Next round of tail call changes.  Register used in a tail
call must not be callee-saved; following x86, add a new
regclass to represent this.  Also fixes a couple of bugs.
Still disabled by default; Thumb doesn't work yet.

llvm-svn: 106053
diff --git a/llvm/utils/TableGen/EDEmitter.cpp b/llvm/utils/TableGen/EDEmitter.cpp
index 66547cb..7f6436c 100644
--- a/llvm/utils/TableGen/EDEmitter.cpp
+++ b/llvm/utils/TableGen/EDEmitter.cpp
@@ -570,6 +570,7 @@
 static int ARMFlagFromOpName(LiteralConstantEmitter *type,
                              const std::string &name) {
   REG("GPR");
+  REG("tcGPR");
   REG("cc_out");
   REG("s_cc_out");
   REG("tGPR");