[NFC][TableGen] Refine the check in Decoder

The Opcode occupy 2 bytes in following test, we should use {{[0-9]+}}
to match the total value if it, not a part of it.
OPC_Decode(uleb128 Opcode, uleb128 DIdx)
and so do for OPC_TryDecode.

llvm/test/TableGen/VarLenDecoder.td

@@ -48,9 +48,9 @@ def FOO32 : MyVarInst<MemOp32> {
 
 // CHECK:      MCD::OPC_ExtractField, 3, 5,  // Inst{7-3} ...
 // CHECK-NEXT: MCD::OPC_FilterValue, 8, 4, 0, 0, // Skip to: 12
-// CHECK-NEXT: MCD::OPC_Decode, [[#OPCODE:]], 1, 0, // Opcode: FOO16
+// CHECK-NEXT: MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 0, // Opcode: FOO16
 // CHECK-NEXT: MCD::OPC_FilterValue, 9, 4, 0, 0, // Skip to: 21
-// CHECK-NEXT: MCD::OPC_Decode, [[#OPCODE+1]], 1, 1, // Opcode: FOO32
+// CHECK-NEXT: MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: FOO32
 // CHECK-NEXT: MCD::OPC_Fail,
 
 // Instruction length table

llvm/test/TableGen/trydecode-emission.td

@@ -36,8 +36,8 @@ def InstB : TestInstruction {
 // CHECK:      /* 0 */       MCD::OPC_ExtractField, 4, 4,  // Inst{7-4} ...
 // CHECK-NEXT: /* 3 */       MCD::OPC_FilterValue, 0, 18, 0, 0, // Skip to: 26
 // CHECK-NEXT: /* 8 */       MCD::OPC_CheckField, 2, 2, 0, 7, 0, 0, // Skip to: 22
-// CHECK-NEXT: /* 15 */      MCD::OPC_TryDecode, {{[0-9]+}}, 1, 0, 0, 0, 0, // Opcode: InstB, skip to: 22
-// CHECK-NEXT: /* 22 */      MCD::OPC_Decode, {{[0-9]+}}, 1, 1, // Opcode: InstA
+// CHECK-NEXT: /* 15 */      MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, skip to: 22
+// CHECK-NEXT: /* 22 */      MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
 // CHECK-NEXT: /* 26 */      MCD::OPC_Fail,
 
 // CHECK: if (!Check(S, DecodeInstB(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }

llvm/test/TableGen/trydecode-emission2.td

@@ -35,9 +35,9 @@ def InstB : TestInstruction {
 // CHECK-NEXT: /* 8 */       MCD::OPC_ExtractField, 5, 3,  // Inst{7-5} ...
 // CHECK-NEXT: /* 11 */      MCD::OPC_FilterValue, 0, 28, 0, 0, // Skip to: 44
 // CHECK-NEXT: /* 16 */      MCD::OPC_CheckField, 0, 2, 3, 7, 0, 0, // Skip to: 30
-// CHECK-NEXT: /* 23 */      MCD::OPC_TryDecode, {{[0-9]+}}, 1, 0, 0, 0, 0, // Opcode: InstB, skip to: 30
+// CHECK-NEXT: /* 23 */      MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, skip to: 30
 // CHECK-NEXT: /* 30 */      MCD::OPC_CheckField, 3, 2, 0, 7, 0, 0, // Skip to: 44
-// CHECK-NEXT: /* 37 */      MCD::OPC_TryDecode, {{[0-9]+}}, 1, 1, 0, 0, 0, // Opcode: InstA, skip to: 44
+// CHECK-NEXT: /* 37 */      MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 1, 0, 0, 0, // Opcode: InstA, skip to: 44
 // CHECK-NEXT: /* 44 */      MCD::OPC_Fail,
 
 // CHECK: if (!Check(S, DecodeInstB(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }

llvm/test/TableGen/trydecode-emission3.td

@@ -37,8 +37,8 @@ def InstB : TestInstruction {
 // CHECK:      /* 0 */       MCD::OPC_ExtractField, 4, 4,  // Inst{7-4} ...
 // CHECK-NEXT: /* 3 */       MCD::OPC_FilterValue, 0, 18, 0, 0, // Skip to: 26
 // CHECK-NEXT: /* 8 */       MCD::OPC_CheckField, 2, 2, 0, 7, 0, 0, // Skip to: 22
-// CHECK-NEXT: /* 15 */      MCD::OPC_TryDecode, {{[0-9]+}}, 1, 0, 0, 0, 0, // Opcode: InstB, skip to: 22
-// CHECK-NEXT: /* 22 */      MCD::OPC_Decode, {{[0-9]+}}, 1, 1, // Opcode: InstA
+// CHECK-NEXT: /* 15 */      MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, skip to: 22
+// CHECK-NEXT: /* 22 */      MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
 // CHECK-NEXT: /* 26 */      MCD::OPC_Fail,
 
 // CHECK: if (!Check(S, DecodeInstBOp(MI, tmp, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }