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[67/77] Use scalar_mode in fixed-value.*

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This patch makes the fixed-value.* routines use scalar_mode.
It would be possible to define special classes for these modes, as for
scalar_int_mode and scalar_float_mode, but at the moment nothing would
benefit from them.  In particular, there's no use case that would help
select between one class for all fixed-point modes versus one class for
fractional modes and one class for accumulator modes.

2017-08-30  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* fixed-value.h (fixed_from_double_int): Take a scalar_mode
	rather than a machine_mode.
	(fixed_from_string): Likewise.
	(fixed_convert): Likewise.
	(fixed_convert_from_int): Likewise.
	(fixed_convert_from_real): Likewise.
	(real_convert_from_fixed): Likewise.
	* fixed-value.c (fixed_from_double_int): Likewise.
	(fixed_from_string): Likewise.
	(fixed_convert): Likewise.
	(fixed_convert_from_int): Likewise.
	(fixed_convert_from_real): Likewise.
	(real_convert_from_fixed): Likewise.
	* config/avr/avr.c (avr_out_round): Use as_a <scalar_mode>.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r251518
This commit is contained in:
Richard Sandiford 2017-08-30 11:19:47 +00:00 committed by Richard Sandiford
parent db61b7f923
commit 79052416a6
4 changed files with 33 additions and 15 deletions
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19
gcc/ChangeLog
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@ -1,3 +1,22 @@
2017-08-30 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
* fixed-value.h (fixed_from_double_int): Take a scalar_mode
rather than a machine_mode.
(fixed_from_string): Likewise.
(fixed_convert): Likewise.
(fixed_convert_from_int): Likewise.
(fixed_convert_from_real): Likewise.
(real_convert_from_fixed): Likewise.
* fixed-value.c (fixed_from_double_int): Likewise.
(fixed_from_string): Likewise.
(fixed_convert): Likewise.
(fixed_convert_from_int): Likewise.
(fixed_convert_from_real): Likewise.
(real_convert_from_fixed): Likewise.
* config/avr/avr.c (avr_out_round): Use as_a <scalar_mode>.
2017-08-30 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>

2
gcc/config/avr/avr.c
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@ -9176,7 +9176,7 @@ avr_out_fract (rtx_insn *insn, rtx operands[], bool intsigned, int *plen)
const char*
avr_out_round (rtx_insn *insn ATTRIBUTE_UNUSED, rtx *xop, int *plen)
{
machine_mode mode = GET_MODE (xop[0]);
scalar_mode mode = as_a <scalar_mode> (GET_MODE (xop[0]));
scalar_int_mode imode = int_mode_for_mode (mode).require ();
// The smallest fractional bit not cleared by the rounding is 2^(-RP).
int fbit = (int) GET_MODE_FBIT (mode);

12
gcc/fixed-value.c
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@ -86,7 +86,7 @@ check_real_for_fixed_mode (REAL_VALUE_TYPE *real_value, machine_mode mode)
The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */
FIXED_VALUE_TYPE
fixed_from_double_int (double_int payload, machine_mode mode)
fixed_from_double_int (double_int payload, scalar_mode mode)
{
FIXED_VALUE_TYPE value;
@ -108,7 +108,7 @@ fixed_from_double_int (double_int payload, machine_mode mode)
/* Initialize from a decimal or hexadecimal string. */
void
fixed_from_string (FIXED_VALUE_TYPE *f, const char *str, machine_mode mode)
fixed_from_string (FIXED_VALUE_TYPE *f, const char *str, scalar_mode mode)
{
REAL_VALUE_TYPE real_value, fixed_value, base_value;
unsigned int fbit;
@ -803,7 +803,7 @@ fixed_compare (int icode, const FIXED_VALUE_TYPE *op0,
Return true, if !SAT_P and overflow. */
bool
fixed_convert (FIXED_VALUE_TYPE *f, machine_mode mode,
fixed_convert (FIXED_VALUE_TYPE *f, scalar_mode mode,
const FIXED_VALUE_TYPE *a, bool sat_p)
{
bool overflow_p = false;
@ -947,7 +947,7 @@ fixed_convert (FIXED_VALUE_TYPE *f, machine_mode mode,
Return true, if !SAT_P and overflow. */
bool
fixed_convert_from_int (FIXED_VALUE_TYPE *f, machine_mode mode,
fixed_convert_from_int (FIXED_VALUE_TYPE *f, scalar_mode mode,
double_int a, bool unsigned_p, bool sat_p)
{
bool overflow_p = false;
@ -1031,7 +1031,7 @@ fixed_convert_from_int (FIXED_VALUE_TYPE *f, machine_mode mode,
Return true, if !SAT_P and overflow. */
bool
fixed_convert_from_real (FIXED_VALUE_TYPE *f, machine_mode mode,
fixed_convert_from_real (FIXED_VALUE_TYPE *f, scalar_mode mode,
const REAL_VALUE_TYPE *a, bool sat_p)
{
bool overflow_p = false;
@ -1090,7 +1090,7 @@ fixed_convert_from_real (FIXED_VALUE_TYPE *f, machine_mode mode,
/* Convert to a new real mode from a fixed-point. */
void
real_convert_from_fixed (REAL_VALUE_TYPE *r, machine_mode mode,
real_convert_from_fixed (REAL_VALUE_TYPE *r, scalar_mode mode,
const FIXED_VALUE_TYPE *f)
{
REAL_VALUE_TYPE base_value, fixed_value, real_value;

15
gcc/fixed-value.h
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@ -47,14 +47,13 @@ extern rtx const_fixed_from_fixed_value (FIXED_VALUE_TYPE, machine_mode);
/* Construct a FIXED_VALUE from a bit payload and machine mode MODE.
The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */
extern FIXED_VALUE_TYPE fixed_from_double_int (double_int,
machine_mode);
extern FIXED_VALUE_TYPE fixed_from_double_int (double_int, scalar_mode);
/* Return a CONST_FIXED from a bit payload and machine mode MODE.
The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */
static inline rtx
const_fixed_from_double_int (double_int payload,
machine_mode mode)
scalar_mode mode)
{
return
const_fixed_from_fixed_value (fixed_from_double_int (payload, mode),
@ -63,25 +62,25 @@ const_fixed_from_double_int (double_int payload,
/* Initialize from a decimal or hexadecimal string. */
extern void fixed_from_string (FIXED_VALUE_TYPE *, const char *,
machine_mode);
scalar_mode);
/* In tree.c: wrap up a FIXED_VALUE_TYPE in a tree node. */
extern tree build_fixed (tree, FIXED_VALUE_TYPE);
/* Extend or truncate to a new mode. */
extern bool fixed_convert (FIXED_VALUE_TYPE *, machine_mode,
extern bool fixed_convert (FIXED_VALUE_TYPE *, scalar_mode,
const FIXED_VALUE_TYPE *, bool);
/* Convert to a fixed-point mode from an integer. */
extern bool fixed_convert_from_int (FIXED_VALUE_TYPE *, machine_mode,
extern bool fixed_convert_from_int (FIXED_VALUE_TYPE *, scalar_mode,
double_int, bool, bool);
/* Convert to a fixed-point mode from a real. */
extern bool fixed_convert_from_real (FIXED_VALUE_TYPE *, machine_mode,
extern bool fixed_convert_from_real (FIXED_VALUE_TYPE *, scalar_mode,
const REAL_VALUE_TYPE *, bool);
/* Convert to a real mode from a fixed-point. */
extern void real_convert_from_fixed (REAL_VALUE_TYPE *, machine_mode,
extern void real_convert_from_fixed (REAL_VALUE_TYPE *, scalar_mode,
const FIXED_VALUE_TYPE *);
/* Compare two fixed-point objects for bitwise identity. */