; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: Unit Test/Tests/DataStructuresTests/StringsTest/StringTest (StringTest)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%struct.ErrorTestStruct = type { i32 }
%struct.String = type { ptr, i32, i32 }

@.str = external hidden unnamed_addr constant [150 x i8], align 1
@ERROR_TEST = external dso_local global ptr, align 8
@__const.testStringSubStringC.tempCharArr = external hidden unnamed_addr constant [19 x i8], align 16
@.str.8 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare ptr @stringInitialization(i32 noundef) #1

declare void @CuAssertIntEquals_LineMsg(ptr noundef, ptr noundef, i32 noundef, ptr noundef, i32 noundef, i32 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare void @destroyString(ptr noundef) #1

declare void @stringChangeStringC(ptr noundef, ptr noundef) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: nounwind uwtable
define dso_local void @testStringSubStringC(ptr noundef %0) #3 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca [19 x i8], align 16
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %6 = call ptr @stringInitialization(i32 noundef 1)
  store ptr %6, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 19, ptr %4) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %4, ptr align 16 @__const.testStringSubStringC.tempCharArr, i64 19, i1 false)
  %7 = call i32 @stringSubStringC(ptr noundef null, ptr noundef null)
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.ErrorTestStruct, ptr %9, i32 0, i32 0
  %11 = load i32, ptr %10, align 4, !tbaa !9
  call void @CuAssertIntEquals_LineMsg(ptr noundef %8, ptr noundef @.str, i32 noundef 274, ptr noundef null, i32 noundef -83386157, i32 noundef %11)
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = call i32 @stringSubStringC(ptr noundef %12, ptr noundef null)
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.ErrorTestStruct, ptr %15, i32 0, i32 0
  %17 = load i32, ptr %16, align 4, !tbaa !9
  call void @CuAssertIntEquals_LineMsg(ptr noundef %14, ptr noundef @.str, i32 noundef 277, ptr noundef null, i32 noundef -83384987, i32 noundef %17)
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds [19 x i8], ptr %4, i64 0, i64 0
  call void @stringChangeStringC(ptr noundef %18, ptr noundef %19)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !12
  br label %20

20:                                               ; preds = %35, %1
  %21 = load i32, ptr %5, align 4, !tbaa !12
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.String, ptr %22, i32 0, i32 1
  %24 = load i32, ptr %23, align 8, !tbaa !13
  %25 = icmp slt i32 %21, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %38

27:                                               ; preds = %20
  %28 = load ptr, ptr %2, align 8, !tbaa !5
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  %30 = getelementptr inbounds [19 x i8], ptr %4, i64 0, i64 0
  %31 = load i32, ptr %5, align 4, !tbaa !12
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i8, ptr %30, i64 %32
  %34 = call i32 @stringSubStringC(ptr noundef %29, ptr noundef %33)
  call void @CuAssertIntEquals_LineMsg(ptr noundef %28, ptr noundef @.str, i32 noundef 282, ptr noundef null, i32 noundef 1, i32 noundef %34)
  br label %35

35:                                               ; preds = %27
  %36 = load i32, ptr %5, align 4, !tbaa !12
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %5, align 4, !tbaa !12
  br label %20, !llvm.loop !15

38:                                               ; preds = %26
  %39 = load ptr, ptr %2, align 8, !tbaa !5
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = call i32 @stringSubStringC(ptr noundef %40, ptr noundef @.str.8)
  call void @CuAssertIntEquals_LineMsg(ptr noundef %39, ptr noundef @.str, i32 noundef 284, ptr noundef null, i32 noundef 0, i32 noundef %41)
  %42 = load ptr, ptr %2, align 8, !tbaa !5
  %43 = load ptr, ptr %3, align 8, !tbaa !5
  %44 = call i32 @stringSubStringC(ptr noundef %43, ptr noundef @.str.9)
  call void @CuAssertIntEquals_LineMsg(ptr noundef %42, ptr noundef @.str, i32 noundef 285, ptr noundef null, i32 noundef 0, i32 noundef %44)
  %45 = load ptr, ptr %2, align 8, !tbaa !5
  %46 = load ptr, ptr %3, align 8, !tbaa !5
  %47 = call i32 @stringSubStringC(ptr noundef %46, ptr noundef @.str.10)
  call void @CuAssertIntEquals_LineMsg(ptr noundef %45, ptr noundef @.str, i32 noundef 286, ptr noundef null, i32 noundef 0, i32 noundef %47)
  %48 = load ptr, ptr %2, align 8, !tbaa !5
  %49 = load ptr, ptr %3, align 8, !tbaa !5
  %50 = call i32 @stringSubStringC(ptr noundef %49, ptr noundef @.str.11)
  call void @CuAssertIntEquals_LineMsg(ptr noundef %48, ptr noundef @.str, i32 noundef 287, ptr noundef null, i32 noundef 0, i32 noundef %50)
  %51 = load ptr, ptr %3, align 8, !tbaa !5
  call void @destroyString(ptr noundef %51)
  call void @llvm.lifetime.end.p0(i64 19, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void
}

declare i32 @stringSubStringC(ptr noundef, ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"ErrorTestStruct", !11, i64 0}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!14, !11, i64 8}
!14 = !{!"String", !6, i64 0, !11, i64 8, !11, i64 12}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str = external hidden unnamed_addr constant [150 x i8], align 1
@ERROR_TEST = external dso_local local_unnamed_addr global ptr, align 8
@__const.testStringSubStringC.tempCharArr = external hidden unnamed_addr constant [19 x i8], align 16
@.str.8 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare ptr @stringInitialization(i32 noundef) local_unnamed_addr #1

declare void @CuAssertIntEquals_LineMsg(ptr noundef, ptr noundef, i32 noundef, ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare void @destroyString(ptr noundef) local_unnamed_addr #1

declare void @stringChangeStringC(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: nounwind uwtable
define dso_local void @testStringSubStringC(ptr noundef %0) local_unnamed_addr #3 {
  %2 = alloca [19 x i8], align 16
  %3 = tail call ptr @stringInitialization(i32 noundef 1) #4
  call void @llvm.lifetime.start.p0(i64 19, ptr nonnull %2) #4
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(19) %2, ptr noundef nonnull align 16 dereferenceable(19) @__const.testStringSubStringC.tempCharArr, i64 19, i1 false)
  %4 = tail call i32 @stringSubStringC(ptr noundef null, ptr noundef null) #4
  %5 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %6 = load i32, ptr %5, align 4, !tbaa !9
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 274, ptr noundef null, i32 noundef -83386157, i32 noundef %6) #4
  %7 = tail call i32 @stringSubStringC(ptr noundef %3, ptr noundef null) #4
  %8 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %9 = load i32, ptr %8, align 4, !tbaa !9
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 277, ptr noundef null, i32 noundef -83384987, i32 noundef %9) #4
  call void @stringChangeStringC(ptr noundef %3, ptr noundef nonnull %2) #4
  %10 = getelementptr inbounds i8, ptr %3, i64 8
  %11 = load i32, ptr %10, align 8, !tbaa !12
  %12 = icmp sgt i32 %11, 0
  br i1 %12, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  %13 = call i32 @stringSubStringC(ptr noundef nonnull %3, ptr noundef nonnull @.str.8) #4
  call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 284, ptr noundef null, i32 noundef 0, i32 noundef %13) #4
  %14 = call i32 @stringSubStringC(ptr noundef nonnull %3, ptr noundef nonnull @.str.9) #4
  call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 285, ptr noundef null, i32 noundef 0, i32 noundef %14) #4
  %15 = call i32 @stringSubStringC(ptr noundef nonnull %3, ptr noundef nonnull @.str.10) #4
  call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 286, ptr noundef null, i32 noundef 0, i32 noundef %15) #4
  %16 = call i32 @stringSubStringC(ptr noundef nonnull %3, ptr noundef nonnull @.str.11) #4
  call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 287, ptr noundef null, i32 noundef 0, i32 noundef %16) #4
  call void @destroyString(ptr noundef nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 19, ptr nonnull %2) #4
  ret void

.lr.ph:                                           ; preds = %1, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %1 ]
  %17 = getelementptr inbounds i8, ptr %2, i64 %indvars.iv
  %18 = call i32 @stringSubStringC(ptr noundef nonnull %3, ptr noundef nonnull %17) #4
  call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 282, ptr noundef null, i32 noundef 1, i32 noundef %18) #4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %19 = load i32, ptr %10, align 8, !tbaa !12
  %20 = sext i32 %19 to i64
  %21 = icmp slt i64 %indvars.iv.next, %20
  br i1 %21, label %.lr.ph, label %._crit_edge, !llvm.loop !14
}

declare i32 @stringSubStringC(ptr noundef, ptr noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"ErrorTestStruct", !11, i64 0}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !11, i64 8}
!13 = !{!"String", !6, i64 0, !11, i64 8, !11, i64 12}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass