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Re: [PATCHv2, rs6000] Add minimum __float128 built-in support required for glibc
- From: Bill Schmidt <wschmidt at linux dot vnet dot ibm dot com>
- To: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Cc: Segher Boessenkool <segher at kernel dot crashing dot org>, David Edelsohn <dje dot gcc at gmail dot com>, Joseph Myers <joseph at codesourcery dot com>
- Date: Thu, 23 Jun 2016 17:24:36 -0500
- Subject: Re: [PATCHv2, rs6000] Add minimum __float128 built-in support required for glibc
- Authentication-results: sourceware.org; auth=none
- References: <DEA68D1C-CC68-4458-986E-6DF38ABA37F5 at linux dot vnet dot ibm dot com> <409D9BFC-27C5-4FDB-80C4-B6B85AE0AC84 at linux dot vnet dot ibm dot com>
After discussing with the glibc folks, I'd like to propose that this patch
be altered to use the 'q' suffix for the builtin names. That way we won't
have a naming conflict with Joseph's patch in the short term, and we'll
be able to stage the movement on trunk to the f128 support.
I've been informed that there are other packages/libraries that assume
the 'q' suffix, so we will need both anyway. For the time being, we can
use #defines for glibc using GCC 6 to define the f128 functions to be
the q functions. We'll plan to normalize to use the arch-neutral f128
builtins after the 6.2 push completes.
If this is acceptable, I'll respin the patch with the new names and we
can move ahead.
Thanks,
Bill
> On Jun 23, 2016, at 4:57 PM, Bill Schmidt <wschmidt@linux.vnet.ibm.com> wrote:
>
> So, I wasn't quite clear here... this is what I want to be able to put in
> 6.2. Normally we would put it upstream in trunk for burn-in, and then
> backport after a bit.
>
> Unfortunately we are going to have a naming conflict with Joseph's
> patch to add the _Floatn, etc., builtin support. So we can't put this
> directly upstream.
>
> We are in a bit of a quandary with timing to get this upstream for 6.2.
> It seems for trunk we need to redevelop the patch after Joseph's
> patch lands. It is probably not too hard to make that all work, but I
> need to understand it better. Many portions of this patch won't be
> appropriate for trunk, unless we choose to rename all the functions
> to use a q suffix instead of f128. I'm not sure how our glibc fellows
> would feel about a change in naming, but probably not excited.
>
> So, not quite sure where to go with this in order to get the code in
> 6.2 before it closes. Open to advice.
>
> Bill
>
>> On Jun 23, 2016, at 4:44 PM, Bill Schmidt <wschmidt@linux.vnet.ibm.com> wrote:
>>
>> Hi,
>>
>> This is a revision of my previous patch, correcting two issues. The inff128
>> and huge_valf128 builtins now participate in folding so they are suitable
>> for use in static initializers, and the new builtins are now documented.
>> We no longer have a half-clever implementation to construct an infinity
>> inside vector registers, or the full-clever one that Segher proposed in
>> response. :) We can try to add that support later if desired.
>>
>> Regstrap in progress for powerpc64le-unknown-linux-gnu. Provided
>> there are no regressions, is this ok?
>>
>> Thanks,
>> Bill
>>
>>
>> [gcc]
>>
>> 2016-06-23 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
>>
>> * config/rs6000/rs6000-builtin.def (BU_FLOAT128_2): New #define.
>> (BU_FLOAT128_1): Likewise.
>> (FABSF128): Likewise.
>> (COPYSIGNF128): Likewise.
>> (RS6000_BUILTIN_NANF128): Likewise.
>> (RS6000_BUILTIN_NANSF128): Likewise.
>> (RS6000_BUILTIN_INFF128): Likewise.
>> (RS6000_BUILTIN_HUGE_VALF128): Likewise.
>> * config/rs6000/rs6000.c (rs6000_fold_builtin): New prototype.
>> (TARGET_FOLD_BUILTIN): New #define.
>> (rs6000_builtin_mask_calculate): Add TARGET_FLOAT128 entry.
>> (rs6000_invalid_builtin): Add handling for RS6000_BTM_FLOAT128.
>> (rs6000_fold_builtin): New target hook implementation, handling
>> folding of 128-bit NaNs and infinities.
>> (rs6000_init_builtins): Initialize const_str_type_node; ensure all
>> entries are filled in to avoid problems during bootstrap
>> self-test; define builtins for 128-bit NaNs and infinities.
>> (rs6000_opt_mask): Add entry for float128.
>> * config/rs6000/rs6000.h (RS6000_BTM_FLOAT128): New #define.
>> (RS6000_BTM_COMMON): Include RS6000_BTM_FLOAT128.
>> (rs6000_builtin_type_index): Add RS6000_BTI_const_str.
>> (const_str_type_node): New #define.
>> * config/rs6000/rs6000.md (copysign<mode>3 for IEEE128): Convert
>> to a define_expand that dispatches to either copysign<mode>3_soft
>> or copysign<mode>3_hard.
>> (copysign<mode>3_hard): Rename from copysign<mode>3.
>> (copysign<mode>3_soft): New define_insn.
>> * doc/extend.texi: Document new builtins.
>>
>> [gcc/testsuite]
>>
>> 2016-06-23 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
>>
>> * gcc.target/powerpc/abs128-1.c: New.
>> * gcc.target/powerpc/copysign128-1.c: New.
>> * gcc.target/powerpc/inf128-1.c: New.
>> * gcc.target/powerpc/nan128-1.c: New.
>>
>>
>> Index: gcc/config/rs6000/rs6000-builtin.def
>> ===================================================================
>> --- gcc/config/rs6000/rs6000-builtin.def (revision 237619)
>> +++ gcc/config/rs6000/rs6000-builtin.def (working copy)
>> @@ -652,7 +652,23 @@
>> | RS6000_BTC_BINARY), \
>> CODE_FOR_ ## ICODE) /* ICODE */
>>
>> +/* IEEE 128-bit floating-point builtins. */
>> +#define BU_FLOAT128_2(ENUM, NAME, ATTR, ICODE) \
>> + RS6000_BUILTIN_2 (MISC_BUILTIN_ ## ENUM, /* ENUM */ \
>> + "__builtin_" NAME, /* NAME */ \
>> + RS6000_BTM_FLOAT128, /* MASK */ \
>> + (RS6000_BTC_ ## ATTR /* ATTR */ \
>> + | RS6000_BTC_BINARY), \
>> + CODE_FOR_ ## ICODE) /* ICODE */
>>
>> +#define BU_FLOAT128_1(ENUM, NAME, ATTR, ICODE) \
>> + RS6000_BUILTIN_1 (MISC_BUILTIN_ ## ENUM, /* ENUM */ \
>> + "__builtin_" NAME, /* NAME */ \
>> + RS6000_BTM_FLOAT128, /* MASK */ \
>> + (RS6000_BTC_ ## ATTR /* ATTR */ \
>> + | RS6000_BTC_UNARY), \
>> + CODE_FOR_ ## ICODE) /* ICODE */
>> +
>> /* Miscellaneous builtins for instructions added in ISA 3.0. These
>> instructions don't require either the DFP or VSX options, just the basic
>> ISA 3.0 enablement since they operate on general purpose registers. */
>> @@ -1814,6 +1830,11 @@ BU_P9V_OVERLOAD_1 (VPRTYBD, "vprtybd")
>> BU_P9V_OVERLOAD_1 (VPRTYBQ, "vprtybq")
>> BU_P9V_OVERLOAD_1 (VPRTYBW, "vprtybw")
>>
>> +/* 1 argument IEEE 128-bit floating-point functions. */
>> +BU_FLOAT128_1 (FABSF128, "fabsf128", CONST, abskf2)
>> +
>> +/* 2 argument IEEE 128-bit floating-point functions. */
>> +BU_FLOAT128_2 (COPYSIGNF128, "copysignf128", CONST, copysignkf3)
>>
>> /* 1 argument crypto functions. */
>> BU_CRYPTO_1 (VSBOX, "vsbox", CONST, crypto_vsbox)
>> @@ -2191,6 +2212,18 @@ BU_SPECIAL_X (RS6000_BUILTIN_CPU_IS, "__builtin_cp
>> BU_SPECIAL_X (RS6000_BUILTIN_CPU_SUPPORTS, "__builtin_cpu_supports",
>> RS6000_BTM_ALWAYS, RS6000_BTC_MISC)
>>
>> +BU_SPECIAL_X (RS6000_BUILTIN_NANF128, "__builtin_nanf128",
>> + RS6000_BTM_FLOAT128, RS6000_BTC_CONST)
>> +
>> +BU_SPECIAL_X (RS6000_BUILTIN_NANSF128, "__builtin_nansf128",
>> + RS6000_BTM_FLOAT128, RS6000_BTC_CONST)
>> +
>> +BU_SPECIAL_X (RS6000_BUILTIN_INFF128, "__builtin_inff128",
>> + RS6000_BTM_FLOAT128, RS6000_BTC_CONST)
>> +
>> +BU_SPECIAL_X (RS6000_BUILTIN_HUGE_VALF128, "__builtin_huge_valf128",
>> + RS6000_BTM_FLOAT128, RS6000_BTC_CONST)
>> +
>> /* Darwin CfString builtin. */
>> BU_SPECIAL_X (RS6000_BUILTIN_CFSTRING, "__builtin_cfstring", RS6000_BTM_ALWAYS,
>> RS6000_BTC_MISC)
>> Index: gcc/config/rs6000/rs6000.c
>> ===================================================================
>> --- gcc/config/rs6000/rs6000.c (revision 237619)
>> +++ gcc/config/rs6000/rs6000.c (working copy)
>> @@ -1328,6 +1328,7 @@ static bool rs6000_secondary_reload_move (enum rs6
>> bool);
>> rtl_opt_pass *make_pass_analyze_swaps (gcc::context*);
>> static bool rs6000_keep_leaf_when_profiled () __attribute__ ((unused));
>> +static tree rs6000_fold_builtin (tree, int, tree *, bool);
>>
>> /* Hash table stuff for keeping track of TOC entries. */
>>
>> @@ -1602,6 +1603,9 @@ static const struct attribute_spec rs6000_attribut
>> #undef TARGET_BUILTIN_DECL
>> #define TARGET_BUILTIN_DECL rs6000_builtin_decl
>>
>> +#undef TARGET_FOLD_BUILTIN
>> +#define TARGET_FOLD_BUILTIN rs6000_fold_builtin
>> +
>> #undef TARGET_EXPAND_BUILTIN
>> #define TARGET_EXPAND_BUILTIN rs6000_expand_builtin
>>
>> @@ -3682,7 +3686,8 @@ rs6000_builtin_mask_calculate (void)
>> | ((TARGET_HTM) ? RS6000_BTM_HTM : 0)
>> | ((TARGET_DFP) ? RS6000_BTM_DFP : 0)
>> | ((TARGET_HARD_FLOAT) ? RS6000_BTM_HARD_FLOAT : 0)
>> - | ((TARGET_LONG_DOUBLE_128) ? RS6000_BTM_LDBL128 : 0));
>> + | ((TARGET_LONG_DOUBLE_128) ? RS6000_BTM_LDBL128 : 0)
>> + | ((TARGET_FLOAT128) ? RS6000_BTM_FLOAT128 : 0));
>> }
>>
>> /* Implement TARGET_MD_ASM_ADJUST. All asm statements are considered
>> @@ -15510,11 +15515,57 @@ rs6000_invalid_builtin (enum rs6000_builtins fncod
>> " -mlong-double-128 options", name);
>> else if ((fnmask & RS6000_BTM_HARD_FLOAT) != 0)
>> error ("Builtin function %s requires the -mhard-float option", name);
>> + else if ((fnmask & RS6000_BTM_FLOAT128) != 0)
>> + error ("Builtin function %s requires the -mfloat128 option", name);
>> else
>> error ("Builtin function %s is not supported with the current options",
>> name);
>> }
>>
>> +/* Target hook for early folding of built-ins, shamelessly stolen
>> + from ia64.c. */
>> +
>> +static tree
>> +rs6000_fold_builtin (tree fndecl, int n_args ATTRIBUTE_UNUSED,
>> + tree *args, bool ignore ATTRIBUTE_UNUSED)
>> +{
>> + if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
>> + {
>> + enum rs6000_builtins fn_code
>> + = (enum rs6000_builtins) DECL_FUNCTION_CODE (fndecl);
>> + switch (fn_code)
>> + {
>> + case RS6000_BUILTIN_NANF128:
>> + case RS6000_BUILTIN_NANSF128:
>> + {
>> + tree type = TREE_TYPE (TREE_TYPE (fndecl));
>> + const char *str = c_getstr (*args);
>> + int quiet = fn_code == RS6000_BUILTIN_NANF128;
>> + REAL_VALUE_TYPE real;
>> +
>> + if (str && real_nan (&real, str, quiet, TYPE_MODE (type)))
>> + return build_real (type, real);
>> + return NULL_TREE;
>> + }
>> + case RS6000_BUILTIN_INFF128:
>> + case RS6000_BUILTIN_HUGE_VALF128:
>> + {
>> + tree type = TREE_TYPE (TREE_TYPE (fndecl));
>> + REAL_VALUE_TYPE inf;
>> + real_inf (&inf);
>> + return build_real (type, inf);
>> + }
>> + default:
>> + break;
>> + }
>> + }
>> +#ifdef SUBTARGET_FOLD_BUILTIN
>> + return SUBTARGET_FOLD_BUILTIN (fndecl, n_args, args, ignore);
>> +#else
>> + return NULL_TREE;
>> +#endif
>> +}
>> +
>> /* Expand an expression EXP that calls a built-in function,
>> with result going to TARGET if that's convenient
>> (and in mode MODE if that's convenient).
>> @@ -15769,6 +15820,10 @@ rs6000_init_builtins (void)
>> opaque_p_V2SI_type_node = build_pointer_type (opaque_V2SI_type_node);
>> opaque_V4SI_type_node = build_opaque_vector_type (intSI_type_node, 4);
>>
>> + const_str_type_node
>> + = build_pointer_type (build_qualified_type (char_type_node,
>> + TYPE_QUAL_CONST));
>> +
>> /* We use V1TI mode as a special container to hold __int128_t items that
>> must live in VSX registers. */
>> if (intTI_type_node)
>> @@ -15831,6 +15886,12 @@ rs6000_init_builtins (void)
>> lang_hooks.types.register_builtin_type (ibm128_float_type_node,
>> "__ibm128");
>> }
>> + else
>> + {
>> + /* All types must be nonzero, or self-test barfs during bootstrap. */
>> + ieee128_float_type_node = long_double_type_node;
>> + ibm128_float_type_node = long_double_type_node;
>> + }
>>
>> /* Initialize the modes for builtin_function_type, mapping a machine mode to
>> tree type node. */
>> @@ -15972,6 +16033,15 @@ rs6000_init_builtins (void)
>> if (TARGET_EXTRA_BUILTINS || TARGET_SPE || TARGET_PAIRED_FLOAT)
>> rs6000_common_init_builtins ();
>>
>> + ftype = build_function_type_list (ieee128_float_type_node,
>> + const_str_type_node, NULL_TREE);
>> + def_builtin ("__builtin_nanf128", ftype, RS6000_BUILTIN_NANF128);
>> + def_builtin ("__builtin_nansf128", ftype, RS6000_BUILTIN_NANSF128);
>> +
>> + ftype = build_function_type_list (ieee128_float_type_node, NULL_TREE);
>> + def_builtin ("__builtin_inff128", ftype, RS6000_BUILTIN_INFF128);
>> + def_builtin ("__builtin_huge_valf128", ftype, RS6000_BUILTIN_HUGE_VALF128);
>> +
>> ftype = builtin_function_type (DFmode, DFmode, DFmode, VOIDmode,
>> RS6000_BUILTIN_RECIP, "__builtin_recipdiv");
>> def_builtin ("__builtin_recipdiv", ftype, RS6000_BUILTIN_RECIP);
>> @@ -35569,6 +35639,7 @@ static struct rs6000_opt_mask const rs6000_builtin
>> { "hard-dfp", RS6000_BTM_DFP, false, false },
>> { "hard-float", RS6000_BTM_HARD_FLOAT, false, false },
>> { "long-double-128", RS6000_BTM_LDBL128, false, false },
>> + { "float128", RS6000_BTM_FLOAT128, false, false },
>> };
>>
>> /* Option variables that we want to support inside attribute((target)) and
>> Index: gcc/config/rs6000/rs6000.h
>> ===================================================================
>> --- gcc/config/rs6000/rs6000.h (revision 237619)
>> +++ gcc/config/rs6000/rs6000.h (working copy)
>> @@ -2689,6 +2689,7 @@ extern int frame_pointer_needed;
>> #define RS6000_BTM_HARD_FLOAT MASK_SOFT_FLOAT /* Hardware floating point. */
>> #define RS6000_BTM_LDBL128 MASK_MULTIPLE /* 128-bit long double. */
>> #define RS6000_BTM_64BIT MASK_64BIT /* 64-bit addressing. */
>> +#define RS6000_BTM_FLOAT128 MASK_P9_VECTOR /* IEEE 128-bit float. */
>>
>> #define RS6000_BTM_COMMON (RS6000_BTM_ALTIVEC \
>> | RS6000_BTM_VSX \
>> @@ -2705,7 +2706,8 @@ extern int frame_pointer_needed;
>> | RS6000_BTM_CELL \
>> | RS6000_BTM_DFP \
>> | RS6000_BTM_HARD_FLOAT \
>> - | RS6000_BTM_LDBL128)
>> + | RS6000_BTM_LDBL128 \
>> + | RS6000_BTM_FLOAT128)
>>
>> /* Define builtin enum index. */
>>
>> @@ -2809,6 +2811,7 @@ enum rs6000_builtin_type_index
>> RS6000_BTI_void, /* void_type_node */
>> RS6000_BTI_ieee128_float, /* ieee 128-bit floating point */
>> RS6000_BTI_ibm128_float, /* IBM 128-bit floating point */
>> + RS6000_BTI_const_str, /* pointer to const char * */
>> RS6000_BTI_MAX
>> };
>>
>> @@ -2865,6 +2868,7 @@ enum rs6000_builtin_type_index
>> #define void_type_internal_node (rs6000_builtin_types[RS6000_BTI_void])
>> #define ieee128_float_type_node (rs6000_builtin_types[RS6000_BTI_ieee128_float])
>> #define ibm128_float_type_node (rs6000_builtin_types[RS6000_BTI_ibm128_float])
>> +#define const_str_type_node (rs6000_builtin_types[RS6000_BTI_const_str])
>>
>> extern GTY(()) tree rs6000_builtin_types[RS6000_BTI_MAX];
>> extern GTY(()) tree rs6000_builtin_decls[RS6000_BUILTIN_COUNT];
>> Index: gcc/config/rs6000/rs6000.md
>> ===================================================================
>> --- gcc/config/rs6000/rs6000.md (revision 237619)
>> +++ gcc/config/rs6000/rs6000.md (working copy)
>> @@ -13326,7 +13326,25 @@
>> "xssqrtqp %0,%1"
>> [(set_attr "type" "vecdiv")])
>>
>> -(define_insn "copysign<mode>3"
>> +(define_expand "copysign<mode>3"
>> + [(use (match_operand:IEEE128 0 "altivec_register_operand" ""))
>> + (use (match_operand:IEEE128 1 "altivec_register_operand" ""))
>> + (use (match_operand:IEEE128 2 "altivec_register_operand" ""))]
>> + "FLOAT128_IEEE_P (<MODE>mode)"
>> +{
>> + if (TARGET_FLOAT128_HW)
>> + emit_insn (gen_copysign<mode>3_hard (operands[0], operands[1],
>> + operands[2]));
>> + else
>> + {
>> + rtx tmp = gen_reg_rtx (<MODE>mode);
>> + emit_insn (gen_copysign<mode>3_soft (operands[0], operands[1],
>> + operands[2], tmp));
>> + }
>> + DONE;
>> +})
>> +
>> +(define_insn "copysign<mode>3_hard"
>> [(set (match_operand:IEEE128 0 "altivec_register_operand" "=v")
>> (unspec:IEEE128
>> [(match_operand:IEEE128 1 "altivec_register_operand" "v")
>> @@ -13336,6 +13354,18 @@
>> "xscpsgnqp %0,%2,%1"
>> [(set_attr "type" "vecsimple")])
>>
>> +(define_insn "copysign<mode>3_soft"
>> + [(set (match_operand:IEEE128 0 "altivec_register_operand" "=v")
>> + (unspec:IEEE128
>> + [(match_operand:IEEE128 1 "altivec_register_operand" "v")
>> + (match_operand:IEEE128 2 "altivec_register_operand" "v")
>> + (match_operand:IEEE128 3 "altivec_register_operand" "+v")]
>> + UNSPEC_COPYSIGN))]
>> + "!TARGET_FLOAT128_HW && FLOAT128_IEEE_P (<MODE>mode)"
>> + "xscpsgndp %x3,%x2,%x1\n\txxpermdi %x0,%x3,%x1,1"
>> + [(set_attr "type" "veccomplex")
>> + (set_attr "length" "8")])
>> +
>> (define_insn "neg<mode>2_hw"
>> [(set (match_operand:IEEE128 0 "altivec_register_operand" "=v")
>> (neg:IEEE128
>> Index: gcc/doc/extend.texi
>> ===================================================================
>> --- gcc/doc/extend.texi (revision 237619)
>> +++ gcc/doc/extend.texi (working copy)
>> @@ -14781,6 +14781,38 @@ The @code{__builtin_ppc_mftb} function always gene
>> returns the Time Base Register value as an unsigned long, throwing away
>> the most significant word on 32-bit environments.
>>
>> +Additional built-in functions are available for the 64-bit PowerPC
>> +family of processors, for efficient use of 128-bit floating point
>> +(@code{__float128}) values.
>> +
>> +The following floating-point built-in functions are always available. All
>> +of them implement the function that is part of the name.
>> +
>> +@smallexample
>> +__float128 __builtin_fabsf128 (__float128)
>> +__float128 __builtin_copysignf128 (__float128, __float128)
>> +@end smallexample
>> +
>> +The following built-in functions are always available.
>> +
>> +@table @code
>> +@item __float128 __builtin_inff128 (void)
>> +Similar to @code{__builtin_inf}, except the return type is @code{__float128}.
>> +@findex __builtin_inff128
>> +
>> +@item __float128 __builtin_huge_valf128 (void)
>> +Similar to @code{__builtin_huge_val}, except the return type is @code{__float128}.
>> +@findex __builtin_huge_valf128
>> +
>> +@item __float128 __builtin_nanf128 (void)
>> +Similar to @code{__builtin_nan}, except the return type is @code{__float128}.
>> +@findex __builtin_nanf128
>> +
>> +@item __float128 __builtin_nansf128 (void)
>> +Similar to @code{__builtin_nans}, except the return type is @code{__float128}.
>> +@findex __builtin_nansf128
>> +@end table
>> +
>> The following built-in functions are available for the PowerPC family
>> of processors, starting with ISA 2.06 or later (@option{-mcpu=power7}
>> or @option{-mpopcntd}):
>> Index: gcc/testsuite/gcc.target/powerpc/abs128-1.c
>> ===================================================================
>> --- gcc/testsuite/gcc.target/powerpc/abs128-1.c (revision 0)
>> +++ gcc/testsuite/gcc.target/powerpc/abs128-1.c (working copy)
>> @@ -0,0 +1,61 @@
>> +/* { dg-do run { target { powerpc64*-*-* && vmx_hw } } } */
>> +/* { dg-options "-mfloat128" } */
>> +
>> +void abort ();
>> +
>> +typedef unsigned long long int uint64_t;
>> +
>> +typedef union
>> +{
>> + __float128 value;
>> +
>> + struct
>> + {
>> +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
>> + unsigned negative:1;
>> + unsigned exponent:15;
>> + unsigned quiet_nan:1;
>> + uint64_t mant_high:47;
>> + uint64_t mant_low:64;
>> +#else
>> + uint64_t mant_low:64;
>> + uint64_t mant_high:47;
>> + unsigned quiet_nan:1;
>> + unsigned exponent:15;
>> + unsigned negative:1;
>> +#endif
>> + } nan;
>> +
>> +} ieee854_float128;
>> +
>> +int
>> +main (int argc, int *argv[])
>> +{
>> + ieee854_float128 x, z;
>> +
>> + x.nan.negative = 1;
>> + x.nan.exponent = 0x22;
>> + x.nan.quiet_nan = 0;
>> + x.nan.mant_high = 0x1234;
>> + x.nan.mant_low = 0xabcdef;
>> +
>> + z.value = __builtin_fabsf128 (x.value);
>> +
>> + if (z.nan.negative != 0
>> + || z.nan.exponent != 0x22
>> + || z.nan.quiet_nan != 0
>> + || z.nan.mant_high != 0x1234
>> + || z.nan.mant_low != 0xabcdef)
>> + abort ();
>> +
>> + z.value = __builtin_fabsf128 (z.value);
>> +
>> + if (z.nan.negative != 0
>> + || z.nan.exponent != 0x22
>> + || z.nan.quiet_nan != 0
>> + || z.nan.mant_high != 0x1234
>> + || z.nan.mant_low != 0xabcdef)
>> + abort ();
>> +
>> + return 0;
>> +}
>> Index: gcc/testsuite/gcc.target/powerpc/copysign128-1.c
>> ===================================================================
>> --- gcc/testsuite/gcc.target/powerpc/copysign128-1.c (revision 0)
>> +++ gcc/testsuite/gcc.target/powerpc/copysign128-1.c (working copy)
>> @@ -0,0 +1,58 @@
>> +/* { dg-do run { target { powerpc64*-*-* && vmx_hw } } } */
>> +/* { dg-options "-mfloat128" } */
>> +
>> +void abort ();
>> +
>> +typedef unsigned long long int uint64_t;
>> +
>> +typedef union
>> +{
>> + __float128 value;
>> +
>> + struct
>> + {
>> +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
>> + unsigned negative:1;
>> + unsigned exponent:15;
>> + unsigned quiet_nan:1;
>> + uint64_t mant_high:47;
>> + uint64_t mant_low:64;
>> +#else
>> + uint64_t mant_low:64;
>> + uint64_t mant_high:47;
>> + unsigned quiet_nan:1;
>> + unsigned exponent:15;
>> + unsigned negative:1;
>> +#endif
>> + } nan;
>> +
>> +} ieee854_float128;
>> +
>> +int
>> +main (int argc, int *argv[])
>> +{
>> + ieee854_float128 x, y, z;
>> +
>> + x.nan.negative = 0;
>> + x.nan.exponent = 0x22;
>> + x.nan.quiet_nan = 0;
>> + x.nan.mant_high = 0x1234;
>> + x.nan.mant_low = 0xabcdef;
>> +
>> + y.nan.negative = 1;
>> + y.nan.exponent = 0;
>> + y.nan.quiet_nan = 0;
>> + y.nan.mant_high = 0;
>> + y.nan.mant_low = 0;
>> +
>> + z.value = __builtin_copysignf128 (x.value, y.value);
>> +
>> + if (z.nan.negative != 1
>> + || z.nan.exponent != 0x22
>> + || z.nan.quiet_nan != 0
>> + || z.nan.mant_high != 0x1234
>> + || z.nan.mant_low != 0xabcdef)
>> + abort ();
>> +
>> + return 0;
>> +}
>> Index: gcc/testsuite/gcc.target/powerpc/inf128-1.c
>> ===================================================================
>> --- gcc/testsuite/gcc.target/powerpc/inf128-1.c (revision 0)
>> +++ gcc/testsuite/gcc.target/powerpc/inf128-1.c (working copy)
>> @@ -0,0 +1,55 @@
>> +/* { dg-do run { target { powerpc64*-*-* && vmx_hw } } } */
>> +/* { dg-options "-mfloat128" } */
>> +
>> +void abort ();
>> +
>> +typedef unsigned long long int uint64_t;
>> +
>> +typedef union
>> +{
>> + __float128 value;
>> +
>> + struct
>> + {
>> +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
>> + unsigned negative:1;
>> + unsigned exponent:15;
>> + unsigned quiet_nan:1;
>> + uint64_t mant_high:47;
>> + uint64_t mant_low:64;
>> +#else
>> + uint64_t mant_low:64;
>> + uint64_t mant_high:47;
>> + unsigned quiet_nan:1;
>> + unsigned exponent:15;
>> + unsigned negative:1;
>> +#endif
>> + } nan;
>> +
>> +} ieee854_float128;
>> +
>> +int
>> +main (int argc, int *argv[])
>> +{
>> + ieee854_float128 y;
>> +
>> + y.value = __builtin_inff128 ();
>> +
>> + if (y.nan.negative != 0
>> + || y.nan.exponent != 0x7fff
>> + || y.nan.quiet_nan != 0
>> + || y.nan.mant_high != 0
>> + || y.nan.mant_low != 0)
>> + abort ();
>> +
>> + y.value = __builtin_huge_valf128 ();
>> +
>> + if (y.nan.negative != 0
>> + || y.nan.exponent != 0x7fff
>> + || y.nan.quiet_nan != 0
>> + || y.nan.mant_high != 0
>> + || y.nan.mant_low != 0)
>> + abort ();
>> +
>> + return 0;
>> +}
>> Index: gcc/testsuite/gcc.target/powerpc/nan128-1.c
>> ===================================================================
>> --- gcc/testsuite/gcc.target/powerpc/nan128-1.c (revision 0)
>> +++ gcc/testsuite/gcc.target/powerpc/nan128-1.c (working copy)
>> @@ -0,0 +1,77 @@
>> +/* { dg-do run { target { powerpc64*-*-* && vmx_hw } } } */
>> +/* { dg-options "-mfloat128" } */
>> +
>> +#include <stdio.h>
>> +
>> +void abort ();
>> +
>> +typedef unsigned long long int uint64_t;
>> +
>> +typedef union
>> +{
>> + __float128 value;
>> +
>> + struct
>> + {
>> +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
>> + unsigned negative:1;
>> + unsigned exponent:15;
>> + unsigned quiet_nan:1;
>> + uint64_t mant_high:47;
>> + uint64_t mant_low:64;
>> +#else
>> + uint64_t mant_low:64;
>> + uint64_t mant_high:47;
>> + unsigned quiet_nan:1;
>> + unsigned exponent:15;
>> + unsigned negative:1;
>> +#endif
>> + } nan;
>> +
>> +} ieee854_float128;
>> +
>> +int
>> +main (int argc, int *argv[])
>> +{
>> + ieee854_float128 y;
>> +
>> + y.value = __builtin_nanf128 ("1");
>> +
>> + if (y.nan.negative != 0
>> + || y.nan.exponent != 0x7fff
>> + || y.nan.quiet_nan != 1
>> + || y.nan.mant_high != 0
>> + || y.nan.mant_low != 1)
>> + abort ();
>> +
>> + y.value = __builtin_nanf128 ("0x2ab3c");
>> +
>> + if (y.nan.negative != 0
>> + || y.nan.exponent != 0x7fff
>> + || y.nan.quiet_nan != 1
>> + || y.nan.mant_high != 0
>> + || y.nan.mant_low != 0x2ab3c)
>> + abort ();
>> +
>> + y.value = __builtin_nansf128 ("1");
>> +
>> + if (
>> + y.nan.negative != 0
>> + || y.nan.exponent != 0x7fff
>> + || y.nan.quiet_nan != 0
>> + || y.nan.mant_high != 0
>> + || y.nan.mant_low != 1
>> + )
>> + abort ();
>> +
>> + y.value = __builtin_nansf128 ("0x2ab3c");
>> +
>> + if (y.nan.negative != 0
>> + || y.nan.exponent != 0x7fff
>> + || y.nan.quiet_nan != 0
>> + || y.nan.mant_high != 0
>> + || y.nan.mant_low != 0x2ab3c)
>> + abort ();
>> +
>> + return 0;
>> +}
>>
>