[clang] Add missing intrinsics to cuda headers (PR #143664)

[Artem Belevich via cfe-commits]

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@@ -479,7 +479,291 @@ inline __device__ unsigned __funnelshift_rc(unsigned low32, unsigned high32,
   return ret;
 }
 
-#endif // !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 320
+#pragma push_macro("__INTRINSIC_LOAD")
+#define __INTRINSIC_LOAD(__FnName, __AsmOp, __DeclType, __TmpType, __AsmType, \
+                         __Clobber)                                           \
+  inline __device__ __DeclType __FnName(const __DeclType *ptr) {              \
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Artem-B wrote:

`ptr`, and local variables should probably be prefixed, too. Nothing stops the users from passing `-Dptr=1`

https://github.com/llvm/llvm-project/pull/143664