From: Richard Sandiford <richard.sandiford@arm.com>
To: gcc-patches@gcc.gnu.org
Subject: [13/67] Make floatn_mode return an opt_scalar_float_mode
Date: Fri, 09 Dec 2016 13:01:00 -0000 [thread overview]
Message-ID: <87wpf9mf2v.fsf@e105548-lin.cambridge.arm.com> (raw)
In-Reply-To: <87h96dp8u6.fsf@e105548-lin.cambridge.arm.com> (Richard Sandiford's message of "Fri, 09 Dec 2016 12:48:01 +0000")
As per subject.
gcc/
2016-11-24 Richard Sandiford <richard.sandiford@arm.com>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
* target.def (default_floatn_mode): Return an opt_scalar_float_mode.
* doc/tm.texi: Regenerate.
* config/arm/arm.c (arm_floatn_mode): Return an opt_scalar_float_mode.
* config/rs6000/rs6000.c (rs6000_floatn_mode): Likewise.
* targhooks.h (default_floatn_mode): Likewise.
* targhooks.c (default_floatn_mode): Likewise.
* tree.c (build_common_tree_nodes): Update accordingly.
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 6922c4e..45c08bf 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -303,7 +303,7 @@ static bool arm_asm_elf_flags_numeric (unsigned int flags, unsigned int *num);
static unsigned int arm_elf_section_type_flags (tree decl, const char *name,
int reloc);
static void arm_expand_divmod_libfunc (rtx, machine_mode, rtx, rtx, rtx *, rtx *);
-static machine_mode arm_floatn_mode (int, bool);
+static opt_scalar_float_mode arm_floatn_mode (int, bool);
\f
/* Table of machine attributes. */
static const struct attribute_spec arm_attribute_table[] =
@@ -23372,11 +23372,15 @@ arm_excess_precision (enum excess_precision_type type)
/* Implement TARGET_FLOATN_MODE. Make very sure that we don't provide
_Float16 if we are using anything other than ieee format for 16-bit
floating point. Otherwise, punt to the default implementation. */
-static machine_mode
+static opt_scalar_float_mode
arm_floatn_mode (int n, bool extended)
{
if (!extended && n == 16)
- return arm_fp16_format == ARM_FP16_FORMAT_IEEE ? HFmode : VOIDmode;
+ {
+ if (arm_fp16_format == ARM_FP16_FORMAT_IEEE)
+ return HFmode;
+ return opt_scalar_float_mode ();
+ }
return default_floatn_mode (n, extended);
}
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index e868cef..08a069d 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -37693,7 +37693,7 @@ rs6000_vector_mode_supported_p (machine_mode mode)
}
/* Target hook for floatn_mode. */
-static machine_mode
+static opt_scalar_float_mode
rs6000_floatn_mode (int n, bool extended)
{
if (extended)
@@ -37707,10 +37707,10 @@ rs6000_floatn_mode (int n, bool extended)
if (TARGET_FLOAT128_KEYWORD)
return (FLOAT128_IEEE_P (TFmode)) ? TFmode : KFmode;
else
- return VOIDmode;
+ return opt_scalar_float_mode ();
case 128:
- return VOIDmode;
+ return opt_scalar_float_mode ();
default:
/* Those are the only valid _FloatNx types. */
@@ -37731,10 +37731,10 @@ rs6000_floatn_mode (int n, bool extended)
if (TARGET_FLOAT128_KEYWORD)
return (FLOAT128_IEEE_P (TFmode)) ? TFmode : KFmode;
else
- return VOIDmode;
+ return opt_scalar_float_mode ();
default:
- return VOIDmode;
+ return opt_scalar_float_mode ();
}
}
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 199ec75..187d20d 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -4258,22 +4258,22 @@ hook returns true for all of @code{SFmode}, @code{DFmode},
@code{XFmode} and @code{TFmode}, if such modes exist.
@end deftypefn
-@deftypefn {Target Hook} machine_mode TARGET_FLOATN_MODE (int @var{n}, bool @var{extended})
+@deftypefn {Target Hook} opt_scalar_float_mode TARGET_FLOATN_MODE (int @var{n}, bool @var{extended})
Define this to return the machine mode to use for the type
@code{_Float@var{n}}, if @var{extended} is false, or the type
-@code{_Float@var{n}x}, if @var{extended} is true. If such a type
-is not supported, return @code{VOIDmode}. The default version of this
-hook returns @code{SFmode} for @code{_Float32}, @code{DFmode} for
+@code{_Float@var{n}x}, if @var{extended} is true. If such a type is not
+supported, return @code{opt_scalar_float_mode ()}. The default version of
+this hook returns @code{SFmode} for @code{_Float32}, @code{DFmode} for
@code{_Float64} and @code{_Float32x} and @code{TFmode} for
@code{_Float128}, if those modes exist and satisfy the requirements for
those types and pass @code{TARGET_SCALAR_MODE_SUPPORTED_P} and
@code{TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P}; for @code{_Float64x}, it
returns the first of @code{XFmode} and @code{TFmode} that exists and
satisfies the same requirements; for other types, it returns
-@code{VOIDmode}. The hook is only called for values of @var{n} and
-@var{extended} that are valid according to ISO/IEC TS 18661-3:2015; that
-is, @var{n} is one of 32, 64, 128, or, if @var{extended} is false, 16 or
-greater than 128 and a multiple of 32.
+@code{opt_scalar_float_mode ()}. The hook is only called for values
+of @var{n} and @var{extended} that are valid according to
+ISO/IEC TS 18661-3:2015; that is, @var{n} is one of 32, 64, 128, or,
+if @var{extended} is false, 16 or greater than 128 and a multiple of 32.
@end deftypefn
@deftypefn {Target Hook} bool TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P (machine_mode @var{mode})
diff --git a/gcc/target.def b/gcc/target.def
index 3574ea8..09b23b2 100644
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -3365,20 +3365,20 @@ DEFHOOK
(floatn_mode,
"Define this to return the machine mode to use for the type \n\
@code{_Float@var{n}}, if @var{extended} is false, or the type \n\
-@code{_Float@var{n}x}, if @var{extended} is true. If such a type \n\
-is not supported, return @code{VOIDmode}. The default version of this \n\
-hook returns @code{SFmode} for @code{_Float32}, @code{DFmode} for \n\
+@code{_Float@var{n}x}, if @var{extended} is true. If such a type is not\n\
+supported, return @code{opt_scalar_float_mode ()}. The default version of\n\
+this hook returns @code{SFmode} for @code{_Float32}, @code{DFmode} for\n\
@code{_Float64} and @code{_Float32x} and @code{TFmode} for \n\
@code{_Float128}, if those modes exist and satisfy the requirements for \n\
those types and pass @code{TARGET_SCALAR_MODE_SUPPORTED_P} and \n\
@code{TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P}; for @code{_Float64x}, it \n\
returns the first of @code{XFmode} and @code{TFmode} that exists and \n\
satisfies the same requirements; for other types, it returns \n\
-@code{VOIDmode}. The hook is only called for values of @var{n} and \n\
-@var{extended} that are valid according to ISO/IEC TS 18661-3:2015; that \n\
-is, @var{n} is one of 32, 64, 128, or, if @var{extended} is false, 16 or \n\
-greater than 128 and a multiple of 32.",
- machine_mode, (int n, bool extended),
+@code{opt_scalar_float_mode ()}. The hook is only called for values\n\
+of @var{n} and @var{extended} that are valid according to\n\
+ISO/IEC TS 18661-3:2015; that is, @var{n} is one of 32, 64, 128, or,\n\
+if @var{extended} is false, 16 or greater than 128 and a multiple of 32.",
+ opt_scalar_float_mode, (int n, bool extended),
default_floatn_mode)
/* Compute cost of moving data from a register of class FROM to one of
diff --git a/gcc/targhooks.c b/gcc/targhooks.c
index 6178096..f8a9fae 100644
--- a/gcc/targhooks.c
+++ b/gcc/targhooks.c
@@ -467,12 +467,12 @@ default_libgcc_floating_mode_supported_p (machine_mode mode)
/* Return the machine mode to use for the type _FloatN, if EXTENDED is
false, or _FloatNx, if EXTENDED is true, or VOIDmode if not
supported. */
-machine_mode
+opt_scalar_float_mode
default_floatn_mode (int n, bool extended)
{
if (extended)
{
- machine_mode cand1 = VOIDmode, cand2 = VOIDmode;
+ opt_scalar_float_mode cand1, cand2;
switch (n)
{
case 32:
@@ -497,20 +497,20 @@ default_floatn_mode (int n, bool extended)
/* Those are the only valid _FloatNx types. */
gcc_unreachable ();
}
- if (cand1 != VOIDmode
- && REAL_MODE_FORMAT (cand1)->ieee_bits > n
- && targetm.scalar_mode_supported_p (cand1)
- && targetm.libgcc_floating_mode_supported_p (cand1))
+ if (cand1.exists ()
+ && REAL_MODE_FORMAT (*cand1)->ieee_bits > n
+ && targetm.scalar_mode_supported_p (*cand1)
+ && targetm.libgcc_floating_mode_supported_p (*cand1))
return cand1;
- if (cand2 != VOIDmode
- && REAL_MODE_FORMAT (cand2)->ieee_bits > n
- && targetm.scalar_mode_supported_p (cand2)
- && targetm.libgcc_floating_mode_supported_p (cand2))
+ if (cand2.exists ()
+ && REAL_MODE_FORMAT (*cand2)->ieee_bits > n
+ && targetm.scalar_mode_supported_p (*cand2)
+ && targetm.libgcc_floating_mode_supported_p (*cand2))
return cand2;
}
else
{
- machine_mode cand = VOIDmode;
+ opt_scalar_float_mode cand;
switch (n)
{
case 16:
@@ -543,13 +543,13 @@ default_floatn_mode (int n, bool extended)
default:
break;
}
- if (cand != VOIDmode
- && REAL_MODE_FORMAT (cand)->ieee_bits == n
- && targetm.scalar_mode_supported_p (cand)
- && targetm.libgcc_floating_mode_supported_p (cand))
+ if (cand.exists ()
+ && REAL_MODE_FORMAT (*cand)->ieee_bits == n
+ && targetm.scalar_mode_supported_p (*cand)
+ && targetm.libgcc_floating_mode_supported_p (*cand))
return cand;
}
- return VOIDmode;
+ return opt_scalar_float_mode ();
}
/* Make some target macros useable by target-independent code. */
diff --git a/gcc/targhooks.h b/gcc/targhooks.h
index 933b70c..7b633c2 100644
--- a/gcc/targhooks.h
+++ b/gcc/targhooks.h
@@ -73,7 +73,7 @@ extern tree default_mangle_assembler_name (const char *);
extern bool default_scalar_mode_supported_p (machine_mode);
extern bool default_libgcc_floating_mode_supported_p (machine_mode);
-extern machine_mode default_floatn_mode (int, bool);
+extern opt_scalar_float_mode default_floatn_mode (int, bool);
extern bool targhook_words_big_endian (void);
extern bool targhook_float_words_big_endian (void);
extern bool default_float_exceptions_rounding_supported_p (void);
diff --git a/gcc/tree.c b/gcc/tree.c
index da295ab..5124576 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -10427,8 +10427,8 @@ build_common_tree_nodes (bool signed_char)
{
int n = floatn_nx_types[i].n;
bool extended = floatn_nx_types[i].extended;
- machine_mode mode = targetm.floatn_mode (n, extended);
- if (mode == VOIDmode)
+ scalar_float_mode mode;
+ if (!targetm.floatn_mode (n, extended).exists (&mode))
continue;
int precision = GET_MODE_PRECISION (mode);
/* Work around the rs6000 KFmode having precision 113 not
next prev parent reply other threads:[~2016-12-09 13:01 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-09 12:48 [0/67] Add wrapper classes for machine_modes Richard Sandiford
2016-12-09 12:50 ` [1/67] Add an E_ prefix to mode names and update case statements Richard Sandiford
2016-12-09 12:52 ` [2/67] Make machine_mode a class Richard Sandiford
2016-12-15 22:34 ` Trevor Saunders
2016-12-09 12:53 ` [3/67] Add GDB pretty printer for machine mode classes Richard Sandiford
2016-12-09 12:54 ` [4/67] Add FOR_EACH iterators for modes Richard Sandiford
2016-12-09 12:55 ` [5/67] Small tweak to array_value_type Richard Sandiford
2016-12-09 12:55 ` [6/67] Make GET_MODE_WIDER return an opt_mode Richard Sandiford
2016-12-09 12:57 ` [8/67] Simplify gen_trunc/extend_conv_libfunc Richard Sandiford
2016-12-09 12:57 ` [7/67] Add scalar_float_mode Richard Sandiford
2016-12-09 14:19 ` David Malcolm
2016-12-09 14:30 ` Richard Sandiford
2016-12-09 12:58 ` [9/67] Add SCALAR_FLOAT_TYPE_MODE Richard Sandiford
2016-12-09 12:59 ` [10/67] Make assemble_real take a scalar_float_mode Richard Sandiford
2016-12-09 13:00 ` [11/67] Add a float_mode_for_size helper function Richard Sandiford
2016-12-09 13:00 ` [12/67] Use opt_scalar_float_mode when iterating over float modes Richard Sandiford
2016-12-09 13:00 ` [0/67] Add wrapper classes for machine_modes Richard Biener
2016-12-09 13:54 ` Richard Sandiford
2016-12-09 13:01 ` Richard Sandiford [this message]
2016-12-09 13:02 ` [14/67] Make libgcc_floating_mode_supported_p take a scalar_float_mode Richard Sandiford
2016-12-09 13:03 ` [15/67] Add scalar_int_mode Richard Sandiford
2016-12-09 13:03 ` [16/67] Add scalar_int_mode_pod Richard Sandiford
2016-12-09 13:04 ` [17/67] Add an int_mode_for_size helper function Richard Sandiford
2016-12-09 13:05 ` [18/67] Make int_mode_for_mode return an opt_scalar_int_mode Richard Sandiford
2016-12-09 13:05 ` [19/67] Add a smallest_int_mode_for_size helper function Richard Sandiford
2016-12-09 13:06 ` [20/67] Replace MODE_INT checks with is_int_mode Richard Sandiford
2016-12-09 13:07 ` [21/67] Replace SCALAR_INT_MODE_P checks with is_a <scalar_int_mode> Richard Sandiford
2016-12-09 13:07 ` [22/67] Replace !VECTOR_MODE_P " Richard Sandiford
2016-12-09 13:08 ` [24/67] Replace a != BLKmode check " Richard Sandiford
2016-12-09 13:22 ` Richard Biener
2016-12-09 14:42 ` Richard Sandiford
2016-12-09 13:08 ` [23/67] Replace != VOIDmode checks " Richard Sandiford
2016-12-09 13:09 ` [25/67] Use is_a <scalar_int_mode> for bitmask optimisations Richard Sandiford
2016-12-09 13:10 ` [26/67] Use is_a <scalar_int_mode> in subreg/extract simplifications Richard Sandiford
2016-12-09 13:10 ` [27/67] Use is_a <scalar_int_mode> before LOAD_EXTEND_OP Richard Sandiford
2016-12-09 13:11 ` [28/67] Use is_a <scalar_int_mode> for miscellaneous types of test Richard Sandiford
2016-12-09 13:12 ` [29/67] Make some *_loc_descriptor helpers take scalar_int_mode Richard Sandiford
2016-12-09 13:12 ` [30/67] Use scalar_int_mode for doubleword splits Richard Sandiford
2016-12-09 13:13 ` [31/67] Use scalar_int_mode for move2add Richard Sandiford
2016-12-09 13:14 ` [33/67] Add a NARROWEST_INT_MODE macro Richard Sandiford
2016-12-09 13:14 ` [32/67] Check is_a <scalar_int_mode> before calling valid_pointer_mode Richard Sandiford
2016-12-09 13:15 ` [34/67] Add a SCALAR_INT_TYPE_MODE macro Richard Sandiford
2016-12-09 13:16 ` [36/67] Use scalar_int_mode in the RTL iv routines Richard Sandiford
2016-12-09 13:16 ` [35/67] Add uses of as_a <scalar_int_mode> Richard Sandiford
2016-12-09 13:17 ` [38/67] Move SCALAR_INT_MODE_P out of strict_volatile_bitfield_p Richard Sandiford
2016-12-09 13:17 ` [37/67] Use scalar_int_mode when emitting cstores Richard Sandiford
2016-12-09 13:18 ` [39/67] Two changes to the get_best_mode interface Richard Sandiford
2016-12-09 13:19 ` [40/67] Use scalar_int_mode for extraction_insn fields Richard Sandiford
2016-12-09 13:20 ` [42/67] Use scalar_int_mode in simplify_shift_const_1 Richard Sandiford
2016-12-09 13:20 ` [41/67] Split scalar integer handling out of force_to_mode Richard Sandiford
2016-12-09 13:22 ` [44/67] Make simplify_and_const_int take a scalar_int_mode Richard Sandiford
2016-12-09 13:22 ` [43/67] Use scalar_int_mode in simplify_comparison Richard Sandiford
2016-12-09 13:23 ` [46/67] Make widest_int_mode_for_size return a scalar_int_mode Richard Sandiford
2016-12-09 13:23 ` [45/67] Make extract_left_shift take " Richard Sandiford
2016-12-09 13:24 ` [47/67] Make subroutines of nonzero_bits operate on scalar_int_mode Richard Sandiford
2016-12-09 13:25 ` [48/67] Make subroutines of num_sign_bit_copies " Richard Sandiford
2016-12-09 13:25 ` [49/67] Simplify nonzero/num_sign_bits hooks Richard Sandiford
2016-12-09 13:28 ` [50/67] Add helper routines for SUBREG_PROMOTED_VAR_P subregs Richard Sandiford
2016-12-09 13:30 ` [52/67] Use scalar_int_mode in extract/store_bit_field Richard Sandiford
2016-12-09 13:30 ` [51/67] Use opt_scalar_int_mode when iterating over integer modes Richard Sandiford
2016-12-09 13:31 ` [54/67] Add explicit int checks for alternative optab implementations Richard Sandiford
2016-12-09 13:31 ` [53/67] Pass a mode to const_scalar_mask_from_tree Richard Sandiford
2016-12-09 13:33 ` [56/67] Use the more specific type when two modes are known to be equal Richard Sandiford
2016-12-09 13:33 ` [55/67] Use scalar_int_mode in simplify_const_unary_operation Richard Sandiford
2016-12-09 13:34 ` [57/67] Use scalar_int_mode in expand_expr_addr_expr Richard Sandiford
2016-12-09 13:35 ` [58/67] Use scalar_int_mode in a try_combine optimisation Richard Sandiford
2016-12-09 13:36 ` [59/67] Add a rtx_jump_table_data::get_data_mode helper Richard Sandiford
2016-12-09 13:36 ` [60/67] Pass scalar_int_modes to do_jump_by_parts_* Richard Sandiford
2016-12-09 13:37 ` [61/67] Use scalar_int_mode in the AArch64 port Richard Sandiford
2016-12-09 13:38 ` [62/67] Big machine_mode to scalar_int_mode replacement Richard Sandiford
2016-12-09 13:38 ` [63/67] Simplifications after type switch Richard Sandiford
2016-12-09 13:40 ` [66/67] Add a scalar_mode_pod class Richard Sandiford
2016-12-09 13:40 ` [65/67] Use scalar_mode in the AArch64 port Richard Sandiford
2016-12-09 13:40 ` [64/67] Add a scalar_mode class Richard Sandiford
2016-12-09 13:41 ` [67/67] Add a complex_mode class Richard Sandiford
2016-12-09 18:20 ` [0/67] Add wrapper classes for machine_modes Sandra Loosemore
2017-05-05 7:08 ` Jeff Law
2017-05-24 14:33 ` Richard Sandiford
2017-06-28 17:27 ` Jeff Law
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87wpf9mf2v.fsf@e105548-lin.cambridge.arm.com \
--to=richard.sandiford@arm.com \
--cc=gcc-patches@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).