[Driver] Cleanup last vestiges of Minix / Contiki support

[brad]

Summary

Cleanup what is left after https://reviews.llvm.org/D158461

[brad]

Oops. I missed pasting the URL when commiting this.

[uabelho]

clang/lib/Lex/InitHeaderSearch.cpp

336

@brad :
I think this was the last use of the AddGnuCPlusPlusIncludePaths method, should we remove it now or is it likely it will be used again?

[brad]

clang/lib/Lex/InitHeaderSearch.cpp

336

@brad :
I think this was the last use of the AddGnuCPlusPlusIncludePaths method, should we remove it now or is it likely it will be used again?

I noticed a function of the same name with the Darwin Driver.

[uabelho]

clang/lib/Lex/InitHeaderSearch.cpp

336

Yeah Darwin defines and uses its own function with that name, but the one in InitHeaderSearch is unused since this patch.

I don't know anything about this, just noticed that gcc warns about it being unused.

clang/docs/tools/clang-formatted-files.txt

 clang/lib/Driver/ToolChains/AIX.h
 clang/lib/Driver/ToolChains/AMDGPUOpenMP.cpp
 clang/lib/Driver/ToolChains/AMDGPUOpenMP.h
 clang/lib/Driver/ToolChains/Ananas.h
 clang/lib/Driver/ToolChains/AVR.cpp
 clang/lib/Driver/ToolChains/AVR.h
 clang/lib/Driver/ToolChains/CloudABI.cpp
 clang/lib/Driver/ToolChains/CommonArgs.h
-clang/lib/Driver/ToolChains/Contiki.cpp
 clang/lib/Driver/ToolChains/CrossWindows.h
 clang/lib/Driver/ToolChains/DragonFly.h
 clang/lib/Driver/ToolChains/FreeBSD.cpp
 clang/lib/Driver/ToolChains/FreeBSD.h
 clang/lib/Driver/ToolChains/HIPAMD.h
 clang/lib/Driver/ToolChains/HIPSPV.cpp
 clang/lib/Driver/ToolChains/HIPSPV.h
 clang/lib/Driver/ToolChains/HIPUtility.cpp
 clang/lib/Driver/ToolChains/HIPUtility.h
 clang/lib/Driver/ToolChains/Hurd.cpp
 clang/lib/Driver/ToolChains/Hurd.h
 clang/lib/Driver/ToolChains/InterfaceStubs.cpp
 clang/lib/Driver/ToolChains/InterfaceStubs.h
-clang/lib/Driver/ToolChains/Minix.h
 clang/lib/Driver/ToolChains/MipsLinux.cpp
 clang/lib/Driver/ToolChains/MSP430.h
 clang/lib/Driver/ToolChains/PPCFreeBSD.cpp
 clang/lib/Driver/ToolChains/PPCFreeBSD.h
 clang/lib/Driver/ToolChains/PPCLinux.h
 clang/lib/Driver/ToolChains/ROCm.h
 clang/lib/Driver/ToolChains/Solaris.cpp
 clang/lib/Driver/ToolChains/Solaris.h

clang/lib/Driver/Driver.cpp

                          : Target.getBigEndianArchVariant();
     if (T.getArch() != llvm::Triple::UnknownArch) {
       Target = std::move(T);
       Args.claimAllArgs(options::OPT_mlittle_endian, options::OPT_mbig_endian);
     }
   }
 
   // Skip further flag support on OSes which don't support '-m32' or '-m64'.
-  if (Target.getArch() == llvm::Triple::tce ||
-      Target.getOS() == llvm::Triple::Minix)
+  if (Target.getArch() == llvm::Triple::tce)
     return Target;
 
   // On AIX, the env OBJECT_MODE may affect the resulting arch variant.
   if (Target.isOSAIX()) {
     if (std::optional<std::string> ObjectModeValue =
             llvm::sys::Process::GetEnv("OBJECT_MODE")) {
       StringRef ObjectMode = *ObjectModeValue;
       llvm::Triple::ArchType AT = llvm::Triple::UnknownArch;

clang/lib/Lex/InitHeaderSearch.cpp

       // g++-4 / Cygwin-1.5
       AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.2");
       break;
     }
     break;
   case llvm::Triple::DragonFly:
     AddPath("/usr/include/c++/5.0", CXXSystem, false);
     break;
-  case llvm::Triple::Minix:
-    AddGnuCPlusPlusIncludePaths("/usr/gnu/include/c++/4.4.3",
-                                "", "", "", triple);
-    break;
   default:
     break;
   }
 }
 
 bool InitHeaderSearch::ShouldAddDefaultIncludePaths(
     const llvm::Triple &triple) {
   switch (triple.getOS()) {

clang/test/Preprocessor/predefined-macros-no-warnings.c

 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-linux
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-linux-android
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-dragonfly
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-netbsd
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-openbsd
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-freebsd
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-fuchsia
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-kfreebsd
-// RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-minix
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-solaris
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-win32-cygnus
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-win32-gnu
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-win32-itanium
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-win32-msvc
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-haiku
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-rtems
 // RUN: %clang_cc1 %s -Eonly -Wsystem-headers -Werror -triple i686-nacl