; LLVM IR from QUILL-PIC/Quill :: src/plist.ll (ZN14spatial_region5eraseER5plist)

; 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.plist = type { ptr, ptr }
%struct.particle = type { double, double, double, double, double, double, double, double, double, double, 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

declare void @_ZN14spatial_region15delete_particleEP8particleb(ptr noundef nonnull align 8 dereferenceable(608), ptr noundef, i1 noundef zeroext) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN14spatial_region5eraseER5plist(ptr noundef nonnull align 8 dereferenceable(608) %0, ptr noundef nonnull align 8 dereferenceable(16) %1) #2 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %class.plist, ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  store ptr %10, ptr %5, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %14, %2
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %20

14:                                               ; preds = %11
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.particle, ptr %15, i32 0, i32 11
  %17 = load ptr, ptr %16, align 8, !tbaa !11
  store ptr %17, ptr %6, align 8, !tbaa !5
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZN14spatial_region15delete_particleEP8particleb(ptr noundef nonnull align 8 dereferenceable(608) %7, ptr noundef %18, i1 noundef zeroext false)
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %19, ptr %5, align 8, !tbaa !5
  br label %11, !llvm.loop !15

20:                                               ; preds = %11
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %class.plist, ptr %21, i32 0, i32 0
  store ptr null, ptr %22, align 8, !tbaa !9
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %class.plist, ptr %23, i32 0, i32 1
  store ptr null, ptr %24, align 8, !tbaa !17
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { 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 0}
!10 = !{!"_ZTS5plist", !6, i64 0, !6, i64 8}
!11 = !{!12, !6, i64 88}
!12 = !{!"_ZTS8particle", !13, i64 0, !13, i64 8, !13, i64 16, !13, i64 24, !13, i64 32, !13, i64 40, !13, i64 48, !13, i64 56, !13, i64 64, !13, i64 72, !14, i64 80, !6, i64 88, !6, i64 96}
!13 = !{!"double", !7, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!10, !6, i64 8}


; 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"

declare void @_ZN14spatial_region15delete_particleEP8particleb(ptr noundef nonnull align 8 dereferenceable(608), ptr noundef, i1 noundef zeroext) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN14spatial_region5eraseER5plist(ptr noundef nonnull align 8 dereferenceable(608) %0, ptr nocapture noundef nonnull align 8 dereferenceable(16) %1) local_unnamed_addr #1 align 2 {
  %3 = load ptr, ptr %1, align 8, !tbaa !5
  %.not8 = icmp eq ptr %3, null
  br i1 %.not8, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.09 = phi ptr [ %5, %.lr.ph ], [ %3, %2 ]
  %4 = getelementptr inbounds i8, ptr %.09, i64 88
  %5 = load ptr, ptr %4, align 8, !tbaa !10
  tail call void @_ZN14spatial_region15delete_particleEP8particleb(ptr noundef nonnull align 8 dereferenceable(608) %0, ptr noundef nonnull %.09, i1 noundef zeroext false)
  %.not = icmp eq ptr %5, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !14

._crit_edge:                                      ; preds = %.lr.ph, %2
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %1, i8 0, i64 16, i1 false)
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

attributes #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 = { 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 #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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 = !{!"_ZTS5plist", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!11, !7, i64 88}
!11 = !{!"_ZTS8particle", !12, i64 0, !12, i64 8, !12, i64 16, !12, i64 24, !12, i64 32, !12, i64 40, !12, i64 48, !12, i64 56, !12, i64 64, !12, i64 72, !13, i64 80, !7, i64 88, !7, i64 96}
!12 = !{!"double", !8, i64 0}
!13 = !{!"int", !8, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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