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(decimal_)float_mode_for_size in real.h

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This patch makes the binary float macros in real.h use
float_mode_for_size and adds a corresponding decimal_float_mode_for_size
for the decimal macros.

2017-09-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* machmode.h (decimal_float_mode_for_size): New function.
	* real.h (REAL_VALUE_TO_TARGET_LONG_DOUBLE): Use float_mode_for_size.
	(REAL_VALUE_TO_TARGET_DOUBLE): Likewise.
	(REAL_VALUE_TO_TARGET_SINGLE): Likewise.
	(REAL_VALUE_TO_TARGET_DECIMAL128): Use decimal_float_mode_for_size.
	(REAL_VALUE_TO_TARGET_DECIMAL64): Likewise.
	(REAL_VALUE_TO_TARGET_DECIMAL32): Likewise.

From-SVN: r251727
This commit is contained in:
Richard Sandiford 2017-09-05 19:57:09 +00:00 committed by Richard Sandiford
parent f4b316470b
commit 7773dca7d2
3 changed files with 26 additions and 6 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2017-09-05 Richard Sandiford <richard.sandiford@linaro.org>
* machmode.h (decimal_float_mode_for_size): New function.
* real.h (REAL_VALUE_TO_TARGET_LONG_DOUBLE): Use float_mode_for_size.
(REAL_VALUE_TO_TARGET_DOUBLE): Likewise.
(REAL_VALUE_TO_TARGET_SINGLE): Likewise.
(REAL_VALUE_TO_TARGET_DECIMAL128): Use decimal_float_mode_for_size.
(REAL_VALUE_TO_TARGET_DECIMAL64): Likewise.
(REAL_VALUE_TO_TARGET_DECIMAL32): Likewise.
2017-09-05 Richard Sandiford <richard.sandiford@linaro.org>
* builtins.c (expand_builtin_powi): Use int_mode_for_size.

9
gcc/machmode.h
View File

@ -652,6 +652,15 @@ float_mode_for_size (unsigned int size)
return dyn_cast <scalar_float_mode> (mode_for_size (size, MODE_FLOAT, 0));
}
/* Likewise for MODE_DECIMAL_FLOAT. */
inline opt_scalar_float_mode
decimal_float_mode_for_size (unsigned int size)
{
return dyn_cast <scalar_float_mode>
(mode_for_size (size, MODE_DECIMAL_FLOAT, 0));
}
/* Similar to mode_for_size, but find the smallest mode for a given width. */
extern machine_mode smallest_mode_for_size (unsigned int, enum mode_class);

13
gcc/real.h
View File

@ -383,27 +383,28 @@ extern const struct real_format arm_half_format;
/* IN is a REAL_VALUE_TYPE. OUT is an array of longs. */
#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) \
real_to_target (OUT, &(IN), \
mode_for_size (LONG_DOUBLE_TYPE_SIZE, MODE_FLOAT, 0))
float_mode_for_size (LONG_DOUBLE_TYPE_SIZE).require ())
#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) \
real_to_target (OUT, &(IN), mode_for_size (64, MODE_FLOAT, 0))
real_to_target (OUT, &(IN), float_mode_for_size (64).require ())
/* IN is a REAL_VALUE_TYPE. OUT is a long. */
#define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) \
((OUT) = real_to_target (NULL, &(IN), mode_for_size (32, MODE_FLOAT, 0)))
((OUT) = real_to_target (NULL, &(IN), float_mode_for_size (32).require ()))
/* Real values to IEEE 754 decimal floats. */
/* IN is a REAL_VALUE_TYPE. OUT is an array of longs. */
#define REAL_VALUE_TO_TARGET_DECIMAL128(IN, OUT) \
real_to_target (OUT, &(IN), mode_for_size (128, MODE_DECIMAL_FLOAT, 0))
real_to_target (OUT, &(IN), decimal_float_mode_for_size (128).require ())
#define REAL_VALUE_TO_TARGET_DECIMAL64(IN, OUT) \
real_to_target (OUT, &(IN), mode_for_size (64, MODE_DECIMAL_FLOAT, 0))
real_to_target (OUT, &(IN), decimal_float_mode_for_size (64).require ())
/* IN is a REAL_VALUE_TYPE. OUT is a long. */
#define REAL_VALUE_TO_TARGET_DECIMAL32(IN, OUT) \
((OUT) = real_to_target (NULL, &(IN), mode_for_size (32, MODE_DECIMAL_FLOAT, 0)))
((OUT) = real_to_target (NULL, &(IN), \
decimal_float_mode_for_size (32).require ()))
extern REAL_VALUE_TYPE real_value_truncate (format_helper, REAL_VALUE_TYPE);