[AMDGPU] Fixed MSVC build break

Error was:

field of type 'llvm::ArgDescriptor' has private default constructor
const AMDGPUFunctionArgInfo AMDGPUArgumentUsageInfo::ExternFunctionInfo{};
                                                                        ^

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310048 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h b/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h
index 9373b80e87bbb47af54d9f4f15434e3c422f16a1..bf9635549a8c185d578fcdc44784c605993809b2 100644 (file)
--- a/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h
+++ b/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h
@@ -26,6 +26,7 @@ class TargetRegisterInfo;
 struct ArgDescriptor {
 private:
   friend struct AMDGPUFunctionArgInfo;
+  friend class AMDGPUArgumentUsageInfo;
 
   union {
     unsigned Register;