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comparison llvm/test/TableGen/trydecode-emission.td @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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children c4bab56944e8
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147:c2174574ed3a 150:1d019706d866
1 // RUN: llvm-tblgen -gen-disassembler -I %p/../../include %s | FileCheck %s
2
3 // Check that if decoding of an instruction fails and the instruction does not
4 // have a complete decoder method that can determine if the bitpattern is valid
5 // or not then the decoder tries to find a more general instruction that
6 // matches the bitpattern too.
7
8 include "llvm/Target/Target.td"
9
10 def archInstrInfo : InstrInfo { }
11
12 def arch : Target {
13 let InstructionSet = archInstrInfo;
14 }
15
16 class TestInstruction : Instruction {
17 let Size = 1;
18 let OutOperandList = (outs);
19 let InOperandList = (ins);
20 field bits<8> Inst;
21 field bits<8> SoftFail = 0;
22 }
23
24 def InstA : TestInstruction {
25 let Inst = {0,0,0,0,?,?,?,?};
26 let AsmString = "InstA";
27 }
28
29 def InstB : TestInstruction {
30 let Inst = {0,0,0,0,0,0,?,?};
31 let AsmString = "InstB";
32 let DecoderMethod = "DecodeInstB";
33 let hasCompleteDecoder = 0;
34 }
35
36 // CHECK: /* 0 */ MCD::OPC_ExtractField, 4, 4, // Inst{7-4} ...
37 // CHECK-NEXT: /* 3 */ MCD::OPC_FilterValue, 0, 18, 0, 0, // Skip to: 26
38 // CHECK-NEXT: /* 8 */ MCD::OPC_CheckField, 2, 2, 0, 7, 0, 0, // Skip to: 22
39 // CHECK-NEXT: /* 15 */ MCD::OPC_TryDecode, {{[0-9]+}}, 1, 0, 0, 0, 0, // Opcode: InstB, skip to: 22
40 // CHECK-NEXT: /* 22 */ MCD::OPC_Decode, {{[0-9]+}}, 1, 1, // Opcode: InstA
41 // CHECK-NEXT: /* 26 */ MCD::OPC_Fail,
42
43 // CHECK: if (DecodeInstB(MI, insn, Address, Decoder) == MCDisassembler::Fail) { DecodeComplete = false; return MCDisassembler::Fail; }