tmp

Author: s-barannikov

llvm/include/llvm/MC/MCDecoderOps.h

@@ -13,19 +13,15 @@
 namespace llvm::MCD {
 
 // Disassembler state machine opcodes.
-// nts_t is either uint16_t or uint24_t based on whether large decoder table is
-// enabled.
 enum DecoderOps {
-  OPC_Scope = 1,         // OPC_Scope(nts_t NumToSkip)
-  OPC_ExtractField,      // OPC_ExtractField(uleb128 Start, uint8_t Len)
-  OPC_FilterValueOrSkip, // OPC_FilterValueOrSkip(uleb128 Val, nts_t NumToSkip)
-  OPC_FilterValue,       // OPC_FilterValue(uleb128 Val)
-  OPC_CheckField,        // OPC_CheckField(uleb128 Start, uint8_t Len,
-                         //                uleb128 Val)
-  OPC_CheckPredicate,    // OPC_CheckPredicate(uleb128 PIdx)
-  OPC_Decode,            // OPC_Decode(uleb128 Opcode, uleb128 DIdx)
-  OPC_TryDecode,         // OPC_TryDecode(uleb128 Opcode, uleb128 DIdx)
-  OPC_SoftFail,          // OPC_SoftFail(uleb128 PMask, uleb128 NMask)
+  OPC_Scope = 1,      // OPC_Scope(uleb128 Size)
+  OPC_SwitchField,    // OPC_SwitchField(uleb128 Start, uint8_t Len,
+                      //                 [uleb128 Val, uleb128 Size]...)
+  OPC_CheckField,     // OPC_CheckField(uleb128 Start, uint8_t Len, uleb128 Val)
+  OPC_CheckPredicate, // OPC_CheckPredicate(uleb128 PIdx)
+  OPC_Decode,         // OPC_Decode(uleb128 Opcode, uleb128 DIdx)
+  OPC_TryDecode,      // OPC_TryDecode(uleb128 Opcode, uleb128 DIdx)
+  OPC_SoftFail,       // OPC_SoftFail(uleb128 PMask, uleb128 NMask)
 };
 
 } // namespace llvm::MCD

llvm/utils/TableGen/CMakeLists.txt

@@ -43,6 +43,9 @@ add_tablegen(llvm-tblgen LLVM
   DAGISelMatcherGen.cpp
   DAGISelMatcherOpt.cpp
   DecoderEmitter.cpp
+  DecoderTableEmitter.cpp
+  DecoderTree.cpp
+  DecoderTreeBuilder.cpp
   DFAEmitter.cpp
   DFAPacketizerEmitter.cpp
   DisassemblerEmitter.cpp