[NVPTX] Add support for selecting CUDA vs OCL mode based on triple

IR for CUDA should use "nvptx[64]-nvidia-cuda", and IR for NV OpenCL should use "nvptx[64]-nvidia-nvcl"

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184579 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index 7c02ffb..3b1bff9 100644
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -104,6 +104,7 @@
   case BGQ: return "bgq";
   case Freescale: return "fsl";
   case IBM: return "ibm";
+  case NVIDIA: return "nvidia";
   }
 
   llvm_unreachable("Invalid VendorType!");
@@ -135,6 +136,8 @@
   case CNK: return "cnk";
   case Bitrig: return "bitrig";
   case AIX: return "aix";
+  case CUDA: return "cuda";
+  case NVCL: return "nvcl";
   }
 
   llvm_unreachable("Invalid OSType");
@@ -260,6 +263,7 @@
     .Case("bgq", Triple::BGQ)
     .Case("fsl", Triple::Freescale)
     .Case("ibm", Triple::IBM)
+    .Case("nvidia", Triple::NVIDIA)
     .Default(Triple::UnknownVendor);
 }
 
@@ -287,6 +291,8 @@
     .StartsWith("cnk", Triple::CNK)
     .StartsWith("bitrig", Triple::Bitrig)
     .StartsWith("aix", Triple::AIX)
+    .StartsWith("cuda", Triple::CUDA)
+    .StartsWith("nvcl", Triple::NVCL)
     .Default(Triple::UnknownOS);
 }