; LLVM IR from mstern98/Collision-Physics-Engine :: src/DataTypes (LinkedList)

; 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.LinkedList = type { ptr, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local ptr @ll_delete(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %7 = load ptr, ptr %5, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.LinkedList, ptr %7, i32 0, i32 0
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  %10 = icmp eq ptr %9, null
  br i1 %10, label %11, label %12

11:                                               ; preds = %2
  store ptr null, ptr %3, align 8
  br label %36

12:                                               ; preds = %2
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.LinkedList, ptr %13, i32 0, i32 0
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = call i32 @equals(ptr noundef %15, ptr noundef %16)
  %18 = icmp ne i32 %17, 0
  br i1 %18, label %19, label %30

19:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.LinkedList, ptr %20, i32 0, i32 0
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  store ptr %22, ptr %6, align 8, !tbaa !5
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.LinkedList, ptr %23, i32 0, i32 0
  %25 = load ptr, ptr %24, align 8, !tbaa !9
  call void @free(ptr noundef %25) #4
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.LinkedList, ptr %26, i32 0, i32 2
  %28 = load ptr, ptr %27, align 8, !tbaa !11
  store ptr %28, ptr %5, align 8, !tbaa !5
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %29, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %36

30:                                               ; preds = %12
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.LinkedList, ptr %32, i32 0, i32 2
  %34 = load ptr, ptr %33, align 8, !tbaa !11
  %35 = call ptr @ll_delete(ptr noundef %31, ptr noundef %34)
  store ptr %35, ptr %3, align 8
  br label %36

36:                                               ; preds = %30, %19, %11
  %37 = load ptr, ptr %3, align 8
  ret ptr %37
}

declare i32 @equals(ptr noundef, ptr 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: nounwind
declare void @free(ptr noundef) #3

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

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 = { "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 "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, !6, i64 0}
!10 = !{!"LinkedList", !6, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!10, !6, i64 16}


; 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: nounwind uwtable
define dso_local noundef ptr @ll_delete(ptr noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %1, align 8, !tbaa !5
  %4 = icmp eq ptr %3, null
  br i1 %4, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %2, %tailrecurse
  %5 = phi ptr [ %11, %tailrecurse ], [ %3, %2 ]
  %.tr1113 = phi ptr [ %10, %tailrecurse ], [ %1, %2 ]
  %6 = tail call i32 @equals(ptr noundef nonnull %5, ptr noundef %0) #3
  %.not = icmp eq i32 %6, 0
  br i1 %.not, label %tailrecurse, label %7

7:                                                ; preds = %.lr.ph
  %8 = load ptr, ptr %.tr1113, align 8, !tbaa !5
  tail call void @free(ptr noundef %8) #3
  br label %.loopexit

tailrecurse:                                      ; preds = %.lr.ph
  %9 = getelementptr inbounds i8, ptr %.tr1113, i64 16
  %10 = load ptr, ptr %9, align 8, !tbaa !10
  %11 = load ptr, ptr %10, align 8, !tbaa !5
  %12 = icmp eq ptr %11, null
  br i1 %12, label %.loopexit, label %.lr.ph

.loopexit:                                        ; preds = %tailrecurse, %2, %7
  %.0 = phi ptr [ %8, %7 ], [ null, %2 ], [ null, %tailrecurse ]
  ret ptr %.0
}

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

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

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 = { "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 willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { 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, !7, i64 0}
!6 = !{!"LinkedList", !7, i64 0, !7, i64 8, !7, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 16}


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