Triple: Add AMDHSA operating system type

This operating system type represents the AMD HSA runtime,
and will be required by the R600 backend in order to generate
correct code for this runtime.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223124 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Support/Triple.cpp

@@ -157,6 +157,7 @@ const char *Triple::getOSTypeName(OSType Kind) {
   case AIX: return "aix";
   case CUDA: return "cuda";
   case NVCL: return "nvcl";
+  case AMDHSA: return "amdhsa";
   }
 
   llvm_unreachable("Invalid OSType");
@@ -345,6 +346,7 @@ static Triple::OSType parseOS(StringRef OSName) {
     .StartsWith("aix", Triple::AIX)
     .StartsWith("cuda", Triple::CUDA)
     .StartsWith("nvcl", Triple::NVCL)
+    .StartsWith("amdhsa", Triple::AMDHSA)
     .Default(Triple::UnknownOS);
 }