Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/unittests/ExecutionEngine/Orc/IndirectionUtilsTest.cpp

@@ -0,0 +1,47 @@
+//===- LazyEmittingLayerTest.cpp - Unit tests for the lazy emitting layer -===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ExecutionEngine/Orc/IndirectionUtils.h"
+#include "OrcTestCommon.h"
+#include "llvm/ADT/SmallVector.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+namespace {
+
+TEST(IndirectionUtilsTest, MakeStub) {
+  LLVMContext Context;
+  ModuleBuilder MB(Context, "x86_64-apple-macosx10.10", "");
+  Function *F = MB.createFunctionDecl<void(DummyStruct, DummyStruct)>("");
+  AttributeSet FnAttrs = AttributeSet::get(
+      Context, AttrBuilder().addAttribute(Attribute::NoUnwind));
+  AttributeSet RetAttrs; // None
+  AttributeSet ArgAttrs[2] = {
+      AttributeSet::get(Context,
+                        AttrBuilder().addAttribute(Attribute::StructRet)),
+      AttributeSet::get(Context, AttrBuilder().addAttribute(Attribute::ByVal)),
+  };
+  F->setAttributes(AttributeList::get(Context, FnAttrs, RetAttrs, ArgAttrs));
+
+  auto ImplPtr = orc::createImplPointer(*F->getType(), *MB.getModule(), "", nullptr);
+  orc::makeStub(*F, *ImplPtr);
+
+  auto II = F->getEntryBlock().begin();
+  EXPECT_TRUE(isa<LoadInst>(*II)) << "First instruction of stub should be a load.";
+  auto *Call = dyn_cast<CallInst>(std::next(II));
+  EXPECT_TRUE(Call != nullptr) << "Second instruction of stub should be a call.";
+  EXPECT_TRUE(Call->isTailCall()) << "Indirect call from stub should be tail call.";
+  EXPECT_TRUE(Call->hasStructRetAttr())
+    << "makeStub should propagate sret attr on 1st argument.";
+  EXPECT_TRUE(Call->paramHasAttr(1U, Attribute::ByVal))
+    << "makeStub should propagate byval attr on 2nd argument.";
+}
+
+}