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//===- OrderedBasicBlockTest.cpp - OrderedBasicBlock unit tests -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/OrderedBasicBlock.h"
#include "llvm/AsmParser/Parser.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/SourceMgr.h"
#include "gtest/gtest.h"
namespace llvm {
namespace {
class OrderedBasicBlockTest : public testing::Test {
protected:
LLVMContext C;
std::unique_ptr<Module> makeLLVMModule() {
const char *ModuleString = R"(define i32 @f(i32 %x) {
%add = add i32 %x, 42
ret i32 %add
})";
SMDiagnostic Err;
auto foo = parseAssemblyString(ModuleString, Err, C);
return foo;
}
};
TEST_F(OrderedBasicBlockTest, Basic) {
auto M = makeLLVMModule();
Function *F = M->getFunction("f");
BasicBlock::iterator I = F->front().begin();
Instruction *Add = &*I++;
Instruction *Ret = &*I++;
OrderedBasicBlock OBB(&F->front());
// Intentionally duplicated to verify cached and uncached are the same.
EXPECT_FALSE(OBB.dominates(Add, Add));
EXPECT_FALSE(OBB.dominates(Add, Add));
EXPECT_TRUE(OBB.dominates(Add, Ret));
EXPECT_TRUE(OBB.dominates(Add, Ret));
EXPECT_FALSE(OBB.dominates(Ret, Add));
EXPECT_FALSE(OBB.dominates(Ret, Add));
EXPECT_FALSE(OBB.dominates(Ret, Ret));
EXPECT_FALSE(OBB.dominates(Ret, Ret));
}
} // end anonymous namespace
} // end namespace llvm
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