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llvm-mirror/tools/opt
Abhina Sreeskantharajan 3f0b170fdd [SystemZ][z/OS][Windows] Add new OF_TextWithCRLF flag and use this flag instead of OF_Text
Problem:
On SystemZ we need to open text files in text mode. On Windows, files opened in text mode adds a CRLF '\r\n' which may not be desirable.

Solution:
This patch adds two new flags

  - OF_CRLF which indicates that CRLF translation is used.
  - OF_TextWithCRLF = OF_Text | OF_CRLF indicates that the file is text and uses CRLF translation.

Developers should now use either the OF_Text or OF_TextWithCRLF for text files and OF_None for binary files. If the developer doesn't want carriage returns on Windows, they should use OF_Text, if they do want carriage returns on Windows, they should use OF_TextWithCRLF.

So this is the behaviour per platform with my patch:

z/OS:
OF_None: open in binary mode
OF_Text : open in text mode
OF_TextWithCRLF: open in text mode

Windows:
OF_None: open file with no carriage return
OF_Text: open file with no carriage return
OF_TextWithCRLF: open file with carriage return

The Major change is in llvm/lib/Support/Windows/Path.inc to only set text mode if the OF_CRLF is set.
```
  if (Flags & OF_CRLF)
    CrtOpenFlags |= _O_TEXT;
```

These following files are the ones that still use OF_Text which I left unchanged. I modified all these except raw_ostream.cpp in recent patches so I know these were previously in Binary mode on Windows.
./llvm/lib/Support/raw_ostream.cpp
./llvm/lib/TableGen/Main.cpp
./llvm/tools/dsymutil/DwarfLinkerForBinary.cpp
./llvm/unittests/Support/Path.cpp
./clang/lib/StaticAnalyzer/Core/HTMLDiagnostics.cpp
./clang/lib/Frontend/CompilerInstance.cpp
./clang/lib/Driver/Driver.cpp
./clang/lib/Driver/ToolChains/Clang.cpp

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D99426
2021-04-06 07:23:31 -04:00
..
AnalysisWrappers.cpp [llvm][NFC][CallSite] Removed CallSite from some implementation details. 2020-04-15 22:27:05 -07:00
BreakpointPrinter.cpp
BreakpointPrinter.h
CMakeLists.txt Speculative fix for build breakage from D78403 2020-05-14 23:57:22 -04:00
GraphPrinters.cpp
NewPMDriver.cpp [NewPM] Redesign of PreserveCFG Checker 2021-04-06 12:35:49 +07:00
NewPMDriver.h [opt][NewPM] Add a --print-passes flag to print all available passes 2021-02-10 11:22:12 -08:00
opt.cpp [SystemZ][z/OS][Windows] Add new OF_TextWithCRLF flag and use this flag instead of OF_Text 2021-04-06 07:23:31 -04:00
PassPrinters.cpp [opt] Remove obsolete --quiet option 2020-07-08 13:21:20 -07:00
PassPrinters.h [opt] Remove obsolete --quiet option 2020-07-08 13:21:20 -07:00
PrintSCC.cpp [PrintSCC] Fix printing a basic-block without a name 2020-05-29 20:14:19 +03:00