; LLVM IR from fwip/fastqz :: libzpaq.ll (ZN7libzpaq7Decoder10decompressEv)

; 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"

%"class.libzpaq::Decoder" = type { ptr, i32, i32, i32, [4 x i8], %"class.libzpaq::Predictor", %"class.libzpaq::Array.4" }
%"class.libzpaq::Predictor" = type <{ i32, i32, [256 x i32], [256 x i32], ptr, [256 x %"struct.libzpaq::Component"], [256 x i32], [1024 x i32], [4096 x i16], [32768 x i16], %"class.libzpaq::StateTable", ptr, i32, [4 x i8] }>
%"struct.libzpaq::Component" = type { i64, i64, i64, i64, i64, %"class.libzpaq::Array", %"class.libzpaq::Array.0", %"class.libzpaq::Array.2" }
%"class.libzpaq::Array" = type <{ ptr, i64, i32, [4 x i8] }>
%"class.libzpaq::Array.0" = type <{ ptr, i64, i32, [4 x i8] }>
%"class.libzpaq::Array.2" = type <{ ptr, i64, i32, [4 x i8] }>
%"class.libzpaq::StateTable" = type { [1024 x i8] }
%"class.libzpaq::Array.4" = type <{ ptr, i64, i32, [4 x i8] }>

@.str.27 = external hidden unnamed_addr constant [23 x i8], align 1

; 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

declare void @_ZN7libzpaq5errorEPKc(ptr noundef) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZN7libzpaq5ArrayIcEixEm(ptr noundef nonnull align 8 dereferenceable(20), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN7libzpaq9Predictor9isModeledEv(ptr noundef nonnull align 8 dereferenceable(110620)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7libzpaq7Decoder7loadbufEv(ptr noundef nonnull align 8 dereferenceable(110672)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN7libzpaq7Decoder6decodeEi(ptr noundef nonnull align 8 dereferenceable(110672), i32 noundef) #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN7libzpaq7Decoder10decompressEv(ptr noundef nonnull align 8 dereferenceable(110672) %0) #3 align 2 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8
  %8 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 5
  %9 = call noundef zeroext i1 @_ZN7libzpaq9Predictor9isModeledEv(ptr noundef nonnull align 8 dereferenceable(110620) %8)
  br i1 %9, label %10, label %65

10:                                               ; preds = %1
  %11 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 3
  %12 = load i32, ptr %11, align 8, !tbaa !9
  %13 = icmp eq i32 %12, 0
  br i1 %13, label %14, label %35

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 0, ptr %4, align 4, !tbaa !16
  br label %15

15:                                               ; preds = %31, %14
  %16 = load i32, ptr %4, align 4, !tbaa !16
  %17 = icmp slt i32 %16, 4
  br i1 %17, label %19, label %18

18:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  br label %34

19:                                               ; preds = %15
  %20 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 3
  %21 = load i32, ptr %20, align 8, !tbaa !9
  %22 = shl i32 %21, 8
  %23 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !17
  %25 = load ptr, ptr %24, align 8, !tbaa !18
  %26 = getelementptr inbounds ptr, ptr %25, i64 0
  %27 = load ptr, ptr %26, align 8
  %28 = call noundef i32 %27(ptr noundef nonnull align 8 dereferenceable(8) %24)
  %29 = or i32 %22, %28
  %30 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 3
  store i32 %29, ptr %30, align 8, !tbaa !9
  br label %31

31:                                               ; preds = %19
  %32 = load i32, ptr %4, align 4, !tbaa !16
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %4, align 4, !tbaa !16
  br label %15, !llvm.loop !20

34:                                               ; preds = %18
  br label %35

35:                                               ; preds = %34, %10
  %36 = call noundef i32 @_ZN7libzpaq7Decoder6decodeEi(ptr noundef nonnull align 8 dereferenceable(110672) %7, i32 noundef 0)
  %37 = icmp ne i32 %36, 0
  br i1 %37, label %38, label %44

38:                                               ; preds = %35
  %39 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 3
  %40 = load i32, ptr %39, align 8, !tbaa !9
  %41 = icmp ne i32 %40, 0
  br i1 %41, label %42, label %43

42:                                               ; preds = %38
  call void @_ZN7libzpaq5errorEPKc(ptr noundef @.str.27)
  br label %43

43:                                               ; preds = %42, %38
  store i32 -1, ptr %2, align 4
  br label %89

44:                                               ; preds = %35
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 1, ptr %5, align 4, !tbaa !16
  br label %45

45:                                               ; preds = %48, %44
  %46 = load i32, ptr %5, align 4, !tbaa !16
  %47 = icmp slt i32 %46, 256
  br i1 %47, label %48, label %62

48:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %49 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 5
  %50 = call noundef i32 @_ZN7libzpaq9Predictor7predictEv(ptr noundef nonnull align 8 dereferenceable(110620) %49)
  %51 = mul nsw i32 %50, 2
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %6, align 4, !tbaa !16
  %53 = load i32, ptr %5, align 4, !tbaa !16
  %54 = load i32, ptr %6, align 4, !tbaa !16
  %55 = call noundef i32 @_ZN7libzpaq7Decoder6decodeEi(ptr noundef nonnull align 8 dereferenceable(110672) %7, i32 noundef %54)
  %56 = add nsw i32 %53, %55
  %57 = load i32, ptr %5, align 4, !tbaa !16
  %58 = add nsw i32 %57, %56
  store i32 %58, ptr %5, align 4, !tbaa !16
  %59 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 5
  %60 = load i32, ptr %5, align 4, !tbaa !16
  %61 = and i32 %60, 1
  call void @_ZN7libzpaq9Predictor6updateEi(ptr noundef nonnull align 8 dereferenceable(110620) %59, i32 noundef %61)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %45, !llvm.loop !22

62:                                               ; preds = %45
  %63 = load i32, ptr %5, align 4, !tbaa !16
  %64 = sub nsw i32 %63, 256
  store i32 %64, ptr %2, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %89

65:                                               ; preds = %1
  %66 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 1
  %67 = load i32, ptr %66, align 8, !tbaa !23
  %68 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 2
  %69 = load i32, ptr %68, align 4, !tbaa !24
  %70 = icmp eq i32 %67, %69
  br i1 %70, label %71, label %72

71:                                               ; preds = %65
  call void @_ZN7libzpaq7Decoder7loadbufEv(ptr noundef nonnull align 8 dereferenceable(110672) %7)
  br label %72

72:                                               ; preds = %71, %65
  %73 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 1
  %74 = load i32, ptr %73, align 8, !tbaa !23
  %75 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 2
  %76 = load i32, ptr %75, align 4, !tbaa !24
  %77 = icmp eq i32 %74, %76
  br i1 %77, label %78, label %79

78:                                               ; preds = %72
  store i32 -1, ptr %2, align 4
  br label %89

79:                                               ; preds = %72
  %80 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 6
  %81 = getelementptr inbounds %"class.libzpaq::Decoder", ptr %7, i32 0, i32 1
  %82 = load i32, ptr %81, align 8, !tbaa !23
  %83 = add i32 %82, 1
  store i32 %83, ptr %81, align 8, !tbaa !23
  %84 = zext i32 %82 to i64
  %85 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZN7libzpaq5ArrayIcEixEm(ptr noundef nonnull align 8 dereferenceable(20) %80, i64 noundef %84)
  %86 = load i8, ptr %85, align 1, !tbaa !25
  %87 = sext i8 %86 to i32
  %88 = and i32 %87, 255
  store i32 %88, ptr %2, align 4
  br label %89

89:                                               ; preds = %79, %78, %62, %43
  %90 = load i32, ptr %2, align 4
  ret i32 %90
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN7libzpaq9Predictor7predictEv(ptr noundef nonnull align 8 dereferenceable(110620)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7libzpaq9Predictor6updateEi(ptr noundef nonnull align 8 dereferenceable(110620), i32 noundef) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 = { mustprogress 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 = { mustprogress 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 #4 = { 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++ TBAA"}
!9 = !{!10, !11, i64 16}
!10 = !{!"_ZTSN7libzpaq7DecoderE", !6, i64 0, !11, i64 8, !11, i64 12, !11, i64 16, !12, i64 24, !14, i64 110648}
!11 = !{!"int", !7, i64 0}
!12 = !{!"_ZTSN7libzpaq9PredictorE", !11, i64 0, !11, i64 4, !7, i64 8, !7, i64 1032, !6, i64 2056, !7, i64 2064, !7, i64 30736, !7, i64 31760, !7, i64 35856, !7, i64 44048, !13, i64 109584, !6, i64 110608, !11, i64 110616}
!13 = !{!"_ZTSN7libzpaq10StateTableE", !7, i64 0}
!14 = !{!"_ZTSN7libzpaq5ArrayIcEE", !6, i64 0, !15, i64 8, !11, i64 16}
!15 = !{!"long", !7, i64 0}
!16 = !{!11, !11, i64 0}
!17 = !{!10, !6, i64 0}
!18 = !{!19, !19, i64 0}
!19 = !{!"vtable pointer", !8, i64 0}
!20 = distinct !{!20, !21}
!21 = !{!"llvm.loop.mustprogress"}
!22 = distinct !{!22, !21}
!23 = !{!10, !11, i64 8}
!24 = !{!10, !11, i64 12}
!25 = !{!7, !7, i64 0}


; 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"

@.str.27 = external hidden unnamed_addr constant [23 x i8], align 1

declare void @_ZN7libzpaq5errorEPKc(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZN7libzpaq5ArrayIcEixEm(ptr noundef nonnull align 8 dereferenceable(20), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN7libzpaq9Predictor9isModeledEv(ptr noundef nonnull align 8 dereferenceable(110620)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7libzpaq7Decoder7loadbufEv(ptr noundef nonnull align 8 dereferenceable(110672)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN7libzpaq7Decoder6decodeEi(ptr noundef nonnull align 8 dereferenceable(110672), i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef range(i32 -1, 2147483392) i32 @_ZN7libzpaq7Decoder10decompressEv(ptr noundef nonnull align 8 dereferenceable(110672) %0) local_unnamed_addr #2 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 24
  %3 = tail call noundef zeroext i1 @_ZN7libzpaq9Predictor9isModeledEv(ptr noundef nonnull align 8 dereferenceable(110620) %2)
  br i1 %3, label %4, label %43

4:                                                ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = load i32, ptr %5, align 8, !tbaa !5
  %7 = icmp eq i32 %6, 0
  br i1 %7, label %.preheader13.preheader, label %.loopexit

.preheader13.preheader:                           ; preds = %4
  %8 = load ptr, ptr %0, align 8, !tbaa !15
  %9 = load ptr, ptr %8, align 8, !tbaa !16
  %10 = load ptr, ptr %9, align 8
  %11 = tail call noundef i32 %10(ptr noundef nonnull align 8 dereferenceable(8) %8)
  store i32 %11, ptr %5, align 8, !tbaa !5
  %12 = shl i32 %11, 8
  %13 = load ptr, ptr %0, align 8, !tbaa !15
  %14 = load ptr, ptr %13, align 8, !tbaa !16
  %15 = load ptr, ptr %14, align 8
  %16 = tail call noundef i32 %15(ptr noundef nonnull align 8 dereferenceable(8) %13)
  %17 = or i32 %16, %12
  store i32 %17, ptr %5, align 8, !tbaa !5
  %18 = shl i32 %17, 8
  %19 = load ptr, ptr %0, align 8, !tbaa !15
  %20 = load ptr, ptr %19, align 8, !tbaa !16
  %21 = load ptr, ptr %20, align 8
  %22 = tail call noundef i32 %21(ptr noundef nonnull align 8 dereferenceable(8) %19)
  %23 = or i32 %22, %18
  store i32 %23, ptr %5, align 8, !tbaa !5
  %24 = shl i32 %23, 8
  %25 = load ptr, ptr %0, align 8, !tbaa !15
  %26 = load ptr, ptr %25, align 8, !tbaa !16
  %27 = load ptr, ptr %26, align 8
  %28 = tail call noundef i32 %27(ptr noundef nonnull align 8 dereferenceable(8) %25)
  %29 = or i32 %28, %24
  store i32 %29, ptr %5, align 8, !tbaa !5
  br label %.loopexit

.loopexit:                                        ; preds = %.preheader13.preheader, %4
  %30 = tail call noundef i32 @_ZN7libzpaq7Decoder6decodeEi(ptr noundef nonnull align 8 dereferenceable(110672) %0, i32 noundef 0)
  %.not = icmp eq i32 %30, 0
  br i1 %.not, label %.preheader, label %31

31:                                               ; preds = %.loopexit
  %32 = load i32, ptr %5, align 8, !tbaa !5
  %.not12 = icmp eq i32 %32, 0
  br i1 %.not12, label %61, label %33

33:                                               ; preds = %31
  tail call void @_ZN7libzpaq5errorEPKc(ptr noundef nonnull @.str.27)
  br label %61

.preheader:                                       ; preds = %.loopexit, %.preheader
  %.0915 = phi i32 [ %38, %.preheader ], [ 1, %.loopexit ]
  %34 = tail call noundef i32 @_ZN7libzpaq9Predictor7predictEv(ptr noundef nonnull align 8 dereferenceable(110620) %2)
  %35 = shl nsw i32 %34, 1
  %36 = or disjoint i32 %35, 1
  %37 = tail call noundef i32 @_ZN7libzpaq7Decoder6decodeEi(ptr noundef nonnull align 8 dereferenceable(110672) %0, i32 noundef %36)
  %reass.add = shl i32 %.0915, 1
  %38 = add i32 %37, %reass.add
  %39 = and i32 %37, 1
  tail call void @_ZN7libzpaq9Predictor6updateEi(ptr noundef nonnull align 8 dereferenceable(110620) %2, i32 noundef %39)
  %40 = icmp slt i32 %38, 256
  br i1 %40, label %.preheader, label %41, !llvm.loop !18

41:                                               ; preds = %.preheader
  %42 = add nsw i32 %38, -256
  br label %61

43:                                               ; preds = %1
  %44 = getelementptr inbounds i8, ptr %0, i64 8
  %45 = load i32, ptr %44, align 8, !tbaa !20
  %46 = getelementptr inbounds i8, ptr %0, i64 12
  %47 = load i32, ptr %46, align 4, !tbaa !21
  %48 = icmp eq i32 %45, %47
  br i1 %48, label %49, label %50

49:                                               ; preds = %43
  tail call void @_ZN7libzpaq7Decoder7loadbufEv(ptr noundef nonnull align 8 dereferenceable(110672) %0)
  %.pre = load i32, ptr %44, align 8, !tbaa !20
  %.pre16 = load i32, ptr %46, align 4, !tbaa !21
  br label %50

50:                                               ; preds = %49, %43
  %51 = phi i32 [ %.pre16, %49 ], [ %47, %43 ]
  %52 = phi i32 [ %.pre, %49 ], [ %45, %43 ]
  %53 = icmp eq i32 %52, %51
  br i1 %53, label %61, label %54

54:                                               ; preds = %50
  %55 = getelementptr inbounds i8, ptr %0, i64 110648
  %56 = add i32 %52, 1
  store i32 %56, ptr %44, align 8, !tbaa !20
  %57 = zext i32 %52 to i64
  %58 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZN7libzpaq5ArrayIcEixEm(ptr noundef nonnull align 8 dereferenceable(20) %55, i64 noundef %57)
  %59 = load i8, ptr %58, align 1, !tbaa !22
  %60 = zext i8 %59 to i32
  br label %61

61:                                               ; preds = %50, %31, %33, %54, %41
  %.0 = phi i32 [ %42, %41 ], [ %60, %54 ], [ -1, %33 ], [ -1, %31 ], [ -1, %50 ]
  ret i32 %.0
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN7libzpaq9Predictor7predictEv(ptr noundef nonnull align 8 dereferenceable(110620)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7libzpaq9Predictor6updateEi(ptr noundef nonnull align 8 dereferenceable(110620), i32 noundef) local_unnamed_addr #2 align 2

attributes #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 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 = { mustprogress 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, !10, i64 16}
!6 = !{!"_ZTSN7libzpaq7DecoderE", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !11, i64 24, !13, i64 110648}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"_ZTSN7libzpaq9PredictorE", !10, i64 0, !10, i64 4, !8, i64 8, !8, i64 1032, !7, i64 2056, !8, i64 2064, !8, i64 30736, !8, i64 31760, !8, i64 35856, !8, i64 44048, !12, i64 109584, !7, i64 110608, !10, i64 110616}
!12 = !{!"_ZTSN7libzpaq10StateTableE", !8, i64 0}
!13 = !{!"_ZTSN7libzpaq5ArrayIcEE", !7, i64 0, !14, i64 8, !10, i64 16}
!14 = !{!"long", !8, i64 0}
!15 = !{!6, !7, i64 0}
!16 = !{!17, !17, i64 0}
!17 = !{!"vtable pointer", !9, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}
!20 = !{!6, !10, i64 8}
!21 = !{!6, !10, i64 12}
!22 = !{!8, !8, i64 0}


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