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[LLVM][MC] Introduce OrFail variants of MCD ops
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8 files changed

+249
-152
lines changed

8 files changed

+249
-152
lines changed

‎llvm/include/llvm/MC/MCDecoderOps.h

Lines changed: 19 additions & 14 deletions
Original file line numberDiff line numberDiff line change
@@ -10,24 +10,29 @@
1010
#ifndef LLVM_MC_MCDECODEROPS_H
1111
#define LLVM_MC_MCDECODEROPS_H
1212

13-
namespace llvm {
13+
namespace llvm::MCD {
1414

15-
namespace MCD {
1615
// Disassembler state machine opcodes.
16+
// nts_t is either uint16_t or uint24_t based on whether large decoder table is
17+
// enabled.
1718
enum DecoderOps {
18-
OPC_ExtractField = 1, // OPC_ExtractField(uleb128 Start, uint8_t Len)
19-
OPC_FilterValue, // OPC_FilterValue(uleb128 Val, uint16_t NumToSkip)
20-
OPC_CheckField, // OPC_CheckField(uleb128 Start, uint8_t Len,
21-
// uleb128 Val, uint16_t NumToSkip)
22-
OPC_CheckPredicate, // OPC_CheckPredicate(uleb128 PIdx, uint16_t NumToSkip)
23-
OPC_Decode, // OPC_Decode(uleb128 Opcode, uleb128 DIdx)
24-
OPC_TryDecode, // OPC_TryDecode(uleb128 Opcode, uleb128 DIdx,
25-
// uint16_t NumToSkip)
26-
OPC_SoftFail, // OPC_SoftFail(uleb128 PMask, uleb128 NMask)
27-
OPC_Fail // OPC_Fail()
19+
OPC_ExtractField = 1, // OPC_ExtractField(uleb128 Start, uint8_t Len)
20+
OPC_FilterValue, // OPC_FilterValue(uleb128 Val, nts_t NumToSkip)
21+
OPC_FilterValueOrFail, // OPC_FilterValueOrFail(uleb128 Val)
22+
OPC_CheckField, // OPC_CheckField(uleb128 Start, uint8_t Len,
23+
// uleb128 Val, nts_t NumToSkip)
24+
OPC_CheckFieldOrFail, // OPC_ChecFieldOrFail(uleb128 Start, uint8_t Len,
25+
// uleb128 Val)
26+
OPC_CheckPredicate, // OPC_CheckPredicate(uleb128 PIdx, nts_t NumToSkip)
27+
OPC_CheckPredicateOrFail, // OPC_CheckPredicateOrFail(uleb128 PIdx)
28+
OPC_Decode, // OPC_Decode(uleb128 Opcode, uleb128 DIdx)
29+
OPC_TryDecode, // OPC_TryDecode(uleb128 Opcode, uleb128 DIdx,
30+
// nts_t NumToSkip)
31+
OPC_TryDecodeOrFail, // OPC_TryDecodeOrFail(uleb128 Opcode, uleb128 DIdx)
32+
OPC_SoftFail, // OPC_SoftFail(uleb128 PMask, uleb128 NMask)
33+
OPC_Fail // OPC_Fail()
2834
};
2935

30-
} // namespace MCD
31-
} // namespace llvm
36+
} // namespace llvm::MCD
3237

3338
#endif

‎llvm/lib/Target/AArch64/CMakeLists.txt

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@ tablegen(LLVM AArch64GenAsmWriter1.inc -gen-asm-writer -asmwriternum=1)
88
tablegen(LLVM AArch64GenCallingConv.inc -gen-callingconv)
99
tablegen(LLVM AArch64GenDAGISel.inc -gen-dag-isel)
1010
tablegen(LLVM AArch64GenDisassemblerTables.inc -gen-disassembler
11-
--large-decoder-table)
11+
)
1212
tablegen(LLVM AArch64GenFastISel.inc -gen-fast-isel)
1313
tablegen(LLVM AArch64GenGlobalISel.inc -gen-global-isel)
1414
tablegen(LLVM AArch64GenO0PreLegalizeGICombiner.inc -gen-global-isel-combiner

‎llvm/test/TableGen/VarLenDecoder.td

Lines changed: 11 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -47,19 +47,19 @@ def FOO32 : MyVarInst<MemOp32> {
4747
);
4848
}
4949

50-
// CHECK-SMALL: MCD::OPC_ExtractField, 3, 5, // Inst{7-3} ...
51-
// CHECK-SMALL-NEXT: MCD::OPC_FilterValue, 8, 4, 0, // Skip to: 11
52-
// CHECK-SMALL-NEXT: MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 0, // Opcode: FOO16
53-
// CHECK-SMALL-NEXT: MCD::OPC_FilterValue, 9, 4, 0, // Skip to: 19
54-
// CHECK-SMALL-NEXT: MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: FOO32
55-
// CHECK-SMALL-NEXT: MCD::OPC_Fail,
50+
// CHECK-SMALL: /* 0 */ MCD::OPC_ExtractField, 3, 5, // Inst{7-3} ...
51+
// CHECK-SMALL-NEXT: /* 3 */ MCD::OPC_FilterValue, 8, 4, 0, // Skip to: 11
52+
// CHECK-SMALL-NEXT: /* 7 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 0, // Opcode: FOO16
53+
// CHECK-SMALL-NEXT: /* 11 */ MCD::OPC_FilterValueOrFail, 9,
54+
// CHECK-SMALL-NEXT: /* 13 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: FOO32
55+
// CHECK-SMALL-NEXT: /* 17 */ MCD::OPC_Fail,
5656

5757
// CHECK-LARGE: /* 0 */ MCD::OPC_ExtractField, 3, 5, // Inst{7-3} ...
5858
// CHECK-LARGE-NEXT: /* 3 */ MCD::OPC_FilterValue, 8, 4, 0, 0, // Skip to: 12
5959
// CHECK-LARGE-NEXT: /* 8 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 0, // Opcode: FOO16
60-
// CHECK-LARGE-NEXT: /* 12 */ MCD::OPC_FilterValue, 9, 4, 0, 0, // Skip to: 21
61-
// CHECK-LARGE-NEXT: /* 17 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: FOO32
62-
// CHECK-LARGE-NEXT: /* 21 */ MCD::OPC_Fail,
60+
// CHECK-LARGE-NEXT: /* 12 */ MCD::OPC_FilterValueOrFail, 9,
61+
// CHECK-LARGE-NEXT: /* 14 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: FOO32
62+
// CHECK-LARGE-NEXT: /* 18 */ MCD::OPC_Fail,
6363

6464
// Instruction length table
6565
// CHECK: 27,
@@ -88,7 +88,8 @@ def FOO32 : MyVarInst<MemOp32> {
8888
// CHECK-LABEL: case MCD::OPC_ExtractField: {
8989
// CHECK: makeUp(insn, Start + Len);
9090

91-
// CHECK-LABEL: case MCD::OPC_CheckField: {
91+
// CHECK-LABEL: case MCD::OPC_CheckField:
92+
// CHECK-NEXT: case MCD::OPC_CheckFieldOrFail: {
9293
// CHECK: makeUp(insn, Start + Len);
9394

9495
// CHECK-LABEL: case MCD::OPC_Decode: {

‎llvm/test/TableGen/trydecode-emission.td

Lines changed: 10 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -35,11 +35,11 @@ def InstB : TestInstruction {
3535
}
3636

3737
// CHECK: /* 0 */ MCD::OPC_ExtractField, 4, 4, // Inst{7-4} ...
38-
// CHECK-NEXT: /* 3 */ MCD::OPC_FilterValue, 0, 16, 0, // Skip to: 23
39-
// CHECK-NEXT: /* 7 */ MCD::OPC_CheckField, 2, 2, 0, 6, 0, // Skip to: 19
40-
// CHECK-NEXT: /* 13 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, // Opcode: InstB, skip to: 19
41-
// CHECK-NEXT: /* 19 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
42-
// CHECK-NEXT: /* 23 */ MCD::OPC_Fail,
38+
// CHECK-NEXT: /* 3 */ MCD::OPC_FilterValueOrFail, 0,
39+
// CHECK-NEXT: /* 5 */ MCD::OPC_CheckField, 2, 2, 0, 6, 0, // Skip to: 17
40+
// CHECK-NEXT: /* 11 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, // Opcode: InstB, Skip to: 17
41+
// CHECK-NEXT: /* 17 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
42+
// CHECK-NEXT: /* 21 */ MCD::OPC_Fail,
4343

4444
// CHECK: if (!Check(S, DecodeInstB(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }
4545

@@ -48,11 +48,11 @@ def InstB : TestInstruction {
4848
// CHECK-NEXT: return NumToSkip;
4949

5050
// CHECK-LARGE: /* 0 */ MCD::OPC_ExtractField, 4, 4, // Inst{7-4} ...
51-
// CHECK-LARGE-NEXT: /* 3 */ MCD::OPC_FilterValue, 0, 18, 0, 0, // Skip to: 26
52-
// CHECK-LARGE-NEXT: /* 8 */ MCD::OPC_CheckField, 2, 2, 0, 7, 0, 0, // Skip to: 22
53-
// CHECK-LARGE-NEXT: /* 15 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, skip to: 22
54-
// CHECK-LARGE-NEXT: /* 22 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
55-
// CHECK-LARGE-NEXT: /* 26 */ MCD::OPC_Fail,
51+
// CHECK-LARGE-NEXT: /* 3 */ MCD::OPC_FilterValueOrFail, 0,
52+
// CHECK-LARGE-NEXT: /* 5 */ MCD::OPC_CheckField, 2, 2, 0, 7, 0, 0, // Skip to: 19
53+
// CHECK-LARGE-NEXT: /* 12 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, Skip to: 19
54+
// CHECK-LARGE-NEXT: /* 19 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
55+
// CHECK-LARGE-NEXT: /* 23 */ MCD::OPC_Fail,
5656

5757
// CHECK-LARGE: if (!Check(S, DecodeInstB(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }
5858

‎llvm/test/TableGen/trydecode-emission2.td

Lines changed: 16 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -32,27 +32,27 @@ def InstB : TestInstruction {
3232
}
3333

3434
// CHECK: /* 0 */ MCD::OPC_ExtractField, 2, 1, // Inst{2} ...
35-
// CHECK-NEXT: /* 3 */ MCD::OPC_FilterValue, 0, 31, 0, // Skip to: 38
36-
// CHECK-NEXT: /* 7 */ MCD::OPC_ExtractField, 5, 3, // Inst{7-5} ...
37-
// CHECK-NEXT: /* 10 */ MCD::OPC_FilterValue, 0, 24, 0, // Skip to: 38
38-
// CHECK-NEXT: /* 14 */ MCD::OPC_CheckField, 0, 2, 3, 6, 0, // Skip to: 26
39-
// CHECK-NEXT: /* 20 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, // Opcode: InstB, skip to: 26
40-
// CHECK-NEXT: /* 26 */ MCD::OPC_CheckField, 3, 2, 0, 6, 0, // Skip to: 38
41-
// CHECK-NEXT: /* 32 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 1, 0, 0, // Opcode: InstA, skip to: 38
42-
// CHECK-NEXT: /* 38 */ MCD::OPC_Fail,
35+
// CHECK-NEXT: /* 3 */ MCD::OPC_FilterValueOrFail, 0,
36+
// CHECK-NEXT: /* 5 */ MCD::OPC_ExtractField, 5, 3, // Inst{7-5} ...
37+
// CHECK-NEXT: /* 8 */ MCD::OPC_FilterValueOrFail, 0
38+
// CHECK-NEXT: /* 10 */ MCD::OPC_CheckField, 0, 2, 3, 6, 0, // Skip to: 22
39+
// CHECK-NEXT: /* 16 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, // Opcode: InstB, Skip to: 22
40+
// CHECK-NEXT: /* 22 */ MCD::OPC_CheckFieldOrFail, 3, 2, 0,
41+
// CHECK-NEXT: /* 26 */ MCD::OPC_TryDecodeOrFail, {{[0-9]+}}, {{[0-9]+}}, 1,
42+
// CHECK-NEXT: /* 30 */ MCD::OPC_Fail,
4343

4444
// CHECK: if (!Check(S, DecodeInstB(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }
4545
// CHECK: if (!Check(S, DecodeInstA(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }
4646

4747
// CHECK-LARGE: /* 0 */ MCD::OPC_ExtractField, 2, 1, // Inst{2} ...
48-
// CHECK-LARGE-NEXT: /* 3 */ MCD::OPC_FilterValue, 0, 36, 0, 0, // Skip to: 44
49-
// CHECK-LARGE-NEXT: /* 8 */ MCD::OPC_ExtractField, 5, 3, // Inst{7-5} ...
50-
// CHECK-LARGE-NEXT: /* 11 */ MCD::OPC_FilterValue, 0, 28, 0, 0, // Skip to: 44
51-
// CHECK-LARGE-NEXT: /* 16 */ MCD::OPC_CheckField, 0, 2, 3, 7, 0, 0, // Skip to: 30
52-
// CHECK-LARGE-NEXT: /* 23 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, skip to: 30
53-
// CHECK-LARGE-NEXT: /* 30 */ MCD::OPC_CheckField, 3, 2, 0, 7, 0, 0, // Skip to: 44
54-
// CHECK-LARGE-NEXT: /* 37 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 1, 0, 0, 0, // Opcode: InstA, skip to: 44
55-
// CHECK-LARGE-NEXT: /* 44 */ MCD::OPC_Fail,
48+
// CHECK-LARGE-NEXT: /* 3 */ MCD::OPC_FilterValueOrFail, 0,
49+
// CHECK-LARGE-NEXT: /* 5 */ MCD::OPC_ExtractField, 5, 3, // Inst{7-5} ...
50+
// CHECK-LARGE-NEXT: /* 8 */ MCD::OPC_FilterValueOrFail, 0,
51+
// CHECK-LARGE-NEXT: /* 10 */ MCD::OPC_CheckField, 0, 2, 3, 7, 0, 0, // Skip to: 24
52+
// CHECK-LARGE-NEXT: /* 17 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, Skip to: 24
53+
// CHECK-LARGE-NEXT: /* 24 */ MCD::OPC_CheckFieldOrFail, 3, 2, 0,
54+
// CHECK-LARGE-NEXT: /* 28 */ MCD::OPC_TryDecodeOrFail, {{[0-9]+}}, {{[0-9]+}}, 1,
55+
// CHECK-LARGE-NEXT: /* 32 */ MCD::OPC_Fail,
5656

5757
// CHECK-LARGE: if (!Check(S, DecodeInstB(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }
5858
// CHECK-LARGE: if (!Check(S, DecodeInstA(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }

‎llvm/test/TableGen/trydecode-emission3.td

Lines changed: 10 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -36,19 +36,19 @@ def InstB : TestInstruction {
3636
}
3737

3838
// CHECK: /* 0 */ MCD::OPC_ExtractField, 4, 4, // Inst{7-4} ...
39-
// CHECK-NEXT: /* 3 */ MCD::OPC_FilterValue, 0, 16, 0, // Skip to: 23
40-
// CHECK-NEXT: /* 7 */ MCD::OPC_CheckField, 2, 2, 0, 6, 0, // Skip to: 19
41-
// CHECK-NEXT: /* 13 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, // Opcode: InstB, skip to: 19
42-
// CHECK-NEXT: /* 19 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
43-
// CHECK-NEXT: /* 23 */ MCD::OPC_Fail,
39+
// CHECK-NEXT: /* 3 */ MCD::OPC_FilterValueOrFail, 0,
40+
// CHECK-NEXT: /* 5 */ MCD::OPC_CheckField, 2, 2, 0, 6, 0, // Skip to: 17
41+
// CHECK-NEXT: /* 11 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, // Opcode: InstB, Skip to: 17
42+
// CHECK-NEXT: /* 17 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
43+
// CHECK-NEXT: /* 21 */ MCD::OPC_Fail,
4444

4545
// CHECK: if (!Check(S, DecodeInstBOp(MI, tmp, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }
4646

4747
// CHECK-LARGE: /* 0 */ MCD::OPC_ExtractField, 4, 4, // Inst{7-4} ...
48-
// CHECK-LARGE-NEXT: /* 3 */ MCD::OPC_FilterValue, 0, 18, 0, 0, // Skip to: 26
49-
// CHECK-LARGE-NEXT: /* 8 */ MCD::OPC_CheckField, 2, 2, 0, 7, 0, 0, // Skip to: 22
50-
// CHECK-LARGE-NEXT: /* 15 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, skip to: 22
51-
// CHECK-LARGE-NEXT: /* 22 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
52-
// CHECK-LARGE-NEXT: /* 26 */ MCD::OPC_Fail,
48+
// CHECK-LARGE-NEXT: /* 3 */ MCD::OPC_FilterValueOrFail, 0,
49+
// CHECK-LARGE-NEXT: /* 5 */ MCD::OPC_CheckField, 2, 2, 0, 7, 0, 0, // Skip to: 19
50+
// CHECK-LARGE-NEXT: /* 12 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, Skip to: 19
51+
// CHECK-LARGE-NEXT: /* 19 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
52+
// CHECK-LARGE-NEXT: /* 23 */ MCD::OPC_Fail,
5353

5454
// CHECK-LARGE: if (!Check(S, DecodeInstBOp(MI, tmp, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }

‎llvm/test/TableGen/trydecode-emission4.td

Lines changed: 10 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -34,21 +34,21 @@ def InstB : TestInstruction {
3434
}
3535

3636
// CHECK: /* 0 */ MCD::OPC_ExtractField, 250, 3, 4, // Inst{509-506} ...
37-
// CHECK-NEXT: /* 4 */ MCD::OPC_FilterValue, 0, 17, 0, // Skip to: 25
38-
// CHECK-NEXT: /* 8 */ MCD::OPC_CheckField, 248, 3, 2, 0, 6, 0, // Skip to: 21
39-
// CHECK-NEXT: /* 15 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, // Opcode: InstB, skip to: 21
40-
// CHECK-NEXT: /* 21 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
41-
// CHECK-NEXT: /* 25 */ MCD::OPC_Fail,
37+
// CHECK-NEXT: /* 4 */ MCD::OPC_FilterValueOrFail, 0,
38+
// CHECK-NEXT: /* 6 */ MCD::OPC_CheckField, 248, 3, 2, 0, 6, 0, // Skip to: 19
39+
// CHECK-NEXT: /* 13 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, // Opcode: InstB, Skip to: 19
40+
// CHECK-NEXT: /* 19 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
41+
// CHECK-NEXT: /* 23 */ MCD::OPC_Fail,
4242

4343
// CHECK: if (!Check(S, DecodeInstB(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }
4444

4545

4646
// CHECK-LARGE: /* 0 */ MCD::OPC_ExtractField, 250, 3, 4, // Inst{509-506} ...
47-
// CHECK-LARGE-NEXT: /* 4 */ MCD::OPC_FilterValue, 0, 19, 0, 0, // Skip to: 28
48-
// CHECK-LARGE-NEXT: /* 9 */ MCD::OPC_CheckField, 248, 3, 2, 0, 7, 0, 0, // Skip to: 24
49-
// CHECK-LARGE-NEXT: /* 17 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, skip to: 24
50-
// CHECK-LARGE-NEXT: /* 24 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
51-
// CHECK-LARGE-NEXT: /* 28 */ MCD::OPC_Fail,
47+
// CHECK-LARGE-NEXT: /* 4 */ MCD::OPC_FilterValueOrFail, 0,
48+
// CHECK-LARGE-NEXT: /* 6 */ MCD::OPC_CheckField, 248, 3, 2, 0, 7, 0, 0, // Skip to: 21
49+
// CHECK-LARGE-NEXT: /* 14 */ MCD::OPC_TryDecode, {{[0-9]+}}, {{[0-9]+}}, 0, 0, 0, 0, // Opcode: InstB, Skip to: 21
50+
// CHECK-LARGE-NEXT: /* 21 */ MCD::OPC_Decode, {{[0-9]+}}, {{[0-9]+}}, 1, // Opcode: InstA
51+
// CHECK-LARGE-NEXT: /* 25 */ MCD::OPC_Fail,
5252

5353
// CHECK-LARGE: if (!Check(S, DecodeInstB(MI, insn, Address, Decoder))) { DecodeComplete = false; return MCDisassembler::Fail; }
5454

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