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llvm-project/llvm/unittests/Transforms/Utils/CallPromotionUtilsTest.cpp
Nikita Popov aef9959859 [IR] Add ConstantExpr::getInBoundsPtrAdd() (#181639) 
As a followup to https://github.com/llvm/llvm-project/pull/181365, this
adds the `getInBoundsPtrAdd()` variant and updates code to use it.
2026-02-16 14:25:43 +01:00

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//===- CallPromotionUtilsTest.cpp - CallPromotionUtils 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/Transforms/Utils/CallPromotionUtils.h"
#include "llvm/Analysis/CtxProfAnalysis.h"
#include "llvm/AsmParser/Parser.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/NoFolder.h"
#include "llvm/IR/PassInstrumentation.h"
#include "llvm/ProfileData/PGOCtxProfReader.h"
#include "llvm/ProfileData/PGOCtxProfWriter.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Testing/Support/SupportHelpers.h"
#include "gtest/gtest.h"
using namespace llvm;
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("UtilsTests", errs());
return Mod;
}
// Returns a constant representing the vtable's address point specified by the
// offset.
static Constant *getVTableAddressPointOffset(GlobalVariable *VTable,
uint32_t AddressPointOffset) {
Module &M = *VTable->getParent();
LLVMContext &Context = M.getContext();
assert(AddressPointOffset <
M.getDataLayout().getTypeAllocSize(VTable->getValueType()) &&
"Out-of-bound access");
return ConstantExpr::getInBoundsPtrAdd(
VTable,
llvm::ConstantInt::get(Type::getInt32Ty(Context), AddressPointOffset));
}
TEST(CallPromotionUtilsTest, TryPromoteCall) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
%class.Impl = type <{ %class.Interface, i32, [4 x i8] }>
%class.Interface = type { ptr }
@_ZTV4Impl = constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr @_ZN4Impl3RunEv] }
define void @f() {
entry:
%o = alloca %class.Impl
%base = getelementptr %class.Impl, ptr %o, i64 0, i32 0, i32 0
store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTV4Impl, i64 0, i32 0, i64 2), ptr %base
%f = getelementptr inbounds %class.Impl, ptr %o, i64 0, i32 1
store i32 3, ptr %f
%base.i = getelementptr inbounds %class.Impl, ptr %o, i64 0, i32 0
%vtable.i = load ptr, ptr %base.i
%fp = load ptr, ptr %vtable.i
call void %fp(ptr nonnull %base.i)
ret void
}
declare void @_ZN4Impl3RunEv(ptr %this)
)IR");
auto *GV = M->getNamedValue("f");
ASSERT_TRUE(GV);
auto *F = dyn_cast<Function>(GV);
ASSERT_TRUE(F);
Instruction *Inst = &F->front().front();
auto *AI = dyn_cast<AllocaInst>(Inst);
ASSERT_TRUE(AI);
Inst = &*++F->front().rbegin();
auto *CI = dyn_cast<CallInst>(Inst);
ASSERT_TRUE(CI);
ASSERT_FALSE(CI->getCalledFunction());
bool IsPromoted = tryPromoteCall(*CI);
EXPECT_TRUE(IsPromoted);
GV = M->getNamedValue("_ZN4Impl3RunEv");
ASSERT_TRUE(GV);
auto *F1 = dyn_cast<Function>(GV);
EXPECT_EQ(F1, CI->getCalledFunction());
}
TEST(CallPromotionUtilsTest, TryPromoteCall_NoFPLoad) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
%class.Impl = type <{ %class.Interface, i32, [4 x i8] }>
%class.Interface = type { ptr}
define void @f(ptr %fp, ptr nonnull %base.i) {
entry:
call void %fp(ptr nonnull %base.i)
ret void
}
)IR");
auto *GV = M->getNamedValue("f");
ASSERT_TRUE(GV);
auto *F = dyn_cast<Function>(GV);
ASSERT_TRUE(F);
Instruction *Inst = &F->front().front();
auto *CI = dyn_cast<CallInst>(Inst);
ASSERT_TRUE(CI);
ASSERT_FALSE(CI->getCalledFunction());
bool IsPromoted = tryPromoteCall(*CI);
EXPECT_FALSE(IsPromoted);
}
TEST(CallPromotionUtilsTest, TryPromoteCall_NoVTablePtrLoad) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
%class.Impl = type <{ %class.Interface, i32, [4 x i8] }>
%class.Interface = type { ptr }
define void @f(ptr %vtable.i, ptr nonnull %base.i) {
entry:
%fp = load ptr, ptr%vtable.i
call void %fp(ptr nonnull %base.i)
ret void
}
)IR");
auto *GV = M->getNamedValue("f");
ASSERT_TRUE(GV);
auto *F = dyn_cast<Function>(GV);
ASSERT_TRUE(F);
Instruction *Inst = &*++F->front().rbegin();
auto *CI = dyn_cast<CallInst>(Inst);
ASSERT_TRUE(CI);
ASSERT_FALSE(CI->getCalledFunction());
bool IsPromoted = tryPromoteCall(*CI);
EXPECT_FALSE(IsPromoted);
}
TEST(CallPromotionUtilsTest, TryPromoteCall_NoVTableInitFound) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
%class.Impl = type <{ %class.Interface, i32, [4 x i8] }>
%class.Interface = type { ptr }
define void @f() {
entry:
%o = alloca %class.Impl
%f = getelementptr inbounds %class.Impl, ptr %o, i64 0, i32 1
store i32 3, ptr %f
%base.i = getelementptr inbounds %class.Impl, ptr %o, i64 0, i32 0
%vtable.i = load ptr, ptr %base.i
%fp = load ptr, ptr %vtable.i
call void %fp(ptr nonnull %base.i)
ret void
}
declare void @_ZN4Impl3RunEv(ptr %this)
)IR");
auto *GV = M->getNamedValue("f");
ASSERT_TRUE(GV);
auto *F = dyn_cast<Function>(GV);
ASSERT_TRUE(F);
Instruction *Inst = &*++F->front().rbegin();
auto *CI = dyn_cast<CallInst>(Inst);
ASSERT_TRUE(CI);
ASSERT_FALSE(CI->getCalledFunction());
bool IsPromoted = tryPromoteCall(*CI);
EXPECT_FALSE(IsPromoted);
}
TEST(CallPromotionUtilsTest, TryPromoteCall_EmptyVTable) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
%class.Impl = type <{ %class.Interface, i32, [4 x i8] }>
%class.Interface = type { ptr }
@_ZTV4Impl = external global { [3 x ptr] }
define void @f() {
entry:
%o = alloca %class.Impl
%base = getelementptr %class.Impl, %class.Impl* %o, i64 0, i32 0, i32 0
store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTV4Impl, i64 0, i32 0, i64 2), ptr %base
%f = getelementptr inbounds %class.Impl, %class.Impl* %o, i64 0, i32 1
store i32 3, ptr %f
%base.i = getelementptr inbounds %class.Impl, ptr %o, i64 0, i32 0
%vtable.i = load ptr, ptr %base.i
%fp = load ptr, ptr %vtable.i
call void %fp(ptr nonnull %base.i)
ret void
}
declare void @_ZN4Impl3RunEv(ptr %this)
)IR");
auto *GV = M->getNamedValue("f");
ASSERT_TRUE(GV);
auto *F = dyn_cast<Function>(GV);
ASSERT_TRUE(F);
Instruction *Inst = &F->front().front();
auto *AI = dyn_cast<AllocaInst>(Inst);
ASSERT_TRUE(AI);
Inst = &*++F->front().rbegin();
auto *CI = dyn_cast<CallInst>(Inst);
ASSERT_TRUE(CI);
ASSERT_FALSE(CI->getCalledFunction());
bool IsPromoted = tryPromoteCall(*CI);
EXPECT_FALSE(IsPromoted);
}
TEST(CallPromotionUtilsTest, TryPromoteCall_NullFP) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
%class.Impl = type <{ %class.Interface, i32, [4 x i8] }>
%class.Interface = type { ptr }
@_ZTV4Impl = constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr null] }
define void @f() {
entry:
%o = alloca %class.Impl
%base = getelementptr %class.Impl, ptr %o, i64 0, i32 0, i32 0
store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTV4Impl, i64 0, i32 0, i64 2), ptr %base
%f = getelementptr inbounds %class.Impl, %class.Impl* %o, i64 0, i32 1
store i32 3, ptr %f
%base.i = getelementptr inbounds %class.Impl, ptr %o, i64 0, i32 0
%vtable.i = load ptr, ptr %base.i
%fp = load ptr, ptr %vtable.i
call void %fp(ptr nonnull %base.i)
ret void
}
declare void @_ZN4Impl3RunEv(ptr %this)
)IR");
auto *GV = M->getNamedValue("f");
ASSERT_TRUE(GV);
auto *F = dyn_cast<Function>(GV);
ASSERT_TRUE(F);
Instruction *Inst = &F->front().front();
auto *AI = dyn_cast<AllocaInst>(Inst);
ASSERT_TRUE(AI);
Inst = &*++F->front().rbegin();
auto *CI = dyn_cast<CallInst>(Inst);
ASSERT_TRUE(CI);
ASSERT_FALSE(CI->getCalledFunction());
bool IsPromoted = tryPromoteCall(*CI);
EXPECT_FALSE(IsPromoted);
}
// Based on clang/test/CodeGenCXX/member-function-pointer-calls.cpp
TEST(CallPromotionUtilsTest, TryPromoteCall_MemberFunctionCalls) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
%struct.A = type { ptr }
@_ZTV1A = linkonce_odr unnamed_addr constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr null, ptr @_ZN1A3vf1Ev, ptr @_ZN1A3vf2Ev] }, align 8
define i32 @_Z2g1v() {
entry:
%a = alloca %struct.A, align 8
%0 = getelementptr %struct.A, ptr %a, i64 0, i32 0
store ptr getelementptr inbounds ({ [4 x ptr] }, ptr @_ZTV1A, i64 0, i32 0, i64 2), ptr %0, align 8
%vtable.i = load ptr, ptr %a, align 8
%memptr.virtualfn.i = load ptr, ptr %vtable.i, align 8
%call.i = call i32 %memptr.virtualfn.i(%struct.A* %a)
ret i32 %call.i
}
define i32 @_Z2g2v() {
entry:
%a = alloca %struct.A, align 8
%0 = getelementptr %struct.A, ptr %a, i64 0, i32 0
store ptr getelementptr inbounds ({ [4 x ptr] }, ptr @_ZTV1A, i64 0, i32 0, i64 2), ptr %0, align 8
%vtable.i = load ptr, ptr %a, align 8
%1 = getelementptr i8, ptr %vtable.i, i64 8
%memptr.virtualfn.i = load ptr, ptr %1, align 8
%call.i = call i32 %memptr.virtualfn.i(ptr %a)
ret i32 %call.i
}
declare i32 @_ZN1A3vf1Ev(ptr %this)
declare i32 @_ZN1A3vf2Ev(ptr %this)
)IR");
auto *GV = M->getNamedValue("_Z2g1v");
ASSERT_TRUE(GV);
auto *F = dyn_cast<Function>(GV);
ASSERT_TRUE(F);
Instruction *Inst = &F->front().front();
auto *AI = dyn_cast<AllocaInst>(Inst);
ASSERT_TRUE(AI);
Inst = &*++F->front().rbegin();
auto *CI = dyn_cast<CallInst>(Inst);
ASSERT_TRUE(CI);
ASSERT_FALSE(CI->getCalledFunction());
bool IsPromoted1 = tryPromoteCall(*CI);
EXPECT_TRUE(IsPromoted1);
GV = M->getNamedValue("_ZN1A3vf1Ev");
ASSERT_TRUE(GV);
F = dyn_cast<Function>(GV);
EXPECT_EQ(F, CI->getCalledFunction());
GV = M->getNamedValue("_Z2g2v");
ASSERT_TRUE(GV);
F = dyn_cast<Function>(GV);
ASSERT_TRUE(F);
Inst = &F->front().front();
AI = dyn_cast<AllocaInst>(Inst);
ASSERT_TRUE(AI);
Inst = &*++F->front().rbegin();
CI = dyn_cast<CallInst>(Inst);
ASSERT_TRUE(CI);
ASSERT_FALSE(CI->getCalledFunction());
bool IsPromoted2 = tryPromoteCall(*CI);
EXPECT_TRUE(IsPromoted2);
GV = M->getNamedValue("_ZN1A3vf2Ev");
ASSERT_TRUE(GV);
F = dyn_cast<Function>(GV);
EXPECT_EQ(F, CI->getCalledFunction());
}
// Check that it isn't crashing due to missing promotion legality.
TEST(CallPromotionUtilsTest, TryPromoteCall_Legality) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
%struct1 = type <{ i32, i64 }>
%struct2 = type <{ i32, i64 }>
%class.Impl = type <{ %class.Interface, i32, [4 x i8] }>
%class.Interface = type { ptr }
@_ZTV4Impl = constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr @_ZN4Impl3RunEv] }
define %struct1 @f() {
entry:
%o = alloca %class.Impl
%base = getelementptr %class.Impl, ptr %o, i64 0, i32 0, i32 0
store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTV4Impl, i64 0, i32 0, i64 2), ptr %base
%f = getelementptr inbounds %class.Impl, ptr %o, i64 0, i32 1
store i32 3, ptr %f
%base.i = getelementptr inbounds %class.Impl, ptr %o, i64 0, i32 0
%vtable.i = load ptr, ptr%base.i
%fp = load ptr, ptr %vtable.i
%rv = call %struct1 %fp(ptr nonnull %base.i)
ret %struct1 %rv
}
declare %struct2 @_ZN4Impl3RunEv(ptr %this)
)IR");
auto *GV = M->getNamedValue("f");
ASSERT_TRUE(GV);
auto *F = dyn_cast<Function>(GV);
ASSERT_TRUE(F);
Instruction *Inst = &F->front().front();
auto *AI = dyn_cast<AllocaInst>(Inst);
ASSERT_TRUE(AI);
Inst = &*++F->front().rbegin();
auto *CI = dyn_cast<CallInst>(Inst);
ASSERT_TRUE(CI);
ASSERT_FALSE(CI->getCalledFunction());
bool IsPromoted = tryPromoteCall(*CI);
EXPECT_FALSE(IsPromoted);
}
TEST(CallPromotionUtilsTest, promoteCallWithVTableCmp) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@_ZTV5Base1 = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr null, ptr @_ZN5Base15func0Ev, ptr @_ZN5Base15func1Ev] }, !type !0
@_ZTV8Derived1 = constant { [4 x ptr], [3 x ptr] } { [4 x ptr] [ptr inttoptr (i64 -8 to ptr), ptr null, ptr @_ZN5Base15func0Ev, ptr @_ZN5Base15func1Ev], [3 x ptr] [ptr null, ptr null, ptr @_ZN5Base25func2Ev] }, !type !0, !type !1, !type !2
@_ZTV8Derived2 = constant { [3 x ptr], [3 x ptr], [4 x ptr] } { [3 x ptr] [ptr null, ptr null, ptr @_ZN5Base35func3Ev], [3 x ptr] [ptr inttoptr (i64 -8 to ptr), ptr null, ptr @_ZN5Base25func2Ev], [4 x ptr] [ptr inttoptr (i64 -16 to ptr), ptr null, ptr @_ZN5Base15func0Ev, ptr @_ZN5Base15func1Ev] }, !type !3, !type !4, !type !5, !type !6
define i32 @testfunc(ptr %d) {
entry:
%vtable = load ptr, ptr %d, !prof !7
%vfn = getelementptr inbounds ptr, ptr %vtable, i64 1
%0 = load ptr, ptr %vfn
%call = tail call i32 %0(ptr %d), !prof !8
ret i32 %call
}
define i32 @_ZN5Base15func1Ev(ptr %this) {
entry:
ret i32 2
}
declare i32 @_ZN5Base25func2Ev(ptr)
declare i32 @_ZN5Base15func0Ev(ptr)
declare void @_ZN5Base35func3Ev(ptr)
!0 = !{i64 16, !"_ZTS5Base1"}
!1 = !{i64 48, !"_ZTS5Base2"}
!2 = !{i64 16, !"_ZTS8Derived1"}
!3 = !{i64 64, !"_ZTS5Base1"}
!4 = !{i64 40, !"_ZTS5Base2"}
!5 = !{i64 16, !"_ZTS5Base3"}
!6 = !{i64 16, !"_ZTS8Derived2"}
!7 = !{!"VP", i32 2, i64 1600, i64 -9064381665493407289, i64 800, i64 5035968517245772950, i64 500, i64 3215870116411581797, i64 300}
!8 = !{!"VP", i32 0, i64 1600, i64 6804820478065511155, i64 1600})IR");
Function *F = M->getFunction("testfunc");
CallInst *CI = dyn_cast<CallInst>(&*std::next(F->front().rbegin()));
ASSERT_TRUE(CI && CI->isIndirectCall());
// Create the constant and the branch weights
SmallVector<Constant *, 3> VTableAddressPoints;
for (auto &[VTableName, AddressPointOffset] : {std::pair{"_ZTV5Base1", 16},
{"_ZTV8Derived1", 16},
{"_ZTV8Derived2", 64}})
VTableAddressPoints.push_back(getVTableAddressPointOffset(
M->getGlobalVariable(VTableName), AddressPointOffset));
MDBuilder MDB(C);
MDNode *BranchWeights = MDB.createBranchWeights(1600, 0);
size_t OrigEntryBBSize = F->front().size();
LoadInst *VPtr = dyn_cast<LoadInst>(&*F->front().begin());
Function *Callee = M->getFunction("_ZN5Base15func1Ev");
// Tests that promoted direct call is returned.
CallBase &DirectCB = promoteCallWithVTableCmp(
*CI, VPtr, Callee, VTableAddressPoints, BranchWeights);
EXPECT_EQ(DirectCB.getCalledOperand(), Callee);
// Promotion inserts 3 icmp instructions and 2 or instructions, and removes
// 1 call instruction from the entry block.
EXPECT_EQ(F->front().size(), OrigEntryBBSize + 4);
}
TEST(CallPromotionUtilsTest, PromoteWithIcmpAndCtxProf) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"IR(
define i32 @testfunc1(ptr %d) !guid !0 {
call void @llvm.instrprof.increment(ptr @testfunc1, i64 0, i32 1, i32 0)
call void @llvm.instrprof.callsite(ptr @testfunc1, i64 0, i32 1, i32 0, ptr %d)
%call = call i32 %d()
ret i32 %call
}
define i32 @f1() !guid !1 {
call void @llvm.instrprof.increment(ptr @f1, i64 0, i32 1, i32 0)
ret i32 2
}
define i32 @f2() !guid !2 {
call void @llvm.instrprof.increment(ptr @f2, i64 0, i32 1, i32 0)
call void @llvm.instrprof.callsite(ptr @f2, i64 0, i32 1, i32 0, ptr @f4)
%r = call i32 @f4()
ret i32 %r
}
define i32 @testfunc2(ptr %p) !guid !4 {
call void @llvm.instrprof.increment(ptr @testfunc2, i64 0, i32 1, i32 0)
call void @llvm.instrprof.callsite(ptr @testfunc2, i64 0, i32 1, i32 0, ptr @testfunc1)
%r = call i32 @testfunc1(ptr %p)
ret i32 %r
}
declare i32 @f3()
define i32 @f4() !guid !3 {
ret i32 3
}
!0 = !{i64 1000}
!1 = !{i64 1001}
!2 = !{i64 1002}
!3 = !{i64 1004}
!4 = !{i64 1005}
)IR");
const char *Profile = R"json(
{ "Contexts":
[
{
"Guid": 1000,
"TotalRootEntryCount": 1,
"Counters": [1],
"Callsites": [
[{ "Guid": 1001,
"Counters": [10]},
{ "Guid": 1002,
"Counters": [11],
"Callsites": [[{"Guid": 1004, "Counters":[13]}]]
},
{ "Guid": 1003,
"Counters": [12]
}]]
},
{
"Guid": 1005,
"TotalRootEntryCount": 1,
"Counters": [2],
"Callsites": [
[{ "Guid": 1000,
"Counters": [1],
"Callsites": [
[{ "Guid": 1001,
"Counters": [101]},
{ "Guid": 1002,
"Counters": [102],
"Callsites": [[{"Guid": 1004, "Counters":[104]}]]
},
{ "Guid": 1003,
"Counters": [103]
}]]}]]}]}
)json";
llvm::unittest::TempFile ProfileFile("ctx_profile", "", "", /*Unique=*/true);
{
std::error_code EC;
raw_fd_stream Out(ProfileFile.path(), EC);
ASSERT_FALSE(EC);
// "False" means no error.
ASSERT_FALSE(llvm::createCtxProfFromYAML(Profile, Out));
}
ModuleAnalysisManager MAM;
MAM.registerPass([&]() { return CtxProfAnalysis(ProfileFile.path()); });
MAM.registerPass([&]() { return PassInstrumentationAnalysis(); });
auto &CtxProf = MAM.getResult<CtxProfAnalysis>(*M);
auto *Caller = M->getFunction("testfunc1");
ASSERT_NE(Caller, nullptr);
auto *Callee = M->getFunction("f2");
ASSERT_NE(Callee, nullptr);
auto *IndirectCS = [&]() -> CallBase * {
for (auto &BB : *Caller)
for (auto &I : BB)
if (auto *CB = dyn_cast<CallBase>(&I); CB && CB->isIndirectCall())
return CB;
return nullptr;
}();
ASSERT_NE(IndirectCS, nullptr);
promoteCallWithIfThenElse(*IndirectCS, *Callee, CtxProf);
std::string Str;
raw_string_ostream OS(Str);
CtxProfAnalysisPrinterPass Printer(OS);
Printer.run(*M, MAM);
const char *Expected = R"yaml(
Contexts:
- Guid: 1000
TotalRootEntryCount: 1
Counters: [ 1, 11, 22 ]
Callsites:
- - Guid: 1001
Counters: [ 10 ]
- Guid: 1003
Counters: [ 12 ]
- - Guid: 1002
Counters: [ 11 ]
Callsites:
- - Guid: 1004
Counters: [ 13 ]
- Guid: 1005
TotalRootEntryCount: 1
Counters: [ 2 ]
Callsites:
- - Guid: 1000
Counters: [ 1, 102, 204 ]
Callsites:
- - Guid: 1001
Counters: [ 101 ]
- Guid: 1003
Counters: [ 103 ]
- - Guid: 1002
Counters: [ 102 ]
Callsites:
- - Guid: 1004
Counters: [ 104 ]
)yaml";
EXPECT_EQ(Expected, Str);
}
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