[CUDA][Windows] Restrict long double device functions declarations to Windows

As agreed in D60220, make long double declarations unobservable on non-windows platforms.

[Testing]
{Windows 10, Ubuntu 16.04.5}/{Visual C++ 2017 15.9.11 & 2019 16.0.1, gcc+ 5.4.0}/CUDA {8.0, 9.0, 9.1, 9.2, 10.0, 10.1}

Reviewed by: Artem Belevich

Differential Revision: https://reviews.llvm.org/D60818

llvm-svn: 358654

3 files changed, 12 insertions, 3 deletions

diff --git a/clang/lib/Headers/__clang_cuda_cmath.h b/clang/lib/Headers/__clang_cuda_cmath.h
index df873c51690..cbcef0f5653 100644
--- a/clang/lib/Headers/__clang_cuda_cmath.h
+++ b/clang/lib/Headers/__clang_cuda_cmath.h
@@ -64,16 +64,13 @@ __DEVICE__ float frexp(float __arg, int *__exp) {
 #ifndef _MSC_VER
 __DEVICE__ bool isinf(float __x) { return ::__isinff(__x); }
 __DEVICE__ bool isinf(double __x) { return ::__isinf(__x); }
-__DEVICE__ bool isinf(long double __x) { return ::__isinfl(__x); }
 __DEVICE__ bool isfinite(float __x) { return ::__finitef(__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 isfinite(long double __x) { return ::__finitel(__x); }
 __DEVICE__ bool isnan(float __x) { return ::__isnanf(__x); }
 __DEVICE__ bool isnan(double __x) { return ::__isnan(__x); }
-__DEVICE__ bool isnan(long double __x) { return ::__isnanl(__x); }
 #endif
 
 __DEVICE__ bool isgreater(float __x, float __y) {
diff --git a/clang/lib/Headers/__clang_cuda_device_functions.h b/clang/lib/Headers/__clang_cuda_device_functions.h
index f358c274037..1c43f82c3b1 100644
--- a/clang/lib/Headers/__clang_cuda_device_functions.h
+++ b/clang/lib/Headers/__clang_cuda_device_functions.h
@@ -223,7 +223,9 @@ __DEVICE__ int __ffs(int __a) { return __nv_ffs(__a); }
 __DEVICE__ int __ffsll(long long __a) { return __nv_ffsll(__a); }
 __DEVICE__ int __finite(double __a) { return __nv_isfinited(__a); }
 __DEVICE__ int __finitef(float __a) { return __nv_finitef(__a); }
+#ifdef _MSC_VER
 __DEVICE__ int __finitel(long double __a);
+#endif
 __DEVICE__ int __float2int_rd(float __a) { return __nv_float2int_rd(__a); }
 __DEVICE__ int __float2int_rn(float __a) { return __nv_float2int_rn(__a); }
 __DEVICE__ int __float2int_ru(float __a) { return __nv_float2int_ru(__a); }
@@ -432,10 +434,14 @@ __DEVICE__ float __int_as_float(int __a) { return __nv_int_as_float(__a); }
 __DEVICE__ int __isfinited(double __a) { return __nv_isfinited(__a); }
 __DEVICE__ int __isinf(double __a) { return __nv_isinfd(__a); }
 __DEVICE__ int __isinff(float __a) { return __nv_isinff(__a); }
+#ifdef _MSC_VER
 __DEVICE__ int __isinfl(long double __a);
+#endif
 __DEVICE__ int __isnan(double __a) { return __nv_isnand(__a); }
 __DEVICE__ int __isnanf(float __a) { return __nv_isnanf(__a); }
+#ifdef _MSC_VER
 __DEVICE__ int __isnanl(long double __a);
+#endif
 __DEVICE__ double __ll2double_rd(long long __a) {
   return __nv_ll2double_rd(__a);
 }
diff --git a/clang/lib/Headers/__clang_cuda_math_forward_declares.h b/clang/lib/Headers/__clang_cuda_math_forward_declares.h
index 223c038afdb..aa4473494bd 100644
--- a/clang/lib/Headers/__clang_cuda_math_forward_declares.h
+++ b/clang/lib/Headers/__clang_cuda_math_forward_declares.h
@@ -84,14 +84,18 @@ __DEVICE__ double hypot(double, double);
 __DEVICE__ float hypot(float, float);
 __DEVICE__ int ilogb(double);
 __DEVICE__ int ilogb(float);
+#ifdef _MSC_VER
 __DEVICE__ bool isfinite(long double);
+#endif
 __DEVICE__ bool isfinite(double);
 __DEVICE__ bool isfinite(float);
 __DEVICE__ bool isgreater(double, double);
 __DEVICE__ bool isgreaterequal(double, double);
 __DEVICE__ bool isgreaterequal(float, float);
 __DEVICE__ bool isgreater(float, float);
+#ifdef _MSC_VER
 __DEVICE__ bool isinf(long double);
+#endif
 __DEVICE__ bool isinf(double);
 __DEVICE__ bool isinf(float);
 __DEVICE__ bool isless(double, double);
@@ -100,7 +104,9 @@ __DEVICE__ bool islessequal(float, float);
 __DEVICE__ bool isless(float, float);
 __DEVICE__ bool islessgreater(double, double);
 __DEVICE__ bool islessgreater(float, float);
+#ifdef _MSC_VER
 __DEVICE__ bool isnan(long double);
+#endif
 __DEVICE__ bool isnan(double);
 __DEVICE__ bool isnan(float);
 __DEVICE__ bool isnormal(double);