/* 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.
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 */
struct mode_data *component; /* mode of components */
struct mode_data *wider; /* next 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 */
};
static const struct mode_data blank_mode = {
0, "<unknown>", MAX_MODE_CLASS,
- -1, -1, -1, -1,
- 0, 0, 0,
+ -1U, -1U, -1U, -1U,
+ 0, 0, 0, 0, 0,
"<unknown>", 0
};
/* 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;
}
}
struct mode_data key;
key.name = name;
- return htab_find (modes_by_name, &key);
+ 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;
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->next = modes[class];
- 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;
}
- if (required_class != MODE_RANDOM && mode->class != required_class)
+ 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)
{
return;
}
- a = xmalloc (sizeof (struct mode_adjust));
+ a = XNEW (struct mode_adjust);
a->mode = mode;
a->adjustment = adjustment;
a->file = file;
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;
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_FLOAT ? 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 = 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;
strncpy (buf, m->name, sizeof buf);
}
}
-/* 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 = 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;
}
error ("%s:%d: no mode \"%s\"", file, line, name);
return;
}
- if (m->class != MODE_FLOAT)
+ if (m->cl != MODE_FLOAT)
{
error ("%s:%d: mode \"%s\" is not class FLOAT", file, line, name);
return;
/* 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;
error ("%s:%d: no mode \"%s\"", file, line, name);
return;
}
- if (component->class != MODE_INT)
+ 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;
}
error ("%s:%d: no mode \"%s\"", file, line, base);
return;
}
- if (component->class != bclass)
+ if (component->cl != bclass)
{
error ("%s:%d: mode \"%s\" is not class %s",
file, line, base, mode_class_names[bclass] + 5);
/* 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)
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;
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;
/* Allocate max_n_modes + 1 entries to leave room for the extra null
pointer assigned after the qsort call below. */
- sortbuf = alloca ((max_n_modes + 1) * sizeof (struct mode_data *));
+ sortbuf = (struct mode_data **) alloca ((max_n_modes + 1) * sizeof (struct mode_data *));
for (c = 0; c < MAX_MODE_CLASS; c++)
{
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",
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)
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_maybe_const_decl ("%sunsigned char", "mode_size",
}
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");
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_maybe_const_decl ("%sunsigned char",
static void
emit_class_narrowest_mode (void)
{
- enum mode_class c;
+ int c;
print_decl ("unsigned char", "class_narrowest_mode", "MAX_MODE_CLASS");
/* Bleah, all this to get the comment right for MIN_MODE_INT. */
tagged_printf ("MIN_%s", mode_class_names[c],
modes[c]
- ? (modes[c]->bitsize != 1
+ ? (modes[c]->precision != 1
? modes[c]->name
: (modes[c]->next
? modes[c]->next->name
emit_mode_adjustments (void)
{
struct mode_adjust *a;
+ struct mode_data *m;
- puts ("\nvoid\ninit_adjust_machine_modes (void)\n{");
+ 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 (" /* %s:%d */\n mode_size[%smode] = %s;\n",
- a->file, a->line, a->mode->name, a->adjustment);
- if (adj_bytesize && (adj_alignment || adj_format))
- putchar ('\n');
+ {
+ 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 (" /* %s:%d */\n mode_base_align[%smode] = %s;\n",
- a->file, a->line, a->mode->name, a->adjustment);
- if (adj_alignment && adj_format)
- putchar ('\n');
+ {
+ 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 (" /* %s:%d */\n REAL_MODE_FORMAT (%smode) = %s;\n",
+ printf ("\n /* %s:%d */\n REAL_MODE_FORMAT (%smode) = %s;\n",
a->file, a->line, a->mode->name, a->adjustment);
puts ("}");
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 ();
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