; LLVM IR from Wodnerstruck/CPP-Quantum-Chemistry-Practice :: Project1-Molecular-Geometry-Analysis/src/molecule.ll (ZN8MoleculeD2Ev)

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

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

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

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN8MoleculeD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) unnamed_addr #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %class.Molecule, ptr %4, i32 0, i32 2
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = icmp eq ptr %6, null
  br i1 %7, label %9, label %8

8:                                                ; preds = %1
  call void @_ZdaPv(ptr noundef %6) #3
  br label %9

9:                                                ; preds = %8, %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 0, ptr %3, align 4, !tbaa !12
  br label %10

10:                                               ; preds = %26, %9
  %11 = load i32, ptr %3, align 4, !tbaa !12
  %12 = getelementptr inbounds %class.Molecule, ptr %4, i32 0, i32 0
  %13 = load i32, ptr %12, align 8, !tbaa !13
  %14 = icmp slt i32 %11, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %29

16:                                               ; preds = %10
  %17 = getelementptr inbounds %class.Molecule, ptr %4, i32 0, i32 3
  %18 = load ptr, ptr %17, align 8, !tbaa !14
  %19 = load i32, ptr %3, align 4, !tbaa !12
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds ptr, ptr %18, i64 %20
  %22 = load ptr, ptr %21, align 8, !tbaa !5
  %23 = icmp eq ptr %22, null
  br i1 %23, label %25, label %24

24:                                               ; preds = %16
  call void @_ZdaPv(ptr noundef %22) #3
  br label %25

25:                                               ; preds = %24, %16
  br label %26

26:                                               ; preds = %25
  %27 = load i32, ptr %3, align 4, !tbaa !12
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %3, align 4, !tbaa !12
  br label %10, !llvm.loop !15

29:                                               ; preds = %15
  %30 = getelementptr inbounds %class.Molecule, ptr %4, i32 0, i32 3
  %31 = load ptr, ptr %30, align 8, !tbaa !14
  %32 = icmp eq ptr %31, null
  br i1 %32, label %34, label %33

33:                                               ; preds = %29
  call void @_ZdaPv(ptr noundef %31) #3
  br label %34

34:                                               ; preds = %33, %29
  ret void
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { builtin nounwind }
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++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTS8Molecule", !11, i64 0, !11, i64 4, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !11, i64 0}
!14 = !{!10, !6, i64 16}
!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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN8MoleculeD2Ev(ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %0) unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = icmp eq ptr %3, null
  br i1 %4, label %6, label %5

5:                                                ; preds = %1
  tail call void @_ZdaPv(ptr noundef nonnull %3) #2
  br label %6

6:                                                ; preds = %5, %1
  %7 = load i32, ptr %0, align 8, !tbaa !11
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %6
  %9 = getelementptr inbounds i8, ptr %0, i64 16
  br label %13

._crit_edge:                                      ; preds = %20, %6
  %10 = getelementptr inbounds i8, ptr %0, i64 16
  %11 = load ptr, ptr %10, align 8, !tbaa !12
  %12 = icmp eq ptr %11, null
  br i1 %12, label %25, label %24

13:                                               ; preds = %.lr.ph, %20
  %14 = phi i32 [ %7, %.lr.ph ], [ %21, %20 ]
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %20 ]
  %15 = load ptr, ptr %9, align 8, !tbaa !12
  %16 = getelementptr inbounds ptr, ptr %15, i64 %indvars.iv
  %17 = load ptr, ptr %16, align 8, !tbaa !13
  %18 = icmp eq ptr %17, null
  br i1 %18, label %20, label %19

19:                                               ; preds = %13
  tail call void @_ZdaPv(ptr noundef nonnull %17) #2
  %.pre = load i32, ptr %0, align 8, !tbaa !11
  br label %20

20:                                               ; preds = %13, %19
  %21 = phi i32 [ %14, %13 ], [ %.pre, %19 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %22 = sext i32 %21 to i64
  %23 = icmp slt i64 %indvars.iv.next, %22
  br i1 %23, label %13, label %._crit_edge, !llvm.loop !14

24:                                               ; preds = %._crit_edge
  tail call void @_ZdaPv(ptr noundef nonnull %11) #2
  br label %25

25:                                               ; preds = %24, %._crit_edge
  ret void
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(ptr noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { 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 #2 = { 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, !10, i64 8}
!6 = !{!"_ZTS8Molecule", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!6, !10, i64 16}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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