ARM assembly parsing of MUL instruction.

Correctly handle 's' bit and predication suffices. Add parsing and encoding
tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135596 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 0cf9a4a..89501dc 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -1977,7 +1977,8 @@
 
   // First, split out any predication code. Ignore mnemonics we know aren't
   // predicated but do have a carry-set and so weren't caught above.
-  if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs") {
+  if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
+      Mnemonic != "muls") {
     unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
       .Case("eq", ARMCC::EQ)
       .Case("ne", ARMCC::NE)