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genmodes: Define NUM_MODE_* macros 

I was working on a patch that needed to calculate the number of
modes in a particular class.  It seemed better to have genmodes
generate this directly rather than do the kind of dance that
expmed.h had.

gcc/
	* genmodes.c (emit_insn_modes_h): Define NUM_MODE_* macros.
	* expmed.h (NUM_MODE_INT): Delete in favor of genmodes definitions.
	(NUM_MODE_PARTIAL_INT, NUM_MODE_VECTOR_INT): Likewise.
	* real.h (real_format_for_mode): Use NUM_MODE_FLOAT and
	NUM_MODE_DECIMAL_FLOAT.
	(REAL_MODE_FORMAT): Likewise.
This commit is contained in:
Richard Sandiford 2021-11-08 10:36:25 +00:00
parent 61a7f947cc
commit 8fd2477ddc
3 changed files with 15 additions and 12 deletions
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9
gcc/expmed.h
View File

@ -133,15 +133,6 @@ struct alg_hash_entry {
#define NUM_ALG_HASH_ENTRIES 307
#endif
#define NUM_MODE_INT \
(MAX_MODE_INT - MIN_MODE_INT + 1)
#define NUM_MODE_PARTIAL_INT \
(MIN_MODE_PARTIAL_INT == E_VOIDmode ? 0 \
: MAX_MODE_PARTIAL_INT - MIN_MODE_PARTIAL_INT + 1)
#define NUM_MODE_VECTOR_INT \
(MIN_MODE_VECTOR_INT == E_VOIDmode ? 0 \
: MAX_MODE_VECTOR_INT - MIN_MODE_VECTOR_INT + 1)
#define NUM_MODE_IP_INT (NUM_MODE_INT + NUM_MODE_PARTIAL_INT)
#define NUM_MODE_IPV_INT (NUM_MODE_IP_INT + NUM_MODE_VECTOR_INT)

13
gcc/genmodes.c
View File

@ -1316,6 +1316,19 @@ enum machine_mode\n{");
NUM_MACHINE_MODES = MAX_MACHINE_MODE\n\
};\n");
/* Define a NUM_* macro for each mode class, giving the number of modes
in the class. */
for (c = 0; c < MAX_MODE_CLASS; c++)
{
printf ("#define NUM_%s ", mode_class_names[c]);
if (modes[c])
printf ("(MAX_%s - MIN_%s + 1)\n", mode_class_names[c],
mode_class_names[c]);
else
printf ("0\n");
}
printf ("\n");
/* I can't think of a better idea, can you? */
printf ("#define CONST_MODE_NUNITS%s\n", adj_nunits ? "" : " const");
printf ("#define CONST_MODE_PRECISION%s\n", adj_nunits ? "" : " const");

5
gcc/real.h
View File

@ -178,13 +178,12 @@ struct real_format
decimal float modes indexed by (MODE - first decimal float mode) +
the number of float modes. */
extern const struct real_format *
real_format_for_mode[MAX_MODE_FLOAT - MIN_MODE_FLOAT + 1
+ MAX_MODE_DECIMAL_FLOAT - MIN_MODE_DECIMAL_FLOAT + 1];
real_format_for_mode[NUM_MODE_FLOAT + NUM_MODE_DECIMAL_FLOAT];
#define REAL_MODE_FORMAT(MODE) \
(real_format_for_mode[DECIMAL_FLOAT_MODE_P (MODE) \
? (((MODE) - MIN_MODE_DECIMAL_FLOAT) \
+ (MAX_MODE_FLOAT - MIN_MODE_FLOAT + 1)) \
+ NUM_MODE_FLOAT) \
: GET_MODE_CLASS (MODE) == MODE_FLOAT \
? ((MODE) - MIN_MODE_FLOAT) \
: (gcc_unreachable (), 0)])