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From: Fangrui Song <maskray@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/maskray/grte] Add a first approximation of float definitions for ppc clang Date: Sat, 28 Aug 2021 00:25:34 +0000 (GMT) [thread overview] Message-ID: <20210828002534.3A9853857C71@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5e4f72b89561e96869d474d56e5bda95c609d863 commit 5e4f72b89561e96869d474d56e5bda95c609d863 Author: Stan Shebs <stanshebs@google.com> Date: Wed Sep 26 14:04:13 2018 -0700 Add a first approximation of float definitions for ppc clang Diff: --- sysdeps/powerpc/bits/floatn.h | 50 ++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 47 insertions(+), 3 deletions(-) diff --git a/sysdeps/powerpc/bits/floatn.h b/sysdeps/powerpc/bits/floatn.h index c3834096e3..11aa974ef3 100644 --- a/sysdeps/powerpc/bits/floatn.h +++ b/sysdeps/powerpc/bits/floatn.h @@ -22,11 +22,17 @@ #include <features.h> #include <bits/long-double.h> +#if 0 /* for macro expansion debugging */ +#define capture0(sym) typedef int sym##_eq_0 +#define capture1(sym) typedef int sym##_eq_1 +/*#define capture(sym, val) extern int sym[val]*/ +#endif + /* Defined to 1 if the current compiler invocation provides a floating-point type with the IEEE 754 binary128 format, and this glibc includes corresponding *f128 interfaces for it. */ #if defined _ARCH_PWR8 && defined __LITTLE_ENDIAN__ && (_CALL_ELF == 2) \ - && defined __FLOAT128__ && !defined __NO_LONG_DOUBLE_MATH + && defined __FLOAT128__ && !defined __NO_LONG_DOUBLE_MATH && !defined __clang__ # define __HAVE_FLOAT128 1 #else # define __HAVE_FLOAT128 0 @@ -51,6 +57,23 @@ double. */ #define __HAVE_FLOAT64X_LONG_DOUBLE 0 +#ifndef __ASSEMBLER__ +#if 0 /* for macro expansion debugging */ +#if __HAVE_FLOAT128 +capture1(i_have_float128); +#else +capture0(i_have_float128); +#endif +#if __HAVE_DISTINCT_FLOAT128 +capture1(i_have_distinct_float128); +#else +capture0(i_have_distinct_float128); +#endif +/*capture(i_have_float128, __HAVE_FLOAT128);*/ +/*capture(i_have_distinct_float128, __HAVE_DISTINCT_FLOAT128);*/ +#endif +#endif + #ifndef __ASSEMBLER__ /* Defined to concatenate the literal suffix to be used with _Float128 @@ -66,7 +89,7 @@ /* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */ # if __HAVE_FLOAT128 -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus +# if !defined __clang__ && (!__GNUC_PREREQ (7, 0) || defined __cplusplus) /* Add a typedef for older GCC compilers which don't natively support _Complex _Float128. */ typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__KC__))); @@ -80,7 +103,7 @@ typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__KC__))); # if __HAVE_FLOAT128 /* The type _Float128 exist for powerpc only since GCC 7.0. */ -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus +# if !defined __clang__ && (!__GNUC_PREREQ (7, 0) || defined __cplusplus) typedef __float128 _Float128; # endif @@ -89,6 +112,21 @@ typedef __float128 _Float128; # define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) # endif +#if defined __clang__ + +#if 1 /* 6.0 or less */ +#define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) +#define __builtin_inff128() ((_Float128) __builtin_inf ()) +#define __builtin_nanf128(x) ((_Float128) __builtin_nan (x)) +#define __builtin_nansf128(x) ((_Float128) __builtin_nans (x)) + +#define __builtin_copysignf128(x,y) ((_Float128) __builtin_copysign ((double)(x),(double)(y))) +#define __builtin_fabsf128(x) ((_Float128) __builtin_fabs ((double)(x))) +#define __builtin_signbitf128(x) (__builtin_signbit (x)) +#endif + +#else /* GCC */ + /* The following builtins (suffixed with 'q') are available in GCC >= 6.2, which is the minimum version required for float128 support on powerpc64le. Since GCC 7.0 the builtins suffixed with f128 are also available, then @@ -101,6 +139,8 @@ typedef __float128 _Float128; # define __builtin_nansf128 __builtin_nansq # endif +#endif /* GCC or clang */ + /* In math/math.h, __MATH_TG will expand signbit to __builtin_signbit*, e.g.: __builtin_signbitf128, before GCC 6. However, there has never been a __builtin_signbitf128 in GCC and the type-generic builtin is @@ -111,6 +151,10 @@ typedef __float128 _Float128; # endif +#if !__HAVE_FLOAT128 && defined __clang__ +typedef long double _Float128; +#endif /* clang fallback */ + #endif /* !__ASSEMBLER__. */ #include <bits/floatn-common.h>
next reply other threads:[~2021-08-28 0:25 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-28 0:25 Fangrui Song [this message] -- strict thread matches above, loose matches on Subject: below -- 2021-08-27 23:48 Fangrui Song
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