[CUDA] Wrapper header changes necessary to support MacOS.

Reviewers: tra

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D26780

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@287288 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Headers/__clang_cuda_cmath.h b/lib/Headers/__clang_cuda_cmath.h
index 569374584e459e7a0fd0c35560cd0e0a4173475c..0eaa08b30cab1e3d6197a980fb9348673fcc605b 100644 (file)
--- a/lib/Headers/__clang_cuda_cmath.h
+++ b/lib/Headers/__clang_cuda_cmath.h
@@ -75,7 +75,10 @@ __DEVICE__ float frexp(float __arg, int *__exp) {
 __DEVICE__ bool isinf(float __x) { return ::__isinff(__x); }
 __DEVICE__ bool isinf(double __x) { return ::__isinf(__x); }
 __DEVICE__ bool isfinite(float __x) { return ::__finitef(__x); }
-__DEVICE__ bool isfinite(double __x) { return ::__finite(__x); }
+// For inscrutable reasons, __finite(), the double-precision version of
+// __finitef, does not exist when compiling for MacOS.  __isfinited is available
+// everywhere and is just as good.
+__DEVICE__ bool isfinite(double __x) { return ::__isfinited(__x); }
 __DEVICE__ bool isgreater(float __x, float __y) {
   return __builtin_isgreater(__x, __y);
 }
@@ -141,7 +144,7 @@ __DEVICE__ double pow(double __base, int __iexp) {
   return ::powi(__base, __iexp);
 }
 __DEVICE__ bool signbit(float __x) { return ::__signbitf(__x); }
-__DEVICE__ bool signbit(double __x) { return ::__signbit(__x); }
+__DEVICE__ bool signbit(double __x) { return ::__signbitd(__x); }
 __DEVICE__ float sin(float __x) { return ::sinf(__x); }
 __DEVICE__ float sinh(float __x) { return ::sinhf(__x); }
 __DEVICE__ float sqrt(float __x) { return ::sqrtf(__x); }

diff --git a/lib/Headers/__clang_cuda_runtime_wrapper.h b/lib/Headers/__clang_cuda_runtime_wrapper.h
index f311a4cd601f3aaf3efd8045f531cde726519e5e..205e15b40b5d4b7b57860d46c08ae24f2d18eec9 100644 (file)
--- a/lib/Headers/__clang_cuda_runtime_wrapper.h
+++ b/lib/Headers/__clang_cuda_runtime_wrapper.h
@@ -121,6 +121,15 @@
 #undef __cxa_vec_delete3
 #undef __cxa_pure_virtual
 
+// math_functions.hpp expects this host function be defined on MacOS, but it
+// ends up not being there because of the games we play here.  Just define it
+// ourselves; it's simple enough.
+#ifdef __APPLE__
+inline __host__ double __signbitd(double x) {
+  return std::signbit(x);
+}
+#endif
+
 // We need decls for functions in CUDA's libdevice with __device__
 // attribute only. Alas they come either as __host__ __device__ or
 // with no attributes at all. To work around that, define __CUDA_RTC__