//===- 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