; LLVM IR from attractivechaos/klib :: khmm (hmm_delete_data)

; 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.hmm_data_t = type { i32, i32, ptr, ptr, ptr, 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 @hmm_delete_data(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = icmp eq ptr %5, null
  br i1 %6, label %7, label %8

7:                                                ; preds = %1
  store i32 1, ptr %4, align 4
  br label %65

8:                                                ; preds = %1
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %42, %8
  %10 = load i32, ptr %3, align 4, !tbaa !9
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.hmm_data_t, ptr %11, i32 0, i32 0
  %13 = load i32, ptr %12, align 8, !tbaa !11
  %14 = icmp sle i32 %10, %13
  br i1 %14, label %15, label %45

15:                                               ; preds = %9
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.hmm_data_t, ptr %16, i32 0, i32 3
  %18 = load ptr, ptr %17, align 8, !tbaa !13
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %28

20:                                               ; preds = %15
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.hmm_data_t, ptr %21, i32 0, i32 3
  %23 = load ptr, ptr %22, align 8, !tbaa !13
  %24 = load i32, ptr %3, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds ptr, ptr %23, i64 %25
  %27 = load ptr, ptr %26, align 8, !tbaa !5
  call void @free(ptr noundef %27) #3
  br label %28

28:                                               ; preds = %20, %15
  %29 = load ptr, ptr %2, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.hmm_data_t, ptr %29, i32 0, i32 4
  %31 = load ptr, ptr %30, align 8, !tbaa !14
  %32 = icmp ne ptr %31, null
  br i1 %32, label %33, label %41

33:                                               ; preds = %28
  %34 = load ptr, ptr %2, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.hmm_data_t, ptr %34, i32 0, i32 4
  %36 = load ptr, ptr %35, align 8, !tbaa !14
  %37 = load i32, ptr %3, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds ptr, ptr %36, i64 %38
  %40 = load ptr, ptr %39, align 8, !tbaa !5
  call void @free(ptr noundef %40) #3
  br label %41

41:                                               ; preds = %33, %28
  br label %42

42:                                               ; preds = %41
  %43 = load i32, ptr %3, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %3, align 4, !tbaa !9
  br label %9, !llvm.loop !15

45:                                               ; preds = %9
  %46 = load ptr, ptr %2, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.hmm_data_t, ptr %46, i32 0, i32 3
  %48 = load ptr, ptr %47, align 8, !tbaa !13
  call void @free(ptr noundef %48) #3
  %49 = load ptr, ptr %2, align 8, !tbaa !5
  %50 = getelementptr inbounds %struct.hmm_data_t, ptr %49, i32 0, i32 4
  %51 = load ptr, ptr %50, align 8, !tbaa !14
  call void @free(ptr noundef %51) #3
  %52 = load ptr, ptr %2, align 8, !tbaa !5
  %53 = getelementptr inbounds %struct.hmm_data_t, ptr %52, i32 0, i32 5
  %54 = load ptr, ptr %53, align 8, !tbaa !17
  call void @free(ptr noundef %54) #3
  %55 = load ptr, ptr %2, align 8, !tbaa !5
  %56 = getelementptr inbounds %struct.hmm_data_t, ptr %55, i32 0, i32 6
  %57 = load ptr, ptr %56, align 8, !tbaa !18
  call void @free(ptr noundef %57) #3
  %58 = load ptr, ptr %2, align 8, !tbaa !5
  %59 = getelementptr inbounds %struct.hmm_data_t, ptr %58, i32 0, i32 7
  %60 = load ptr, ptr %59, align 8, !tbaa !19
  call void @free(ptr noundef %60) #3
  %61 = load ptr, ptr %2, align 8, !tbaa !5
  %62 = getelementptr inbounds %struct.hmm_data_t, ptr %61, i32 0, i32 2
  %63 = load ptr, ptr %62, align 8, !tbaa !20
  call void @free(ptr noundef %63) #3
  %64 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %64) #3
  store i32 0, ptr %4, align 4
  br label %65

65:                                               ; preds = %45, %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  %66 = load i32, ptr %4, align 4
  switch i32 %66, label %68 [
    i32 0, label %67
    i32 1, label %67
  ]

67:                                               ; preds = %65, %65
  ret void

68:                                               ; preds = %65
  unreachable
}

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 0}
!12 = !{!"", !10, i64 0, !10, i64 4, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48}
!13 = !{!12, !6, i64 16}
!14 = !{!12, !6, i64 24}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!12, !6, i64 32}
!18 = !{!12, !6, i64 40}
!19 = !{!12, !6, i64 48}
!20 = !{!12, !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"

; 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 @hmm_delete_data(ptr noundef %0) local_unnamed_addr #1 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %31, label %.preheader

.preheader:                                       ; preds = %1
  %3 = load i32, ptr %0, align 8, !tbaa !5
  %.not21 = icmp slt i32 %3, 0
  br i1 %.not21, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  %5 = getelementptr inbounds i8, ptr %0, i64 24
  br label %6

6:                                                ; preds = %.lr.ph, %16
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %16 ]
  %7 = load ptr, ptr %4, align 8, !tbaa !11
  %.not19 = icmp eq ptr %7, null
  br i1 %.not19, label %11, label %8

8:                                                ; preds = %6
  %9 = getelementptr inbounds ptr, ptr %7, i64 %indvars.iv
  %10 = load ptr, ptr %9, align 8, !tbaa !12
  tail call void @free(ptr noundef %10) #2
  br label %11

11:                                               ; preds = %8, %6
  %12 = load ptr, ptr %5, align 8, !tbaa !13
  %.not20 = icmp eq ptr %12, null
  br i1 %.not20, label %16, label %13

13:                                               ; preds = %11
  %14 = getelementptr inbounds ptr, ptr %12, i64 %indvars.iv
  %15 = load ptr, ptr %14, align 8, !tbaa !12
  tail call void @free(ptr noundef %15) #2
  br label %16

16:                                               ; preds = %11, %13
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %17 = load i32, ptr %0, align 8, !tbaa !5
  %18 = sext i32 %17 to i64
  %.not.not = icmp slt i64 %indvars.iv, %18
  br i1 %.not.not, label %6, label %._crit_edge, !llvm.loop !14

._crit_edge:                                      ; preds = %16, %.preheader
  %19 = getelementptr inbounds i8, ptr %0, i64 16
  %20 = load ptr, ptr %19, align 8, !tbaa !11
  tail call void @free(ptr noundef %20) #2
  %21 = getelementptr inbounds i8, ptr %0, i64 24
  %22 = load ptr, ptr %21, align 8, !tbaa !13
  tail call void @free(ptr noundef %22) #2
  %23 = getelementptr inbounds i8, ptr %0, i64 32
  %24 = load ptr, ptr %23, align 8, !tbaa !16
  tail call void @free(ptr noundef %24) #2
  %25 = getelementptr inbounds i8, ptr %0, i64 40
  %26 = load ptr, ptr %25, align 8, !tbaa !17
  tail call void @free(ptr noundef %26) #2
  %27 = getelementptr inbounds i8, ptr %0, i64 48
  %28 = load ptr, ptr %27, align 8, !tbaa !18
  tail call void @free(ptr noundef %28) #2
  %29 = getelementptr inbounds i8, ptr %0, i64 8
  %30 = load ptr, ptr %29, align 8, !tbaa !19
  tail call void @free(ptr noundef %30) #2
  tail call void @free(ptr noundef nonnull %0) #2
  br label %31

31:                                               ; preds = %1, %._crit_edge
  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, !7, i64 0}
!6 = !{!"", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 16}
!12 = !{!10, !10, i64 0}
!13 = !{!6, !10, i64 24}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = !{!6, !10, i64 32}
!17 = !{!6, !10, i64 40}
!18 = !{!6, !10, i64 48}
!19 = !{!6, !10, i64 8}


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