[llvm] [TableGen] Suppress per-HwMode duplicate instructions/tables. (PR #82567)

[Wang Pengcheng via llvm-commits]

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@@ -0,0 +1,121 @@
+// RUN: llvm-tblgen -gen-disassembler -I %p/../../include %s | \
+// RUN:     FileCheck %s --check-prefix=DECODER
+// RUN: llvm-tblgen -gen-disassembler --suppress-per-hwmode-duplicates -I \
+// RUN:     %p/../../include %s | FileCheck %s --check-prefix=DECODER-SUPPRESS
+
+// Test duplicate table suppression for per-HwMode decoders.
+
+include "llvm/Target/Target.td"
+
+def archInstrInfo : InstrInfo { }
+
+def arch : Target {
+    let InstructionSet = archInstrInfo;
+}
+
+def  Myi32  : Operand<i32> {
+  let DecoderMethod = "DecodeMyi32";
+}
+
+def HasA : Predicate<"Subtarget->hasA()">;
+def HasB : Predicate<"Subtarget->hasB()">;
+
+def ModeA : HwMode<"+a", [HasA]>;
+def ModeB : HwMode<"+b", [HasB]>;
+
+
+def fooTypeEncA : InstructionEncoding {
+  let Size = 4;
+  field bits<32> SoftFail = 0;
+  bits<32> Inst;
+  bits<8> factor;
+  let Inst{7...0} = factor;
+  let Inst{3...2} = 0b11;
+  let Inst{1...0} = 0b00;
+}
+
+def fooTypeEncB : InstructionEncoding {
+  let Size = 4;
+  field bits<32> SoftFail = 0;
+  bits<32> Inst;
+  bits<8> factor;
+  let Inst{15...8} = factor;
+  let Inst{1...0} = 0b11;
+}
+
+let OutOperandList = (outs) in {
+def foo : Instruction {
+  let InOperandList = (ins i32imm:$factor);
+  let EncodingInfos = EncodingByHwMode<
+    [ModeA, ModeB], [fooTypeEncA,
+                      fooTypeEncB]
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wangpc-pp wrote:

Indent this part.

https://github.com/llvm/llvm-project/pull/82567