yet more aliases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114822 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/AsmParser/X86AsmParser.cpp

@@ -634,6 +634,9 @@ ParseInstruction(StringRef Name, SMLoc NameLoc,
     .Case("repnz", "repne")
     .Case("iret", "iretl")
     .Case("sysret", "sysretl")
+    .Case("cbw",  "cbtw")
+    .Case("cwd",  "cwtd")
+    .Case("cdq", "cltd")
     .Case("cwde", "cwtl")
     .Case("cdqe", "cltq")
     .Case("smovb", "movsb")

test/MC/AsmParser/X86/x86_instructions.s

@@ -403,3 +403,7 @@ cdqe  // CHECK: cltq
 cwde  // CHECK: cwtl
 cwtl  // CHECK: cwtl
 
+// rdar://8416805
+cbw   // CHECK: cbtw
+cwd   // CHECK: cwtd
+cdq   // CHECK: cltd