; LLVM IR from marcobambini/gravity :: src/shared (gravity_hash)

; 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.gravity_hash_t = type { i32, i32, ptr, ptr, ptr, ptr, ptr, i32, i32 }
%struct.hash_node_s = type { i32, %struct.gravity_value_t, %struct.gravity_value_t, ptr }
%struct.gravity_value_t = type { ptr, %union.anon }
%union.anon = type { i64 }

; 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
define dso_local void @gravity_hash_iterate(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %15

12:                                               ; preds = %3
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = icmp ne ptr %13, null
  br i1 %14, label %16, label %15

15:                                               ; preds = %12, %3
  br label %65

16:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %17

17:                                               ; preds = %62, %16
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.gravity_hash_t, ptr %19, i32 0, i32 0
  %21 = load i32, ptr %20, align 8, !tbaa !11
  %22 = icmp ult i32 %18, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %17
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %65

24:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.gravity_hash_t, ptr %25, i32 0, i32 2
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = zext i32 %28 to i64
  %30 = getelementptr inbounds ptr, ptr %27, i64 %29
  %31 = load ptr, ptr %30, align 8, !tbaa !5
  store ptr %31, ptr %9, align 8, !tbaa !5
  %32 = load ptr, ptr %9, align 8, !tbaa !5
  %33 = icmp ne ptr %32, null
  br i1 %33, label %35, label %34

34:                                               ; preds = %24
  store i32 4, ptr %8, align 4
  br label %59

35:                                               ; preds = %24
  br label %36

36:                                               ; preds = %39, %35
  %37 = load ptr, ptr %9, align 8, !tbaa !5
  %38 = icmp ne ptr %37, null
  br i1 %38, label %39, label %58

39:                                               ; preds = %36
  %40 = load ptr, ptr %5, align 8, !tbaa !5
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = load ptr, ptr %9, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.hash_node_s, ptr %42, i32 0, i32 1
  %44 = load ptr, ptr %9, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.hash_node_s, ptr %44, i32 0, i32 2
  %46 = load ptr, ptr %6, align 8, !tbaa !5
  %47 = getelementptr inbounds { ptr, i64 }, ptr %43, i32 0, i32 0
  %48 = load ptr, ptr %47, align 8
  %49 = getelementptr inbounds { ptr, i64 }, ptr %43, i32 0, i32 1
  %50 = load i64, ptr %49, align 8
  %51 = getelementptr inbounds { ptr, i64 }, ptr %45, i32 0, i32 0
  %52 = load ptr, ptr %51, align 8
  %53 = getelementptr inbounds { ptr, i64 }, ptr %45, i32 0, i32 1
  %54 = load i64, ptr %53, align 8
  call void %40(ptr noundef %41, ptr %48, i64 %50, ptr %52, i64 %54, ptr noundef %46)
  %55 = load ptr, ptr %9, align 8, !tbaa !5
  %56 = getelementptr inbounds %struct.hash_node_s, ptr %55, i32 0, i32 3
  %57 = load ptr, ptr %56, align 8, !tbaa !14
  store ptr %57, ptr %9, align 8, !tbaa !5
  br label %36, !llvm.loop !17

58:                                               ; preds = %36
  store i32 0, ptr %8, align 4
  br label %59

59:                                               ; preds = %58, %34
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  %60 = load i32, ptr %8, align 4
  switch i32 %60, label %66 [
    i32 0, label %61
    i32 4, label %62
  ]

61:                                               ; preds = %59
  br label %62

62:                                               ; preds = %61, %59
  %63 = load i32, ptr %7, align 4, !tbaa !9
  %64 = add i32 %63, 1
  store i32 %64, ptr %7, align 4, !tbaa !9
  br label %17, !llvm.loop !19

65:                                               ; preds = %23, %15
  ret void

66:                                               ; preds = %59
  unreachable
}

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 0}
!12 = !{!"gravity_hash_t", !10, i64 0, !10, i64 4, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !10, i64 48, !10, i64 52}
!13 = !{!12, !6, i64 8}
!14 = !{!15, !6, i64 40}
!15 = !{!"hash_node_s", !10, i64 0, !16, i64 8, !16, i64 24, !6, i64 40}
!16 = !{!"", !6, i64 0, !7, i64 8}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}
!19 = distinct !{!19, !18}


; 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: nounwind uwtable
define dso_local void @gravity_hash_iterate(ptr noundef %0, ptr noundef readonly %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = icmp ne ptr %0, null
  %5 = icmp ne ptr %1, null
  %or.cond = and i1 %4, %5
  br i1 %or.cond, label %.preheader20, label %.loopexit21

.preheader20:                                     ; preds = %3
  %6 = load i32, ptr %0, align 8, !tbaa !5
  %.not24 = icmp eq i32 %6, 0
  br i1 %.not24, label %.loopexit21, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader20
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  br label %8

8:                                                ; preds = %.lr.ph, %.loopexit
  %9 = phi i32 [ %6, %.lr.ph ], [ %23, %.loopexit ]
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %.loopexit ]
  %10 = load ptr, ptr %7, align 8, !tbaa !11
  %11 = getelementptr inbounds ptr, ptr %10, i64 %indvars.iv
  %12 = load ptr, ptr %11, align 8, !tbaa !12
  %.not = icmp eq ptr %12, null
  br i1 %.not, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %8, %.preheader
  %.022 = phi ptr [ %22, %.preheader ], [ %12, %8 ]
  %13 = getelementptr inbounds i8, ptr %.022, i64 8
  %14 = getelementptr inbounds i8, ptr %.022, i64 24
  %15 = load ptr, ptr %13, align 8
  %16 = getelementptr inbounds i8, ptr %.022, i64 16
  %17 = load i64, ptr %16, align 8
  %18 = load ptr, ptr %14, align 8
  %19 = getelementptr inbounds i8, ptr %.022, i64 32
  %20 = load i64, ptr %19, align 8
  tail call void %1(ptr noundef nonnull %0, ptr %15, i64 %17, ptr %18, i64 %20, ptr noundef %2) #1
  %21 = getelementptr inbounds i8, ptr %.022, i64 40
  %22 = load ptr, ptr %21, align 8, !tbaa !13
  %.not19 = icmp eq ptr %22, null
  br i1 %.not19, label %.loopexit.loopexit, label %.preheader, !llvm.loop !16

.loopexit.loopexit:                               ; preds = %.preheader
  %.pre = load i32, ptr %0, align 8, !tbaa !5
  br label %.loopexit

.loopexit:                                        ; preds = %.loopexit.loopexit, %8
  %23 = phi i32 [ %.pre, %.loopexit.loopexit ], [ %9, %8 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %24 = zext i32 %23 to i64
  %25 = icmp ult i64 %indvars.iv.next, %24
  br i1 %25, label %8, label %.loopexit21, !llvm.loop !18

.loopexit21:                                      ; preds = %.loopexit, %.preheader20, %3
  ret void
}

attributes #0 = { 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 = { 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 = !{!"gravity_hash_t", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !7, i64 48, !7, i64 52}
!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 8}
!12 = !{!10, !10, i64 0}
!13 = !{!14, !10, i64 40}
!14 = !{!"hash_node_s", !7, i64 0, !15, i64 8, !15, i64 24, !10, i64 40}
!15 = !{!"", !10, i64 0, !8, i64 8}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}
!18 = distinct !{!18, !17}


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