[llvm] [SandboxIR] Boilerplate code (PR #95814)

[Arthur Eubanks via llvm-commits]

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@@ -0,0 +1,43 @@
+//===- SandboxIRTest.cpp --------------------------------------------------===//
+//
+// 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/Transforms/SandboxIR/SandboxIR.h"
+#include "llvm/AsmParser/Parser.h"
+#include "llvm/IR/BasicBlock.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/Instruction.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Support/SourceMgr.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+struct SandboxIRTest : public testing::Test {
+  LLVMContext C;
+  std::unique_ptr<Module> M;
+
+  void parseIR(LLVMContext &C, const char *IR) {
+    SMDiagnostic Err;
+    M = parseAssemblyString(IR, Err, C);
+    if (!M)
+      Err.print("SandboxIRTest", errs());
+  }
+};
+
+TEST_F(SandboxIRTest, UserInstantiation) {
+  parseIR(C, R"IR(
+define void @foo(i32 %v1) {
+  ret void
+}
+)IR");
+  Function &F = *M->getFunction("foo");
+  auto *Ret = F.begin()->getTerminator();
+  sandboxir::Context Ctxt(C);
+  sandboxir::User U(sandboxir::Value::ClassID::User, Ret, Ctxt);
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aeubanks wrote:

`[[maybe_unused]] sandboxir::User U...` instead of `(void) U`

https://github.com/llvm/llvm-project/pull/95814