[z/OS] treat text files as text files so auto-conversion is done (#90128)

To support auto-conversion on z/OS text files need to be opened as text files. These changes will fix a number of LIT failures due to text files not being converted to the internal code page.

update a number of tools so they open the text files as text files
add support in the cat.py to open a text file as a text file (Windows will continue to treat all files as binary so new lines are handled correctly)
add env var definitions to enable auto-conversion in the lit config file.

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/ToolDrivers/llvm-lib/LibDriver.cpp b/llvm/lib/ToolDrivers/llvm-lib/LibDriver.cpp
index c3015d8..40ee59c 100644
--- a/llvm/lib/ToolDrivers/llvm-lib/LibDriver.cpp
+++ b/llvm/lib/ToolDrivers/llvm-lib/LibDriver.cpp
@@ -95,7 +95,8 @@ static std::vector<StringRef> getSearchPaths(opt::InputArgList *Args,
 
 // Opens a file. Path has to be resolved already. (used for def file)
 std::unique_ptr<MemoryBuffer> openFile(const Twine &Path) {
-  ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> MB = MemoryBuffer::getFile(Path);
+  ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> MB =
+      MemoryBuffer::getFile(Path, /*IsText=*/true);
 
   if (std::error_code EC = MB.getError()) {
     llvm::errs() << "cannot open file " << Path << ": " << EC.message() << "\n";