59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
//===- ValueMapper.cpp - Unit tests for ValueMapper -----------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Metadata.h"
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#include "llvm/Transforms/Utils/ValueMapper.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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TEST(ValueMapperTest, MapMetadataUnresolved) {
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LLVMContext Context;
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TempMDTuple T = MDTuple::getTemporary(Context, None);
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ValueToValueMapTy VM;
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EXPECT_EQ(T.get(), MapMetadata(T.get(), VM, RF_NoModuleLevelChanges));
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}
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TEST(ValueMapperTest, MapMetadataDistinct) {
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LLVMContext Context;
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auto *D = MDTuple::getDistinct(Context, None);
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{
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// The node should be cloned.
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ValueToValueMapTy VM;
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EXPECT_NE(D, MapMetadata(D, VM, RF_None));
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}
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{
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// The node should be moved.
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ValueToValueMapTy VM;
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EXPECT_EQ(D, MapMetadata(D, VM, RF_MoveDistinctMDs));
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}
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}
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TEST(ValueMapperTest, MapMetadataDistinctOperands) {
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LLVMContext Context;
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Metadata *Old = MDTuple::getDistinct(Context, None);
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auto *D = MDTuple::getDistinct(Context, Old);
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ASSERT_EQ(Old, D->getOperand(0));
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Metadata *New = MDTuple::getDistinct(Context, None);
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ValueToValueMapTy VM;
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VM.MD()[Old].reset(New);
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// Make sure operands are updated.
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EXPECT_EQ(D, MapMetadata(D, VM, RF_MoveDistinctMDs));
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EXPECT_EQ(New, D->getOperand(0));
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}
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}
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