derek.holloway
7502bf64a4
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93 lines
2.3 KiB
TableGen
93 lines
2.3 KiB
TableGen
// RUN: llvm-tblgen -gen-emitter -I %p/../../include %s | FileCheck %s --check-prefix=ENCODER
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// RUN: llvm-tblgen -gen-disassembler -I %p/../../include %s | FileCheck %s --check-prefix=DECODER
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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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def HasA : Predicate<"Subtarget->hasA()">;
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def HasB : Predicate<"Subtarget->hasB()">;
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def ModeA : HwMode<[HasA]>;
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def ModeB : HwMode<[HasB]>;
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def fooTypeEncA : InstructionEncoding {
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let Size = 4;
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field bits<32> SoftFail = 0;
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bits<32> Inst;
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bits<8> factor;
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let Inst{7...0} = factor;
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let Inst{3...2} = 0b11;
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let Inst{1...0} = 0b00;
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}
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def fooTypeEncB : InstructionEncoding {
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let Size = 4;
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field bits<32> SoftFail = 0;
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bits<32> Inst;
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bits<8> factor;
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let Inst{15...8} = factor;
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let Inst{1...0} = 0b11;
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}
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let OutOperandList = (outs) in {
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def foo : Instruction {
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let InOperandList = (ins i32imm:$factor);
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let EncodingInfos = EncodingByHwMode<
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[ModeA, ModeB], [fooTypeEncA,
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fooTypeEncB]
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>;
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let AsmString = "foo $factor";
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}
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def bar: Instruction {
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let InOperandList = (ins i32imm:$factor);
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let Size = 4;
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bits<32> Inst;
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bits<32> SoftFail;
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bits<8> factor;
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let Inst{31...24} = factor;
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let Inst{1...0} = 0b10;
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let AsmString = "bar $factor";
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}
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def baz : Instruction {
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let InOperandList = (ins i32imm:$factor);
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bits<32> Inst;
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let EncodingInfos = EncodingByHwMode<
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[ModeB], [fooTypeEncA]
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>;
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let AsmString = "foo $factor";
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}
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}
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// DECODER-LABEL: DecoderTable_ModeA32
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// DECODER-DAG: decode to fooTypeEncA:foo
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// DECODER-DAG: decode to bar
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// DECODER-LABEL: DecoderTable_ModeB32
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// DECODER-DAG: decode to fooTypeEncA:baz
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// DECODER-DAG: decode to bar
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// DECODER-DAG: decode to fooTypeEncB:foo
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// ENCODER-LABEL: static const uint64_t InstBits_ModeA[] = {
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// ENCODER: UINT64_C(2), // bar
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// ENCODER: UINT64_C(12), // foo
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// ENCODER-LABEL: static const uint64_t InstBits_ModeB[] = {
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// ENCODER: UINT64_C(2), // bar
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// ENCODER: UINT64_C(3), // foo
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// ENCODER: case ::foo: {
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// ENCODER: switch (HwMode) {
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// ENCODER: default: llvm_unreachable("Unhandled HwMode");
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// ENCODER: case 1: {
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