/* Generate the machine mode enumeration and associated tables.
- Copyright (C) 2003
+ Copyright (C) 2003, 2004
Free Software Foundation, Inc.
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#include "bconfig.h"
#include "system.h"
#include "errors.h"
+#include "hashtab.h"
/* enum mode_class is normally defined by machmode.h but we can't
include that header here. */
struct mode_data *next; /* next this class - arbitrary order */
const char *name; /* printable mode name -- SI, not SImode */
- enum mode_class class; /* this mode class */
- unsigned int bitsize; /* size in bits, equiv to TYPE_PRECISION */
+ enum mode_class cl; /* this mode class */
+ unsigned int precision; /* size in bits, equiv to TYPE_PRECISION */
unsigned int bytesize; /* storage size in addressable units */
unsigned int ncomponents; /* number of subunits */
unsigned int alignment; /* mode alignment */
- const char *format; /* floating point format - MODE_FLOAT only */
+ const char *format; /* floating point format - float modes only */
struct mode_data *component; /* mode of components */
struct mode_data *wider; /* next wider mode */
+ struct mode_data *wider_2x; /* 2x wider mode */
+
+ struct mode_data *contained; /* Pointer to list of modes that have
+ this mode as a component. */
+ struct mode_data *next_cont; /* Next mode in that list. */
const char *file; /* file and line of definition, */
unsigned int line; /* for error reporting */
+ unsigned int counter; /* Rank ordering of modes */
};
-static struct mode_data *known_modes[MAX_MODE_CLASS];
+static struct mode_data *modes[MAX_MODE_CLASS];
static unsigned int n_modes[MAX_MODE_CLASS];
static struct mode_data *void_mode;
static const struct mode_data blank_mode = {
0, "<unknown>", MAX_MODE_CLASS,
- -1, -1, -1, -1,
- 0, 0, 0,
- "<unknown>", 0
+ -1U, -1U, -1U, -1U,
+ 0, 0, 0, 0, 0, 0,
+ "<unknown>", 0, 0
};
+static htab_t modes_by_name;
+
+/* Data structure for recording target-specified runtime adjustments
+ to a particular mode. We support varying the byte size, the
+ alignment, and the floating point format. */
+struct mode_adjust
+{
+ struct mode_adjust *next;
+ struct mode_data *mode;
+ const char *adjustment;
+
+ const char *file;
+ unsigned int line;
+};
+
+static struct mode_adjust *adj_bytesize;
+static struct mode_adjust *adj_alignment;
+static struct mode_adjust *adj_format;
+
/* Mode class operations. */
static enum mode_class
-complex_class (enum mode_class class)
+complex_class (enum mode_class c)
{
- switch (class)
+ switch (c)
{
case MODE_INT: return MODE_COMPLEX_INT;
case MODE_FLOAT: return MODE_COMPLEX_FLOAT;
default:
- error ("no complex class for class %s", mode_class_names[class]);
+ error ("no complex class for class %s", mode_class_names[c]);
return MODE_RANDOM;
}
}
static enum mode_class
-vector_class (enum mode_class class)
+vector_class (enum mode_class cl)
{
- switch (class)
+ switch (cl)
{
case MODE_INT: return MODE_VECTOR_INT;
case MODE_FLOAT: return MODE_VECTOR_FLOAT;
default:
- error ("no vector class for class %s", mode_class_names[class]);
+ error ("no vector class for class %s", mode_class_names[cl]);
return MODE_RANDOM;
}
}
-static struct mode_data *
-find_mode (enum mode_class class, const char *name)
+/* Utility routines. */
+static inline struct mode_data *
+find_mode (const char *name)
{
- struct mode_data *m;
+ struct mode_data key;
- for (m = known_modes[class]; m; m = m->next)
- if (!strcmp (name, m->name))
- return m;
-
- return 0;
+ key.name = name;
+ return (struct mode_data *) htab_find (modes_by_name, &key);
}
static struct mode_data *
-new_mode (enum mode_class class, const char *name,
+new_mode (enum mode_class cl, const char *name,
const char *file, unsigned int line)
{
struct mode_data *m;
+ static unsigned int count = 0;
- m = find_mode (class, name);
+ m = find_mode (name);
if (m)
{
error ("%s:%d: duplicate definition of mode \"%s\"",
return m;
}
- m = xmalloc (sizeof (struct mode_data));
+ m = XNEW (struct mode_data);
memcpy (m, &blank_mode, sizeof (struct mode_data));
- m->class = class;
+ m->cl = cl;
m->name = name;
if (file)
m->file = trim_filename (file);
m->line = line;
+ m->counter = count++;
- m->next = known_modes[class];
- known_modes[class] = m;
- n_modes[class]++;
+ m->next = modes[cl];
+ modes[cl] = m;
+ n_modes[cl]++;
+
+ *htab_find_slot (modes_by_name, m, INSERT) = m;
+
return m;
}
+static hashval_t
+hash_mode (const void *p)
+{
+ const struct mode_data *m = (const struct mode_data *)p;
+ return htab_hash_string (m->name);
+}
+
+static int
+eq_mode (const void *p, const void *q)
+{
+ const struct mode_data *a = (const struct mode_data *)p;
+ const struct mode_data *b = (const struct mode_data *)q;
+
+ return !strcmp (a->name, b->name);
+}
+
#define for_all_modes(C, M) \
for (C = 0; C < MAX_MODE_CLASS; C++) \
- for (M = known_modes[C]; M; M = M->next)
+ for (M = modes[C]; M; M = M->next)
+
+static void ATTRIBUTE_UNUSED
+new_adjust (const char *name,
+ struct mode_adjust **category, const char *catname,
+ const char *adjustment,
+ enum mode_class required_class,
+ const char *file, unsigned int line)
+{
+ struct mode_data *mode = find_mode (name);
+ struct mode_adjust *a;
+
+ file = trim_filename (file);
+ if (!mode)
+ {
+ error ("%s:%d: no mode \"%s\"", file, line, name);
+ return;
+ }
+
+ if (required_class != MODE_RANDOM && mode->cl != required_class)
+ {
+ error ("%s:%d: mode \"%s\" is not class %s",
+ file, line, name, mode_class_names[required_class] + 5);
+ return;
+ }
+
+ for (a = *category; a; a = a->next)
+ if (a->mode == mode)
+ {
+ error ("%s:%d: mode \"%s\" already has a %s adjustment",
+ file, line, name, catname);
+ error ("%s:%d: previous adjustment here", a->file, a->line);
+ return;
+ }
+
+ a = XNEW (struct mode_adjust);
+ a->mode = mode;
+ a->adjustment = adjustment;
+ a->file = file;
+ a->line = line;
+
+ a->next = *category;
+ *category = a;
+}
/* Diagnose failure to meet expectations in a partially filled out
mode structure. */
static void
validate_mode (struct mode_data *m,
- enum requirement r_bitsize,
+ enum requirement r_precision,
enum requirement r_bytesize,
enum requirement r_component,
enum requirement r_ncomponents,
enum requirement r_format)
{
- validate_field (m, bitsize);
+ validate_field (m, precision);
validate_field (m, bytesize);
validate_field (m, component);
validate_field (m, ncomponents);
error ("%s:%d: mode with no name", m->file, m->line);
return;
}
- if (m->class == MAX_MODE_CLASS)
+ if (m->cl == MAX_MODE_CLASS)
{
error ("%s:%d: %smode has no mode class", m->file, m->line, m->name);
return;
}
- switch (m->class)
+ switch (m->cl)
{
case MODE_RANDOM:
/* Nothing more need be said. */
validate_mode (m, UNSET, UNSET, UNSET, UNSET, UNSET);
- m->bitsize = 0;
+ m->precision = 0;
m->bytesize = 0;
m->ncomponents = 0;
m->component = 0;
validate_mode (m, UNSET, UNSET, UNSET, UNSET, UNSET);
m->bytesize = 4;
- m->ncomponents = 0;
+ m->ncomponents = 1;
m->component = 0;
break;
case MODE_INT:
case MODE_FLOAT:
+ case MODE_DECIMAL_FLOAT:
/* A scalar mode must have a byte size, may have a bit size,
and must not have components. A float mode must have a
format. */
validate_mode (m, OPTIONAL, SET, UNSET, UNSET,
- m->class == MODE_FLOAT ? SET : UNSET);
+ m->cl != MODE_INT ? SET : UNSET);
- m->ncomponents = 0;
+ m->ncomponents = 1;
m->component = 0;
break;
m->bytesize = m->component->bytesize;
- m->ncomponents = 0;
+ m->ncomponents = 1;
m->component = 0; /* ??? preserve this */
break;
/* Complex modes should have a component indicated, but no more. */
validate_mode (m, UNSET, UNSET, SET, UNSET, UNSET);
m->ncomponents = 2;
- if (m->component->bitsize != (unsigned int)-1)
- m->bitsize = 2 * m->component->bitsize;
+ if (m->component->precision != (unsigned int)-1)
+ m->precision = 2 * m->component->precision;
m->bytesize = 2 * m->component->bytesize;
break;
case MODE_VECTOR_FLOAT:
/* Vector modes should have a component and a number of components. */
validate_mode (m, UNSET, UNSET, SET, SET, UNSET);
- if (m->component->bitsize != (unsigned int)-1)
- m->bitsize = m->ncomponents * m->component->bitsize;
+ if (m->component->precision != (unsigned int)-1)
+ m->precision = m->ncomponents * m->component->precision;
m->bytesize = m->ncomponents * m->component->bytesize;
break;
default:
- abort ();
+ gcc_unreachable ();
}
/* If not already specified, the mode alignment defaults to the largest
power of two that divides the size of the object. Complex types are
not more aligned than their contents. */
- if (m->class == MODE_COMPLEX_INT || m->class == MODE_COMPLEX_FLOAT)
+ if (m->cl == MODE_COMPLEX_INT || m->cl == MODE_COMPLEX_FLOAT)
alignment = m->component->bytesize;
else
alignment = m->bytesize;
m->alignment = alignment & (~alignment + 1);
+
+ /* If this mode has components, make the component mode point back
+ to this mode, for the sake of adjustments. */
+ if (m->component)
+ {
+ m->next_cont = m->component->contained;
+ m->component->contained = m;
+ }
}
static void
complete_all_modes (void)
{
struct mode_data *m;
- enum mode_class c;
-
- for_all_modes (c, m)
+ int cl;
+
+ for_all_modes (cl, m)
complete_mode (m);
}
/* For each mode in class CLASS, construct a corresponding complex mode. */
#define COMPLEX_MODES(C) make_complex_modes(MODE_##C, __FILE__, __LINE__)
static void
-make_complex_modes (enum mode_class class,
+make_complex_modes (enum mode_class cl,
const char *file, unsigned int line)
{
struct mode_data *m;
struct mode_data *c;
char buf[8];
- enum mode_class cclass = complex_class (class);
+ enum mode_class cclass = complex_class (cl);
if (cclass == MODE_RANDOM)
return;
-
- for (m = known_modes[class]; m; m = m->next)
+
+ for (m = modes[cl]; m; m = m->next)
{
/* Skip BImode. FIXME: BImode probably shouldn't be MODE_INT. */
- if (m->bitsize == 1)
+ if (m->precision == 1)
continue;
if (strlen (m->name) >= sizeof buf)
/* Float complex modes are named SCmode, etc.
Int complex modes are named CSImode, etc.
This inconsistency should be eliminated. */
- if (class == MODE_FLOAT)
+ if (cl == MODE_FLOAT)
{
- char *p;
+ char *p, *q = 0;
strncpy (buf, m->name, sizeof buf);
p = strchr (buf, 'F');
if (p == 0)
+ q = strchr (buf, 'D');
+ if (p == 0 && q == 0)
{
- error ("%s:%d: float mode \"%s\" has no 'F'",
+ error ("%s:%d: float mode \"%s\" has no 'F' or 'D'",
m->file, m->line, m->name);
continue;
}
- *p = 'C';
+ if (p != 0)
+ *p = 'C';
+ else
+ snprintf (buf, sizeof buf, "C%s", m->name);
}
else
snprintf (buf, sizeof buf, "C%s", m->name);
}
}
-/* For all modes in class CLASS, construct vector modes of width
+/* For all modes in class CL, construct vector modes of width
WIDTH, having as many components as necessary. */
#define VECTOR_MODES(C, W) make_vector_modes(MODE_##C, W, __FILE__, __LINE__)
-static void
-make_vector_modes (enum mode_class class, unsigned int width,
+static void ATTRIBUTE_UNUSED
+make_vector_modes (enum mode_class cl, unsigned int width,
const char *file, unsigned int line)
{
struct mode_data *m;
struct mode_data *v;
char buf[8];
unsigned int ncomponents;
- enum mode_class vclass = vector_class (class);
+ enum mode_class vclass = vector_class (cl);
if (vclass == MODE_RANDOM)
return;
- for (m = known_modes[class]; m; m = m->next)
+ for (m = modes[cl]; m; m = m->next)
{
/* Do not construct vector modes with only one element, or
vector modes where the element size doesn't divide the full
/* Skip QFmode and BImode. FIXME: this special case should
not be necessary. */
- if (class == MODE_FLOAT && m->bytesize == 1)
+ if (cl == MODE_FLOAT && m->bytesize == 1)
continue;
- if (class == MODE_INT && m->bitsize == 1)
+ if (cl == MODE_INT && m->precision == 1)
continue;
if ((size_t)snprintf (buf, sizeof buf, "V%u%s", ncomponents, m->name)
#define CC_MODE(N) _SPECIAL_MODE (CC, N)
static void
-make_special_mode (enum mode_class class, const char *name,
+make_special_mode (enum mode_class cl, const char *name,
const char *file, unsigned int line)
{
- new_mode (class, name, file, line);
+ new_mode (cl, name, file, line);
}
-#define INT_MODE(N, Y) FRACTIONAL_INT_MODE (N, -1, Y)
+#define INT_MODE(N, Y) FRACTIONAL_INT_MODE (N, -1U, Y)
#define FRACTIONAL_INT_MODE(N, B, Y) \
make_int_mode (#N, B, Y, __FILE__, __LINE__)
static void
make_int_mode (const char *name,
- unsigned int bitsize, unsigned int bytesize,
+ unsigned int precision, unsigned int bytesize,
const char *file, unsigned int line)
{
struct mode_data *m = new_mode (MODE_INT, name, file, line);
m->bytesize = bytesize;
- m->bitsize = bitsize;
+ m->precision = precision;
}
-#define FLOAT_MODE(N, Y, F) FRACTIONAL_FLOAT_MODE (N, -1, Y, F)
+#define FLOAT_MODE(N, Y, F) FRACTIONAL_FLOAT_MODE (N, -1U, Y, F)
#define FRACTIONAL_FLOAT_MODE(N, B, Y, F) \
make_float_mode (#N, B, Y, #F, __FILE__, __LINE__)
static void
make_float_mode (const char *name,
- unsigned int bitsize, unsigned int bytesize,
+ unsigned int precision, unsigned int bytesize,
const char *format,
const char *file, unsigned int line)
{
struct mode_data *m = new_mode (MODE_FLOAT, name, file, line);
m->bytesize = bytesize;
- m->bitsize = bitsize;
+ m->precision = precision;
+ m->format = format;
+}
+
+#define DECIMAL_FLOAT_MODE(N, Y, F) \
+ FRACTIONAL_DECIMAL_FLOAT_MODE (N, -1U, Y, F)
+#define FRACTIONAL_DECIMAL_FLOAT_MODE(N, B, Y, F) \
+ make_decimal_float_mode (#N, B, Y, #F, __FILE__, __LINE__)
+
+static void
+make_decimal_float_mode (const char *name,
+ unsigned int precision, unsigned int bytesize,
+ const char *format,
+ const char *file, unsigned int line)
+{
+ struct mode_data *m = new_mode (MODE_DECIMAL_FLOAT, name, file, line);
+ m->bytesize = bytesize;
+ m->precision = precision;
m->format = format;
}
reset_float_format (#N, #F, __FILE__, __LINE__)
static void ATTRIBUTE_UNUSED
reset_float_format (const char *name, const char *format,
- const char *file, const char *line)
+ const char *file, unsigned int line)
{
- struct mode_data *m = find_mode (MODE_FLOAT, name);
+ struct mode_data *m = find_mode (name);
if (!m)
{
- error ("%s:%d: no mode \"%s\" in class FLOAT", file, line, name);
+ error ("%s:%d: no mode \"%s\"", file, line, name);
+ return;
+ }
+ if (m->cl != MODE_FLOAT && m->cl != MODE_DECIMAL_FLOAT)
+ {
+ error ("%s:%d: mode \"%s\" is not a FLOAT class", file, line, name);
return;
}
m->format = format;
/* Partial integer modes are specified by relation to a full integer mode.
For now, we do not attempt to narrow down their bit sizes. */
#define PARTIAL_INT_MODE(M) \
- make_partial_integer_mode (#M, "P" #M, -1, __FILE__, __LINE__)
+ make_partial_integer_mode (#M, "P" #M, -1U, __FILE__, __LINE__)
static void ATTRIBUTE_UNUSED
make_partial_integer_mode (const char *base, const char *name,
- unsigned int bitsize,
+ unsigned int precision,
const char *file, unsigned int line)
{
struct mode_data *m;
- struct mode_data *component = find_mode (MODE_INT, base);
+ struct mode_data *component = find_mode (base);
if (!component)
{
- error ("%s:%d: no mode \"%s\" in class INT", file, line, name);
+ error ("%s:%d: no mode \"%s\"", file, line, name);
return;
}
-
+ if (component->cl != MODE_INT)
+ {
+ error ("%s:%d: mode \"%s\" is not class INT", file, line, name);
+ return;
+ }
+
m = new_mode (MODE_PARTIAL_INT, name, file, line);
- m->bitsize = bitsize;
+ m->precision = precision;
m->component = component;
}
{
struct mode_data *v;
enum mode_class vclass = vector_class (bclass);
- struct mode_data *component = find_mode (bclass, base);
+ struct mode_data *component = find_mode (base);
char namebuf[8];
if (vclass == MODE_RANDOM)
return;
if (component == 0)
{
- error ("%s:%d: no mode \"%s\" in class %s",
+ error ("%s:%d: no mode \"%s\"", file, line, base);
+ return;
+ }
+ if (component->cl != bclass)
+ {
+ error ("%s:%d: mode \"%s\" is not class %s",
file, line, base, mode_class_names[bclass] + 5);
return;
}
ncomponents, base) >= sizeof namebuf)
{
error ("%s:%d: mode name \"%s\" is too long",
- base, file, line);
+ file, line, base);
return;
}
v->ncomponents = ncomponents;
v->component = component;
}
-
+
+/* Adjustability. */
+#define _ADD_ADJUST(A, M, X, C) \
+ new_adjust (#M, &adj_##A, #A, #X, MODE_##C, __FILE__, __LINE__)
+
+#define ADJUST_BYTESIZE(M, X) _ADD_ADJUST(bytesize, M, X, RANDOM)
+#define ADJUST_ALIGNMENT(M, X) _ADD_ADJUST(alignment, M, X, RANDOM)
+#define ADJUST_FLOAT_FORMAT(M, X) _ADD_ADJUST(format, M, X, FLOAT)
static void
create_modes (void)
/* Processing. */
/* Sort a list of modes into the order needed for the WIDER field:
- major sort by bitsize, minor sort by component bitsize.
+ major sort by precision, minor sort by component precision.
For instance:
QI < HI < SI < DI < TI
V4QI < V2HI < V8QI < V4HI < V2SI.
- If the bitsize is not set, sort by the bytesize. A mode with
- bitsize set gets sorted before a mode without bitsize set, if
+ If the precision is not set, sort by the bytesize. A mode with
+ precision set gets sorted before a mode without precision set, if
they have the same bytesize; this is the right thing because
- the bitsize must always be smaller than the bytesize * BITS_PER_UNIT.
+ the precision must always be smaller than the bytesize * BITS_PER_UNIT.
We don't have to do anything special to get this done -- an unset
- bitsize shows up as (unsigned int)-1, i.e. UINT_MAX. */
+ precision shows up as (unsigned int)-1, i.e. UINT_MAX. */
static int
cmp_modes (const void *a, const void *b)
{
else if (m->bytesize < n->bytesize)
return -1;
- if (m->bitsize > n->bitsize)
+ if (m->precision > n->precision)
return 1;
- else if (m->bitsize < n->bitsize)
+ else if (m->precision < n->precision)
return -1;
if (!m->component && !n->component)
- return 0;
+ {
+ if (m->counter < n->counter)
+ return -1;
+ else
+ return 1;
+ }
if (m->component->bytesize > n->component->bytesize)
return 1;
else if (m->component->bytesize < n->component->bytesize)
return -1;
- if (m->component->bitsize > n->component->bitsize)
+ if (m->component->precision > n->component->precision)
return 1;
- else if (m->component->bitsize < n->component->bitsize)
+ else if (m->component->precision < n->component->precision)
return -1;
- return 0;
+ if (m->counter < n->counter)
+ return -1;
+ else
+ return 1;
}
static void
calc_wider_mode (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
struct mode_data **sortbuf;
unsigned int max_n_modes = 0;
for (c = 0; c < MAX_MODE_CLASS; c++)
max_n_modes = MAX (max_n_modes, n_modes[c]);
- sortbuf = alloca (max_n_modes * sizeof (struct mode_data *));
+ /* Allocate max_n_modes + 1 entries to leave room for the extra null
+ pointer assigned after the qsort call below. */
+ sortbuf = (struct mode_data **) alloca ((max_n_modes + 1) * sizeof (struct mode_data *));
for (c = 0; c < MAX_MODE_CLASS; c++)
{
{
struct mode_data *prev, *next;
- for (prev = 0, m = known_modes[c]; m; m = next)
+ for (prev = 0, m = modes[c]; m; m = next)
{
m->wider = void_mode;
+ m->wider_2x = void_mode;
/* this is nreverse */
next = m->next;
m->next = prev;
prev = m;
}
- known_modes[c] = prev;
+ modes[c] = prev;
}
else
{
- if (!known_modes[c])
+ if (!modes[c])
continue;
- for (i = 0, m = known_modes[c]; m; i++, m = m->next)
+ for (i = 0, m = modes[c]; m; i++, m = m->next)
sortbuf[i] = m;
qsort (sortbuf, i, sizeof (struct mode_data *), cmp_modes);
sortbuf[j]->next = sortbuf[j]->wider = sortbuf[j + 1];
- known_modes[c] = sortbuf[0];
+ modes[c] = sortbuf[0];
}
}
}
} while (0)
#define print_decl(TYPE, NAME, ASIZE) \
- printf ("\nconst %s %s[%s] =\n{\n", TYPE, NAME, ASIZE);
+ puts ("\nconst " TYPE " " NAME "[" ASIZE "] =\n{");
+
+#define print_maybe_const_decl(TYPE, NAME, ASIZE, CATEGORY) \
+ printf ("\n" TYPE " " NAME "[" ASIZE "] = \n{\n", \
+ adj_##CATEGORY ? "" : "const ")
#define print_closer() puts ("};")
static void
emit_insn_modes_h (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m, *first, *last;
printf ("/* Generated automatically from machmode.def%s%s\n",
enum machine_mode\n{");
for (c = 0; c < MAX_MODE_CLASS; c++)
- for (m = known_modes[c]; m; m = m->next)
+ for (m = modes[c]; m; m = m->next)
{
int count_;
printf (" %smode,%n", m->name, &count_);
for (c = 0; c < MAX_MODE_CLASS; c++)
{
- first = known_modes[c];
+ first = modes[c];
last = 0;
for (m = first; m; last = m, m = m->next)
;
end will try to use it for bitfields in structures and the
like, which we do not want. Only the target md file should
generate BImode widgets. */
- if (first && first->bitsize == 1)
+ if (first && first->precision == 1)
first = first->next;
if (first && last)
puts ("\
NUM_MACHINE_MODES = MAX_MACHINE_MODE\n\
-};\n\
+};\n");
+
+ /* I can't think of a better idea, can you? */
+ printf ("#define CONST_MODE_SIZE%s\n", adj_bytesize ? "" : " const");
+ printf ("#define CONST_MODE_BASE_ALIGN%s\n", adj_alignment ? "" : " const");
+#if 0 /* disabled for backward compatibility, temporary */
+ printf ("#define CONST_REAL_FORMAT_FOR_MODE%s\n", adj_format ? "" :" const");
+#endif
+ puts ("\
\n\
#endif /* insn-modes.h */");
}
static void
emit_mode_name (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
print_decl ("char *const", "mode_name", "NUM_MACHINE_MODES");
static void
emit_mode_class (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
print_decl ("unsigned char", "mode_class", "NUM_MACHINE_MODES");
for_all_modes (c, m)
- tagged_printf ("%s", mode_class_names[m->class], m->name);
+ tagged_printf ("%s", mode_class_names[m->cl], m->name);
print_closer ();
}
static void
-emit_mode_bitsize (void)
+emit_mode_precision (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
- print_decl ("unsigned short", "mode_bitsize", "NUM_MACHINE_MODES");
+ print_decl ("unsigned short", "mode_precision", "NUM_MACHINE_MODES");
for_all_modes (c, m)
- if (m->bitsize != (unsigned int)-1)
- tagged_printf ("%u", m->bitsize, m->name);
+ if (m->precision != (unsigned int)-1)
+ tagged_printf ("%u", m->precision, m->name);
else
tagged_printf ("%u*BITS_PER_UNIT", m->bytesize, m->name);
static void
emit_mode_size (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
- print_decl ("unsigned char", "mode_size", "NUM_MACHINE_MODES");
+ print_maybe_const_decl ("%sunsigned char", "mode_size",
+ "NUM_MACHINE_MODES", bytesize);
for_all_modes (c, m)
tagged_printf ("%u", m->bytesize, m->name);
}
static void
-emit_mode_unit_size (void)
+emit_mode_nunits (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
- print_decl ("unsigned char", "mode_unit_size", "NUM_MACHINE_MODES");
+ print_decl ("unsigned char", "mode_nunits", "NUM_MACHINE_MODES");
for_all_modes (c, m)
- tagged_printf ("%u",
- m->component
- ? m->component->bytesize : m->bytesize,
- m->name);
+ tagged_printf ("%u", m->ncomponents, m->name);
print_closer ();
}
static void
emit_mode_wider (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
print_decl ("unsigned char", "mode_wider", "NUM_MACHINE_MODES");
m->name);
print_closer ();
+ print_decl ("unsigned char", "mode_2xwider", "NUM_MACHINE_MODES");
+
+ for_all_modes (c, m)
+ {
+ struct mode_data * m2;
+
+ for (m2 = m;
+ m2 && m2 != void_mode;
+ m2 = m2->wider)
+ {
+ if (m2->bytesize < 2 * m->bytesize)
+ continue;
+ if (m->precision != (unsigned int) -1)
+ {
+ if (m2->precision != 2 * m->precision)
+ continue;
+ }
+ else
+ {
+ if (m2->precision != (unsigned int) -1)
+ continue;
+ }
+
+ break;
+ }
+ if (m2 == void_mode)
+ m2 = 0;
+ tagged_printf ("%smode",
+ m2 ? m2->name : void_mode->name,
+ m->name);
+ }
+
+ print_closer ();
}
static void
emit_mode_mask (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
print_decl ("unsigned HOST_WIDE_INT", "mode_mask_array",
: ((unsigned HOST_WIDE_INT) 1 << (m)) - 1\n");
for_all_modes (c, m)
- if (m->bitsize != (unsigned int)-1)
- tagged_printf ("MODE_MASK (%u)", m->bitsize, m->name);
+ if (m->precision != (unsigned int)-1)
+ tagged_printf ("MODE_MASK (%u)", m->precision, m->name);
else
tagged_printf ("MODE_MASK (%u*BITS_PER_UNIT)", m->bytesize, m->name);
static void
emit_mode_inner (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
print_decl ("unsigned char", "mode_inner", "NUM_MACHINE_MODES");
static void
emit_mode_base_align (void)
{
- enum mode_class c;
+ int c;
struct mode_data *m;
- print_decl ("unsigned char", "mode_base_align", "NUM_MACHINE_MODES");
+ print_maybe_const_decl ("%sunsigned char",
+ "mode_base_align", "NUM_MACHINE_MODES",
+ alignment);
for_all_modes (c, m)
tagged_printf ("%u", m->alignment, m->name);
static void
emit_class_narrowest_mode (void)
{
- enum mode_class c;
+ int c;
print_decl ("unsigned char", "class_narrowest_mode", "MAX_MODE_CLASS");
for (c = 0; c < MAX_MODE_CLASS; c++)
/* Bleah, all this to get the comment right for MIN_MODE_INT. */
tagged_printf ("MIN_%s", mode_class_names[c],
- known_modes[c]
- ? (known_modes[c]->bitsize != 1
- ? known_modes[c]->name
- : (known_modes[c]->next
- ? known_modes[c]->next->name
+ modes[c]
+ ? (modes[c]->precision != 1
+ ? modes[c]->name
+ : (modes[c]->next
+ ? modes[c]->next->name
: void_mode->name))
: void_mode->name);
{
struct mode_data *m;
- /* This will produce a table which is not constant, but points to
- entities that are constant, which is what we want. */
- print_decl ("struct real_format *\n ", "real_format_for_mode",
- "MAX_MODE_FLOAT - MIN_MODE_FLOAT + 1");
+ /* The entities pointed to by this table are constant, whether
+ or not the table itself is constant.
+
+ For backward compatibility this table is always writable
+ (several targets modify it in OVERRIDE_OPTIONS). FIXME:
+ convert all said targets to use ADJUST_FORMAT instead. */
+#if 0
+ print_maybe_const_decl ("const struct real_format *%s",
+ "real_format_for_mode",
+ "MAX_MODE_FLOAT - MIN_MODE_FLOAT + 1",
+ format);
+#else
+ print_decl ("struct real_format *\n", "real_format_for_mode",
+ "MAX_MODE_FLOAT - MIN_MODE_FLOAT + 1 "
+ "+ MAX_MODE_DECIMAL_FLOAT - MIN_MODE_DECIMAL_FLOAT + 1");
+#endif
+
+ /* The beginning of the table is entries for float modes. */
+ for (m = modes[MODE_FLOAT]; m; m = m->next)
+ if (!strcmp (m->format, "0"))
+ tagged_printf ("%s", m->format, m->name);
+ else
+ tagged_printf ("&%s", m->format, m->name);
- for (m = known_modes[MODE_FLOAT]; m; m = m->next)
+ /* The end of the table is entries for decimal float modes. */
+ for (m = modes[MODE_DECIMAL_FLOAT]; m; m = m->next)
if (!strcmp (m->format, "0"))
tagged_printf ("%s", m->format, m->name);
else
}
static void
+emit_mode_adjustments (void)
+{
+ struct mode_adjust *a;
+ struct mode_data *m;
+
+ puts ("\
+\nvoid\
+\ninit_adjust_machine_modes (void)\
+\n{\
+\n size_t s ATTRIBUTE_UNUSED;");
+
+ /* Size adjustments must be propagated to all containing modes.
+ A size adjustment forces us to recalculate the alignment too. */
+ for (a = adj_bytesize; a; a = a->next)
+ {
+ printf ("\n /* %s:%d */\n s = %s;\n",
+ a->file, a->line, a->adjustment);
+ printf (" mode_size[%smode] = s;\n", a->mode->name);
+ printf (" mode_base_align[%smode] = s & (~s + 1);\n",
+ a->mode->name);
+
+ for (m = a->mode->contained; m; m = m->next_cont)
+ {
+ switch (m->cl)
+ {
+ case MODE_COMPLEX_INT:
+ case MODE_COMPLEX_FLOAT:
+ printf (" mode_size[%smode] = 2*s;\n", m->name);
+ printf (" mode_base_align[%smode] = s & (~s + 1);\n",
+ m->name);
+ break;
+
+ case MODE_VECTOR_INT:
+ case MODE_VECTOR_FLOAT:
+ printf (" mode_size[%smode] = %d*s;\n",
+ m->name, m->ncomponents);
+ printf (" mode_base_align[%smode] = (%d*s) & (~(%d*s)+1);\n",
+ m->name, m->ncomponents, m->ncomponents);
+ break;
+
+ default:
+ internal_error (
+ "mode %s is neither vector nor complex but contains %s",
+ m->name, a->mode->name);
+ /* NOTREACHED */
+ }
+ }
+ }
+
+ /* Alignment adjustments propagate too.
+ ??? This may not be the right thing for vector modes. */
+ for (a = adj_alignment; a; a = a->next)
+ {
+ printf ("\n /* %s:%d */\n s = %s;\n",
+ a->file, a->line, a->adjustment);
+ printf (" mode_base_align[%smode] = s;\n", a->mode->name);
+
+ for (m = a->mode->contained; m; m = m->next_cont)
+ {
+ switch (m->cl)
+ {
+ case MODE_COMPLEX_INT:
+ case MODE_COMPLEX_FLOAT:
+ printf (" mode_base_align[%smode] = s;\n", m->name);
+ break;
+
+ case MODE_VECTOR_INT:
+ case MODE_VECTOR_FLOAT:
+ printf (" mode_base_align[%smode] = %d*s;\n",
+ m->name, m->ncomponents);
+ break;
+
+ default:
+ internal_error (
+ "mode %s is neither vector nor complex but contains %s",
+ m->name, a->mode->name);
+ /* NOTREACHED */
+ }
+ }
+ }
+
+ /* Real mode formats don't have to propagate anywhere. */
+ for (a = adj_format; a; a = a->next)
+ printf ("\n /* %s:%d */\n REAL_MODE_FORMAT (%smode) = %s;\n",
+ a->file, a->line, a->mode->name, a->adjustment);
+
+ puts ("}");
+}
+
+static void
emit_insn_modes_c (void)
{
emit_insn_modes_c_header ();
emit_mode_name ();
emit_mode_class ();
- emit_mode_bitsize ();
+ emit_mode_precision ();
emit_mode_size ();
- emit_mode_unit_size ();
+ emit_mode_nunits ();
emit_mode_wider ();
emit_mode_mask ();
emit_mode_inner ();
emit_mode_base_align ();
emit_class_narrowest_mode ();
emit_real_format_for_mode ();
+ emit_mode_adjustments ();
}
static void
return FATAL_EXIT_CODE;
}
+ modes_by_name = htab_create_alloc (64, hash_mode, eq_mode, 0, xcalloc, free);
+
create_modes ();
complete_all_modes ();
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