ARM target now also recognize triplets like thumbv6-apple-darwin and set thumb mode and arch subversion. Eventually thumb triplets will go way and replaced with function notes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66435 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMTargetMachine.cpp b/lib/Target/ARM/ARMTargetMachine.cpp
index 919c2ff..6bb0b2e 100644
--- a/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/lib/Target/ARM/ARMTargetMachine.cpp
@@ -53,7 +53,9 @@
 
 unsigned ThumbTargetMachine::getModuleMatchQuality(const Module &M) {
   std::string TT = M.getTargetTriple();
-  if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "thumb-")
+  // Match thumb-foo-bar, as well as things like thumbv5blah-*
+  if (TT.size() >= 6 &&
+      (TT.substr(0, 6) == "thumb-" || TT.substr(0, 6) == "thumbv"))
     return 20;
 
   // If the target triple is something non-thumb, we don't match.
@@ -105,7 +107,8 @@
 
 unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) {
   std::string TT = M.getTargetTriple();
-  if (TT.size() >= 4 && // Match arm-foo-bar, as well as things like armv5blah-*
+  // Match arm-foo-bar, as well as things like armv5blah-*
+  if (TT.size() >= 4 &&
       (TT.substr(0, 4) == "arm-" || TT.substr(0, 4) == "armv"))
     return 20;
   // If the target triple is something non-arm, we don't match.