[clang] [llvm] [SystemZ][z/OS] Add new openFileForReadBinary function, and pass IsText parameter to getBufferForFile (PR #111723)

[Sean Perry via cfe-commits]

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@@ -324,6 +330,17 @@ ErrorOr<Status> RealFileSystem::status(const Twine &Path) {
 
 ErrorOr<std::unique_ptr<File>>
 RealFileSystem::openFileForRead(const Twine &Name) {
+  SmallString<256> RealName, Storage;
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perry-ca wrote:

Can you put this code into a static function or even a private member function so you can avoid the duplication of code. 

https://github.com/llvm/llvm-project/pull/111723