; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: DataStructure/Lists/Sources (ArrayList)

; 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.ArrayList = type { ptr, i32, i32, ptr, ptr }

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [42 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.14 = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @arrayListGetLastIndex(ptr noundef %0, ptr noundef %1) #3 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %10, label %13

10:                                               ; preds = %2
  %11 = load ptr, ptr @stderr, align 8, !tbaa !5
  %12 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %11, ptr noundef @.str.7, ptr noundef @.str.8, ptr noundef @.str.2) #4
  call void @exit(i32 noundef -83386157) #5
  unreachable

13:                                               ; preds = %2
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = icmp eq ptr %14, null
  br i1 %15, label %16, label %19

16:                                               ; preds = %13
  %17 = load ptr, ptr @stderr, align 8, !tbaa !5
  %18 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef @.str, ptr noundef @.str.9, ptr noundef @.str.2) #4
  call void @exit(i32 noundef -83384987) #5
  unreachable

19:                                               ; preds = %13
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.ArrayList, ptr %20, i32 0, i32 4
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  %23 = icmp eq ptr %22, null
  br i1 %23, label %24, label %27

24:                                               ; preds = %19
  %25 = load ptr, ptr @stderr, align 8, !tbaa !5
  %26 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %25, ptr noundef @.str.7, ptr noundef @.str.14, ptr noundef @.str.2) #4
  call void @exit(i32 noundef -83386157) #5
  unreachable

27:                                               ; preds = %19
  br label %28

28:                                               ; preds = %27
  br label %29

29:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.ArrayList, ptr %30, i32 0, i32 2
  %32 = load i32, ptr %31, align 4, !tbaa !12
  %33 = sub nsw i32 %32, 1
  store i32 %33, ptr %6, align 4, !tbaa !13
  br label %34

34:                                               ; preds = %55, %29
  %35 = load i32, ptr %6, align 4, !tbaa !13
  %36 = icmp sge i32 %35, 0
  br i1 %36, label %38, label %37

37:                                               ; preds = %34
  store i32 2, ptr %7, align 4
  br label %58

38:                                               ; preds = %34
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.ArrayList, ptr %39, i32 0, i32 4
  %41 = load ptr, ptr %40, align 8, !tbaa !9
  %42 = load ptr, ptr %4, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.ArrayList, ptr %42, i32 0, i32 0
  %44 = load ptr, ptr %43, align 8, !tbaa !14
  %45 = load i32, ptr %6, align 4, !tbaa !13
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds ptr, ptr %44, i64 %46
  %48 = load ptr, ptr %47, align 8, !tbaa !5
  %49 = load ptr, ptr %5, align 8, !tbaa !5
  %50 = call i32 %41(ptr noundef %48, ptr noundef %49)
  %51 = icmp eq i32 %50, 0
  br i1 %51, label %52, label %54

52:                                               ; preds = %38
  %53 = load i32, ptr %6, align 4, !tbaa !13
  store i32 %53, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %58

54:                                               ; preds = %38
  br label %55

55:                                               ; preds = %54
  %56 = load i32, ptr %6, align 4, !tbaa !13
  %57 = add nsw i32 %56, -1
  store i32 %57, ptr %6, align 4, !tbaa !13
  br label %34, !llvm.loop !15

58:                                               ; preds = %52, %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  %59 = load i32, ptr %7, align 4
  switch i32 %59, label %63 [
    i32 2, label %60
    i32 1, label %61
  ]

60:                                               ; preds = %58
  store i32 -1, ptr %3, align 4
  br label %61

61:                                               ; preds = %60, %58
  %62 = load i32, ptr %3, align 4
  ret i32 %62

63:                                               ; preds = %58
  unreachable
}

attributes #0 = { nounwind "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 #1 = { noreturn nounwind "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 nosync 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 }
attributes #5 = { noreturn 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, !6, i64 24}
!10 = !{!"ArrayList", !6, i64 0, !11, i64 8, !11, i64 12, !6, i64 16, !6, i64 24}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 12}
!13 = !{!11, !11, i64 0}
!14 = !{!10, !6, i64 0}
!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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [42 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.14 = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -2147483648, 2147483647) i32 @arrayListGetLastIndex(ptr noundef readonly %0, ptr noundef %1) local_unnamed_addr #2 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %4, label %7

4:                                                ; preds = %2
  %5 = load ptr, ptr @stderr, align 8, !tbaa !5
  %6 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %5, ptr noundef nonnull @.str.7, ptr noundef nonnull @.str.8, ptr noundef nonnull @.str.2) #3
  tail call void @exit(i32 noundef -83386157) #4
  unreachable

7:                                                ; preds = %2
  %8 = icmp eq ptr %1, null
  br i1 %8, label %9, label %12

9:                                                ; preds = %7
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str, ptr noundef nonnull @.str.9, ptr noundef nonnull @.str.2) #3
  tail call void @exit(i32 noundef -83384987) #4
  unreachable

12:                                               ; preds = %7
  %13 = getelementptr inbounds i8, ptr %0, i64 24
  %14 = load ptr, ptr %13, align 8, !tbaa !9
  %15 = icmp eq ptr %14, null
  br i1 %15, label %16, label %19

16:                                               ; preds = %12
  %17 = load ptr, ptr @stderr, align 8, !tbaa !5
  %18 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef nonnull @.str.7, ptr noundef nonnull @.str.14, ptr noundef nonnull @.str.2) #3
  tail call void @exit(i32 noundef -83386157) #4
  unreachable

19:                                               ; preds = %12
  %20 = getelementptr inbounds i8, ptr %0, i64 12
  %21 = load i32, ptr %20, align 4, !tbaa !12
  %22 = zext i32 %21 to i64
  br label %23

23:                                               ; preds = %26, %19
  %indvars.iv = phi i64 [ %indvars.iv.next, %26 ], [ %22, %19 ]
  %24 = trunc nuw i64 %indvars.iv to i32
  %25 = icmp slt i32 %24, 1
  br i1 %25, label %.split.loop.exit17, label %26

26:                                               ; preds = %23
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %27 = load ptr, ptr %13, align 8, !tbaa !9
  %28 = load ptr, ptr %0, align 8, !tbaa !13
  %29 = and i64 %indvars.iv.next, 4294967295
  %30 = getelementptr inbounds ptr, ptr %28, i64 %29
  %31 = load ptr, ptr %30, align 8, !tbaa !5
  %32 = tail call i32 %27(ptr noundef %31, ptr noundef nonnull %1) #5
  %33 = icmp eq i32 %32, 0
  br i1 %33, label %.split.loop.exit, label %23, !llvm.loop !14

.split.loop.exit:                                 ; preds = %26
  %indvars.le = trunc i64 %indvars.iv.next to i32
  br label %.split.loop.exit17

.split.loop.exit17:                               ; preds = %23, %.split.loop.exit
  %spec.select = phi i32 [ %indvars.le, %.split.loop.exit ], [ -1, %23 ]
  ret i32 %spec.select
}

attributes #0 = { nofree nounwind "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 #1 = { noreturn nounwind "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 = { 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 #3 = { cold nounwind }
attributes #4 = { noreturn nounwind }
attributes #5 = { 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, !6, i64 24}
!10 = !{!"ArrayList", !6, i64 0, !11, i64 8, !11, i64 12, !6, i64 16, !6, i64 24}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 12}
!13 = !{!10, !6, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass