[MIPS] Add support for direct-to-nacl in Clang

lib/Driver/ToolChains.cpp

 //===--- ToolChains.cpp - ToolChain Implementations -----------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "ToolChains.h"
@@ skipping 2338 matching lines @@
       file_paths.push_back(ToolPath + "x86_64-nacl");
       break;
     }
     case llvm::Triple::arm: {
       file_paths.push_back(FilePath + "arm-nacl/lib");
       file_paths.push_back(FilePath + "arm-nacl/usr/lib");
       prog_paths.push_back(ProgPath + "arm-nacl/bin");
       file_paths.push_back(ToolPath + "arm-nacl");
       break;
     }
+    case llvm::Triple::mipsel: {
+      file_paths.push_back(FilePath + "mipsel-nacl/lib");
+      file_paths.push_back(FilePath + "mipsel-nacl/usr/lib");
+      prog_paths.push_back(ProgPath + "bin");
+      file_paths.push_back(ToolPath + "mipsel-nacl");
+      break;
+    }
     default:
       break;
   }
 
   // Use provided linker, not system linker
   Linker = GetLinkerPath();
   NaClArmMacrosPath = GetFilePath("nacl-arm-macros.s");
 }
 
 void NaCl_TC::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
@@ skipping 69 matching lines @@
     llvm::sys::path::append(P, "arm-nacl/include/c++/v1");
     addSystemInclude(DriverArgs, CC1Args, P.str());
   } else if (getTriple().getArch() == llvm::Triple::x86) {
     SmallString<128> P(D.Dir + "/../");
     llvm::sys::path::append(P, "x86_64-nacl/include/c++/v1");
     addSystemInclude(DriverArgs, CC1Args, P.str());
   } else if (getTriple().getArch() == llvm::Triple::x86_64) {
     SmallString<128> P(D.Dir + "/../");
     llvm::sys::path::append(P, "x86_64-nacl/include/c++/v1");
     addSystemInclude(DriverArgs, CC1Args, P.str());
+  } else if (getTriple().getArch() == llvm::Triple::mipsel) {
+    SmallString<128> P(D.Dir + "/../");
+    llvm::sys::path::append(P, "mipsel-nacl/include/c++/v1");
+    addSystemInclude(DriverArgs, CC1Args, P.str());
   }
 }
 
 ToolChain::CXXStdlibType NaCl_TC::GetCXXStdlibType(const ArgList &Args) const {
   if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
     StringRef Value = A->getValue();
     if (Value == "libc++")
       return ToolChain::CST_Libcxx;
     getDriver().Diag(diag::err_drv_invalid_stdlib_name)
       << A->getAsString(Args);
@@ skipping 1236 matching lines @@
     StringRef(cl_include_dir).split(Dirs, StringRef(EnvPathSeparatorStr));
     ArrayRef<StringRef> DirVec(Dirs);
     addSystemIncludes(DriverArgs, CC1Args, DirVec);
   }
 }
 
 void XCore::AddCXXStdlibLibArgs(const ArgList &Args,
                                 ArgStringList &CmdArgs) const {
   // We don't output any lib args. This is handled by xcc.
 }