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| author | Fangrui Song <maskray@google.com> | 2021-10-10 14:38:00 -0700 |
|---|---|---|
| committer | Pranav Kant <prka@google.com> | 2023-09-27 19:05:16 +0000 |
| commit | 2676793257d15138178c814e4f8ba75185e9b699 (patch) | |
| tree | 79a930e20d49be5743a34615fdb87d5478986152 | |
| parent | bade6276d16523f81a1dedf22e591730592f15d6 (diff) | |
| download | glibc-2676793257d15138178c814e4f8ba75185e9b699.tar glibc-2676793257d15138178c814e4f8ba75185e9b699.tar.gz glibc-2676793257d15138178c814e4f8ba75185e9b699.tar.bz2 glibc-2676793257d15138178c814e4f8ba75185e9b699.zip | |
x86: Define __HAVE_FLOAT128 for Clang and use __builtin_*f128 code path
Clang supports __builtin_fabsf128 (despite not supporting _Float128) but
_not _builtin_fabsq.
By falling back to `typedef __float128 _Float128;`, the float128 code
will be buildable with Clang.
| -rw-r--r-- | sysdeps/x86/bits/floatn.h | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/sysdeps/x86/bits/floatn.h b/sysdeps/x86/bits/floatn.h index ed7bf122eb..7387bbae38 100644 --- a/sysdeps/x86/bits/floatn.h +++ b/sysdeps/x86/bits/floatn.h @@ -32,7 +32,8 @@ support, for x86_64 and x86. */ #if (defined __x86_64__ \ ? __GNUC_PREREQ (4, 3) \ - : (defined __GNU__ ? __GNUC_PREREQ (4, 5) : __GNUC_PREREQ (4, 4))) + : (defined __GNU__ ? __GNUC_PREREQ (4, 5) : __GNUC_PREREQ (4, 4))) \ + || defined __clang__ # define __HAVE_FLOAT128 1 #else # define __HAVE_FLOAT128 0 @@ -67,7 +68,8 @@ capture(i_have_distinct_float128, __HAVE_DISTINCT_FLOAT128); /* Defined to concatenate the literal suffix to be used with _Float128 types, if __HAVE_FLOAT128 is 1. */ # if __HAVE_FLOAT128 -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus +# if !__GNUC_PREREQ (7, 0) || defined __cplusplus \ + || defined __clang__ /* The literal suffix f128 exists only since GCC 7.0. */ # define __f128(x) x##q # else @@ -77,7 +79,8 @@ capture(i_have_distinct_float128, __HAVE_DISTINCT_FLOAT128); /* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */ # if __HAVE_FLOAT128 -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus +# if !__GNUC_PREREQ (7, 0) || defined __cplusplus \ + || defined __clang__ /* Add a typedef for older GCC compilers which don't natively support _Complex _Float128. */ typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__TC__))); @@ -91,8 +94,8 @@ typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__TC__))); # if __HAVE_FLOAT128 /* The type _Float128 exists only since GCC 7.0. */ -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus -/* need a clang 5.0 case here? */ +# if !__GNUC_PREREQ (7, 0) || defined __cplusplus \ + || defined __clang__ typedef __float128 _Float128; # endif @@ -112,7 +115,7 @@ typedef __float128 _Float128; #else /* GCC */ /* __builtin_huge_valf128 doesn't exist before GCC 7.0. */ -# if !__GNUC_PREREQ (7, 0) +# if !__GNUC_PREREQ (7, 0) && !defined __clang__ # define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) # endif @@ -121,7 +124,7 @@ typedef __float128 _Float128; Converting a narrower sNaN to _Float128 produces a quiet NaN, so attempts to use _Float128 sNaNs will not work properly with older compilers. */ -# if !__GNUC_PREREQ (7, 0) +# if !__GNUC_PREREQ (7, 0) && !defined __clang__ # define __builtin_copysignf128 __builtin_copysignq # define __builtin_fabsf128 __builtin_fabsq # define __builtin_inff128() ((_Float128) __builtin_inf ()) @@ -133,7 +136,7 @@ typedef __float128 _Float128; e.g.: __builtin_signbitf128, before GCC 6. However, there has never been a __builtin_signbitf128 in GCC and the type-generic builtin is only available since GCC 6. */ -# if !__GNUC_PREREQ (6, 0) +# if !__GNUC_PREREQ (6, 0) && !defined __clang__ # define __builtin_signbitf128 __signbitf128 # endif |