; LLVM IR from cvitatma/DSA :: 09-Hashing (HashTable)

; 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.stHT = type { i32, ptr }
%struct.stNode = type { i32, [1000000 x i32], 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 uwtable
declare dso_local i32 @getHash(i32 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @DeleteElement(i32 noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  store i32 %0, ptr %3, align 4, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = load ptr, ptr %4, align 8, !tbaa !9
  %10 = call i32 @getHash(i32 noundef %8, ptr noundef %9)
  store i32 %10, ptr %5, align 4, !tbaa !5
  %11 = load ptr, ptr %4, align 8, !tbaa !9
  %12 = getelementptr inbounds %struct.stHT, ptr %11, i32 0, i32 1
  %13 = load ptr, ptr %12, align 8, !tbaa !11
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds ptr, ptr %13, i64 %15
  %17 = load ptr, ptr %16, align 8, !tbaa !9
  store ptr %17, ptr %6, align 8, !tbaa !9
  br label %18

18:                                               ; preds = %45, %2
  %19 = load ptr, ptr %6, align 8, !tbaa !9
  %20 = icmp ne ptr %19, null
  br i1 %20, label %21, label %49

21:                                               ; preds = %18
  %22 = load ptr, ptr %6, align 8, !tbaa !9
  %23 = getelementptr inbounds %struct.stNode, ptr %22, i32 0, i32 2
  %24 = load ptr, ptr %23, align 8, !tbaa !13
  %25 = icmp ne ptr %24, null
  br i1 %25, label %26, label %45

26:                                               ; preds = %21
  %27 = load ptr, ptr %6, align 8, !tbaa !9
  %28 = getelementptr inbounds %struct.stNode, ptr %27, i32 0, i32 2
  %29 = load ptr, ptr %28, align 8, !tbaa !13
  %30 = getelementptr inbounds %struct.stNode, ptr %29, i32 0, i32 0
  %31 = load i32, ptr %30, align 8, !tbaa !15
  %32 = load i32, ptr %3, align 4, !tbaa !5
  %33 = icmp eq i32 %31, %32
  br i1 %33, label %34, label %45

34:                                               ; preds = %26
  %35 = load ptr, ptr %6, align 8, !tbaa !9
  %36 = getelementptr inbounds %struct.stNode, ptr %35, i32 0, i32 2
  %37 = load ptr, ptr %36, align 8, !tbaa !13
  %38 = getelementptr inbounds %struct.stNode, ptr %37, i32 0, i32 2
  %39 = load ptr, ptr %38, align 8, !tbaa !13
  %40 = load ptr, ptr %6, align 8, !tbaa !9
  %41 = getelementptr inbounds %struct.stNode, ptr %40, i32 0, i32 2
  store ptr %39, ptr %41, align 8, !tbaa !13
  %42 = load ptr, ptr %6, align 8, !tbaa !9
  %43 = getelementptr inbounds %struct.stNode, ptr %42, i32 0, i32 2
  %44 = load ptr, ptr %43, align 8, !tbaa !13
  call void @free(ptr noundef %44) #3
  br label %45

45:                                               ; preds = %34, %26, %21
  %46 = load ptr, ptr %6, align 8, !tbaa !9
  %47 = getelementptr inbounds %struct.stNode, ptr %46, i32 0, i32 2
  %48 = load ptr, ptr %47, align 8, !tbaa !13
  store ptr %48, ptr %6, align 8, !tbaa !9
  br label %18, !llvm.loop !16

49:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret void
}

; Function Attrs: nounwind
declare void @free(ptr noundef) #2

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 "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"stHT", !6, i64 0, !10, i64 8}
!13 = !{!14, !10, i64 4000008}
!14 = !{!"stNode", !6, i64 0, !7, i64 4, !10, i64 4000008}
!15 = !{!14, !6, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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: nounwind uwtable
declare dso_local i32 @getHash(i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @DeleteElement(i32 noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @getHash(i32 noundef %0, ptr noundef %1)
  %4 = getelementptr inbounds i8, ptr %1, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = sext i32 %3 to i64
  %7 = getelementptr inbounds ptr, ptr %5, i64 %6
  %.013 = load ptr, ptr %7, align 8, !tbaa !11
  %.not14 = icmp eq ptr %.013, null
  br i1 %.not14, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %16
  %.015 = phi ptr [ %.0, %16 ], [ %.013, %2 ]
  %8 = getelementptr inbounds i8, ptr %.015, i64 4000008
  %9 = load ptr, ptr %8, align 8, !tbaa !11
  %.not12 = icmp eq ptr %9, null
  br i1 %.not12, label %._crit_edge, label %10

10:                                               ; preds = %.lr.ph
  %11 = load i32, ptr %9, align 8, !tbaa !12
  %12 = icmp eq i32 %11, %0
  br i1 %12, label %13, label %16

13:                                               ; preds = %10
  %14 = getelementptr inbounds i8, ptr %9, i64 4000008
  %15 = load ptr, ptr %14, align 8, !tbaa !14
  store ptr %15, ptr %8, align 8, !tbaa !14
  tail call void @free(ptr noundef %15) #2
  %.0.pre = load ptr, ptr %8, align 8, !tbaa !11
  br label %16

16:                                               ; preds = %13, %10
  %.0 = phi ptr [ %.0.pre, %13 ], [ %9, %10 ]
  %.not = icmp eq ptr %.0, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !15

._crit_edge:                                      ; preds = %.lr.ph, %16, %2
  ret void
}

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #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 = { 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 #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, !10, i64 8}
!6 = !{!"stHT", !7, i64 0, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!10, !10, i64 0}
!12 = !{!13, !7, i64 0}
!13 = !{!"stNode", !7, i64 0, !8, i64 4, !10, i64 4000008}
!14 = !{!13, !10, i64 4000008}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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