+2013-12-13 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * config/arc/arc.h (BITS_PER_UNIT): Removed.
+ * config/bfin/bfin.h (BITS_PER_UNIT): Removed.
+ * config/lm32/lm32.h (BITS_PER_UNIT): Removed.
+ * config/m32c/m32c.h (BITS_PER_UNIT): Removed.
+ * config/microblaze/microblaze.h (BITS_PER_UNIT): Removed.
+ * config/picochip/picochip.h (BITS_PER_UNIT): Removed.
+ * config/spu/spu.h (BITS_PER_UNIT): Removed.
+ * defaults.h (BITS_PER_UNIT): Removed.
+ * config/i386/i386-modes.def (MAX_BITSIZE_MODE_ANY_INT): New.
+ * doc/rtl (BITS_PER_UNIT): Moved from tm.texi.
+ (MAX_BITSIZE_MODE_ANY_INT): Updated.
+ * doc/tm.texi (BITS_PER_UNIT): Removed.
+ * doc/tm.texi.in (BITS_PER_UNIT): Removed.
+ * genmodes.c (bits_per_unit, max_bitsize_mode_any_int): New.
+ (create_modes): Added code to set bits_per_unit and
+ max_bitsize_mode_any_int.
+ (emit_max_int): Changed code generation.
+ * mkconfig.sh: Added insn-modes.h.
+
2013-12-13 Jeff Law <law@redhat.com>
PR tree-optimization/45685
numbered. */
#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
-/* Number of bits in an addressable storage unit. */
-#define BITS_PER_UNIT 8
-
/* Width in bits of a "word", which is the contents of a machine register.
Note that this is not necessarily the width of data type `int';
if using 16-bit ints on a 68000, this would still be 32.
/* Define this if most significant word of a multiword number is numbered. */
#define WORDS_BIG_ENDIAN 0
-/* number of bits in an addressable storage unit */
-#define BITS_PER_UNIT 8
-
/* Width in bits of a "word", which is the contents of a machine register.
Note that this is not necessarily the width of data type `int';
if using 16-bit ints on a 68000, this would still be 32.
INT_MODE (OI, 32);
INT_MODE (XI, 64);
+/* Keep the OI and XI modes from confusing the compiler into thinking
+ that these modes could actually be used for computation. They are
+ only holders for vectors during data movement. */
+#define MAX_BITSIZE_MODE_ANY_INT (128)
+
/* The symbol Pmode stands for one of the above machine modes (usually SImode).
The tm.h file specifies which one. It is not a distinct mode. */
#define BYTES_BIG_ENDIAN 1
#define WORDS_BIG_ENDIAN 1
-#define BITS_PER_UNIT 8
#define BITS_PER_WORD 32
#define UNITS_PER_WORD 4
matches "int". Pointers are 16 bits for R8C/M16C (when TARGET_A16
is true) and 24 bits for M32CM/M32C (when TARGET_A24 is true), but
24-bit pointers are stored in 32-bit words. */
-#define BITS_PER_UNIT 8
#define UNITS_PER_WORD 2
#define POINTER_SIZE (TARGET_A16 ? 16 : 32)
#define POINTERS_EXTEND_UNSIGNED 1
#define BITS_BIG_ENDIAN 0
#define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
#define WORDS_BIG_ENDIAN (BYTES_BIG_ENDIAN)
-#define BITS_PER_UNIT 8
#define BITS_PER_WORD 32
#define UNITS_PER_WORD 4
#define MIN_UNITS_PER_WORD 4
#define BYTES_BIG_ENDIAN 0
#define WORDS_BIG_ENDIAN 0
-#define BITS_PER_UNIT 8
-
#define BITS_PER_WORD 16
#define UNITS_PER_WORD (BITS_PER_WORD / BITS_PER_UNIT)
#define WORDS_BIG_ENDIAN 1
-#define BITS_PER_UNIT 8
-
/* GCC uses word_mode in many places, assuming that it is the fastest
integer mode. That is not the case for SPU though. We can't use
32 here because (of some reason I can't remember.) */
your target, you should override these values by defining the
appropriate symbols in your tm.h file. */
-#ifndef BITS_PER_UNIT
-#define BITS_PER_UNIT 8
-#endif
-
#ifndef BITS_PER_WORD
#define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
#endif
Returns the narrowest mode in mode class @var{c}.
@end table
-The following 4 variables are defined on every target. They can be
+The following 3 variables are defined on every target. They can be
used to allocate buffers that are guaranteed to be large enough to
-hold any value that can be represented on the target.
+hold any value that can be represented on the target. The first two
+can be overridden by defining them in the target's mode.def file,
+however, the value must be a constant that can determined very early
+in the compilation process. The third symbol cannot be overridden.
@table @code
+@findex BITS_PER_UNIT
+@item BITS_PER_UNIT
+The number of bits in an addressable storage unit (byte). If you do
+not define this, the default is 8.
+
@findex MAX_BITSIZE_MODE_ANY_INT
@item MAX_BITSIZE_MODE_ANY_INT
-The maximum of MAX_BITSIZE_MODE_INT and MAX_BITSIZE_MODE_PARTIAL_INT.
+The maximum bitsize of any mode that is used in integer math. This
+should be overridden by the target if it uses large integers as
+containers for larger vectors but otherwise never uses the contents to
+compute integer values.
@findex MAX_BITSIZE_MODE_ANY_MODE
@item MAX_BITSIZE_MODE_ANY_MODE
multi-word integers.
@end defmac
-@defmac BITS_PER_UNIT
-Define this macro to be the number of bits in an addressable storage
-unit (byte). If you do not define this macro the default is 8.
-@end defmac
-
@defmac BITS_PER_WORD
Number of bits in a word. If you do not define this macro, the default
is @code{BITS_PER_UNIT * UNITS_PER_WORD}.
multi-word integers.
@end defmac
-@defmac BITS_PER_UNIT
-Define this macro to be the number of bits in an addressable storage
-unit (byte). If you do not define this macro the default is 8.
-@end defmac
-
@defmac BITS_PER_WORD
Number of bits in a word. If you do not define this macro, the default
is @code{BITS_PER_UNIT * UNITS_PER_WORD}.
#define ADJUST_IBIT(M, X) _ADD_ADJUST (ibit, M, X, ACCUM, UACCUM)
#define ADJUST_FBIT(M, X) _ADD_ADJUST (fbit, M, X, FRACT, UACCUM)
+static int bits_per_unit;
+static int max_bitsize_mode_any_int;
+
static void
create_modes (void)
{
#include "machmode.def"
+
+ /* So put the default value unless the target needs a non standard
+ value. */
+#ifdef BITS_PER_UNIT
+ bits_per_unit = BITS_PER_UNIT;
+#else
+ bits_per_unit = 8;
+#endif
+
+#ifdef MAX_BITSIZE_MODE_ANY_INT
+ max_bitsize_mode_any_int = MAX_BITSIZE_MODE_ANY_INT;
+#else
+ max_bitsize_mode_any_int = 0;
+#endif
}
/* Processing. */
int j;
puts ("");
- for (max = 1, i = modes[MODE_INT]; i; i = i->next)
- if (max < i->bytesize)
- max = i->bytesize;
- mmax = max;
- for (max = 1, i = modes[MODE_PARTIAL_INT]; i; i = i->next)
- if (max < i->bytesize)
- max = i->bytesize;
- if (max > mmax)
- mmax = max;
- printf ("#define MAX_BITSIZE_MODE_ANY_INT %d*BITS_PER_UNIT\n", mmax);
+
+ printf ("#define BITS_PER_UNIT (%d)\n", bits_per_unit);
+
+ if (max_bitsize_mode_any_int == 0)
+ {
+ for (max = 1, i = modes[MODE_INT]; i; i = i->next)
+ if (max < i->bytesize)
+ max = i->bytesize;
+ mmax = max;
+ for (max = 1, i = modes[MODE_PARTIAL_INT]; i; i = i->next)
+ if (max < i->bytesize)
+ max = i->bytesize;
+ if (max > mmax)
+ mmax = max;
+ printf ("#define MAX_BITSIZE_MODE_ANY_INT %d*BITS_PER_UNIT\n", mmax);
+ }
+ else
+ printf ("#define MAX_BITSIZE_MODE_ANY_INT %d\n", max_bitsize_mode_any_int);
mmax = 0;
for (j = 0; j < MAX_MODE_CLASS; j++)
#if defined IN_GCC && !defined GENERATOR_FILE && !defined USED_FOR_TARGET
# include "insn-flags.h"
#endif
+#if defined IN_GCC && !defined GENERATOR_FILE
+# include "insn-modes.h"
+#endif
EOF
;;
esac
projects / thirdparty / gcc.git / commitdiff
