re PR target/85657 (Make __ibm128 a separate type, even if long double uses the IBM double-double format)
[gcc]
2018-06-06 Michael Meissner <meissner@linux.ibm.com>
PR target/85657
* config/rs6000/rs6000-builtin.def (BU_IBM128_2): New helper
macro for __ibm128 built-in functions.
(PACK_IF): Add __ibm128 pack/unpack functions.
(UNPACK_IF): Likewise.
* config/rs6000/rs6000.c (rs6000_builtin_mask_calculate): Do not
enable long double built-in functions if long double is IEEE
128-bit floating point.
(rs6000_invalid_builtin): Update long double built-in function
error message.
(rs6000_expand_builtin): For PACK_IF and UNPACK_IF built-in
functions, adjust the built-in function to use the long double
built-in function if __ibm128 and long double are the same type.
* doc/extend.texi (PowerPC builtins): Update documention for
__builtin_{,un}pack_longdouble. Add documentation for
__builtin_{,un}pack_ibm128.
[gcc/testsuite]
2018-06-06 Michael Meissner <meissner@linux.ibm.com>
PR target/85657
* gcc.target/powerpc/pr85657-4.c: New tests.
* gcc.target/powerpc/pr85657-5.c: Likewise.
* gcc.target/powerpc/pr85657-6.c: Likewise.
From-SVN: r261253
This commit is contained in:
Michael Meissner
Michael Meissner
parent
a983358b0e
commit
f0e5e94235
5 changed files with 98 additions and 9 deletions
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@ -18,6 +18,23 @@
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long double is IBM extended double. Make __float128 use the long
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double type if long double is IEEE 128-bit.
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PR target/85657
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* config/rs6000/rs6000-builtin.def (BU_IBM128_2): New helper
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macro for __ibm128 built-in functions.
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(PACK_IF): Add __ibm128 pack/unpack functions.
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(UNPACK_IF): Likewise.
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* config/rs6000/rs6000.c (rs6000_builtin_mask_calculate): Do not
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enable long double built-in functions if long double is IEEE
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128-bit floating point.
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(rs6000_invalid_builtin): Update long double built-in function
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error message.
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(rs6000_expand_builtin): For PACK_IF and UNPACK_IF built-in
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functions, adjust the built-in function to use the long double
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built-in function if __ibm128 and long double are the same type.
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* doc/extend.texi (PowerPC builtins): Update documention for
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__builtin_{,un}pack_longdouble. Add documentation for
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__builtin_{,un}pack_ibm128.
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2018-06-06 Jim Wilson <jimw@sifive.com>
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* config/riscv/riscv.c (enum riscv_privilege_levels): New.
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@ -628,6 +628,17 @@
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| RS6000_BTC_BINARY), \
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CODE_FOR_ ## ICODE) /* ICODE */
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/* 128-bit __ibm128 floating point builtins (use -mfloat128 to indicate that
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__ibm128 is available). */
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#define BU_IBM128_2(ENUM, NAME, ATTR, ICODE) \
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RS6000_BUILTIN_2 (MISC_BUILTIN_ ## ENUM, /* ENUM */ \
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"__builtin_" NAME, /* NAME */ \
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(RS6000_BTM_HARD_FLOAT /* MASK */ \
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| RS6000_BTM_FLOAT128), \
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(RS6000_BTC_ ## ATTR /* ATTR */ \
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| RS6000_BTC_BINARY), \
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CODE_FOR_ ## ICODE) /* ICODE */
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/* Miscellaneous builtins for instructions added in ISA 3.0. These
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instructions don't require either the DFP or VSX options, just the basic
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ISA 3.0 enablement since they operate on general purpose registers. */
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@ -2324,6 +2335,9 @@ BU_P9_64BIT_MISC_0 (DARN, "darn", MISC, darn)
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BU_LDBL128_2 (PACK_TF, "pack_longdouble", CONST, packtf)
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BU_LDBL128_2 (UNPACK_TF, "unpack_longdouble", CONST, unpacktf)
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BU_IBM128_2 (PACK_IF, "pack_ibm128", CONST, packif)
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BU_IBM128_2 (UNPACK_IF, "unpack_ibm128", CONST, unpackif)
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BU_P7_MISC_2 (PACK_V1TI, "pack_vector_int128", CONST, packv1ti)
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BU_P7_MISC_2 (UNPACK_V1TI, "unpack_vector_int128", CONST, unpackv1ti)
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@ -3907,7 +3907,9 @@ rs6000_builtin_mask_calculate (void)
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| ((TARGET_HTM) ? RS6000_BTM_HTM : 0)
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| ((TARGET_DFP) ? RS6000_BTM_DFP : 0)
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| ((TARGET_HARD_FLOAT) ? RS6000_BTM_HARD_FLOAT : 0)
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| ((TARGET_LONG_DOUBLE_128) ? RS6000_BTM_LDBL128 : 0)
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| ((TARGET_LONG_DOUBLE_128
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&& TARGET_HARD_FLOAT
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&& !TARGET_IEEEQUAD) ? RS6000_BTM_LDBL128 : 0)
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| ((TARGET_FLOAT128_TYPE) ? RS6000_BTM_FLOAT128 : 0)
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| ((TARGET_FLOAT128_HW) ? RS6000_BTM_FLOAT128_HW : 0));
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}
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@ -15339,10 +15341,15 @@ rs6000_invalid_builtin (enum rs6000_builtins fncode)
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else if ((fnmask & RS6000_BTM_P9_MISC) == RS6000_BTM_P9_MISC)
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error ("builtin function %qs requires the %qs option", name,
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"-mcpu=power9");
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else if ((fnmask & (RS6000_BTM_HARD_FLOAT | RS6000_BTM_LDBL128))
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== (RS6000_BTM_HARD_FLOAT | RS6000_BTM_LDBL128))
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error ("builtin function %qs requires the %qs and %qs options",
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name, "-mhard-float", "-mlong-double-128");
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else if ((fnmask & RS6000_BTM_LDBL128) == RS6000_BTM_LDBL128)
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{
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if (!TARGET_HARD_FLOAT)
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error ("builtin function %qs requires the %qs option", name,
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"-mhard-float");
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else
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error ("builtin function %qs requires the %qs option", name,
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TARGET_IEEEQUAD ? "-mabi=ibmlongdouble" : "-mlong-double-128");
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}
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else if ((fnmask & RS6000_BTM_HARD_FLOAT) != 0)
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error ("builtin function %qs requires the %qs option", name,
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"-mhard-float");
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@ -16213,6 +16220,26 @@ rs6000_expand_builtin (tree exp, rtx target, rtx subtarget ATTRIBUTE_UNUSED,
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}
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break;
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/* For the pack and unpack int128 routines, fix up the builtin so it
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uses the correct IBM128 type. */
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case MISC_BUILTIN_PACK_IF:
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if (TARGET_LONG_DOUBLE_128 && !TARGET_IEEEQUAD)
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{
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icode = CODE_FOR_packtf;
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fcode = MISC_BUILTIN_PACK_TF;
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uns_fcode = (size_t)fcode;
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}
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break;
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case MISC_BUILTIN_UNPACK_IF:
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if (TARGET_LONG_DOUBLE_128 && !TARGET_IEEEQUAD)
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{
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icode = CODE_FOR_unpacktf;
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fcode = MISC_BUILTIN_UNPACK_TF;
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uns_fcode = (size_t)fcode;
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}
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break;
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default:
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break;
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}
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@ -15801,6 +15801,8 @@ processors:
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@smallexample
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uint64_t __builtin_ppc_get_timebase ();
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unsigned long __builtin_ppc_mftb ();
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__ibm128 __builtin_unpack_ibm128 (__ibm128, int);
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__ibm128 __builtin_pack_ibm128 (double, double);
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@end smallexample
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The @code{__builtin_ppc_get_timebase} and @code{__builtin_ppc_mftb}
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@ -15883,10 +15885,32 @@ the reciprocal estimate instructions.
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The following functions require @option{-mhard-float} and
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@option{-mmultiple} options.
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@smallexample
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long double __builtin_pack_longdouble (double, double);
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double __builtin_unpack_longdouble (long double, int);
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@end smallexample
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The @code{__builtin_unpack_longdouble} function takes a
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@code{long double} argument and a compile time constant of 0 or 1. If
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the constant is 0, the first @code{double} within the
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@code{long double} is returned, otherwise the second @code{double}
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is returned. The @code{__builtin_unpack_longdouble} function is only
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availble if @code{long double} uses the IBM extended double
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representation.
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The @code{__builtin_pack_longdouble} function takes two @code{double}
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arguments and returns a @code{long double} value that combines the two
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arguments. The @code{__builtin_pack_longdouble} function is only
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availble if @code{long double} uses the IBM extended double
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representation.
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The @code{__builtin_unpack_ibm128} function takes a @code{__ibm128}
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argument and a compile time constant of 0 or 1. If the constant is 0,
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the first @code{double} within the @code{__ibm128} is returned,
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otherwise the second @code{double} is returned.
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The @code{__builtin_pack_ibm128} function takes two @code{double}
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arguments and returns a @code{__ibm128} value that combines the two
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arguments.
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Additional built-in functions are available for the 64-bit PowerPC
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family of processors, for efficient use of 128-bit floating point
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(@code{__float128}) values.
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@node Basic PowerPC Built-in Functions Available on ISA 2.06
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@subsubsection Basic PowerPC Built-in Functions Available on ISA 2.06
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@ -1,3 +1,10 @@
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2018-06-06 Michael Meissner <meissner@linux.ibm.com>
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PR target/85657
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* gcc.target/powerpc/pr85657-4.c: New tests.
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* gcc.target/powerpc/pr85657-5.c: Likewise.
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* gcc.target/powerpc/pr85657-6.c: Likewise.
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2018-06-06 Thomas Koenig <tkoenig@gcc.gnu.org>
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PR fortran/85641
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