[ARM] Assembler support for the ARMv8.2a dot product instructions

Commit r310480 added the AArch64 ARMv8.2a dot product instructions;
this adds the AArch32 instructions.

Differential Revision: https://reviews.llvm.org/D36575

llvm-svn: 310701

1 files changed, 15 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
index 5ab236b..472df5b 100644
--- a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
+++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
@@ -486,6 +486,13 @@ DecodeStatus ARMDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
     }
   }
 
+  Result =
+      decodeInstruction(DecoderTableCoProc32, MI, Insn, Address, this, STI);
+  if (Result != MCDisassembler::Fail) {
+    Size = 4;
+    return checkDecodedInstruction(MI, Size, Address, OS, CS, Insn, Result);
+  }
+
   Size = 4;
   return MCDisassembler::Fail;
 }
@@ -821,6 +828,14 @@ DecodeStatus ThumbDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
     }
   }
 
+  Result =
+      decodeInstruction(DecoderTableThumb2CoProc32, MI, Insn32, Address, this, STI);
+  if (Result != MCDisassembler::Fail) {
+    Size = 4;
+    Check(Result, AddThumbPredicate(MI));
+    return Result;
+  }
+
   Size = 0;
   return MCDisassembler::Fail;
 }