Optimize Thumb2 jumptable to use tbb / tbh when all the offsets fit in byte / halfword.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77422 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/Thumb2InstrInfo.cpp b/lib/Target/ARM/Thumb2InstrInfo.cpp
index b3e5d7e..9a757b0 100644
--- a/lib/Target/ARM/Thumb2InstrInfo.cpp
+++ b/lib/Target/ARM/Thumb2InstrInfo.cpp
@@ -40,6 +40,8 @@
   case ARM::t2LDM_RET:
   case ARM::t2B:        // Uncond branch.
   case ARM::t2BR_JT:    // Jumptable branch.
+  case ARM::t2TBB:      // Table branch byte.
+  case ARM::t2TBH:      // Table branch halfword.
   case ARM::tBR_JTr:    // Jumptable branch (16-bit version).
   case ARM::tBX_RET:
   case ARM::tBX_RET_vararg: