; 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
declare dso_local zeroext i1 @gravity_hash_insert(ptr noundef, ptr, i64, ptr, i64) #1

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

8:                                                ; preds = %52, %2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.gravity_hash_t, ptr %10, i32 0, i32 0
  %12 = load i32, ptr %11, align 8, !tbaa !11
  %13 = icmp ult i32 %9, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %8
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %55

15:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.gravity_hash_t, ptr %16, i32 0, i32 2
  %18 = load ptr, ptr %17, align 8, !tbaa !13
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = zext i32 %19 to i64
  %21 = getelementptr inbounds ptr, ptr %18, i64 %20
  %22 = load ptr, ptr %21, align 8, !tbaa !5
  store ptr %22, ptr %7, align 8, !tbaa !5
  %23 = load ptr, ptr %7, align 8, !tbaa !5
  %24 = icmp ne ptr %23, null
  br i1 %24, label %26, label %25

25:                                               ; preds = %15
  store i32 4, ptr %6, align 4
  br label %49

26:                                               ; preds = %15
  br label %27

27:                                               ; preds = %30, %26
  %28 = load ptr, ptr %7, align 8, !tbaa !5
  %29 = icmp ne ptr %28, null
  br i1 %29, label %30, label %48

30:                                               ; preds = %27
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = load ptr, ptr %7, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.hash_node_s, ptr %32, i32 0, i32 1
  %34 = load ptr, ptr %7, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.hash_node_s, ptr %34, i32 0, i32 2
  %36 = getelementptr inbounds { ptr, i64 }, ptr %33, i32 0, i32 0
  %37 = load ptr, ptr %36, align 8
  %38 = getelementptr inbounds { ptr, i64 }, ptr %33, i32 0, i32 1
  %39 = load i64, ptr %38, align 8
  %40 = getelementptr inbounds { ptr, i64 }, ptr %35, i32 0, i32 0
  %41 = load ptr, ptr %40, align 8
  %42 = getelementptr inbounds { ptr, i64 }, ptr %35, i32 0, i32 1
  %43 = load i64, ptr %42, align 8
  %44 = call zeroext i1 @gravity_hash_insert(ptr noundef %31, ptr %37, i64 %39, ptr %41, i64 %43)
  %45 = load ptr, ptr %7, align 8, !tbaa !5
  %46 = getelementptr inbounds %struct.hash_node_s, ptr %45, i32 0, i32 3
  %47 = load ptr, ptr %46, align 8, !tbaa !14
  store ptr %47, ptr %7, align 8, !tbaa !5
  br label %27, !llvm.loop !17

48:                                               ; preds = %27
  store i32 0, ptr %6, align 4
  br label %49

49:                                               ; preds = %48, %25
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  %50 = load i32, ptr %6, align 4
  switch i32 %50, label %56 [
    i32 0, label %51
    i32 4, label %52
  ]

51:                                               ; preds = %49
  br label %52

52:                                               ; preds = %51, %49
  %53 = load i32, ptr %5, align 4, !tbaa !9
  %54 = add i32 %53, 1
  store i32 %54, ptr %5, align 4, !tbaa !9
  br label %8, !llvm.loop !19

55:                                               ; preds = %14
  ret void

56:                                               ; preds = %49
  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
declare dso_local zeroext i1 @gravity_hash_insert(ptr noundef, ptr, i64, ptr, i64) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @gravity_hash_append(ptr noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = load i32, ptr %1, align 8, !tbaa !5
  %.not15 = icmp eq i32 %3, 0
  br i1 %.not15, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %4 = getelementptr inbounds i8, ptr %1, i64 8
  br label %5

._crit_edge:                                      ; preds = %.loopexit, %2
  ret void

5:                                                ; preds = %.lr.ph, %.loopexit
  %6 = phi i32 [ %3, %.lr.ph ], [ %21, %.loopexit ]
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %.loopexit ]
  %7 = load ptr, ptr %4, align 8, !tbaa !11
  %8 = getelementptr inbounds ptr, ptr %7, i64 %indvars.iv
  %9 = load ptr, ptr %8, align 8, !tbaa !12
  %.not = icmp eq ptr %9, null
  br i1 %.not, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %5, %.preheader
  %.013 = phi ptr [ %20, %.preheader ], [ %9, %5 ]
  %10 = getelementptr inbounds i8, ptr %.013, i64 8
  %11 = getelementptr inbounds i8, ptr %.013, i64 24
  %12 = load ptr, ptr %10, align 8
  %13 = getelementptr inbounds i8, ptr %.013, i64 16
  %14 = load i64, ptr %13, align 8
  %15 = load ptr, ptr %11, align 8
  %16 = getelementptr inbounds i8, ptr %.013, i64 32
  %17 = load i64, ptr %16, align 8
  %18 = tail call zeroext i1 @gravity_hash_insert(ptr noundef %0, ptr %12, i64 %14, ptr %15, i64 %17)
  %19 = getelementptr inbounds i8, ptr %.013, i64 40
  %20 = load ptr, ptr %19, align 8, !tbaa !13
  %.not12 = icmp eq ptr %20, null
  br i1 %.not12, label %.loopexit.loopexit, label %.preheader, !llvm.loop !16

.loopexit.loopexit:                               ; preds = %.preheader
  %.pre = load i32, ptr %1, align 8, !tbaa !5
  br label %.loopexit

.loopexit:                                        ; preds = %.loopexit.loopexit, %5
  %21 = phi i32 [ %.pre, %.loopexit.loopexit ], [ %6, %5 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %22 = zext i32 %21 to i64
  %23 = icmp ult i64 %indvars.iv.next, %22
  br i1 %23, label %5, label %._crit_edge, !llvm.loop !18
}

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" }

!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