Patches to build EFI with Clang/LLVM. By Carl Norum.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124639 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 8de20a3..f216279 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -33,7 +33,10 @@
   case Triple::MinGW64:
   case Triple::Cygwin:
   case Triple::Win32:
-    return new X86MCAsmInfoCOFF(TheTriple);
+    if (TheTriple.getEnvironment() == Triple::MachO)
+      return new X86MCAsmInfoDarwin(TheTriple);
+    else
+      return new X86MCAsmInfoCOFF(TheTriple);
   default:
     return new X86ELFMCAsmInfo(TheTriple);
   }
@@ -53,7 +56,10 @@
   case Triple::MinGW64:
   case Triple::Cygwin:
   case Triple::Win32:
-    return createWinCOFFStreamer(Ctx, TAB, *_Emitter, _OS, RelaxAll);
+    if (TheTriple.getEnvironment() == Triple::MachO)
+      return createMachOStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
+    else
+      return createWinCOFFStreamer(Ctx, TAB, *_Emitter, _OS, RelaxAll);
   default:
     return createELFStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll, NoExecStack);
   }