da1d3d8fb9
1. Remove 'AllModes' and 'DefaultMode' suffixes for DecoderTables under default HwMode. 2. Introduce a less aggressive suppression for HwMode DecoderTable, only reduce necessary tables duplications. This allows encodings under different HwModes to retain the original DecoderNamespace. 3. Change 'suppress-per-hwmode-duplicates' command option from bool type to enum type, allowing users to choose what level of suppression to use.
119 lines
3.4 KiB
TableGen
119 lines
3.4 KiB
TableGen
// RUN: llvm-tblgen -gen-disassembler -I %p/../../include %s | \
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// RUN: FileCheck %s --check-prefix=DECODER
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// RUN: llvm-tblgen -gen-disassembler --suppress-per-hwmode-duplicates=O2 -I \
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// RUN: %p/../../include %s | FileCheck %s --check-prefix=DECODER-SUPPRESS
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// Test duplicate table suppression for per-HwMode decoders.
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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, fooTypeEncB]
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>;
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let AsmString = "foo $factor";
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}
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// Encoding not overridden, same namespace:
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// In the default case, this instruction is duplicated into both ModeA and
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// ModeB decoder tables.
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// In the suppressed case, this instruction appears in a single decoder table.
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def bar: Instruction {
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let InOperandList = (ins i32imm:$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 $factor";
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}
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// Encoding not overridden, different namespace:
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// In the default case, this instruction is duplicated into two Alt decoder
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// tables (ModeA and ModeB).
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// In the suppressed case, this instruction appears in a single decoder table.
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def unrelated: Instruction {
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let DecoderNamespace = "Alt";
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let InOperandList = (ins i32imm:$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 = "unrelated $factor";
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}
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}
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// DECODER-LABEL: DecoderTableAlt_ModeA32[] =
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// DECODER-DAG: Opcode: unrelated
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// DECODER-LABEL: DecoderTableAlt_ModeB32[] =
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// DECODER-DAG: Opcode: unrelated
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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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// DECODER-SUPPRESS-LABEL: DecoderTable32[] =
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// DECODER-SUPPRESS-DAG: Opcode: bar
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// DECODER-SUPPRESS-LABEL: DecoderTableAlt32[] =
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// DECODER-SUPPRESS-DAG: Opcode: unrelated
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// DECODER-SUPPRESS-LABEL: DecoderTable_ModeA32[] =
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// DECODER-SUPPRESS-DAG: Opcode: fooTypeEncA:foo
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// DECODER-SUPPRESS-NOT: Opcode: bar
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// DECODER-SUPPRESS-LABEL: DecoderTable_ModeB32[] =
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// DECODER-SUPPRESS-DAG: Opcode: fooTypeEncB:foo
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// DECODER-SUPPRESS-DAG: Opcode: fooTypeEncA:baz
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// DECODER-SUPPRESS-NOT: Opcode: bar
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