Exhaustively test all triples in TripleTest.

Iteration over all permutations didn't really work,
due to evolution of the underlying enums.

Differential Revision: http://reviews.llvm.org/D9057

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236251 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ADT/Triple.h

@@ -82,7 +82,8 @@ public:
     hsail64,    // AMD HSAIL with 64-bit pointers
     spir,       // SPIR: standard portable IR for OpenCL 32-bit version
     spir64,     // SPIR: standard portable IR for OpenCL 64-bit version
-    kalimba     // Kalimba: generic kalimba
+    kalimba,    // Kalimba: generic kalimba
+    LastArchType = kalimba
   };
   enum SubArchType {
     NoSubArch,
@@ -118,7 +119,8 @@ public:
     ImaginationTechnologies,
     MipsTechnologies,
     NVIDIA,
-    CSR
+    CSR,
+    LastVendorType = CSR
   };
   enum OSType {
     UnknownOS,
@@ -146,7 +148,8 @@ public:
     CUDA,       // NVIDIA CUDA
     NVCL,       // NVIDIA OpenCL
     AMDHSA,     // AMD HSA Runtime
-    PS4
+    PS4,
+    LastOSType = PS4
   };
   enum EnvironmentType {
     UnknownEnvironment,
@@ -163,6 +166,7 @@ public:
     MSVC,
     Itanium,
     Cygnus,
+    LastEnvironmentType = Cygnus
   };
   enum ObjectFormatType {
     UnknownObjectFormat,