; LLVM IR from PaulBatchelor/sndkit :: graforge (graforge)

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

; 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: nounwind uwtable
declare dso_local void @gf_pointer_destroy(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @gf_pointer_get_next(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @gf_pointerlist_top(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @gf_pointerlist_free(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = call ptr @gf_pointerlist_top(ptr noundef %6)
  store ptr %7, ptr %5, align 8, !tbaa !5
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %18, %1
  %9 = load i32, ptr %3, align 4, !tbaa !9
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.gf_pointerlist, ptr %10, i32 0, i32 2
  %12 = load i32, ptr %11, align 8, !tbaa !11
  %13 = icmp ult i32 %9, %12
  br i1 %13, label %14, label %21

14:                                               ; preds = %8
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = call ptr @gf_pointer_get_next(ptr noundef %15)
  store ptr %16, ptr %4, align 8, !tbaa !5
  call void @gf_pointer_destroy(ptr noundef %5)
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %17, ptr %5, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %14
  %19 = load i32, ptr %3, align 4, !tbaa !9
  %20 = add i32 %19, 1
  store i32 %20, ptr %3, align 4, !tbaa !9
  br label %8, !llvm.loop !13

21:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"", !6, i64 0, !6, i64 8, !10, i64 16}
!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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

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

; Function Attrs: nounwind uwtable
declare dso_local void @gf_pointer_destroy(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @gf_pointer_get_next(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @gf_pointerlist_top(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @gf_pointerlist_free(ptr noundef %0) local_unnamed_addr #1 {
  %2 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #2
  %3 = tail call ptr @gf_pointerlist_top(ptr noundef %0)
  store ptr %3, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  %5 = load i32, ptr %4, align 8, !tbaa !9
  %.not = icmp eq i32 %5, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %.lr.ph
  %6 = phi ptr [ %7, %.lr.ph ], [ %3, %1 ]
  %.04 = phi i32 [ %8, %.lr.ph ], [ 0, %1 ]
  %7 = call ptr @gf_pointer_get_next(ptr noundef %6)
  call void @gf_pointer_destroy(ptr noundef nonnull %2)
  store ptr %7, ptr %2, align 8, !tbaa !5
  %8 = add nuw i32 %.04, 1
  %9 = load i32, ptr %4, align 8, !tbaa !9
  %10 = icmp ult i32 %8, %9
  br i1 %10, label %.lr.ph, label %._crit_edge, !llvm.loop !12

._crit_edge:                                      ; preds = %.lr.ph, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #2
  ret void
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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, !11, i64 16}
!10 = !{!"", !6, i64 0, !6, i64 8, !11, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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