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llvm-project/llvm/unittests/IR/MDBuilderTest.cpp
Joachim Meyer 0170bd5d11
[MDBuilder] mergeCallbackEncodings fails due to inspecting the wrong node (#92466) 
Given the following metadata as, with `!6` as `ExistingCallbacks` and
`!8` as `NewCB`:
```
!6 = !{!7}
!7 = !{i64 0, i1 false}
!8 = !{i64 2, i64 3, i1 false}
```
The merge function should add `!8` to the list of `!6`, i.e. `!6 =
!{!7,!8}`. However, at the moment the check if this is legal, tries to
interpret `!7` as integer instead of it's operand.
2024-05-21 17:31:50 -07:00

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//===- llvm/unittests/MDBuilderTest.cpp - MDBuilder unit tests ------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Operator.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
class MDBuilderTest : public testing::Test {
protected:
LLVMContext Context;
};
TEST_F(MDBuilderTest, createString) {
MDBuilder MDHelper(Context);
MDString *Str0 = MDHelper.createString("");
MDString *Str1 = MDHelper.createString("string");
EXPECT_EQ(Str0->getString(), StringRef(""));
EXPECT_EQ(Str1->getString(), StringRef("string"));
}
TEST_F(MDBuilderTest, createFPMath) {
MDBuilder MDHelper(Context);
MDNode *MD0 = MDHelper.createFPMath(0.0);
MDNode *MD1 = MDHelper.createFPMath(1.0);
EXPECT_EQ(MD0, (MDNode *)nullptr);
EXPECT_NE(MD1, (MDNode *)nullptr);
EXPECT_EQ(MD1->getNumOperands(), 1U);
Metadata *Op = MD1->getOperand(0);
EXPECT_TRUE(mdconst::hasa<ConstantFP>(Op));
ConstantFP *Val = mdconst::extract<ConstantFP>(Op);
EXPECT_TRUE(Val->getType()->isFloatingPointTy());
EXPECT_TRUE(Val->isExactlyValue(1.0));
}
TEST_F(MDBuilderTest, createRangeMetadata) {
MDBuilder MDHelper(Context);
APInt A(8, 1), B(8, 2);
MDNode *R0 = MDHelper.createRange(A, A);
MDNode *R1 = MDHelper.createRange(A, B);
EXPECT_EQ(R0, (MDNode *)nullptr);
EXPECT_NE(R1, (MDNode *)nullptr);
EXPECT_EQ(R1->getNumOperands(), 2U);
EXPECT_TRUE(mdconst::hasa<ConstantInt>(R1->getOperand(0)));
EXPECT_TRUE(mdconst::hasa<ConstantInt>(R1->getOperand(1)));
ConstantInt *C0 = mdconst::extract<ConstantInt>(R1->getOperand(0));
ConstantInt *C1 = mdconst::extract<ConstantInt>(R1->getOperand(1));
EXPECT_EQ(C0->getValue(), A);
EXPECT_EQ(C1->getValue(), B);
}
TEST_F(MDBuilderTest, createAnonymousTBAARoot) {
MDBuilder MDHelper(Context);
MDNode *R0 = MDHelper.createAnonymousTBAARoot();
MDNode *R1 = MDHelper.createAnonymousTBAARoot();
EXPECT_NE(R0, R1);
EXPECT_GE(R0->getNumOperands(), 1U);
EXPECT_GE(R1->getNumOperands(), 1U);
EXPECT_EQ(R0->getOperand(0), R0);
EXPECT_EQ(R1->getOperand(0), R1);
EXPECT_TRUE(R0->getNumOperands() == 1 || R0->getOperand(1) == nullptr);
EXPECT_TRUE(R1->getNumOperands() == 1 || R1->getOperand(1) == nullptr);
}
TEST_F(MDBuilderTest, createTBAARoot) {
MDBuilder MDHelper(Context);
MDNode *R0 = MDHelper.createTBAARoot("Root");
MDNode *R1 = MDHelper.createTBAARoot("Root");
EXPECT_EQ(R0, R1);
EXPECT_GE(R0->getNumOperands(), 1U);
EXPECT_TRUE(isa<MDString>(R0->getOperand(0)));
EXPECT_EQ(cast<MDString>(R0->getOperand(0))->getString(), "Root");
EXPECT_TRUE(R0->getNumOperands() == 1 || R0->getOperand(1) == nullptr);
}
TEST_F(MDBuilderTest, createTBAANode) {
MDBuilder MDHelper(Context);
MDNode *R = MDHelper.createTBAARoot("Root");
MDNode *N0 = MDHelper.createTBAANode("Node", R);
MDNode *N1 = MDHelper.createTBAANode("edoN", R);
MDNode *N2 = MDHelper.createTBAANode("Node", R, true);
MDNode *N3 = MDHelper.createTBAANode("Node", R);
EXPECT_EQ(N0, N3);
EXPECT_NE(N0, N1);
EXPECT_NE(N0, N2);
EXPECT_GE(N0->getNumOperands(), 2U);
EXPECT_GE(N1->getNumOperands(), 2U);
EXPECT_GE(N2->getNumOperands(), 3U);
EXPECT_TRUE(isa<MDString>(N0->getOperand(0)));
EXPECT_TRUE(isa<MDString>(N1->getOperand(0)));
EXPECT_TRUE(isa<MDString>(N2->getOperand(0)));
EXPECT_EQ(cast<MDString>(N0->getOperand(0))->getString(), "Node");
EXPECT_EQ(cast<MDString>(N1->getOperand(0))->getString(), "edoN");
EXPECT_EQ(cast<MDString>(N2->getOperand(0))->getString(), "Node");
EXPECT_EQ(N0->getOperand(1), R);
EXPECT_EQ(N1->getOperand(1), R);
EXPECT_EQ(N2->getOperand(1), R);
EXPECT_TRUE(mdconst::hasa<ConstantInt>(N2->getOperand(2)));
EXPECT_EQ(mdconst::extract<ConstantInt>(N2->getOperand(2))->getZExtValue(),
1U);
}
TEST_F(MDBuilderTest, createPCSections) {
MDBuilder MDHelper(Context);
ConstantInt *C1 = ConstantInt::get(Context, APInt(8, 1));
ConstantInt *C2 = ConstantInt::get(Context, APInt(8, 2));
MDNode *PCS = MDHelper.createPCSections({{"s1", {C1, C2}}, {"s2", {}}});
ASSERT_EQ(PCS->getNumOperands(), 3U);
const auto *S1 = dyn_cast<MDString>(PCS->getOperand(0));
const auto *Aux = dyn_cast<MDNode>(PCS->getOperand(1));
const auto *S2 = dyn_cast<MDString>(PCS->getOperand(2));
ASSERT_NE(S1, nullptr);
ASSERT_NE(Aux, nullptr);
ASSERT_NE(S2, nullptr);
EXPECT_EQ(S1->getString(), "s1");
EXPECT_EQ(S2->getString(), "s2");
ASSERT_EQ(Aux->getNumOperands(), 2U);
ASSERT_TRUE(isa<ConstantAsMetadata>(Aux->getOperand(0)));
ASSERT_TRUE(isa<ConstantAsMetadata>(Aux->getOperand(1)));
EXPECT_EQ(mdconst::extract<ConstantInt>(Aux->getOperand(0))->getValue(),
C1->getValue());
EXPECT_EQ(mdconst::extract<ConstantInt>(Aux->getOperand(1))->getValue(),
C2->getValue());
}
TEST_F(MDBuilderTest, createCallbackAndMerge) {
MDBuilder MDHelper(Context);
auto *CB1 = MDHelper.createCallbackEncoding(0, {1, -1}, false);
auto *CB2 = MDHelper.createCallbackEncoding(2, {-1}, false);
ASSERT_EQ(CB1->getNumOperands(), 4U);
ASSERT_TRUE(isa<ConstantAsMetadata>(CB1->getOperand(0)));
ASSERT_TRUE(isa<ConstantAsMetadata>(CB1->getOperand(1)));
ASSERT_TRUE(isa<ConstantAsMetadata>(CB1->getOperand(2)));
ASSERT_TRUE(isa<ConstantAsMetadata>(CB1->getOperand(3)));
EXPECT_EQ(mdconst::extract<ConstantInt>(CB1->getOperand(0))->getValue(), 0);
EXPECT_EQ(mdconst::extract<ConstantInt>(CB1->getOperand(1))->getValue(), 1);
EXPECT_EQ(mdconst::extract<ConstantInt>(CB1->getOperand(2))->getValue(), -1);
EXPECT_EQ(mdconst::extract<ConstantInt>(CB1->getOperand(3))->getValue(),
false);
ASSERT_EQ(CB2->getNumOperands(), 3U);
ASSERT_TRUE(isa<ConstantAsMetadata>(CB2->getOperand(0)));
ASSERT_TRUE(isa<ConstantAsMetadata>(CB2->getOperand(1)));
ASSERT_TRUE(isa<ConstantAsMetadata>(CB2->getOperand(2)));
EXPECT_EQ(mdconst::extract<ConstantInt>(CB2->getOperand(0))->getValue(), 2);
EXPECT_EQ(mdconst::extract<ConstantInt>(CB2->getOperand(1))->getValue(), -1);
EXPECT_EQ(mdconst::extract<ConstantInt>(CB2->getOperand(2))->getValue(),
false);
auto *CBList = MDNode::get(Context, {CB1, CB2});
auto *CB3 = MDHelper.createCallbackEncoding(4, {5}, false);
auto *NewCBList = MDHelper.mergeCallbackEncodings(CBList, CB3);
ASSERT_EQ(NewCBList->getNumOperands(), 3U);
EXPECT_TRUE(NewCBList->getOperand(0) == CB1);
EXPECT_TRUE(NewCBList->getOperand(1) == CB2);
EXPECT_TRUE(NewCBList->getOperand(2) == CB3);
ASSERT_EQ(CB3->getNumOperands(), 3U);
ASSERT_TRUE(isa<ConstantAsMetadata>(CB3->getOperand(0)));
ASSERT_TRUE(isa<ConstantAsMetadata>(CB3->getOperand(1)));
ASSERT_TRUE(isa<ConstantAsMetadata>(CB3->getOperand(2)));
EXPECT_EQ(mdconst::extract<ConstantInt>(CB3->getOperand(0))->getValue(), 4);
EXPECT_EQ(mdconst::extract<ConstantInt>(CB3->getOperand(1))->getValue(), 5);
EXPECT_EQ(mdconst::extract<ConstantInt>(CB3->getOperand(2))->getValue(),
false);
}
} // namespace
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