; LLVM IR from mahendramahara/DSA-in-C-Programing :: LINKED-LIST (DeleteAtAnyPositionLinkedList1)

; 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"

@__const.main.items = external hidden unnamed_addr constant [5 x i32], align 16
@.str = external hidden unnamed_addr constant [43 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [42 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local void @main() #0 {
  %1 = alloca [5 x i32], align 16
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 20, ptr %1) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %1, ptr align 16 @__const.main.items, i64 20, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 5, ptr %3, align 4, !tbaa !5
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %4

4:                                                ; preds = %13, %0
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = icmp slt i32 %5, %6
  br i1 %7, label %8, label %16

8:                                                ; preds = %4
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = getelementptr inbounds [5 x i32], ptr %1, i64 0, i64 %10
  %12 = load i32, ptr %11, align 4, !tbaa !5
  call void @beginsert(i32 noundef %12)
  br label %13

13:                                               ; preds = %8
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = add nsw i32 %14, 1
  store i32 %15, ptr %2, align 4, !tbaa !5
  br label %4, !llvm.loop !9

16:                                               ; preds = %4
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  call void @display()
  call void @deleteatpos()
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  call void @display()
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.end.p0(i64 20, ptr %1) #4
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #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
declare dso_local void @beginsert(i32 noundef) #0

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local void @deleteatpos() #0

; Function Attrs: nounwind uwtable
declare dso_local void @display() #0

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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"

@__const.main.items = external hidden unnamed_addr constant [5 x i32], align 16
@.str = external hidden unnamed_addr constant [43 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [42 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local void @main() local_unnamed_addr #0 {
  %1 = load i32, ptr @__const.main.items, align 16, !tbaa !5
  tail call void @beginsert(i32 noundef %1)
  %2 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.items, i64 4), align 4, !tbaa !5
  tail call void @beginsert(i32 noundef %2)
  %3 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.items, i64 8), align 8, !tbaa !5
  tail call void @beginsert(i32 noundef %3)
  %4 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.items, i64 12), align 4, !tbaa !5
  tail call void @beginsert(i32 noundef %4)
  %5 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.items, i64 16), align 16, !tbaa !5
  tail call void @beginsert(i32 noundef %5)
  %6 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  tail call void @display()
  tail call void @deleteatpos()
  %7 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  tail call void @display()
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @beginsert(i32 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local void @deleteatpos() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @display() local_unnamed_addr #0

attributes #0 = { 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 #1 = { 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" }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass,TailCallElimPass