; LLVM IR from jrouwe/JoltPhysics :: Jolt/Geometry/ConvexHullBuilder2D.ll (ZN3JPH19ConvexHullBuilder2D9FreeEdgesEv)

; 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.JPH::ConvexHullBuilder2D" = type <{ ptr, ptr, i32, [4 x i8] }>
%"class.JPH::ConvexHullBuilder2D::Edge" = type { %"class.JPH::Vec3", %"class.JPH::Vec3", %"class.JPH::Array", ptr, ptr, i32, float }
%"class.JPH::Vec3" = type { %union.anon }
%union.anon = type { <4 x float> }
%"class.JPH::Array" = type { i64, i64, 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 @_ZN3JPH19ConvexHullBuilder2D9FreeEdgesEv(ptr noundef nonnull align 8 dereferenceable(20) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  %6 = getelementptr inbounds %"class.JPH::ConvexHullBuilder2D", ptr %5, i32 0, i32 1
  %7 = load ptr, ptr %6, align 8, !tbaa !9
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %10

9:                                                ; preds = %1
  br label %30

10:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %11 = getelementptr inbounds %"class.JPH::ConvexHullBuilder2D", ptr %5, i32 0, i32 1
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  store ptr %12, ptr %3, align 8, !tbaa !5
  br label %13

13:                                               ; preds = %22, %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = getelementptr inbounds %"class.JPH::ConvexHullBuilder2D::Edge", ptr %14, i32 0, i32 4
  %16 = load ptr, ptr %15, align 16, !tbaa !12
  store ptr %16, ptr %4, align 8, !tbaa !5
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = icmp eq ptr %17, null
  br i1 %18, label %20, label %19

19:                                               ; preds = %13
  call void @_ZN3JPH19ConvexHullBuilder2D4EdgeD2Ev(ptr noundef nonnull align 16 dereferenceable(80) %17) #4
  call void @_ZN3JPH19ConvexHullBuilder2D4EdgedlEPv(ptr noundef %17) #4
  br label %20

20:                                               ; preds = %19, %13
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %21, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  br label %22

22:                                               ; preds = %20
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = getelementptr inbounds %"class.JPH::ConvexHullBuilder2D", ptr %5, i32 0, i32 1
  %25 = load ptr, ptr %24, align 8, !tbaa !9
  %26 = icmp ne ptr %23, %25
  br i1 %26, label %13, label %27, !llvm.loop !18

27:                                               ; preds = %22
  %28 = getelementptr inbounds %"class.JPH::ConvexHullBuilder2D", ptr %5, i32 0, i32 1
  store ptr null, ptr %28, align 8, !tbaa !9
  %29 = getelementptr inbounds %"class.JPH::ConvexHullBuilder2D", ptr %5, i32 0, i32 2
  store i32 0, ptr %29, align 8, !tbaa !20
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  br label %30

30:                                               ; preds = %27, %9
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3JPH19ConvexHullBuilder2D4EdgeD2Ev(ptr noundef nonnull align 16 dereferenceable(80)) unnamed_addr #2 align 2

; Function Attrs: alwaysinline mustprogress nounwind uwtable
declare dso_local void @_ZN3JPH19ConvexHullBuilder2D4EdgedlEPv(ptr noundef) #3 align 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 = { inlinehint 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 = { alwaysinline 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 = { 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 = !{!"_ZTSN3JPH19ConvexHullBuilder2DE", !6, i64 0, !6, i64 8, !11, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !6, i64 64}
!13 = !{!"_ZTSN3JPH19ConvexHullBuilder2D4EdgeE", !14, i64 0, !14, i64 16, !15, i64 32, !6, i64 56, !6, i64 64, !11, i64 72, !17, i64 76}
!14 = !{!"_ZTSN3JPH4Vec3E", !7, i64 0}
!15 = !{!"_ZTSN3JPH5ArrayIiNS_12STLAllocatorIiEEEE", !16, i64 0, !16, i64 8, !6, i64 16}
!16 = !{!"long", !7, i64 0}
!17 = !{!"float", !7, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}
!20 = !{!10, !11, 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: mustprogress nounwind uwtable
define dso_local void @_ZN3JPH19ConvexHullBuilder2D9FreeEdgesEv(ptr nocapture noundef nonnull align 8 dereferenceable(20) %0) local_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 %10, label %.preheader

.preheader:                                       ; preds = %1, %.preheader
  %.0 = phi ptr [ %6, %.preheader ], [ %3, %1 ]
  %5 = getelementptr inbounds i8, ptr %.0, i64 64
  %6 = load ptr, ptr %5, align 16, !tbaa !11
  tail call void @_ZN3JPH19ConvexHullBuilder2D4EdgeD2Ev(ptr noundef nonnull align 16 dereferenceable(80) %.0) #3
  tail call void @_ZN3JPH19ConvexHullBuilder2D4EdgedlEPv(ptr noundef nonnull %.0) #3
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %.not = icmp eq ptr %6, %7
  br i1 %.not, label %8, label %.preheader, !llvm.loop !17

8:                                                ; preds = %.preheader
  store ptr null, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %0, i64 16
  store i32 0, ptr %9, align 8, !tbaa !19
  br label %10

10:                                               ; preds = %1, %8
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3JPH19ConvexHullBuilder2D4EdgeD2Ev(ptr noundef nonnull align 16 dereferenceable(80)) unnamed_addr #1 align 2

; Function Attrs: alwaysinline mustprogress nounwind uwtable
declare dso_local void @_ZN3JPH19ConvexHullBuilder2D4EdgedlEPv(ptr noundef) local_unnamed_addr #2 align 2

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 = { inlinehint 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 = { alwaysinline 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 = { 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 8}
!6 = !{!"_ZTSN3JPH19ConvexHullBuilder2DE", !7, i64 0, !7, i64 8, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!12, !7, i64 64}
!12 = !{!"_ZTSN3JPH19ConvexHullBuilder2D4EdgeE", !13, i64 0, !13, i64 16, !14, i64 32, !7, i64 56, !7, i64 64, !10, i64 72, !16, i64 76}
!13 = !{!"_ZTSN3JPH4Vec3E", !8, i64 0}
!14 = !{!"_ZTSN3JPH5ArrayIiNS_12STLAllocatorIiEEEE", !15, i64 0, !15, i64 8, !7, i64 16}
!15 = !{!"long", !8, i64 0}
!16 = !{!"float", !8, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}
!19 = !{!6, !10, i64 16}


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