[VM arm assembler] Do not use addressing mode 2 with instructions ldrh, ldrsh,

runtime/vm/assembler_arm.cc

Index: runtime/vm/assembler_arm.cc
diff --git a/runtime/vm/assembler_arm.cc b/runtime/vm/assembler_arm.cc
index 74eb9a680e343bf5da9c53d0cd45bad7f6eea2b4..ff2ecfa9db2a62549f411961aa62ac2958227fa0 100644
--- a/runtime/vm/assembler_arm.cc
+++ b/runtime/vm/assembler_arm.cc
@@ -3316,7 +3316,8 @@ Address Assembler::ElementAddressForRegIndex(bool is_load,
   ASSERT(array != IP);
   ASSERT(index != IP);
   const Register base = is_load ? IP : index;
-  if ((offset != 0) || (size == kSWord) || (size == kDWord) ||
+  if ((offset != 0) || (is_load && (size == kByte)) || (size == kHalfword) ||
+      (size == kUnsignedHalfword) || (size == kSWord) || (size == kDWord) ||
       (size == kRegList)) {
     if (shift < 0) {
       ASSERT(shift == -1);