; LLVM IR from cruppstahl/upscaledb :: 3rdparty/libfor (for)

; 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"

; Function Attrs: nounwind uwtable
declare dso_local i32 @for_compressed_size_bits(i32 noundef, i32 noundef) #0

; 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

; Function Attrs: nounwind uwtable
define dso_local i32 @for_compressed_size_unsorted(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = icmp eq i32 %11, 0
  br i1 %12, label %13, label %14

13:                                               ; preds = %2
  store i32 0, ptr %3, align 4
  store i32 1, ptr %10, align 4
  br label %64

14:                                               ; preds = %2
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds i32, ptr %15, i64 0
  %17 = load i32, ptr %16, align 4, !tbaa !9
  store i32 %17, ptr %8, align 4, !tbaa !9
  %18 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %18, ptr %9, align 4, !tbaa !9
  store i32 1, ptr %6, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %52, %14
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = icmp ult i32 %20, %21
  br i1 %22, label %23, label %55

23:                                               ; preds = %19
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = zext i32 %25 to i64
  %27 = getelementptr inbounds i32, ptr %24, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !9
  %29 = load i32, ptr %8, align 4, !tbaa !9
  %30 = icmp ult i32 %28, %29
  br i1 %30, label %31, label %37

31:                                               ; preds = %23
  %32 = load ptr, ptr %4, align 8, !tbaa !5
  %33 = load i32, ptr %6, align 4, !tbaa !9
  %34 = zext i32 %33 to i64
  %35 = getelementptr inbounds i32, ptr %32, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !9
  store i32 %36, ptr %8, align 4, !tbaa !9
  br label %37

37:                                               ; preds = %31, %23
  %38 = load ptr, ptr %4, align 8, !tbaa !5
  %39 = load i32, ptr %6, align 4, !tbaa !9
  %40 = zext i32 %39 to i64
  %41 = getelementptr inbounds i32, ptr %38, i64 %40
  %42 = load i32, ptr %41, align 4, !tbaa !9
  %43 = load i32, ptr %9, align 4, !tbaa !9
  %44 = icmp ugt i32 %42, %43
  br i1 %44, label %45, label %51

45:                                               ; preds = %37
  %46 = load ptr, ptr %4, align 8, !tbaa !5
  %47 = load i32, ptr %6, align 4, !tbaa !9
  %48 = zext i32 %47 to i64
  %49 = getelementptr inbounds i32, ptr %46, i64 %48
  %50 = load i32, ptr %49, align 4, !tbaa !9
  store i32 %50, ptr %9, align 4, !tbaa !9
  br label %51

51:                                               ; preds = %45, %37
  br label %52

52:                                               ; preds = %51
  %53 = load i32, ptr %6, align 4, !tbaa !9
  %54 = add i32 %53, 1
  store i32 %54, ptr %6, align 4, !tbaa !9
  br label %19, !llvm.loop !11

55:                                               ; preds = %19
  %56 = load i32, ptr %9, align 4, !tbaa !9
  %57 = load i32, ptr %8, align 4, !tbaa !9
  %58 = sub i32 %56, %57
  %59 = call i32 @required_bits(i32 noundef %58)
  store i32 %59, ptr %7, align 4, !tbaa !9
  %60 = load i32, ptr %5, align 4, !tbaa !9
  %61 = load i32, ptr %7, align 4, !tbaa !9
  %62 = call i32 @for_compressed_size_bits(i32 noundef %60, i32 noundef %61)
  %63 = add i32 5, %62
  store i32 %63, ptr %3, align 4
  store i32 1, ptr %10, align 4
  br label %64

64:                                               ; preds = %55, %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  %65 = load i32, ptr %3, align 4
  ret i32 %65
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @required_bits(i32 noundef) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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 = distinct !{!11, !12}
!12 = !{!"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 @for_compressed_size_bits(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @for_compressed_size_unsorted(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq i32 %1, 0
  br i1 %3, label %22, label %4

4:                                                ; preds = %2
  %5 = load i32, ptr %0, align 4, !tbaa !5
  %.not = icmp eq i32 %1, 1
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %4
  %wide.trip.count = zext i32 %1 to i64
  %6 = add nsw i64 %wide.trip.count, -1
  %min.iters.check = icmp ult i32 %1, 9
  br i1 %min.iters.check, label %.lr.ph.preheader40, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %6, -8
  %ind.end = or disjoint i64 %n.vec, 1
  %minmax.ident.splatinsert = insertelement <4 x i32> poison, i32 %5, i64 0
  %minmax.ident.splat = shufflevector <4 x i32> %minmax.ident.splatinsert, <4 x i32> poison, <4 x i32> zeroinitializer
  %minmax.ident.splatinsert35 = insertelement <4 x i32> poison, i32 %5, i64 0
  %minmax.ident.splat36 = shufflevector <4 x i32> %minmax.ident.splatinsert35, <4 x i32> poison, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ %minmax.ident.splat, %vector.ph ], [ %11, %vector.body ]
  %vec.phi32 = phi <4 x i32> [ %minmax.ident.splat, %vector.ph ], [ %12, %vector.body ]
  %vec.phi33 = phi <4 x i32> [ %minmax.ident.splat36, %vector.ph ], [ %9, %vector.body ]
  %vec.phi34 = phi <4 x i32> [ %minmax.ident.splat36, %vector.ph ], [ %10, %vector.body ]
  %offset.idx = or disjoint i64 %index, 1
  %7 = getelementptr inbounds i32, ptr %0, i64 %offset.idx
  %8 = getelementptr inbounds i8, ptr %7, i64 16
  %wide.load = load <4 x i32>, ptr %7, align 4, !tbaa !5
  %wide.load37 = load <4 x i32>, ptr %8, align 4, !tbaa !5
  %9 = tail call <4 x i32> @llvm.umin.v4i32(<4 x i32> %wide.load, <4 x i32> %vec.phi33)
  %10 = tail call <4 x i32> @llvm.umin.v4i32(<4 x i32> %wide.load37, <4 x i32> %vec.phi34)
  %11 = tail call <4 x i32> @llvm.umax.v4i32(<4 x i32> %wide.load, <4 x i32> %vec.phi)
  %12 = tail call <4 x i32> @llvm.umax.v4i32(<4 x i32> %wide.load37, <4 x i32> %vec.phi32)
  %index.next = add nuw i64 %index, 8
  %13 = icmp eq i64 %index.next, %n.vec
  br i1 %13, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %rdx.minmax = tail call <4 x i32> @llvm.umax.v4i32(<4 x i32> %11, <4 x i32> %12)
  %14 = tail call i32 @llvm.vector.reduce.umax.v4i32(<4 x i32> %rdx.minmax)
  %rdx.minmax38 = tail call <4 x i32> @llvm.umin.v4i32(<4 x i32> %9, <4 x i32> %10)
  %15 = tail call i32 @llvm.vector.reduce.umin.v4i32(<4 x i32> %rdx.minmax38)
  %cmp.n = icmp eq i64 %6, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader40

.lr.ph.preheader40:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 1, %.lr.ph.preheader ], [ %ind.end, %middle.block ]
  %.029.ph = phi i32 [ %5, %.lr.ph.preheader ], [ %14, %middle.block ]
  %.02028.ph = phi i32 [ %5, %.lr.ph.preheader ], [ %15, %middle.block ]
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader40, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader40 ]
  %.029 = phi i32 [ %.1, %.lr.ph ], [ %.029.ph, %.lr.ph.preheader40 ]
  %.02028 = phi i32 [ %spec.select, %.lr.ph ], [ %.02028.ph, %.lr.ph.preheader40 ]
  %16 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %spec.select = tail call i32 @llvm.umin.i32(i32 %17, i32 %.02028)
  %.1 = tail call i32 @llvm.umax.i32(i32 %17, i32 %.029)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %4
  %.020.lcssa = phi i32 [ %5, %4 ], [ %15, %middle.block ], [ %spec.select, %.lr.ph ]
  %.0.lcssa = phi i32 [ %5, %4 ], [ %14, %middle.block ], [ %.1, %.lr.ph ]
  %18 = sub i32 %.0.lcssa, %.020.lcssa
  %19 = tail call i32 @required_bits(i32 noundef %18)
  %20 = tail call i32 @for_compressed_size_bits(i32 noundef %1, i32 noundef %19)
  %21 = add i32 %20, 5
  br label %22

22:                                               ; preds = %2, %._crit_edge
  %.022 = phi i32 [ %21, %._crit_edge ], [ 0, %2 ]
  ret i32 %.022
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @required_bits(i32 noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.umin.i32(i32, i32) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.umax.i32(i32, i32) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x i32> @llvm.umin.v4i32(<4 x i32>, <4 x i32>) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x i32> @llvm.umax.v4i32(<4 x i32>, <4 x i32>) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.umax.v4i32(<4 x i32>) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.umin.v4i32(<4 x i32>) #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 = { inlinehint 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass