LLVM: add support for asmjs arch and Emscripten OS

lib/Support/Triple.cpp

 //===--- Triple.cpp - Target triple helper class --------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/Triple.h"
@@ skipping 28 matching lines @@
   case tce:         return "tce";
   case thumb:       return "thumb";
   case thumbeb:     return "thumbeb";
   case x86:         return "i386";
   case x86_64:      return "x86_64";
   case xcore:       return "xcore";
   case nvptx:       return "nvptx";
   case nvptx64:     return "nvptx64";
   case le32:        return "le32";
   case le64:        return "le64";
+  case asmjs:       return "asmjs"; // @LOCALMOD Emscripten
   case amdil:       return "amdil";
   case amdil64:     return "amdil64";
   case hsail:       return "hsail";
   case hsail64:     return "hsail64";
   case spir:        return "spir";
   case spir64:      return "spir64";
   case kalimba:     return "kalimba";
   }
 
   llvm_unreachable("Invalid ArchType!");
@@ skipping 34 matching lines @@
   case x86_64:      return "x86";
 
   case xcore:       return "xcore";
 
   case nvptx:       return "nvptx";
   case nvptx64:     return "nvptx";
 
   case le32:        return "le32";
   case le64:        return "le64";
 
+  case asmjs:       return "asmjs"; // @LOCALMOD Emscripten
+
   case amdil:
   case amdil64:     return "amdil";
 
   case hsail:
   case hsail64:     return "hsail";
 
   case spir:
   case spir64:      return "spir";
   case kalimba:     return "kalimba";
   }
@@ skipping 31 matching lines @@
   case Linux: return "linux";
   case Lv2: return "lv2";
   case MacOSX: return "macosx";
   case NetBSD: return "netbsd";
   case OpenBSD: return "openbsd";
   case Solaris: return "solaris";
   case Win32: return "windows";
   case Haiku: return "haiku";
   case Minix: return "minix";
   case RTEMS: return "rtems";
+  case Emscripten: return "emscripten"; // @LOCALMOD Emscripten
   case NaCl: return "nacl";
   case CNK: return "cnk";
   case Bitrig: return "bitrig";
   case AIX: return "aix";
   case CUDA: return "cuda";
   case NVCL: return "nvcl";
   }
 
   llvm_unreachable("Invalid OSType");
 }
@@ skipping 41 matching lines @@
     .Case("tce", tce)
     .Case("thumb", thumb)
     .Case("thumbeb", thumbeb)
     .Case("x86", x86)
     .Case("x86-64", x86_64)
     .Case("xcore", xcore)
     .Case("nvptx", nvptx)
     .Case("nvptx64", nvptx64)
     .Case("le32", le32)
     .Case("le64", le64)
+    .Case("asmjs", asmjs) // @LOCALMOD Emscripten
     .Case("amdil", amdil)
     .Case("amdil64", amdil64)
     .Case("hsail", hsail)
     .Case("hsail64", hsail64)
     .Case("spir", spir)
     .Case("spir64", spir64)
     .Case("kalimba", kalimba)
     .Default(UnknownArch);
 }
 
@@ skipping 63 matching lines @@
     .Case("hexagon", Triple::hexagon)
     .Case("s390x", Triple::systemz)
     .Case("sparc", Triple::sparc)
     .Cases("sparcv9", "sparc64", Triple::sparcv9)
     .Case("tce", Triple::tce)
     .Case("xcore", Triple::xcore)
     .Case("nvptx", Triple::nvptx)
     .Case("nvptx64", Triple::nvptx64)
     .Case("le32", Triple::le32)
     .Case("le64", Triple::le64)
+    .Case("asmjs", Triple::asmjs) // @LOCALMOD Emscripten
     .Case("amdil", Triple::amdil)
     .Case("amdil64", Triple::amdil64)
     .Case("hsail", Triple::hsail)
     .Case("hsail64", Triple::hsail64)
     .Case("spir", Triple::spir)
     .Case("spir64", Triple::spir64)
     .StartsWith("kalimba", Triple::kalimba)
     .Default(Triple::UnknownArch);
 }
 
@@ skipping 24 matching lines @@
     .StartsWith("lv2", Triple::Lv2)
     .StartsWith("macosx", Triple::MacOSX)
     .StartsWith("netbsd", Triple::NetBSD)
     .StartsWith("openbsd", Triple::OpenBSD)
     .StartsWith("solaris", Triple::Solaris)
     .StartsWith("win32", Triple::Win32)
     .StartsWith("windows", Triple::Win32)
     .StartsWith("haiku", Triple::Haiku)
     .StartsWith("minix", Triple::Minix)
     .StartsWith("rtems", Triple::RTEMS)
+    .StartsWith("emscripten", Triple::Emscripten) // @LOCALMOD Emscripten
     .StartsWith("nacl", Triple::NaCl)
     .StartsWith("cnk", Triple::CNK)
     .StartsWith("bitrig", Triple::Bitrig)
     .StartsWith("aix", Triple::AIX)
     .StartsWith("cuda", Triple::CUDA)
     .StartsWith("nvcl", Triple::NVCL)
     .Default(Triple::UnknownOS);
 }
 
 static Triple::EnvironmentType parseEnvironment(StringRef EnvironmentName) {
@@ skipping 484 matching lines @@
   case llvm::Triple::UnknownArch:
     return 0;
 
   case llvm::Triple::msp430:
     return 16;
 
   case llvm::Triple::arm:
   case llvm::Triple::armeb:
   case llvm::Triple::hexagon:
   case llvm::Triple::le32:
+  case llvm::Triple::asmjs: // @LOCALMOD Emscripten
   case llvm::Triple::mips:
   case llvm::Triple::mipsel:
   case llvm::Triple::nvptx:
   case llvm::Triple::ppc:
   case llvm::Triple::r600:
   case llvm::Triple::sparc:
   case llvm::Triple::tce:
   case llvm::Triple::thumb:
   case llvm::Triple::thumbeb:
   case llvm::Triple::x86:
@@ skipping 48 matching lines @@
     break;
 
   case Triple::amdil:
   case Triple::hsail:
   case Triple::spir:
   case Triple::arm:
   case Triple::armeb:
   case Triple::hexagon:
   case Triple::kalimba:
   case Triple::le32:
+  case Triple::asmjs: // @LOCALMOD Emscripten
   case Triple::mips:
   case Triple::mipsel:
   case Triple::nvptx:
   case Triple::ppc:
   case Triple::r600:
   case Triple::sparc:
   case Triple::tce:
   case Triple::thumb:
   case Triple::thumbeb:
   case Triple::x86:
@@ skipping 22 matching lines @@
   case Triple::arm:
   case Triple::armeb:
   case Triple::hexagon:
   case Triple::kalimba:
   case Triple::msp430:
   case Triple::r600:
   case Triple::tce:
   case Triple::thumb:
   case Triple::thumbeb:
   case Triple::xcore:
+  case Triple::asmjs: // @LOCALMOD Emscripten
     T.setArch(UnknownArch);
     break;
 
   case Triple::aarch64:
   case Triple::aarch64_be:
   case Triple::le64:
   case Triple::amdil64:
   case Triple::hsail64:
   case Triple::spir64:
   case Triple::mips64:
@@ skipping 103 matching lines @@
   default:
     switch (getEnvironment()) {
     case llvm::Triple::EABIHF:
     case llvm::Triple::GNUEABIHF:
       return "arm1176jzf-s";
     default:
       return "arm7tdmi";
     }
   }
 }