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//===- unittests/Interpreter/InterpreterExtensionsTest.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
//
//===----------------------------------------------------------------------===//
//
// Unit tests for Clang's Interpreter library.
//
//===----------------------------------------------------------------------===//
#include "InterpreterTestFixture.h"
#include "clang/Interpreter/Interpreter.h"
#include "clang/AST/Expr.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Sema/Lookup.h"
#include "clang/Sema/Sema.h"
#include "llvm/ExecutionEngine/Orc/LLJIT.h"
#include "llvm/ExecutionEngine/Orc/Shared/ExecutorAddress.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Support/Threading.h"
#include "llvm/Testing/Support/Error.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <system_error>
#if defined(_AIX) || defined(__MVS__)
#define CLANG_INTERPRETER_PLATFORM_CANNOT_CREATE_LLJIT
#endif
using namespace clang;
namespace {
class InterpreterExtensionsTest : public InterpreterTestBase {
protected:
void SetUp() override {
#ifdef CLANG_INTERPRETER_PLATFORM_CANNOT_CREATE_LLJIT
GTEST_SKIP();
#endif
}
static void SetUpTestSuite() {
llvm::InitializeAllTargets();
llvm::InitializeAllTargetInfos();
llvm::InitializeAllTargetMCs();
llvm::InitializeAllAsmPrinters();
}
public:
// Some tests require a arm-registered-target
static bool IsARMTargetRegistered() {
llvm::Triple TT;
TT.setArch(llvm::Triple::arm);
TT.setVendor(llvm::Triple::UnknownVendor);
TT.setOS(llvm::Triple::UnknownOS);
std::string UnusedErr;
return llvm::TargetRegistry::lookupTarget(TT.str(), UnusedErr);
}
};
class RecordRuntimeIBMetrics : public Interpreter {
struct NoopRuntimeInterfaceBuilder : public RuntimeInterfaceBuilder {
NoopRuntimeInterfaceBuilder(Sema &S) : S(S) {}
TransformExprFunction *getPrintValueTransformer() override {
TransformerQueries += 1;
return &noop;
}
static ExprResult noop(RuntimeInterfaceBuilder *Builder, Expr *E,
ArrayRef<Expr *> FixedArgs) {
auto *B = static_cast<NoopRuntimeInterfaceBuilder *>(Builder);
B->TransformedExprs += 1;
return B->S.ActOnFinishFullExpr(E, /*DiscardedValue=*/false);
}
Sema &S;
size_t TransformedExprs = 0;
size_t TransformerQueries = 0;
};
public:
// Inherit with using wouldn't make it public
RecordRuntimeIBMetrics(std::unique_ptr<CompilerInstance> CI, llvm::Error &Err)
: Interpreter(std::move(CI), Err) {}
std::unique_ptr<RuntimeInterfaceBuilder> FindRuntimeInterface() override {
assert(RuntimeIBPtr == nullptr && "We create the builder only once");
Sema &S = getCompilerInstance()->getSema();
auto RuntimeIB = std::make_unique<NoopRuntimeInterfaceBuilder>(S);
RuntimeIBPtr = RuntimeIB.get();
return RuntimeIB;
}
NoopRuntimeInterfaceBuilder *RuntimeIBPtr = nullptr;
};
TEST_F(InterpreterExtensionsTest, FindRuntimeInterface) {
if (!HostSupportsJIT())
GTEST_SKIP();
clang::IncrementalCompilerBuilder CB;
llvm::Error ErrOut = llvm::Error::success();
RecordRuntimeIBMetrics Interp(cantFail(CB.CreateCpp()), ErrOut);
cantFail(std::move(ErrOut));
cantFail(Interp.Parse("int a = 1; a"));
cantFail(Interp.Parse("int b = 2; b"));
cantFail(Interp.Parse("int c = 3; c"));
EXPECT_EQ(3U, Interp.RuntimeIBPtr->TransformedExprs);
EXPECT_EQ(1U, Interp.RuntimeIBPtr->TransformerQueries);
}
class CustomJBInterpreter : public Interpreter {
using CustomJITBuilderCreatorFunction =
std::function<llvm::Expected<std::unique_ptr<llvm::orc::LLJITBuilder>>()>;
CustomJITBuilderCreatorFunction JBCreator = nullptr;
public:
CustomJBInterpreter(std::unique_ptr<CompilerInstance> CI, llvm::Error &ErrOut,
std::unique_ptr<llvm::orc::LLJITBuilder> JB)
: Interpreter(std::move(CI), ErrOut, std::move(JB)) {}
~CustomJBInterpreter() override {
// Skip cleanUp() because it would trigger LLJIT default dtors
Interpreter::ResetExecutor();
}
llvm::Error CreateExecutor() { return Interpreter::CreateExecutor(); }
};
TEST_F(InterpreterExtensionsTest, DefaultCrossJIT) {
if (!IsARMTargetRegistered())
GTEST_SKIP();
IncrementalCompilerBuilder CB;
CB.SetTargetTriple("armv6-none-eabi");
auto CI = cantFail(CB.CreateCpp());
llvm::Error ErrOut = llvm::Error::success();
CustomJBInterpreter Interp(std::move(CI), ErrOut, nullptr);
cantFail(std::move(ErrOut));
}
TEST_F(InterpreterExtensionsTest, CustomCrossJIT) {
if (!IsARMTargetRegistered())
GTEST_SKIP();
std::string TargetTriple = "armv6-none-eabi";
IncrementalCompilerBuilder CB;
CB.SetTargetTriple(TargetTriple);
auto CI = cantFail(CB.CreateCpp());
using namespace llvm::orc;
LLJIT *JIT = nullptr;
std::vector<std::unique_ptr<llvm::MemoryBuffer>> Objs;
auto JTMB = JITTargetMachineBuilder(llvm::Triple(TargetTriple));
JTMB.setCPU("cortex-m0plus");
auto JB = std::make_unique<LLJITBuilder>();
JB->setJITTargetMachineBuilder(JTMB);
JB->setPlatformSetUp(setUpInactivePlatform);
JB->setNotifyCreatedCallback([&](LLJIT &J) {
ObjectLayer &ObjLayer = J.getObjLinkingLayer();
auto *JITLinkObjLayer = llvm::dyn_cast<ObjectLinkingLayer>(&ObjLayer);
JITLinkObjLayer->setReturnObjectBuffer(
[&Objs](std::unique_ptr<llvm::MemoryBuffer> MB) {
Objs.push_back(std::move(MB));
});
JIT = &J;
return llvm::Error::success();
});
llvm::Error ErrOut = llvm::Error::success();
CustomJBInterpreter Interp(std::move(CI), ErrOut, std::move(JB));
cantFail(std::move(ErrOut));
EXPECT_EQ(0U, Objs.size());
cantFail(Interp.ParseAndExecute("int a = 1;"));
ASSERT_NE(JIT, nullptr); // But it is, because JBCreator was never called
ExecutorAddr Addr = cantFail(JIT->lookup("a"));
EXPECT_NE(0U, Addr.getValue());
EXPECT_EQ(1U, Objs.size());
}
} // end anonymous namespace
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