; LLVM IR from dpt/Containers :: libraries/datastruct/hash/walk-internal.ll_hash (walk_internal)

; 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.hash = type { ptr, i32, i32, ptr, ptr, ptr, ptr, ptr }
%struct.hash__node = type { ptr, %struct.item }
%struct.item = type { ptr, i64, ptr }

; Function Attrs: nounwind uwtable
define dso_local i64 @hash__walk_internal(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca ptr, align 8
  %13 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = icmp eq ptr %14, null
  br i1 %15, label %16, label %17

16:                                               ; preds = %3
  store i64 0, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %62

17:                                               ; preds = %3
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %18

18:                                               ; preds = %58, %17
  %19 = load i32, ptr %9, align 4, !tbaa !9
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.hash, ptr %20, i32 0, i32 1
  %22 = load i32, ptr %21, align 8, !tbaa !11
  %23 = icmp slt i32 %19, %22
  br i1 %23, label %24, label %61

24:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #2
  store i32 0, ptr %11, align 4, !tbaa !9
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.hash, ptr %25, i32 0, i32 0
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  %28 = load i32, ptr %9, align 4, !tbaa !9
  %29 = sext 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 %12, align 8, !tbaa !5
  br label %32

32:                                               ; preds = %52, %24
  %33 = load ptr, ptr %12, align 8, !tbaa !5
  %34 = icmp ne ptr %33, null
  br i1 %34, label %35, label %54

35:                                               ; preds = %32
  %36 = load ptr, ptr %12, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.hash__node, ptr %36, i32 0, i32 0
  %38 = load ptr, ptr %37, align 8, !tbaa !14
  store ptr %38, ptr %13, align 8, !tbaa !5
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  %40 = load ptr, ptr %12, align 8, !tbaa !5
  %41 = load i32, ptr %9, align 4, !tbaa !9
  %42 = load i32, ptr %11, align 4, !tbaa !9
  %43 = load ptr, ptr %7, align 8, !tbaa !5
  %44 = call i64 %39(ptr noundef %40, i32 noundef %41, i32 noundef %42, ptr noundef %43)
  store i64 %44, ptr %8, align 8, !tbaa !18
  %45 = load i64, ptr %8, align 8, !tbaa !18
  %46 = icmp ne i64 %45, 0
  br i1 %46, label %47, label %49

47:                                               ; preds = %35
  %48 = load i64, ptr %8, align 8, !tbaa !18
  store i64 %48, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %55

49:                                               ; preds = %35
  %50 = load i32, ptr %11, align 4, !tbaa !9
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %11, align 4, !tbaa !9
  br label %52

52:                                               ; preds = %49
  %53 = load ptr, ptr %13, align 8, !tbaa !5
  store ptr %53, ptr %12, align 8, !tbaa !5
  br label %32, !llvm.loop !19

54:                                               ; preds = %32
  store i32 0, ptr %10, align 4
  br label %55

55:                                               ; preds = %54, %47
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  %56 = load i32, ptr %10, align 4
  switch i32 %56, label %62 [
    i32 0, label %57
  ]

57:                                               ; preds = %55
  br label %58

58:                                               ; preds = %57
  %59 = load i32, ptr %9, align 4, !tbaa !9
  %60 = add nsw i32 %59, 1
  store i32 %60, ptr %9, align 4, !tbaa !9
  br label %18, !llvm.loop !21

61:                                               ; preds = %18
  store i64 0, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %62

62:                                               ; preds = %61, %55, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  %63 = load i64, ptr %4, align 8
  ret i64 %63
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 8}
!12 = !{!"hash", !6, i64 0, !10, i64 8, !10, i64 12, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48}
!13 = !{!12, !6, i64 0}
!14 = !{!15, !6, i64 0}
!15 = !{!"hash__node", !6, i64 0, !16, i64 8}
!16 = !{!"item", !6, i64 0, !17, i64 8, !6, i64 16}
!17 = !{!"long", !7, i64 0}
!18 = !{!17, !17, i64 0}
!19 = distinct !{!19, !20}
!20 = !{!"llvm.loop.mustprogress"}
!21 = distinct !{!21, !20}


; 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 i64 @hash__walk_internal(ptr noundef readonly %0, ptr nocapture noundef readonly %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = icmp eq ptr %0, null
  br i1 %4, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %3
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = load i32, ptr %5, align 8, !tbaa !5
  %7 = icmp sgt i32 %6, 0
  br i1 %7, label %.lr.ph32, label %.loopexit

.lr.ph32:                                         ; preds = %.preheader, %._crit_edge
  %8 = phi i32 [ %17, %._crit_edge ], [ %6, %.preheader ]
  %indvars.iv = phi i64 [ %indvars.iv.next, %._crit_edge ], [ 0, %.preheader ]
  %9 = load ptr, ptr %0, align 8, !tbaa !11
  %10 = getelementptr inbounds ptr, ptr %9, i64 %indvars.iv
  %11 = load ptr, ptr %10, align 8, !tbaa !12
  %.not28 = icmp eq ptr %11, null
  br i1 %.not28, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %.lr.ph32
  %12 = trunc nuw nsw i64 %indvars.iv to i32
  br label %.lr.ph

13:                                               ; preds = %.lr.ph
  %14 = add nuw nsw i32 %.01929, 1
  %.not = icmp eq ptr %15, null
  br i1 %.not, label %._crit_edge.loopexit, label %.lr.ph, !llvm.loop !13

.lr.ph:                                           ; preds = %.lr.ph.preheader, %13
  %.01830 = phi ptr [ %15, %13 ], [ %11, %.lr.ph.preheader ]
  %.01929 = phi i32 [ %14, %13 ], [ 0, %.lr.ph.preheader ]
  %15 = load ptr, ptr %.01830, align 8, !tbaa !15
  %16 = tail call i64 %1(ptr noundef nonnull %.01830, i32 noundef %12, i32 noundef %.01929, ptr noundef %2) #1
  %.not24 = icmp eq i64 %16, 0
  br i1 %.not24, label %13, label %.loopexit

._crit_edge.loopexit:                             ; preds = %13
  %.pre = load i32, ptr %5, align 8, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.lr.ph32
  %17 = phi i32 [ %.pre, %._crit_edge.loopexit ], [ %8, %.lr.ph32 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %18 = sext i32 %17 to i64
  %19 = icmp slt i64 %indvars.iv.next, %18
  br i1 %19, label %.lr.ph32, label %.loopexit, !llvm.loop !19

.loopexit:                                        ; preds = %._crit_edge, %.lr.ph, %.preheader, %3
  %.2 = phi i64 [ 0, %3 ], [ 0, %.preheader ], [ %16, %.lr.ph ], [ 0, %._crit_edge ]
  ret i64 %.2
}

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, !10, i64 8}
!6 = !{!"hash", !7, i64 0, !10, i64 8, !10, i64 12, !7, i64 16, !7, i64 24, !7, i64 32, !7, i64 40, !7, i64 48}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!7, !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!16, !7, i64 0}
!16 = !{!"hash__node", !7, i64 0, !17, i64 8}
!17 = !{!"item", !7, i64 0, !18, i64 8, !7, i64 16}
!18 = !{!"long", !8, i64 0}
!19 = distinct !{!19, !14}


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