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[Orc] Make the makeStub function propagate argument attributes onto the call to

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the function body.

This is necessary for correctness when lazily compiling.

Also, flesh out the Orc unit test infrastructure slightly, and add a unit test
for this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235347 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2015-04-20 20:41:45 +00:00
parent 878f959d7f
commit 302f000bf4
5 changed files with 140 additions and 0 deletions
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48
unittests/ExecutionEngine/Orc/IndirectionUtilsTest.cpp Normal file
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@@ -0,0 +1,48 @@
//===- 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 "OrcTestCommon.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ExecutionEngine/Orc/IndirectionUtils.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(IndirectionUtilsTest, MakeStub) {
ModuleBuilder MB(getGlobalContext(), "x86_64-apple-macosx10.10", "");
Function *F = MB.createFunctionDecl<void(DummyStruct, DummyStruct)>(MB.getModule(), "");
SmallVector<AttributeSet, 4> Attrs;
Attrs.push_back(
AttributeSet::get(MB.getModule()->getContext(), 1U,
AttrBuilder().addAttribute(Attribute::StructRet)));
Attrs.push_back(
AttributeSet::get(MB.getModule()->getContext(), 2U,
AttrBuilder().addAttribute(Attribute::ByVal)));
Attrs.push_back(
AttributeSet::get(MB.getModule()->getContext(), ~0U,
AttrBuilder().addAttribute(Attribute::NoUnwind)));
F->setAttributes(AttributeSet::get(MB.getModule()->getContext(), Attrs));
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(2U, Attribute::ByVal))
<< "makeStub should propagate byval attr on 2nd argument.";
}
}