1f9d42aeda
Part of `dbg.addr` removal Discussed in https://discourse.llvm.org/t/what-is-the-status-of-dbg-addr/62898 Differential Revision: https://reviews.llvm.org/D144801
544 lines
16 KiB
C++
544 lines
16 KiB
C++
//===- llvm/unittest/IR/BasicBlockTest.cpp - BasicBlock 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/BasicBlock.h"
|
|
#include "llvm/ADT/STLExtras.h"
|
|
#include "llvm/AsmParser/Parser.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/IRBuilder.h"
|
|
#include "llvm/IR/Instructions.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/IR/NoFolder.h"
|
|
#include "llvm/IR/Verifier.h"
|
|
#include "llvm/Support/SourceMgr.h"
|
|
#include "gmock/gmock-matchers.h"
|
|
#include "gtest/gtest.h"
|
|
#include <memory>
|
|
|
|
namespace llvm {
|
|
namespace {
|
|
|
|
TEST(BasicBlockTest, PhiRange) {
|
|
LLVMContext Context;
|
|
|
|
// Create the main block.
|
|
std::unique_ptr<BasicBlock> BB(BasicBlock::Create(Context));
|
|
|
|
// Create some predecessors of it.
|
|
std::unique_ptr<BasicBlock> BB1(BasicBlock::Create(Context));
|
|
BranchInst::Create(BB.get(), BB1.get());
|
|
std::unique_ptr<BasicBlock> BB2(BasicBlock::Create(Context));
|
|
BranchInst::Create(BB.get(), BB2.get());
|
|
|
|
// Make sure this doesn't crash if there are no phis.
|
|
int PhiCount = 0;
|
|
for (auto &PN : BB->phis()) {
|
|
(void)PN;
|
|
PhiCount++;
|
|
}
|
|
ASSERT_EQ(PhiCount, 0) << "empty block should have no phis";
|
|
|
|
// Make it a cycle.
|
|
auto *BI = BranchInst::Create(BB.get(), BB.get());
|
|
|
|
// Now insert some PHI nodes.
|
|
auto *Int32Ty = Type::getInt32Ty(Context);
|
|
auto *P1 = PHINode::Create(Int32Ty, /*NumReservedValues*/ 3, "phi.1", BI);
|
|
auto *P2 = PHINode::Create(Int32Ty, /*NumReservedValues*/ 3, "phi.2", BI);
|
|
auto *P3 = PHINode::Create(Int32Ty, /*NumReservedValues*/ 3, "phi.3", BI);
|
|
|
|
// Some non-PHI nodes.
|
|
auto *Sum = BinaryOperator::CreateAdd(P1, P2, "sum", BI);
|
|
|
|
// Now wire up the incoming values that are interesting.
|
|
P1->addIncoming(P2, BB.get());
|
|
P2->addIncoming(P1, BB.get());
|
|
P3->addIncoming(Sum, BB.get());
|
|
|
|
// Finally, let's iterate them, which is the thing we're trying to test.
|
|
// We'll use this to wire up the rest of the incoming values.
|
|
for (auto &PN : BB->phis()) {
|
|
PN.addIncoming(UndefValue::get(Int32Ty), BB1.get());
|
|
PN.addIncoming(UndefValue::get(Int32Ty), BB2.get());
|
|
}
|
|
|
|
// Test that we can use const iterators and generally that the iterators
|
|
// behave like iterators.
|
|
BasicBlock::const_phi_iterator CI;
|
|
CI = BB->phis().begin();
|
|
EXPECT_NE(CI, BB->phis().end());
|
|
|
|
// Test that filtering iterators work with basic blocks.
|
|
auto isPhi = [](Instruction &I) { return isa<PHINode>(&I); };
|
|
auto Phis = make_filter_range(*BB, isPhi);
|
|
auto ReversedPhis = reverse(make_filter_range(*BB, isPhi));
|
|
EXPECT_EQ(std::distance(Phis.begin(), Phis.end()), 3);
|
|
EXPECT_EQ(&*Phis.begin(), P1);
|
|
EXPECT_EQ(std::distance(ReversedPhis.begin(), ReversedPhis.end()), 3);
|
|
EXPECT_EQ(&*ReversedPhis.begin(), P3);
|
|
|
|
// And iterate a const range.
|
|
for (const auto &PN : const_cast<const BasicBlock *>(BB.get())->phis()) {
|
|
EXPECT_EQ(BB.get(), PN.getIncomingBlock(0));
|
|
EXPECT_EQ(BB1.get(), PN.getIncomingBlock(1));
|
|
EXPECT_EQ(BB2.get(), PN.getIncomingBlock(2));
|
|
}
|
|
}
|
|
|
|
#define CHECK_ITERATORS(Range1, Range2) \
|
|
EXPECT_EQ(std::distance(Range1.begin(), Range1.end()), \
|
|
std::distance(Range2.begin(), Range2.end())); \
|
|
for (auto Pair : zip(Range1, Range2)) \
|
|
EXPECT_EQ(&std::get<0>(Pair), std::get<1>(Pair));
|
|
|
|
TEST(BasicBlockTest, TestInstructionsWithoutDebug) {
|
|
LLVMContext Ctx;
|
|
|
|
Module *M = new Module("MyModule", Ctx);
|
|
Type *ArgTy1[] = {Type::getInt32PtrTy(Ctx)};
|
|
FunctionType *FT = FunctionType::get(Type::getVoidTy(Ctx), ArgTy1, false);
|
|
Argument *V = new Argument(Type::getInt32Ty(Ctx));
|
|
Function *F = Function::Create(FT, Function::ExternalLinkage, "", M);
|
|
|
|
Function *DbgDeclare = Intrinsic::getDeclaration(M, Intrinsic::dbg_declare);
|
|
Function *DbgValue = Intrinsic::getDeclaration(M, Intrinsic::dbg_value);
|
|
Value *DIV = MetadataAsValue::get(Ctx, (Metadata *)nullptr);
|
|
SmallVector<Value *, 3> Args = {DIV, DIV, DIV};
|
|
|
|
BasicBlock *BB1 = BasicBlock::Create(Ctx, "", F);
|
|
const BasicBlock *BBConst = BB1;
|
|
IRBuilder<> Builder1(BB1);
|
|
|
|
AllocaInst *Var = Builder1.CreateAlloca(Builder1.getInt8Ty());
|
|
Builder1.CreateCall(DbgValue, Args);
|
|
Instruction *AddInst = cast<Instruction>(Builder1.CreateAdd(V, V));
|
|
Instruction *MulInst = cast<Instruction>(Builder1.CreateMul(AddInst, V));
|
|
Builder1.CreateCall(DbgDeclare, Args);
|
|
Instruction *SubInst = cast<Instruction>(Builder1.CreateSub(MulInst, V));
|
|
|
|
SmallVector<Instruction *, 4> Exp = {Var, AddInst, MulInst, SubInst};
|
|
CHECK_ITERATORS(BB1->instructionsWithoutDebug(), Exp);
|
|
CHECK_ITERATORS(BBConst->instructionsWithoutDebug(), Exp);
|
|
|
|
EXPECT_EQ(static_cast<size_t>(BB1->sizeWithoutDebug()), Exp.size());
|
|
EXPECT_EQ(static_cast<size_t>(BBConst->sizeWithoutDebug()), Exp.size());
|
|
|
|
delete M;
|
|
delete V;
|
|
}
|
|
|
|
TEST(BasicBlockTest, ComesBefore) {
|
|
const char *ModuleString = R"(define i32 @f(i32 %x) {
|
|
%add = add i32 %x, 42
|
|
ret i32 %add
|
|
})";
|
|
LLVMContext Ctx;
|
|
SMDiagnostic Err;
|
|
auto M = parseAssemblyString(ModuleString, Err, Ctx);
|
|
ASSERT_TRUE(M.get());
|
|
|
|
Function *F = M->getFunction("f");
|
|
BasicBlock &BB = F->front();
|
|
BasicBlock::iterator I = BB.begin();
|
|
Instruction *Add = &*I++;
|
|
Instruction *Ret = &*I++;
|
|
|
|
// Intentionally duplicated to verify cached and uncached are the same.
|
|
EXPECT_FALSE(BB.isInstrOrderValid());
|
|
EXPECT_FALSE(Add->comesBefore(Add));
|
|
EXPECT_TRUE(BB.isInstrOrderValid());
|
|
EXPECT_FALSE(Add->comesBefore(Add));
|
|
BB.invalidateOrders();
|
|
EXPECT_FALSE(BB.isInstrOrderValid());
|
|
EXPECT_TRUE(Add->comesBefore(Ret));
|
|
EXPECT_TRUE(BB.isInstrOrderValid());
|
|
EXPECT_TRUE(Add->comesBefore(Ret));
|
|
BB.invalidateOrders();
|
|
EXPECT_FALSE(Ret->comesBefore(Add));
|
|
EXPECT_FALSE(Ret->comesBefore(Add));
|
|
BB.invalidateOrders();
|
|
EXPECT_FALSE(Ret->comesBefore(Ret));
|
|
EXPECT_FALSE(Ret->comesBefore(Ret));
|
|
}
|
|
|
|
class InstrOrderInvalidationTest : public ::testing::Test {
|
|
protected:
|
|
void SetUp() override {
|
|
M.reset(new Module("MyModule", Ctx));
|
|
Nop = Intrinsic::getDeclaration(M.get(), Intrinsic::donothing);
|
|
FunctionType *FT = FunctionType::get(Type::getVoidTy(Ctx), {}, false);
|
|
Function *F = Function::Create(FT, Function::ExternalLinkage, "foo", *M);
|
|
BB = BasicBlock::Create(Ctx, "entry", F);
|
|
|
|
IRBuilder<> Builder(BB);
|
|
I1 = Builder.CreateCall(Nop);
|
|
I2 = Builder.CreateCall(Nop);
|
|
I3 = Builder.CreateCall(Nop);
|
|
Ret = Builder.CreateRetVoid();
|
|
}
|
|
|
|
LLVMContext Ctx;
|
|
std::unique_ptr<Module> M;
|
|
Function *Nop = nullptr;
|
|
BasicBlock *BB = nullptr;
|
|
Instruction *I1 = nullptr;
|
|
Instruction *I2 = nullptr;
|
|
Instruction *I3 = nullptr;
|
|
Instruction *Ret = nullptr;
|
|
};
|
|
|
|
TEST_F(InstrOrderInvalidationTest, InsertInvalidation) {
|
|
EXPECT_FALSE(BB->isInstrOrderValid());
|
|
EXPECT_TRUE(I1->comesBefore(I2));
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
EXPECT_TRUE(I2->comesBefore(I3));
|
|
EXPECT_TRUE(I3->comesBefore(Ret));
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
|
|
// Invalidate orders.
|
|
IRBuilder<> Builder(BB, I2->getIterator());
|
|
Instruction *I1a = Builder.CreateCall(Nop);
|
|
EXPECT_FALSE(BB->isInstrOrderValid());
|
|
EXPECT_TRUE(I1->comesBefore(I1a));
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
EXPECT_TRUE(I1a->comesBefore(I2));
|
|
EXPECT_TRUE(I2->comesBefore(I3));
|
|
EXPECT_TRUE(I3->comesBefore(Ret));
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
}
|
|
|
|
TEST_F(InstrOrderInvalidationTest, SpliceInvalidation) {
|
|
EXPECT_TRUE(I1->comesBefore(I2));
|
|
EXPECT_TRUE(I2->comesBefore(I3));
|
|
EXPECT_TRUE(I3->comesBefore(Ret));
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
|
|
// Use Instruction::moveBefore, which uses splice.
|
|
I2->moveBefore(I1);
|
|
EXPECT_FALSE(BB->isInstrOrderValid());
|
|
|
|
EXPECT_TRUE(I2->comesBefore(I1));
|
|
EXPECT_TRUE(I1->comesBefore(I3));
|
|
EXPECT_TRUE(I3->comesBefore(Ret));
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
}
|
|
|
|
TEST_F(InstrOrderInvalidationTest, RemoveNoInvalidation) {
|
|
// Cache the instruction order.
|
|
EXPECT_FALSE(BB->isInstrOrderValid());
|
|
EXPECT_TRUE(I1->comesBefore(I2));
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
|
|
// Removing does not invalidate instruction order.
|
|
I2->removeFromParent();
|
|
I2->deleteValue();
|
|
I2 = nullptr;
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
EXPECT_TRUE(I1->comesBefore(I3));
|
|
EXPECT_EQ(std::next(I1->getIterator()), I3->getIterator());
|
|
}
|
|
|
|
TEST_F(InstrOrderInvalidationTest, EraseNoInvalidation) {
|
|
// Cache the instruction order.
|
|
EXPECT_FALSE(BB->isInstrOrderValid());
|
|
EXPECT_TRUE(I1->comesBefore(I2));
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
|
|
// Removing does not invalidate instruction order.
|
|
I2->eraseFromParent();
|
|
I2 = nullptr;
|
|
EXPECT_TRUE(BB->isInstrOrderValid());
|
|
EXPECT_TRUE(I1->comesBefore(I3));
|
|
EXPECT_EQ(std::next(I1->getIterator()), I3->getIterator());
|
|
}
|
|
|
|
static std::unique_ptr<Module> parseIR(LLVMContext &C, const char *IR) {
|
|
SMDiagnostic Err;
|
|
std::unique_ptr<Module> Mod = parseAssemblyString(IR, Err, C);
|
|
if (!Mod)
|
|
Err.print(__FILE__, errs());
|
|
return Mod;
|
|
}
|
|
|
|
TEST(BasicBlockTest, SpliceFromBB) {
|
|
LLVMContext Ctx;
|
|
std::unique_ptr<Module> M = parseIR(Ctx, R"(
|
|
define void @f(i32 %a) {
|
|
from:
|
|
%fromInstr1 = add i32 %a, %a
|
|
%fromInstr2 = sub i32 %a, %a
|
|
br label %to
|
|
|
|
to:
|
|
%toInstr1 = mul i32 %a, %a
|
|
%toInstr2 = sdiv i32 %a, %a
|
|
ret void
|
|
}
|
|
)");
|
|
Function *F = &*M->begin();
|
|
auto BBIt = F->begin();
|
|
BasicBlock *FromBB = &*BBIt++;
|
|
BasicBlock *ToBB = &*BBIt++;
|
|
|
|
auto FromBBIt = FromBB->begin();
|
|
Instruction *FromI1 = &*FromBBIt++;
|
|
Instruction *FromI2 = &*FromBBIt++;
|
|
Instruction *FromBr = &*FromBBIt++;
|
|
|
|
auto ToBBIt = ToBB->begin();
|
|
Instruction *ToI1 = &*ToBBIt++;
|
|
Instruction *ToI2 = &*ToBBIt++;
|
|
Instruction *ToRet = &*ToBBIt++;
|
|
ToBB->splice(ToI1->getIterator(), FromBB);
|
|
|
|
EXPECT_TRUE(FromBB->empty());
|
|
|
|
auto It = ToBB->begin();
|
|
EXPECT_EQ(&*It++, FromI1);
|
|
EXPECT_EQ(&*It++, FromI2);
|
|
EXPECT_EQ(&*It++, FromBr);
|
|
EXPECT_EQ(&*It++, ToI1);
|
|
EXPECT_EQ(&*It++, ToI2);
|
|
EXPECT_EQ(&*It++, ToRet);
|
|
}
|
|
|
|
TEST(BasicBlockTest, SpliceOneInstr) {
|
|
LLVMContext Ctx;
|
|
std::unique_ptr<Module> M = parseIR(Ctx, R"(
|
|
define void @f(i32 %a) {
|
|
from:
|
|
%fromInstr1 = add i32 %a, %a
|
|
%fromInstr2 = sub i32 %a, %a
|
|
br label %to
|
|
|
|
to:
|
|
%toInstr1 = mul i32 %a, %a
|
|
%toInstr2 = sdiv i32 %a, %a
|
|
ret void
|
|
}
|
|
)");
|
|
Function *F = &*M->begin();
|
|
auto BBIt = F->begin();
|
|
BasicBlock *FromBB = &*BBIt++;
|
|
BasicBlock *ToBB = &*BBIt++;
|
|
|
|
auto FromBBIt = FromBB->begin();
|
|
Instruction *FromI1 = &*FromBBIt++;
|
|
Instruction *FromI2 = &*FromBBIt++;
|
|
Instruction *FromBr = &*FromBBIt++;
|
|
|
|
auto ToBBIt = ToBB->begin();
|
|
Instruction *ToI1 = &*ToBBIt++;
|
|
Instruction *ToI2 = &*ToBBIt++;
|
|
Instruction *ToRet = &*ToBBIt++;
|
|
ToBB->splice(ToI1->getIterator(), FromBB, FromI2->getIterator());
|
|
|
|
EXPECT_EQ(FromBB->size(), 2u);
|
|
EXPECT_EQ(ToBB->size(), 4u);
|
|
|
|
auto It = FromBB->begin();
|
|
EXPECT_EQ(&*It++, FromI1);
|
|
EXPECT_EQ(&*It++, FromBr);
|
|
|
|
It = ToBB->begin();
|
|
EXPECT_EQ(&*It++, FromI2);
|
|
EXPECT_EQ(&*It++, ToI1);
|
|
EXPECT_EQ(&*It++, ToI2);
|
|
EXPECT_EQ(&*It++, ToRet);
|
|
}
|
|
|
|
TEST(BasicBlockTest, SpliceOneInstrWhenFromIsSameAsTo) {
|
|
LLVMContext Ctx;
|
|
std::unique_ptr<Module> M = parseIR(Ctx, R"(
|
|
define void @f(i32 %a) {
|
|
bb:
|
|
%instr1 = add i32 %a, %a
|
|
%instr2 = sub i32 %a, %a
|
|
ret void
|
|
}
|
|
)");
|
|
Function *F = &*M->begin();
|
|
auto BBIt = F->begin();
|
|
BasicBlock *BB = &*BBIt++;
|
|
|
|
auto It = BB->begin();
|
|
Instruction *Instr1 = &*It++;
|
|
Instruction *Instr2 = &*It++;
|
|
Instruction *Ret = &*It++;
|
|
|
|
// According to ilist's splice() a single-element splice where dst == src
|
|
// should be a noop.
|
|
BB->splice(Instr1->getIterator(), BB, Instr1->getIterator());
|
|
|
|
It = BB->begin();
|
|
EXPECT_EQ(&*It++, Instr1);
|
|
EXPECT_EQ(&*It++, Instr2);
|
|
EXPECT_EQ(&*It++, Ret);
|
|
EXPECT_EQ(BB->size(), 3u);
|
|
}
|
|
|
|
TEST(BasicBlockTest, SpliceLastInstr) {
|
|
LLVMContext Ctx;
|
|
std::unique_ptr<Module> M = parseIR(Ctx, R"(
|
|
define void @f(i32 %a) {
|
|
from:
|
|
%fromInstr1 = add i32 %a, %a
|
|
%fromInstr2 = sub i32 %a, %a
|
|
br label %to
|
|
|
|
to:
|
|
%toInstr1 = mul i32 %a, %a
|
|
%toInstr2 = sdiv i32 %a, %a
|
|
ret void
|
|
}
|
|
)");
|
|
Function *F = &*M->begin();
|
|
auto BBIt = F->begin();
|
|
BasicBlock *FromBB = &*BBIt++;
|
|
BasicBlock *ToBB = &*BBIt++;
|
|
|
|
auto FromBBIt = FromBB->begin();
|
|
Instruction *FromI1 = &*FromBBIt++;
|
|
Instruction *FromI2 = &*FromBBIt++;
|
|
Instruction *FromBr = &*FromBBIt++;
|
|
|
|
auto ToBBIt = ToBB->begin();
|
|
Instruction *ToI1 = &*ToBBIt++;
|
|
Instruction *ToI2 = &*ToBBIt++;
|
|
Instruction *ToRet = &*ToBBIt++;
|
|
ToBB->splice(ToI1->getIterator(), FromBB, FromI2->getIterator(),
|
|
FromBr->getIterator());
|
|
|
|
EXPECT_EQ(FromBB->size(), 2u);
|
|
auto It = FromBB->begin();
|
|
EXPECT_EQ(&*It++, FromI1);
|
|
EXPECT_EQ(&*It++, FromBr);
|
|
|
|
EXPECT_EQ(ToBB->size(), 4u);
|
|
It = ToBB->begin();
|
|
EXPECT_EQ(&*It++, FromI2);
|
|
EXPECT_EQ(&*It++, ToI1);
|
|
EXPECT_EQ(&*It++, ToI2);
|
|
EXPECT_EQ(&*It++, ToRet);
|
|
}
|
|
|
|
TEST(BasicBlockTest, SpliceInstrRange) {
|
|
LLVMContext Ctx;
|
|
std::unique_ptr<Module> M = parseIR(Ctx, R"(
|
|
define void @f(i32 %a) {
|
|
from:
|
|
%fromInstr1 = add i32 %a, %a
|
|
%fromInstr2 = sub i32 %a, %a
|
|
br label %to
|
|
|
|
to:
|
|
%toInstr1 = mul i32 %a, %a
|
|
%toInstr2 = sdiv i32 %a, %a
|
|
ret void
|
|
}
|
|
)");
|
|
Function *F = &*M->begin();
|
|
auto BBIt = F->begin();
|
|
BasicBlock *FromBB = &*BBIt++;
|
|
BasicBlock *ToBB = &*BBIt++;
|
|
|
|
auto FromBBIt = FromBB->begin();
|
|
Instruction *FromI1 = &*FromBBIt++;
|
|
Instruction *FromI2 = &*FromBBIt++;
|
|
Instruction *FromBr = &*FromBBIt++;
|
|
|
|
auto ToBBIt = ToBB->begin();
|
|
Instruction *ToI1 = &*ToBBIt++;
|
|
Instruction *ToI2 = &*ToBBIt++;
|
|
Instruction *ToRet = &*ToBBIt++;
|
|
ToBB->splice(ToI2->getIterator(), FromBB, FromBB->begin(), FromBB->end());
|
|
|
|
EXPECT_EQ(FromBB->size(), 0u);
|
|
|
|
EXPECT_EQ(ToBB->size(), 6u);
|
|
auto It = ToBB->begin();
|
|
EXPECT_EQ(&*It++, ToI1);
|
|
EXPECT_EQ(&*It++, FromI1);
|
|
EXPECT_EQ(&*It++, FromI2);
|
|
EXPECT_EQ(&*It++, FromBr);
|
|
EXPECT_EQ(&*It++, ToI2);
|
|
EXPECT_EQ(&*It++, ToRet);
|
|
}
|
|
|
|
#ifdef EXPENSIVE_CHECKS
|
|
TEST(BasicBlockTest, SpliceEndBeforeBegin) {
|
|
LLVMContext Ctx;
|
|
std::unique_ptr<Module> M = parseIR(Ctx, R"(
|
|
define void @f(i32 %a) {
|
|
from:
|
|
%fromInstr1 = add i32 %a, %a
|
|
%fromInstr2 = sub i32 %a, %a
|
|
br label %to
|
|
|
|
to:
|
|
%toInstr1 = mul i32 %a, %a
|
|
%toInstr2 = sdiv i32 %a, %a
|
|
ret void
|
|
}
|
|
)");
|
|
Function *F = &*M->begin();
|
|
auto BBIt = F->begin();
|
|
BasicBlock *FromBB = &*BBIt++;
|
|
BasicBlock *ToBB = &*BBIt++;
|
|
|
|
auto FromBBIt = FromBB->begin();
|
|
Instruction *FromI1 = &*FromBBIt++;
|
|
Instruction *FromI2 = &*FromBBIt++;
|
|
|
|
auto ToBBIt = ToBB->begin();
|
|
Instruction *ToI2 = &*ToBBIt++;
|
|
|
|
EXPECT_DEATH(ToBB->splice(ToI2->getIterator(), FromBB, FromI2->getIterator(),
|
|
FromI1->getIterator()),
|
|
"FromBeginIt not before FromEndIt!");
|
|
}
|
|
#endif //EXPENSIVE_CHECKS
|
|
|
|
TEST(BasicBlockTest, EraseRange) {
|
|
LLVMContext Ctx;
|
|
std::unique_ptr<Module> M = parseIR(Ctx, R"(
|
|
define void @f(i32 %a) {
|
|
bb0:
|
|
%instr1 = add i32 %a, %a
|
|
%instr2 = sub i32 %a, %a
|
|
ret void
|
|
}
|
|
)");
|
|
Function *F = &*M->begin();
|
|
|
|
auto BB0It = F->begin();
|
|
BasicBlock *BB0 = &*BB0It;
|
|
|
|
auto It = BB0->begin();
|
|
Instruction *Instr1 = &*It++;
|
|
Instruction *Instr2 = &*It++;
|
|
|
|
EXPECT_EQ(BB0->size(), 3u);
|
|
|
|
// Erase no instruction
|
|
BB0->erase(Instr1->getIterator(), Instr1->getIterator());
|
|
EXPECT_EQ(BB0->size(), 3u);
|
|
|
|
// Erase %instr1
|
|
BB0->erase(Instr1->getIterator(), Instr2->getIterator());
|
|
EXPECT_EQ(BB0->size(), 2u);
|
|
EXPECT_EQ(&*BB0->begin(), Instr2);
|
|
|
|
// Erase all instructions
|
|
BB0->erase(BB0->begin(), BB0->end());
|
|
EXPECT_TRUE(BB0->empty());
|
|
}
|
|
} // End anonymous namespace.
|
|
} // End llvm namespace.
|