Revert "[OpenMP][Clang] Support for target math functions"

This commit appears to be breaking stage-2 builds on GreenDragon. The
OpenMP wrappers for cmath and math.h are copied into the root of the
resource directory and cause a cyclic dependency in module 'Darwin':
Darwin -> std -> Darwin. This blows up when CMake is testing for modules
support and breaks all stage 2 module builds, including the ThinLTO bot
and all LLDB bots.

CMake Error at cmake/modules/HandleLLVMOptions.cmake:497 (message):
  LLVM_ENABLE_MODULES is not supported by this compiler

llvm-svn: 360192

1 files changed, 0 insertions, 10 deletions

diff --git a/clang/lib/Headers/__clang_cuda_cmath.h b/clang/lib/Headers/__clang_cuda_cmath.h
index 82e52d1466a..cbcef0f5653 100644
--- a/clang/lib/Headers/__clang_cuda_cmath.h
+++ b/clang/lib/Headers/__clang_cuda_cmath.h
@@ -30,11 +30,7 @@
 // implementation.  Declaring in the global namespace and pulling into namespace
 // std covers all of the known knowns.
 
-#ifdef _OPENMP
-#define __DEVICE__ static __attribute__((always_inline))
-#else
 #define __DEVICE__ static __device__ __inline__ __attribute__((always_inline))
-#endif
 
 __DEVICE__ long long abs(long long __n) { return ::llabs(__n); }
 __DEVICE__ long abs(long __n) { return ::labs(__n); }
@@ -51,8 +47,6 @@ __DEVICE__ float exp(float __x) { return ::expf(__x); }
 __DEVICE__ float fabs(float __x) { return ::fabsf(__x); }
 __DEVICE__ float floor(float __x) { return ::floorf(__x); }
 __DEVICE__ float fmod(float __x, float __y) { return ::fmodf(__x, __y); }
-// TODO: remove when variant is supported
-#ifndef _OPENMP
 __DEVICE__ int fpclassify(float __x) {
   return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL,
                               FP_ZERO, __x);
@@ -61,7 +55,6 @@ __DEVICE__ int fpclassify(double __x) {
   return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL,
                               FP_ZERO, __x);
 }
-#endif
 __DEVICE__ float frexp(float __arg, int *__exp) {
   return ::frexpf(__arg, __exp);
 }
@@ -441,10 +434,7 @@ using ::remainderf;
 using ::remquof;
 using ::rintf;
 using ::roundf;
-// TODO: remove once variant is supported
-#ifndef _OPENMP
 using ::scalblnf;
-#endif
 using ::scalbnf;
 using ::sinf;
 using ::sinhf;