
+ const char *const name;
+ const RTX_CODE codes[NUM_RTX_CODE];
} preds[] = {
{"general_operand", {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
- LABEL_REF, SUBREG, REG, MEM}},
+ LABEL_REF, SUBREG, REG, MEM, ADDRESSOF}},
#ifdef PREDICATE_CODES
PREDICATE_CODES
#endif
{"address_operand", {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
- LABEL_REF, SUBREG, REG, MEM, PLUS, MINUS, MULT}},
- {"register_operand", {SUBREG, REG}},
- {"pmode_register_operand", {SUBREG, REG}},
+ LABEL_REF, SUBREG, REG, MEM, ADDRESSOF,
+ PLUS, MINUS, MULT}},
+ {"register_operand", {SUBREG, REG, ADDRESSOF}},
+ {"pmode_register_operand", {SUBREG, REG, ADDRESSOF}},
{"scratch_operand", {SCRATCH, REG}},
{"immediate_operand", {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
LABEL_REF}},
{"const_int_operand", {CONST_INT}},
{"const_double_operand", {CONST_INT, CONST_DOUBLE}},
- {"nonimmediate_operand", {SUBREG, REG, MEM}},
+ {"nonimmediate_operand", {SUBREG, REG, MEM, ADDRESSOF}},
{"nonmemory_operand", {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
- LABEL_REF, SUBREG, REG}},
+ LABEL_REF, SUBREG, REG, ADDRESSOF}},
{"push_operand", {MEM}},
{"pop_operand", {MEM}},
{"memory_operand", {SUBREG, MEM}},
{"indirect_operand", {SUBREG, MEM}},
{"comparison_operator", {EQ, NE, LE, LT, GE, GT, LEU, LTU, GEU, GTU,
UNORDERED, ORDERED, UNEQ, UNGE, UNGT, UNLE,
- UNLT, LTGT}},
- {"mode_independent_operand", {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
- LABEL_REF, SUBREG, REG, MEM}}
+ UNLT, LTGT}}
};
#define NUM_KNOWN_PREDS ARRAY_SIZE (preds)
#define NUM_SPECIAL_MODE_PREDS ARRAY_SIZE (special_mode_pred_table)
static struct decision *new_decision
- PARAMS ((const char *, struct decision_head *));
+ (const char *, struct decision_head *);
static struct decision_test *new_decision_test
- PARAMS ((enum decision_type, struct decision_test ***));
+ (enum decision_type, struct decision_test ***);
static rtx find_operand
- PARAMS ((rtx, int));
+ (rtx, int, rtx);
static rtx find_matching_operand
- PARAMS ((rtx, int));
+ (rtx, int);
static void validate_pattern
- PARAMS ((rtx, rtx, rtx, int));
+ (rtx, rtx, rtx, int);
static struct decision *add_to_sequence
- PARAMS ((rtx, struct decision_head *, const char *, enum routine_type, int));
+ (rtx, struct decision_head *, const char *, enum routine_type, int);
-static int maybe_both_true_mode
- PARAMS ((enum machine_mode, enum machine_mode));
static int maybe_both_true_2
- PARAMS ((struct decision_test *, struct decision_test *));
+ (struct decision_test *, struct decision_test *);
static int maybe_both_true_1
- PARAMS ((struct decision_test *, struct decision_test *));
+ (struct decision_test *, struct decision_test *);
static int maybe_both_true
- PARAMS ((struct decision *, struct decision *, int));
+ (struct decision *, struct decision *, int);
static int nodes_identical_1
- PARAMS ((struct decision_test *, struct decision_test *));
+ (struct decision_test *, struct decision_test *);
static int nodes_identical
- PARAMS ((struct decision *, struct decision *));
+ (struct decision *, struct decision *);
static void merge_accept_insn
- PARAMS ((struct decision *, struct decision *));
+ (struct decision *, struct decision *);
static void merge_trees
- PARAMS ((struct decision_head *, struct decision_head *));
+ (struct decision_head *, struct decision_head *);
static void factor_tests
- PARAMS ((struct decision_head *));
+ (struct decision_head *);
static void simplify_tests
- PARAMS ((struct decision_head *));
+ (struct decision_head *);
static int break_out_subroutines
- PARAMS ((struct decision_head *, int));
+ (struct decision_head *, int);
static void find_afterward
- PARAMS ((struct decision_head *, struct decision *));
+ (struct decision_head *, struct decision *);
static void change_state
- PARAMS ((const char *, const char *, struct decision *, const char *));
+ (const char *, const char *, struct decision *, const char *);
static void print_code
- PARAMS ((enum rtx_code));
+ (enum rtx_code);
static void write_afterward
- PARAMS ((struct decision *, struct decision *, const char *));
+ (struct decision *, struct decision *, const char *);
static struct decision *write_switch
- PARAMS ((struct decision *, int));
+ (struct decision *, int);
static void write_cond
- PARAMS ((struct decision_test *, int, enum routine_type));
+ (struct decision_test *, int, enum routine_type);
static void write_action
- PARAMS ((struct decision *, struct decision_test *, int, int,
- struct decision *, enum routine_type));
+ (struct decision *, struct decision_test *, int, int,
+ struct decision *, enum routine_type);
static int is_unconditional
- PARAMS ((struct decision_test *, enum routine_type));
+ (struct decision_test *, enum routine_type);
static int write_node
- PARAMS ((struct decision *, int, enum routine_type));
+ (struct decision *, int, enum routine_type);
static void write_tree_1
- PARAMS ((struct decision_head *, int, enum routine_type));
+ (struct decision_head *, int, enum routine_type);
static void write_tree
- PARAMS ((struct decision_head *, const char *, enum routine_type, int));
+ (struct decision_head *, const char *, enum routine_type, int);
static void write_subroutine
- PARAMS ((struct decision_head *, enum routine_type));
+ (struct decision_head *, enum routine_type);
static void write_subroutines
- PARAMS ((struct decision_head *, enum routine_type));
+ (struct decision_head *, enum routine_type);
static void write_header
- PARAMS ((void));
+ (void);
static struct decision_head make_insn_sequence
- PARAMS ((rtx, enum routine_type));
+ (rtx, enum routine_type);
static void process_tree
- PARAMS ((struct decision_head *, enum routine_type));
+ (struct decision_head *, enum routine_type);
static void record_insn_name
- PARAMS ((int, const char *));
+ (int, const char *);
static void debug_decision_0
- PARAMS ((struct decision *, int, int));
+ (struct decision *, int, int);
static void debug_decision_1
- PARAMS ((struct decision *, int));
+ (struct decision *, int);
static void debug_decision_2
- PARAMS ((struct decision_test *));
+ (struct decision_test *);
extern void debug_decision
- PARAMS ((struct decision *));
+ (struct decision *);
extern void debug_decision_list
- PARAMS ((struct decision *));
+ (struct decision *);
\f
/* Create a new node in sequence after LAST. */
static struct decision *
-new_decision (position, last)
- const char *position;
- struct decision_head *last;
+new_decision (const char *position, struct decision_head *last)
{
- register struct decision *new
- = (struct decision *) xmalloc (sizeof (struct decision));
+ struct decision *new = xcalloc (1, sizeof (struct decision));
- memset (new, 0, sizeof (*new));
new->success = *last;
new->position = xstrdup (position);
new->number = next_number++;
/* Create a new test and link it in at PLACE. */
static struct decision_test *
-new_decision_test (type, pplace)
- enum decision_type type;
- struct decision_test ***pplace;
+new_decision_test (enum decision_type type, struct decision_test ***pplace)
{
struct decision_test **place = *pplace;
struct decision_test *test;
- test = (struct decision_test *) xmalloc (sizeof (*test));
+ test = xmalloc (sizeof (*test));
test->next = *place;
test->type = type;
*place = test;
return test;
}
-/* Search for and return operand N. */
+/* Search for and return operand N, stop when reaching node STOP. */
static rtx
-find_operand (pattern, n)
- rtx pattern;
- int n;
+find_operand (rtx pattern, int n, rtx stop)
{
const char *fmt;
RTX_CODE code;
int i, j, len;
rtx r;
+ if (pattern == stop)
+ return stop;
+
code = GET_CODE (pattern);
if ((code == MATCH_SCRATCH
- || code == MATCH_INSN
|| code == MATCH_OPERAND
|| code == MATCH_OPERATOR
|| code == MATCH_PARALLEL)
switch (fmt[i])
{
case 'e': case 'u':
- if ((r = find_operand (XEXP (pattern, i), n)) != NULL_RTX)
+ if ((r = find_operand (XEXP (pattern, i), n, stop)) != NULL_RTX)
return r;
break;
case 'V':
if (! XVEC (pattern, i))
break;
- /* FALLTHRU */
+ /* Fall through. */
case 'E':
for (j = 0; j < XVECLEN (pattern, i); j++)
- if ((r = find_operand (XVECEXP (pattern, i, j), n)) != NULL_RTX)
+ if ((r = find_operand (XVECEXP (pattern, i, j), n, stop))
+ != NULL_RTX)
return r;
break;
constraint for operand N. */
static rtx
-find_matching_operand (pattern, n)
- rtx pattern;
- int n;
+find_matching_operand (rtx pattern, int n)
{
const char *fmt;
RTX_CODE code;
case 'V':
if (! XVEC (pattern, i))
break;
- /* FALLTHRU */
+ /* Fall through. */
case 'E':
for (j = 0; j < XVECLEN (pattern, i); j++)
'+' within a context that requires in-out constraints. */
static void
-validate_pattern (pattern, insn, set, set_code)
- rtx pattern;
- rtx insn;
- rtx set;
- int set_code;
+validate_pattern (rtx pattern, rtx insn, rtx set, int set_code)
{
const char *fmt;
RTX_CODE code;
{
case MATCH_SCRATCH:
return;
-
- case MATCH_INSN:
+ case MATCH_DUP:
+ case MATCH_OP_DUP:
+ case MATCH_PAR_DUP:
+ if (find_operand (insn, XINT (pattern, 0), pattern) == pattern)
+ {
+ message_with_line (pattern_lineno,
+ "operand %i duplicated before defined",
+ XINT (pattern, 0));
+ error_count++;
+ }
+ break;
case MATCH_OPERAND:
case MATCH_OPERATOR:
{
if (c != REG
&& c != SUBREG
&& c != MEM
+ && c != ADDRESSOF
&& c != CONCAT
&& c != PARALLEL
&& c != STRICT_LOW_PART)
{
const char constraints0 = XSTR (pattern, 2)[0];
- /* In DEFINE_EXPAND, DEFINE_SPLIT, and DEFINE_PEEPHOLE2, we
+ /* In DEFINE_EXPAND, DEFINE_SPLIT, and DEFINE_PEEPHOLE2, we
don't use the MATCH_OPERAND constraint, only the predicate.
This is confusing to folks doing new ports, so help them
not make the mistake. */
"warning: constraints not supported in %s",
rtx_name[GET_CODE (insn)]);
}
-
+
/* A MATCH_OPERAND that is a SET should have an output reload. */
else if (set && constraints0)
{
else if (constraints0 != '=' && constraints0 != '+')
{
message_with_line (pattern_lineno,
- "operand %d missing output reload",
+ "operand %d missing output reload",
XINT (pattern, 0));
error_count++;
}
if (GET_CODE (dest) == STRICT_LOW_PART)
dest = XEXP (dest, 0);
- /* Find the referant for a DUP. */
+ /* Find the referent for a DUP. */
if (GET_CODE (dest) == MATCH_DUP
|| GET_CODE (dest) == MATCH_OP_DUP
|| GET_CODE (dest) == MATCH_PAR_DUP)
- dest = find_operand (insn, XINT (dest, 0));
+ dest = find_operand (insn, XINT (dest, 0), NULL);
if (GET_CODE (src) == MATCH_DUP
|| GET_CODE (src) == MATCH_OP_DUP
|| GET_CODE (src) == MATCH_PAR_DUP)
- src = find_operand (insn, XINT (src, 0));
+ src = find_operand (insn, XINT (src, 0), NULL);
dmode = GET_MODE (dest);
smode = GET_MODE (src);
A pointer to the final node in the chain is returned. */
static struct decision *
-add_to_sequence (pattern, last, position, insn_type, top)
- rtx pattern;
- struct decision_head *last;
- const char *position;
- enum routine_type insn_type;
- int top;
+add_to_sequence (rtx pattern, struct decision_head *last, const char *position,
+ enum routine_type insn_type, int top)
{
RTX_CODE code;
struct decision *this, *sub;
struct decision_test *test;
struct decision_test **place;
char *subpos;
- register size_t i;
- register const char *fmt;
+ size_t i;
+ const char *fmt;
int depth = strlen (position);
int len;
enum machine_mode mode;
if (depth > max_depth)
max_depth = depth;
- subpos = (char *) xmalloc (depth + 2);
+ subpos = xmalloc (depth + 2);
strcpy (subpos, position);
subpos[depth + 1] = 0;
beyond the end of the vector. */
test = new_decision_test (DT_veclen_ge, &place);
test->u.veclen = XVECLEN (pattern, 2);
- /* FALLTHRU */
+ /* Fall through. */
case MATCH_OPERAND:
case MATCH_SCRATCH:
case MATCH_OPERATOR:
- case MATCH_INSN:
{
const char *pred_name;
RTX_CODE was_code = code;
case 'E':
{
- register int j;
+ int j;
for (j = 0; j < XVECLEN (pattern, i); j++)
{
subpos[depth] = 'a' + j;
return sub;
}
\f
-/* A subroutine of maybe_both_true; compares two modes.
- Returns > 0 for "definitely both true" and < 0 for "maybe both true". */
-
-static int
-maybe_both_true_mode (m1, m2)
- enum machine_mode m1, m2;
-{
- enum mode_class other_mode_class;
-
- /* Pmode is not a distinct mode. We do know that it is
- either MODE_INT or MODE_PARTIAL_INT though. */
- if (m1 == Pmode)
- other_mode_class = GET_MODE_CLASS (m2);
- else if (m2 == Pmode)
- other_mode_class = GET_MODE_CLASS (m1);
- else
- return m1 == m2;
-
- return (other_mode_class == MODE_INT
- || other_mode_class == MODE_PARTIAL_INT
- ? -1 : 0);
-}
-
/* A subroutine of maybe_both_true; examines only one test.
Returns > 0 for "definitely both true" and < 0 for "maybe both true". */
static int
-maybe_both_true_2 (d1, d2)
- struct decision_test *d1, *d2;
+maybe_both_true_2 (struct decision_test *d1, struct decision_test *d2)
{
if (d1->type == d2->type)
{
switch (d1->type)
{
case DT_mode:
- return maybe_both_true_mode (d1->u.mode, d2->u.mode);
+ return d1->u.mode == d2->u.mode;
case DT_code:
return d1->u.code == d2->u.code;
{
if (d2->type == DT_mode)
{
- if (maybe_both_true_mode (d1->u.pred.mode, d2->u.mode) == 0
+ if (d1->u.pred.mode != d2->u.mode
/* The mode of an address_operand predicate is the
mode of the memory, not the operand. It can only
be used for testing the predicate, so we must
Returns > 0 for "definitely both true" and < 0 for "maybe both true". */
static int
-maybe_both_true_1 (d1, d2)
- struct decision_test *d1, *d2;
+maybe_both_true_1 (struct decision_test *d1, struct decision_test *d2)
{
struct decision_test *t1, *t2;
/* A match_operand with no predicate can match anything. Recognize
- this by the existance of a lone DT_accept_op test. */
+ this by the existence of a lone DT_accept_op test. */
if (d1->type == DT_accept_op || d2->type == DT_accept_op)
return 1;
D1 and D2. Otherwise, return 1 (it may be that there is an RTL that
can match both or just that we couldn't prove there wasn't such an RTL).
- TOPLEVEL is non-zero if we are to only look at the top level and not
+ TOPLEVEL is nonzero if we are to only look at the top level and not
recursively descend. */
static int
-maybe_both_true (d1, d2, toplevel)
- struct decision *d1, *d2;
- int toplevel;
+maybe_both_true (struct decision *d1, struct decision *d2,
+ int toplevel)
{
struct decision *p1, *p2;
int cmp;
if (cmp != 0)
{
if (toplevel)
- abort();
+ abort ();
/* If the d2->position was lexically lower, swap. */
if (cmp > 0)
/* A subroutine of nodes_identical. Examine two tests for equivalence. */
static int
-nodes_identical_1 (d1, d2)
- struct decision_test *d1, *d2;
+nodes_identical_1 (struct decision_test *d1, struct decision_test *d2)
{
switch (d1->type)
{
consider different orderings on the tests. */
static int
-nodes_identical (d1, d2)
- struct decision *d1, *d2;
+nodes_identical (struct decision *d1, struct decision *d2)
{
struct decision_test *t1, *t2;
source machine description. */
static void
-merge_accept_insn (oldd, addd)
- struct decision *oldd, *addd;
+merge_accept_insn (struct decision *oldd, struct decision *addd)
{
struct decision_test *old, *add;
/* Merge two decision trees OLDH and ADDH, modifying OLDH destructively. */
static void
-merge_trees (oldh, addh)
- struct decision_head *oldh, *addh;
+merge_trees (struct decision_head *oldh, struct decision_head *addh)
{
struct decision *next, *add;
(depending on the test type) to emit switch statements later. */
static void
-factor_tests (head)
- struct decision_head *head;
+factor_tests (struct decision_head *head)
{
struct decision *first, *next;
predicates, remove them. */
static void
-simplify_tests (head)
- struct decision_head *head;
+simplify_tests (struct decision_head *head)
{
struct decision *tree;
that is generated. */
static int
-break_out_subroutines (head, initial)
- struct decision_head *head;
- int initial;
+break_out_subroutines (struct decision_head *head, int initial)
{
int size = 0;
struct decision *sub;
when p is true. */
static void
-find_afterward (head, real_afterward)
- struct decision_head *head;
- struct decision *real_afterward;
+find_afterward (struct decision_head *head, struct decision *real_afterward)
{
struct decision *p, *q, *afterward;
- /* We can't propogate alternatives across subroutine boundaries.
+ /* We can't propagate alternatives across subroutine boundaries.
This is not incorrect, merely a minor optimization loss. */
p = head->first;
\f
/* Assuming that the state of argument is denoted by OLDPOS, take whatever
actions are necessary to move to NEWPOS. If we fail to move to the
- new state, branch to node AFTERWARD if non-zero, otherwise return.
+ new state, branch to node AFTERWARD if nonzero, otherwise return.
Failure to move to the new state can only occur if we are trying to
match multiple insns and we try to step past the end of the stream. */
static void
-change_state (oldpos, newpos, afterward, indent)
- const char *oldpos;
- const char *newpos;
- struct decision *afterward;
- const char *indent;
+change_state (const char *oldpos, const char *newpos,
+ struct decision *afterward, const char *indent)
{
int odepth = strlen (oldpos);
int ndepth = strlen (newpos);
/* Hunt for the last [A-Z] in both strings. */
for (old_has_insn = odepth - 1; old_has_insn >= 0; --old_has_insn)
- if (oldpos[old_has_insn] >= 'A' && oldpos[old_has_insn] <= 'Z')
+ if (ISUPPER (oldpos[old_has_insn]))
break;
for (new_has_insn = ndepth - 1; new_has_insn >= 0; --new_has_insn)
- if (newpos[new_has_insn] >= 'A' && newpos[new_has_insn] <= 'Z')
+ if (ISUPPER (newpos[new_has_insn]))
break;
/* Go down to desired level. */
while (depth < ndepth)
{
/* It's a different insn from the first one. */
- if (newpos[depth] >= 'A' && newpos[depth] <= 'Z')
+ if (ISUPPER (newpos[depth]))
{
/* We can only fail if we're moving down the tree. */
if (old_has_insn >= 0 && oldpos[old_has_insn] >= newpos[depth])
}
printf ("%sx%d = PATTERN (tem);\n", indent, depth + 1);
}
- else if (newpos[depth] >= 'a' && newpos[depth] <= 'z')
+ else if (ISLOWER (newpos[depth]))
printf ("%sx%d = XVECEXP (x%d, 0, %d);\n",
indent, depth + 1, depth, newpos[depth] - 'a');
else
the name. */
static void
-print_code (code)
- enum rtx_code code;
+print_code (enum rtx_code code)
{
- register const char *p;
+ const char *p;
for (p = GET_RTX_NAME (code); *p; p++)
putchar (TOUPPER (*p));
}
/* Emit code to cross an afterward link -- change state and branch. */
static void
-write_afterward (start, afterward, indent)
- struct decision *start;
- struct decision *afterward;
- const char *indent;
+write_afterward (struct decision *start, struct decision *afterward,
+ const char *indent)
{
if (!afterward || start->subroutine_number > 0)
printf("%sgoto ret0;\n", indent);
}
}
+/* Emit a HOST_WIDE_INT as an integer constant expression. We need to take
+ special care to avoid "decimal constant is so large that it is unsigned"
+ warnings in the resulting code. */
+
+static void
+print_host_wide_int (HOST_WIDE_INT val)
+{
+ HOST_WIDE_INT min = (unsigned HOST_WIDE_INT)1 << (HOST_BITS_PER_WIDE_INT-1);
+ if (val == min)
+ printf ("(" HOST_WIDE_INT_PRINT_DEC_C "-1)", val + 1);
+ else
+ printf (HOST_WIDE_INT_PRINT_DEC_C, val);
+}
+
/* Emit a switch statement, if possible, for an initial sequence of
nodes at START. Return the first node yet untested. */
static struct decision *
-write_switch (start, depth)
- struct decision *start;
- int depth;
+write_switch (struct decision *start, int depth)
{
struct decision *p = start;
enum decision_type type = p->tests->type;
|| type == DT_elt_one_int
|| type == DT_elt_zero_wide_safe)
{
- /* Pmode may not be a compile-time constant. */
- if (type == DT_mode && p->tests->u.mode == Pmode)
- return p;
+ const char *indent = "";
- printf (" switch (");
+ /* We cast switch parameter to integer, so we must ensure that the value
+ fits. */
+ if (type == DT_elt_zero_wide_safe)
+ {
+ indent = " ";
+ printf(" if ((int) XWINT (x%d, 0) == XWINT (x%d, 0))\n", depth, depth);
+ }
+ printf ("%s switch (", indent);
switch (type)
{
case DT_mode:
default:
abort ();
}
- printf (")\n {\n");
+ printf (")\n%s {\n", indent);
do
{
if (nodes_identical_1 (p->tests, q->tests))
goto case_done;
- /* Pmode may not be a compile-time constant. */
- if (type == DT_mode && p->tests->u.mode == Pmode)
- goto case_done;
-
if (p != start && p->need_label && needs_label == NULL)
needs_label = p;
- printf (" case ");
+ printf ("%s case ", indent);
switch (type)
{
case DT_mode:
case DT_elt_one_int:
case DT_elt_zero_wide:
case DT_elt_zero_wide_safe:
- printf (HOST_WIDE_INT_PRINT_DEC, p->tests->u.intval);
+ print_host_wide_int (p->tests->u.intval);
break;
default:
abort ();
}
- printf (":\n goto L%d;\n", p->success.first->number);
+ printf (":\n%s goto L%d;\n", indent, p->success.first->number);
p->success.first->need_label = 1;
p = p->next;
while (p && p->tests->type == type && !p->tests->next);
case_done:
- printf (" default:\n break;\n }\n");
+ printf ("%s default:\n%s break;\n%s }\n",
+ indent, indent, indent);
return needs_label != NULL ? needs_label : p;
}
else
{
- /* None of the other tests are ameanable. */
+ /* None of the other tests are amenable. */
return p;
}
}
/* Emit code for one test. */
static void
-write_cond (p, depth, subroutine_type)
- struct decision_test *p;
- int depth;
- enum routine_type subroutine_type;
+write_cond (struct decision_test *p, int depth,
+ enum routine_type subroutine_type)
{
switch (p->type)
{
case DT_elt_zero_wide:
case DT_elt_zero_wide_safe:
printf ("XWINT (x%d, 0) == ", depth);
- printf (HOST_WIDE_INT_PRINT_DEC, p->u.intval);
+ print_host_wide_int (p->u.intval);
+ break;
+
+ case DT_const_int:
+ printf ("x%d == const_int_rtx[MAX_SAVED_CONST_INT + (%d)]",
+ depth, (int) p->u.intval);
break;
case DT_veclen_ge:
perform a state change. For the `accept' tests we must do more work. */
static void
-write_action (p, test, depth, uncond, success, subroutine_type)
- struct decision *p;
- struct decision_test *test;
- int depth, uncond;
- struct decision *success;
- enum routine_type subroutine_type;
+write_action (struct decision *p, struct decision_test *test,
+ int depth, int uncond, struct decision *success,
+ enum routine_type subroutine_type)
{
const char *indent;
int want_close = 0;
int match_len = 0, i;
for (i = strlen (p->position) - 1; i >= 0; --i)
- if (p->position[i] >= 'A' && p->position[i] <= 'Z')
+ if (ISUPPER (p->position[i]))
{
match_len = p->position[i] - 'A';
break;
/* ??? is_unconditional is a stupid name for a tri-state function. */
static int
-is_unconditional (t, subroutine_type)
- struct decision_test *t;
- enum routine_type subroutine_type;
+is_unconditional (struct decision_test *t, enum routine_type subroutine_type)
{
if (t->type == DT_accept_op)
return 1;
Return true if there is no fallthru path. */
static int
-write_node (p, depth, subroutine_type)
- struct decision *p;
- int depth;
- enum routine_type subroutine_type;
+write_node (struct decision *p, int depth,
+ enum routine_type subroutine_type)
{
struct decision_test *test, *last_test;
int uncond;
+ /* Scan the tests and simplify comparisons against small
+ constants. */
+ for (test = p->tests; test; test = test->next)
+ {
+ if (test->type == DT_code
+ && test->u.code == CONST_INT
+ && test->next
+ && test->next->type == DT_elt_zero_wide_safe
+ && -MAX_SAVED_CONST_INT <= test->next->u.intval
+ && test->next->u.intval <= MAX_SAVED_CONST_INT)
+ {
+ test->type = DT_const_int;
+ test->u.intval = test->next->u.intval;
+ test->next = test->next->next;
+ }
+ }
+
last_test = test = p->tests;
uncond = is_unconditional (test, subroutine_type);
if (uncond == 0)
while ((test = test->next) != NULL)
{
- int uncond2;
-
last_test = test;
- uncond2 = is_unconditional (test, subroutine_type);
- if (uncond2 != 0)
+ if (is_unconditional (test, subroutine_type))
break;
printf ("\n && ");
/* Emit code for all of the sibling nodes of HEAD. */
static void
-write_tree_1 (head, depth, subroutine_type)
- struct decision_head *head;
- int depth;
- enum routine_type subroutine_type;
+write_tree_1 (struct decision_head *head, int depth,
+ enum routine_type subroutine_type)
{
struct decision *p, *next;
int uncond = 0;
position at the node that branched to this node. */
static void
-write_tree (head, prevpos, type, initial)
- struct decision_head *head;
- const char *prevpos;
- enum routine_type type;
- int initial;
+write_tree (struct decision_head *head, const char *prevpos,
+ enum routine_type type, int initial)
{
- register struct decision *p = head->first;
+ struct decision *p = head->first;
putchar ('\n');
if (p->need_label)
node TREE. */
static void
-write_subroutine (head, type)
- struct decision_head *head;
- enum routine_type type;
+write_subroutine (struct decision_head *head, enum routine_type type)
{
int subfunction = head->first ? head->first->subroutine_number : 0;
const char *s_or_e;
switch (type)
{
case RECOG:
- printf ("%sint recog%s PARAMS ((rtx, rtx, int *));\n", s_or_e, extension);
printf ("%sint\n\
-recog%s (x0, insn, pnum_clobbers)\n\
- register rtx x0;\n\
- rtx insn ATTRIBUTE_UNUSED;\n\
- int *pnum_clobbers ATTRIBUTE_UNUSED;\n", s_or_e, extension);
+recog%s (rtx x0 ATTRIBUTE_UNUSED,\n\trtx insn ATTRIBUTE_UNUSED,\n\tint *pnum_clobbers ATTRIBUTE_UNUSED)\n", s_or_e, extension);
break;
case SPLIT:
- printf ("%srtx split%s PARAMS ((rtx, rtx));\n", s_or_e, extension);
printf ("%srtx\n\
-split%s (x0, insn)\n\
- register rtx x0;\n\
- rtx insn ATTRIBUTE_UNUSED;\n", s_or_e, extension);
+split%s (rtx x0 ATTRIBUTE_UNUSED, rtx insn ATTRIBUTE_UNUSED)\n",
+ s_or_e, extension);
break;
case PEEPHOLE2:
- printf ("%srtx peephole2%s PARAMS ((rtx, rtx, int *));\n",
- s_or_e, extension);
printf ("%srtx\n\
-peephole2%s (x0, insn, _pmatch_len)\n\
- register rtx x0;\n\
- rtx insn ATTRIBUTE_UNUSED;\n\
- int *_pmatch_len ATTRIBUTE_UNUSED;\n", s_or_e, extension);
+peephole2%s (rtx x0 ATTRIBUTE_UNUSED,\n\trtx insn ATTRIBUTE_UNUSED,\n\tint *_pmatch_len ATTRIBUTE_UNUSED)\n",
+ s_or_e, extension);
break;
}
- printf ("{\n register rtx * const operands ATTRIBUTE_UNUSED = &recog_data.operand[0];\n");
+ printf ("{\n rtx * const operands ATTRIBUTE_UNUSED = &recog_data.operand[0];\n");
for (i = 1; i <= max_depth; i++)
- printf (" register rtx x%d ATTRIBUTE_UNUSED;\n", i);
+ printf (" rtx x%d ATTRIBUTE_UNUSED;\n", i);
printf (" %s tem ATTRIBUTE_UNUSED;\n", IS_SPLIT (type) ? "rtx" : "int");
subroutines, but did not write them out. Do so now. */
static void
-write_subroutines (head, type)
- struct decision_head *head;
- enum routine_type type;
+write_subroutines (struct decision_head *head, enum routine_type type)
{
struct decision *p;
/* Begin the output file. */
static void
-write_header ()
+write_header (void)
{
puts ("\
/* Generated automatically by the program `genrecog' from the target\n\
\n\
#include \"config.h\"\n\
#include \"system.h\"\n\
+#include \"coretypes.h\"\n\
+#include \"tm.h\"\n\
#include \"rtl.h\"\n\
#include \"tm_p.h\"\n\
#include \"function.h\"\n\
puts ("\n\
The function split_insns returns 0 if the rtl could not\n\
- be split or the split rtl in a SEQUENCE if it can be.\n\
+ be split or the split rtl as an INSN list if it can be.\n\
\n\
The function peephole2_insns returns 0 if the rtl could not\n\
- be matched. If there was a match, the new rtl is returned in a SEQUENCE,\n\
+ be matched. If there was a match, the new rtl is returned in an INSN list,\n\
and LAST_INSN will point to the last recognized insn in the old sequence.\n\
*/\n\n");
}
TYPE says what type of routine we are recognizing (RECOG or SPLIT). */
static struct decision_head
-make_insn_sequence (insn, type)
- rtx insn;
- enum routine_type type;
+make_insn_sequence (rtx insn, enum routine_type type)
{
rtx x;
const char *c_test = XSTR (insn, type == RECOG ? 2 : 1);
+ int truth = maybe_eval_c_test (c_test);
struct decision *last;
struct decision_test *test, **place;
struct decision_head head;
char c_test_pos[2];
+ /* We should never see an insn whose C test is false at compile time. */
+ if (truth == 0)
+ abort ();
+
record_insn_name (next_insn_code, (type == RECOG ? XSTR (insn, 0) : NULL));
c_test_pos[0] = '\0';
continue;
place = &test->next;
- if (c_test[0])
+ /* Skip the C test if it's known to be true at compile time. */
+ if (truth == -1)
{
/* Need a new node if we have another test to add. */
if (test->type == DT_accept_op)
switch (type)
{
case RECOG:
- /* If this is an DEFINE_INSN and X is a PARALLEL, see if it ends
+ /* If this is a DEFINE_INSN and X is a PARALLEL, see if it ends
with a group of CLOBBERs of (hard) registers or MATCH_SCRATCHes.
If so, set up to recognize the pattern without these CLOBBERs. */
place = &last->tests;
}
- if (c_test[0])
+ /* Skip the C test if it's known to be true at compile
+ time. */
+ if (truth == -1)
{
test = new_decision_test (DT_c_test, &place);
test->u.c_test = c_test;
case SPLIT:
/* Define the subroutine we will call below and emit in genemit. */
- printf ("extern rtx gen_split_%d PARAMS ((rtx *));\n", next_insn_code);
+ printf ("extern rtx gen_split_%d (rtx *);\n", next_insn_code);
break;
case PEEPHOLE2:
/* Define the subroutine we will call below and emit in genemit. */
- printf ("extern rtx gen_peephole2_%d PARAMS ((rtx, rtx *));\n",
+ printf ("extern rtx gen_peephole2_%d (rtx, rtx *);\n",
next_insn_code);
break;
}
}
static void
-process_tree (head, subroutine_type)
- struct decision_head *head;
- enum routine_type subroutine_type;
+process_tree (struct decision_head *head, enum routine_type subroutine_type)
{
if (head->first == NULL)
{
write_subroutine (head, subroutine_type);
}
\f
-extern int main PARAMS ((int, char **));
+extern int main (int, char **);
int
-main (argc, argv)
- int argc;
- char **argv;
+main (int argc, char **argv)
{
rtx desc;
struct decision_head recog_tree, split_tree, peephole2_tree, h;
memset (&peephole2_tree, 0, sizeof peephole2_tree);
if (argc <= 1)
- fatal ("No input file name.");
+ fatal ("no input file name");
- if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
+ if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
return (FATAL_EXIT_CODE);
next_insn_code = 0;
\f
/* Define this so we can link with print-rtl.o to get debug_rtx function. */
const char *
-get_insn_name (code)
- int code;
+get_insn_name (int code)
{
if (code < insn_name_ptr_size)
return insn_name_ptr[code];
}
static void
-record_insn_name (code, name)
- int code;
- const char *name;
+record_insn_name (int code, const char *name)
{
static const char *last_real_name = "insn";
static int last_real_code = 0;
{
int new_size;
new_size = (insn_name_ptr_size ? insn_name_ptr_size * 2 : 512);
- insn_name_ptr =
- (char **) xrealloc (insn_name_ptr, sizeof(char *) * new_size);
+ insn_name_ptr = xrealloc (insn_name_ptr, sizeof(char *) * new_size);
memset (insn_name_ptr + insn_name_ptr_size, 0,
sizeof(char *) * (new_size - insn_name_ptr_size));
insn_name_ptr_size = new_size;
}
\f
static void
-debug_decision_2 (test)
- struct decision_test *test;
+debug_decision_2 (struct decision_test *test)
{
switch (test->type)
{
fprintf (stderr, "elt1_i=%d", (int) test->u.intval);
break;
case DT_elt_zero_wide:
- fprintf (stderr, "elt0_w=");
- fprintf (stderr, HOST_WIDE_INT_PRINT_DEC, test->u.intval);
+ fprintf (stderr, "elt0_w=" HOST_WIDE_INT_PRINT_DEC, test->u.intval);
break;
case DT_elt_zero_wide_safe:
- fprintf (stderr, "elt0_ws=");
- fprintf (stderr, HOST_WIDE_INT_PRINT_DEC, test->u.intval);
+ fprintf (stderr, "elt0_ws=" HOST_WIDE_INT_PRINT_DEC, test->u.intval);
break;
case DT_veclen_ge:
fprintf (stderr, "veclen>=%d", test->u.veclen);
}
static void
-debug_decision_1 (d, indent)
- struct decision *d;
- int indent;
+debug_decision_1 (struct decision *d, int indent)
{
int i;
struct decision_test *test;
}
static void
-debug_decision_0 (d, indent, maxdepth)
- struct decision *d;
- int indent, maxdepth;
+debug_decision_0 (struct decision *d, int indent, int maxdepth)
{
struct decision *n;
int i;
}
void
-debug_decision (d)
- struct decision *d;
+debug_decision (struct decision *d)
{
debug_decision_0 (d, 0, 1000000);
}
void
-debug_decision_list (d)
- struct decision *d;
+debug_decision_list (struct decision *d)
{
while (d)
{