65 lines
1.7 KiB
TableGen
65 lines
1.7 KiB
TableGen
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// RUN: llvm-tblgen -gen-disassembler -I %p/../../include %s | FileCheck %s
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include "llvm/Target/Target.td"
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def archInstrInfo : InstrInfo { }
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def arch : Target {
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let InstructionSet = archInstrInfo;
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}
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def Myi32 : Operand<i32> {
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let DecoderMethod = "DecodeMyi32";
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}
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let OutOperandList = (outs), Size = 2 in {
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def foo : Instruction {
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let InOperandList = (ins i32imm:$factor);
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field bits<16> Inst;
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bits<32> factor;
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let Inst{7...0} = 0xAA;
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let Inst{14...8} = factor{6...0}; // no offset
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let AsmString = "foo $factor";
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field bits<16> SoftFail = 0;
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}
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def bar : Instruction {
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let InOperandList = (ins i32imm:$factor);
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field bits<16> Inst;
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bits<32> factor;
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let Inst{7...0} = 0xBB;
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let Inst{15...8} = factor{10...3}; // offset by 3
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let AsmString = "bar $factor";
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field bits<16> SoftFail = 0;
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}
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def biz : Instruction {
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let InOperandList = (ins i32imm:$factor);
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field bits<16> Inst;
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bits<32> factor;
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let Inst{7...0} = 0xCC;
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let Inst{11...8,15...12} = factor{10...3}; // offset by 3, multipart
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let AsmString = "biz $factor";
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field bits<16> SoftFail = 0;
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}
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def baz : Instruction {
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let InOperandList = (ins Myi32:$factor);
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field bits<16> Inst;
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bits<32> factor;
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let Inst{7...0} = 0xDD;
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let Inst{15...8} = factor{11...4}; // offset by 4 + custom decode
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let AsmString = "baz $factor";
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field bits<16> SoftFail = 0;
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}
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}
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// CHECK: tmp = fieldFromInstruction(insn, 8, 7);
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// CHECK: tmp = fieldFromInstruction(insn, 8, 8) << 3;
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// CHECK: tmp |= fieldFromInstruction(insn, 8, 4) << 7;
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// CHECK: tmp |= fieldFromInstruction(insn, 12, 4) << 3;
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// CHECK: tmp = fieldFromInstruction(insn, 8, 8) << 4;
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