44 lines
1.5 KiB
TableGen
44 lines
1.5 KiB
TableGen
|
// RUN: llvm-tblgen -gen-disassembler -I %p/../../include %s | FileCheck %s
|
||
|
|
|
||
|
|
// Check that if decoding of an instruction fails and the instruction does not
|
||
|
|
// have a complete decoder method that can determine if the bitpattern is valid
|
||
|
|
// or not then the decoder tries to find a more general instruction that
|
||
|
|
// matches the bitpattern too.
|
||
|
|
|
||
|
|
include "llvm/Target/Target.td"
|
||
|
|
|
||
|
|
def archInstrInfo : InstrInfo { }
|
||
|
|
|
||
|
|
def arch : Target {
|
||
|
|
let InstructionSet = archInstrInfo;
|
||
|
|
}
|
||
|
|
|
||
|
|
class TestInstruction : Instruction {
|
||
|
|
let Size = 1;
|
||
|
|
let OutOperandList = (outs);
|
||
|
|
let InOperandList = (ins);
|
||
|
|
field bits<8> Inst;
|
||
|
|
field bits<8> SoftFail = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
def InstA : TestInstruction {
|
||
|
|
let Inst = {0,0,0,0,?,?,?,?};
|
||
|
|
let AsmString = "InstA";
|
||
|
|
}
|
||
|
|
|
||
|
|
def InstB : TestInstruction {
|
||
|
|
let Inst = {0,0,0,0,0,0,?,?};
|
||
|
|
let AsmString = "InstB";
|
||
|
|
let DecoderMethod = "DecodeInstB";
|
||
|
|
let hasCompleteDecoder = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// 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: /* 26 */ MCD::OPC_Fail,
|
||
|
|
|
||
|
|
// CHECK: if (DecodeInstB(MI, insn, Address, Decoder) == MCDisassembler::Fail) { DecodeComplete = false; return MCDisassembler::Fail; }
|