+2017-10-31 Michael Meissner <meissner@linux.vnet.ibm.com>
+
+ * builtins.def (DEF_FLOATN_BUILTIN): Change most _Float<N> and
+ _Float<N>X built-in functions so that the variant without the
+ "__builtin_" prefix is only enabled for the GNU C and Objective C
+ languages when they are in non-strict ANSI/ISO mode.
+ (DEF_EXT_LIB_FLOATN_NX_BUILTINS): Likewise.
+ * target.def (floatn_builtin_p): Add a target hook to control
+ whether _Float<N> and _Float<N>X built-in functions without the
+ "__builtin_" prefix are enabled, and return true for C and
+ Objective C in the default hook. Include langhooks.h in
+ targhooks.c.
+ * targhooks.h (default_floatn_builtin_p): Likewise.
+ * targhooks.c (default_floatn_builtin_p): Likewise.
+ * doc/tm.texi.in (TARGET_FLOATN_BUILTIN_P): Document the
+ floatn_builtin_p target hook.
+ * doc/tm.texi (TARGET_FLOATN_BUILTIN_P): Likewise.
+
2017-10-31 Matthew Fortune <matthew.fortune@imgtec.com>
Eric Botcazou <ebotcazou@adacore.com>
/* A set of GCC builtins for _FloatN and _FloatNx types. TYPE_MACRO is called
with an argument such as FLOAT32 to produce the enum value for the type. If
- we are being fully conformant we ignore the version of these builtins that
- does not being with __builtin_. */
+ we are compiling for the C language with GNU extensions, we enable the name
+ without the __builtin_ prefix as well as the name with the __builtin_
+ prefix. C++ does not enable these names by default because they don't have
+ the _Float<N> and _Float<N>X keywords, and a class based library should use
+ the __builtin_ names. */
+#undef DEF_FLOATN_BUILTIN
+#define DEF_FLOATN_BUILTIN(ENUM, NAME, TYPE, ATTRS) \
+ DEF_BUILTIN (ENUM, "__builtin_" NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
+ targetm.floatn_builtin_p ((int) ENUM), true, true, ATTRS, \
+ false, true)
#undef DEF_EXT_LIB_FLOATN_NX_BUILTINS
-#define DEF_EXT_LIB_FLOATN_NX_BUILTINS(ENUM, NAME, TYPE_MACRO, ATTRS) \
- DEF_EXT_LIB_BUILTIN (ENUM ## F16, NAME "f16", TYPE_MACRO (FLOAT16), ATTRS) \
- DEF_EXT_LIB_BUILTIN (ENUM ## F32, NAME "f32", TYPE_MACRO (FLOAT32), ATTRS) \
- DEF_EXT_LIB_BUILTIN (ENUM ## F64, NAME "f64", TYPE_MACRO (FLOAT64), ATTRS) \
- DEF_EXT_LIB_BUILTIN (ENUM ## F128, NAME "f128", TYPE_MACRO (FLOAT128), ATTRS)\
- DEF_EXT_LIB_BUILTIN (ENUM ## F32X, NAME "f32x", TYPE_MACRO (FLOAT32X), ATTRS)\
- DEF_EXT_LIB_BUILTIN (ENUM ## F64X, NAME "f64x", TYPE_MACRO (FLOAT64X), ATTRS)\
- DEF_EXT_LIB_BUILTIN (ENUM ## F128X, NAME "f128x", TYPE_MACRO (FLOAT128X), \
- ATTRS)
+#define DEF_EXT_LIB_FLOATN_NX_BUILTINS(ENUM, NAME, TYPE_MACRO, ATTRS) \
+ DEF_FLOATN_BUILTIN (ENUM ## F16, NAME "f16", TYPE_MACRO (FLOAT16), ATTRS) \
+ DEF_FLOATN_BUILTIN (ENUM ## F32, NAME "f32", TYPE_MACRO (FLOAT32), ATTRS) \
+ DEF_FLOATN_BUILTIN (ENUM ## F64, NAME "f64", TYPE_MACRO (FLOAT64), ATTRS) \
+ DEF_FLOATN_BUILTIN (ENUM ## F128, NAME "f128", TYPE_MACRO (FLOAT128), ATTRS) \
+ DEF_FLOATN_BUILTIN (ENUM ## F32X, NAME "f32x", TYPE_MACRO (FLOAT32X), ATTRS) \
+ DEF_FLOATN_BUILTIN (ENUM ## F64X, NAME "f64x", TYPE_MACRO (FLOAT64X), ATTRS) \
+ DEF_FLOATN_BUILTIN (ENUM ## F128X, NAME "f128x", TYPE_MACRO (FLOAT128X), \
+ ATTRS)
/* Like DEF_LIB_BUILTIN, except that the function is only a part of
the standard in C94 or above. */
if @var{extended} is false, 16 or greater than 128 and a multiple of 32.
@end deftypefn
+@deftypefn {Target Hook} bool TARGET_FLOATN_BUILTIN_P (int @var{func})
+Define this to return true if the @code{_Float@var{n}} and
+@code{_Float@var{n}x} built-in functions should implicitly enable the
+built-in function without the @code{__builtin_} prefix in addition to the
+normal built-in function with the @code{__builtin_} prefix. The default is
+to only enable built-in functions without the @code{__builtin_} prefix for
+the GNU C langauge. In strict ANSI/ISO mode, the built-in function without
+the @code{__builtin_} prefix is not enabled. The argument @code{FUNC} is the
+@code{enum built_in_function} id of the function to be enabled.
+@end deftypefn
+
@deftypefn {Target Hook} bool TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P (machine_mode @var{mode})
Define this to return nonzero for machine modes for which the port has
small register classes. If this target hook returns nonzero for a given
@hook TARGET_FLOATN_MODE
+@hook TARGET_FLOATN_BUILTIN_P
+
@hook TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P
@node Scalar Return
opt_scalar_float_mode, (int n, bool extended),
default_floatn_mode)
+DEFHOOK
+(floatn_builtin_p,
+ "Define this to return true if the @code{_Float@var{n}} and\n\
+@code{_Float@var{n}x} built-in functions should implicitly enable the\n\
+built-in function without the @code{__builtin_} prefix in addition to the\n\
+normal built-in function with the @code{__builtin_} prefix. The default is\n\
+to only enable built-in functions without the @code{__builtin_} prefix for\n\
+the GNU C langauge. In strict ANSI/ISO mode, the built-in function without\n\
+the @code{__builtin_} prefix is not enabled. The argument @code{FUNC} is the\n\
+@code{enum built_in_function} id of the function to be enabled.",
+ bool, (int func),
+ default_floatn_builtin_p)
+
/* Compute cost of moving data from a register of class FROM to one of
TO, using MODE. */
DEFHOOK
#include "predict.h"
#include "params.h"
#include "real.h"
-
+#include "langhooks.h"
bool
default_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED,
return opt_scalar_float_mode ();
}
+/* Define this to return true if the _Floatn and _Floatnx built-in functions
+ should implicitly enable the built-in function without the __builtin_ prefix
+ in addition to the normal built-in function with the __builtin_ prefix. The
+ default is to only enable built-in functions without the __builtin_ prefix
+ for the GNU C langauge. The argument FUNC is the enum builtin_in_function
+ id of the function to be enabled. */
+
+bool
+default_floatn_builtin_p (int func ATTRIBUTE_UNUSED)
+{
+ static bool first_time_p = true;
+ static bool c_or_objective_c;
+
+ if (first_time_p)
+ {
+ first_time_p = false;
+ c_or_objective_c = lang_GNU_C () || lang_GNU_OBJC ();
+ }
+
+ return c_or_objective_c;
+}
+
/* Make some target macros useable by target-independent code. */
bool
targhook_words_big_endian (void)
extern bool default_scalar_mode_supported_p (scalar_mode);
extern bool default_libgcc_floating_mode_supported_p (scalar_float_mode);
extern opt_scalar_float_mode default_floatn_mode (int, bool);
+extern bool default_floatn_builtin_p (int);
extern bool targhook_words_big_endian (void);
extern bool targhook_float_words_big_endian (void);
extern bool default_float_exceptions_rounding_supported_p (void);
projects / gcc.git / commitdiff