2a586a8118
It can never be reached. It could be reached if we emitted an opcode that could fall outside the outermost scope, but emission of all such opcodes is guarded by `!isOutermostScope()`. That also means we never add fixups to the outermost scope, so avoid pushing an entry for it onto the stack.
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<"+a", [HasA]>;
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def ModeB : HwMode<"+b", [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: Opcode: fooTypeEncA:foo
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// DECODER-DAG: Opcode: bar
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// DECODER-LABEL: DecoderTable_ModeB32
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// DECODER-DAG: Opcode: fooTypeEncB:foo
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// DECODER-DAG: Opcode: fooTypeEncA:baz
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// DECODER-DAG: Opcode: bar
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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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