; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 10. Linked List/cpp/polynomialSumByLinkedList.ll (Z9insertEndRP4nodeii)

; 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"

%class.node = type { i32, i32, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9insertEndRP4nodeii(ptr noundef nonnull align 8 dereferenceable(8) %0, i32 noundef %1, i32 noundef %2) #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  %12 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #6
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = load i32, ptr %6, align 4, !tbaa !9
  invoke void @_ZN4nodeC2Eii(ptr noundef nonnull align 8 dereferenceable(16) %12, i32 noundef %13, i32 noundef %14)
          to label %15 unwind label %22

15:                                               ; preds = %3
  store ptr %12, ptr %7, align 8, !tbaa !5
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load ptr, ptr %16, align 8, !tbaa !5
  %18 = icmp eq ptr %17, null
  br i1 %18, label %19, label %26

19:                                               ; preds = %15
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %20, ptr %21, align 8, !tbaa !5
  store i32 1, ptr %10, align 4
  br label %42

22:                                               ; preds = %3
  %23 = landingpad { ptr, i32 }
          cleanup
  %24 = extractvalue { ptr, i32 } %23, 0
  store ptr %24, ptr %8, align 8
  %25 = extractvalue { ptr, i32 } %23, 1
  store i32 %25, ptr %9, align 4
  call void @_ZdlPvm(ptr noundef %12, i64 noundef 16) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  br label %43

26:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #5
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load ptr, ptr %27, align 8, !tbaa !5
  store ptr %28, ptr %11, align 8, !tbaa !5
  br label %29

29:                                               ; preds = %34, %26
  %30 = load ptr, ptr %11, align 8, !tbaa !5
  %31 = getelementptr inbounds %class.node, ptr %30, i32 0, i32 2
  %32 = load ptr, ptr %31, align 8, !tbaa !11
  %33 = icmp ne ptr %32, null
  br i1 %33, label %34, label %38

34:                                               ; preds = %29
  %35 = load ptr, ptr %11, align 8, !tbaa !5
  %36 = getelementptr inbounds %class.node, ptr %35, i32 0, i32 2
  %37 = load ptr, ptr %36, align 8, !tbaa !11
  store ptr %37, ptr %11, align 8, !tbaa !5
  br label %29, !llvm.loop !13

38:                                               ; preds = %29
  %39 = load ptr, ptr %7, align 8, !tbaa !5
  %40 = load ptr, ptr %11, align 8, !tbaa !5
  %41 = getelementptr inbounds %class.node, ptr %40, i32 0, i32 2
  store ptr %39, ptr %41, align 8, !tbaa !11
  store i32 1, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #5
  br label %42

42:                                               ; preds = %38, %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  ret void

43:                                               ; preds = %22
  %44 = load ptr, ptr %8, align 8
  %45 = load i32, ptr %9, align 4
  %46 = insertvalue { ptr, i32 } poison, ptr %44, 0
  %47 = insertvalue { ptr, i32 } %46, i32 %45, 1
  resume { ptr, i32 } %47
}

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

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4nodeC2Eii(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef, i32 noundef) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #4

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

attributes #0 = { mustprogress 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 = { nobuiltin allocsize(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 = { mustprogress 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 = { nobuiltin 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 #5 = { nounwind }
attributes #6 = { builtin allocsize(0) }
attributes #7 = { builtin 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"_ZTS4node", !10, i64 0, !10, i64 4, !6, i64 8}
!13 = distinct !{!13, !14}
!14 = !{!"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"

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9insertEndRP4nodeii(ptr nocapture noundef nonnull align 8 dereferenceable(8) %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %4 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #3
  tail call void @_ZN4nodeC2Eii(ptr noundef nonnull align 8 dereferenceable(16) %4, i32 noundef %1, i32 noundef %2)
  %5 = load ptr, ptr %0, align 8, !tbaa !5
  %6 = icmp eq ptr %5, null
  br i1 %6, label %11, label %.preheader

.preheader:                                       ; preds = %3, %.preheader
  %.0 = phi ptr [ %8, %.preheader ], [ %5, %3 ]
  %7 = getelementptr inbounds i8, ptr %.0, i64 8
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %.not = icmp eq ptr %8, null
  br i1 %.not, label %9, label %.preheader, !llvm.loop !12

9:                                                ; preds = %.preheader
  %10 = getelementptr inbounds i8, ptr %.0, i64 8
  br label %11

11:                                               ; preds = %3, %9
  %.sink = phi ptr [ %10, %9 ], [ %0, %3 ]
  store ptr %4, ptr %.sink, align 8, !tbaa !5
  ret void
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4nodeC2Eii(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef, i32 noundef) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

attributes #0 = { mustprogress 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 = { nobuiltin allocsize(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 #2 = { mustprogress 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 = { builtin allocsize(0) }

!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++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTS4node", !11, i64 0, !11, i64 4, !6, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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