; LLVM IR from ryanlayer/giggle :: src (lists)

; 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.ordered_set = type { ptr, i32, i32, ptr, 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: nounwind
declare void @free(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @ordered_set_destroy(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = icmp ne ptr %6, null
  br i1 %7, label %8, label %29

8:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %25, %8
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.ordered_set, ptr %12, i32 0, i32 1
  %14 = load i32, ptr %13, align 8, !tbaa !11
  %15 = icmp ult i32 %10, %14
  br i1 %15, label %16, label %28

16:                                               ; preds = %9
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.ordered_set, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !13
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = zext i32 %22 to i64
  %24 = getelementptr inbounds ptr, ptr %21, i64 %23
  call void %17(ptr noundef %24)
  br label %25

25:                                               ; preds = %16
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = add i32 %26, 1
  store i32 %27, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !14

28:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %29

29:                                               ; preds = %28, %2
  %30 = load ptr, ptr %3, align 8, !tbaa !5
  %31 = load ptr, ptr %30, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.ordered_set, ptr %31, i32 0, i32 0
  %33 = load ptr, ptr %32, align 8, !tbaa !13
  call void @free(ptr noundef %33) #3
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = load ptr, ptr %34, align 8, !tbaa !5
  call void @free(ptr noundef %35) #3
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr null, ptr %36, align 8, !tbaa !5
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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, !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 8}
!12 = !{!"ordered_set", !6, i64 0, !10, i64 8, !10, i64 12, !6, i64 16, !6, i64 24, !6, i64 32}
!13 = !{!12, !6, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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 willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @ordered_set_destroy(ptr nocapture noundef %0, ptr noundef readonly %1) local_unnamed_addr #1 {
  %.not = icmp eq ptr %1, null
  %.pre = load ptr, ptr %0, align 8, !tbaa !5
  br i1 %.not, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2
  %3 = getelementptr inbounds i8, ptr %.pre, i64 8
  %4 = load i32, ptr %3, align 8, !tbaa !9
  %.not11 = icmp eq i32 %4, 0
  br i1 %.not11, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.preheader ]
  %5 = phi ptr [ %8, %.lr.ph ], [ %.pre, %.preheader ]
  %6 = load ptr, ptr %5, align 8, !tbaa !12
  %7 = getelementptr inbounds ptr, ptr %6, i64 %indvars.iv
  tail call void %1(ptr noundef %7) #2
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %8 = load ptr, ptr %0, align 8, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %8, i64 8
  %10 = load i32, ptr %9, align 8, !tbaa !9
  %11 = zext i32 %10 to i64
  %12 = icmp ult i64 %indvars.iv.next, %11
  br i1 %12, label %.lr.ph, label %.loopexit, !llvm.loop !13

.loopexit:                                        ; preds = %.lr.ph, %.preheader, %2
  %13 = phi ptr [ %.pre, %.preheader ], [ %.pre, %2 ], [ %8, %.lr.ph ]
  %14 = load ptr, ptr %13, align 8, !tbaa !12
  tail call void @free(ptr noundef %14) #2
  %15 = load ptr, ptr %0, align 8, !tbaa !5
  tail call void @free(ptr noundef %15) #2
  store ptr null, ptr %0, align 8, !tbaa !5
  ret void
}

attributes #0 = { 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 #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 8}
!10 = !{!"ordered_set", !6, i64 0, !11, i64 8, !11, i64 12, !6, i64 16, !6, i64 24, !6, i64 32}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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