ARM Assembly support for Thumb mov-immediate.

Correctly parse the forms of the Thumb mov-immediate instruction:
  1. 8-bit immediate 0-255.
  2. 12-bit shifted-immediate.

The 16-bit immediate "movw" form is also legal with just a "mov" mnemonic,
but is not yet supported. More parser logic necessary there due to fixups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133966 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/EDEmitter.cpp b/utils/TableGen/EDEmitter.cpp
index daf9617..4c0d385 100644
--- a/utils/TableGen/EDEmitter.cpp
+++ b/utils/TableGen/EDEmitter.cpp
@@ -588,6 +588,7 @@
   IMM("imm0_31");
   IMM("imm0_31_m1");
   IMM("nModImm");
+  IMM("imm0_255");
   IMM("imm0_4095");
   IMM("jt2block_operand");
   IMM("t_imm_s4");