[llvm] [llvm][SystemZ] Set comment stream in SystemZDisassembler::getInstruction (PR #148614)

[David Spickett via llvm-commits]

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@@ -0,0 +1,103 @@
+//===- SystemZMCDisassemblerTest.cpp - Tests for SystemZ MCDisassembler ---===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCDisassembler/MCDisassembler.h"
+#include "llvm/MC/MCDisassembler/MCSymbolizer.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/MC/MCTargetOptions.h"
+#include "llvm/MC/TargetRegistry.h"
+#include "llvm/Support/TargetSelect.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+namespace {
+
+struct Context {
+  const char *TripleName = "systemz-unknown";
+  std::unique_ptr<MCRegisterInfo> MRI;
+  std::unique_ptr<MCAsmInfo> MAI;
+  std::unique_ptr<MCContext> Ctx;
+  std::unique_ptr<MCSubtargetInfo> STI;
+  std::unique_ptr<MCDisassembler> DisAsm;
+
+  Context() {
+    LLVMInitializeSystemZTargetInfo();
+    LLVMInitializeSystemZTargetMC();
+    LLVMInitializeSystemZDisassembler();
+
+    // If we didn't build SystemZ, do not run the test.
+    std::string Error;
+    const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
+    if (!TheTarget)
+      return;
+
+    MRI.reset(TheTarget->createMCRegInfo(TripleName));
+    MAI.reset(TheTarget->createMCAsmInfo(*MRI, TripleName, MCTargetOptions()));
+    STI.reset(TheTarget->createMCSubtargetInfo(TripleName, "", ""));
+    Ctx = std::make_unique<MCContext>(Triple(TripleName), MAI.get(), MRI.get(),
+                                      STI.get());
+
+    DisAsm.reset(TheTarget->createMCDisassembler(*STI, *Ctx));
+  }
+
+  operator MCContext &() { return *Ctx; };
+};
+
+Context &getContext() {
+  static Context Ctxt;
+  return Ctxt;
+}
+
+class SystemZMCSymbolizerTest : public MCSymbolizer {
+public:
+  SystemZMCSymbolizerTest(MCContext &MC) : MCSymbolizer(MC, nullptr) {}
+  ~SystemZMCSymbolizerTest() {}
+
+  bool tryAddingSymbolicOperand([[maybe_unused]] MCInst &Inst,
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DavidSpickett wrote:

I could have left these parameters anonymous which saves some noise, but means the next person to extend this will have to go look up all the names again.

https://github.com/llvm/llvm-project/pull/148614