; LLVM IR from indygreg/python-zstandard :: zstd (zstd)

; 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 hidden i32 @ERR_isError(i64 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
declare dso_local i64 @ZSTD_CCtx_setParameter(ptr noundef, i32 noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_CCtx_refCDict(ptr noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_CCtx_reset(ptr noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_initCStream(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %2
  br label %11

11:                                               ; preds = %10
  br label %12

12:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = call i64 @ZSTD_CCtx_reset(ptr noundef %13, i32 noundef 1)
  store i64 %14, ptr %6, align 8, !tbaa !11
  %15 = load i64, ptr %6, align 8, !tbaa !11
  %16 = call i32 @ERR_isError(i64 noundef %15)
  %17 = icmp ne i32 %16, 0
  br i1 %17, label %18, label %32

18:                                               ; preds = %12
  br label %19

19:                                               ; preds = %18
  br label %20

20:                                               ; preds = %19
  br label %21

21:                                               ; preds = %20
  br label %22

22:                                               ; preds = %21
  br label %23

23:                                               ; preds = %22
  br label %24

24:                                               ; preds = %23
  br label %25

25:                                               ; preds = %24
  br label %26

26:                                               ; preds = %25
  br label %27

27:                                               ; preds = %26
  br label %28

28:                                               ; preds = %27
  br label %29

29:                                               ; preds = %28
  br label %30

30:                                               ; preds = %29
  %31 = load i64, ptr %6, align 8, !tbaa !11
  store i64 %31, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %33

32:                                               ; preds = %12
  store i32 0, ptr %7, align 4
  br label %33

33:                                               ; preds = %32, %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %34 = load i32, ptr %7, align 4
  switch i32 %34, label %90 [
    i32 0, label %35
    i32 1, label %88
  ]

35:                                               ; preds = %33
  br label %36

36:                                               ; preds = %35
  br label %37

37:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %38 = load ptr, ptr %4, align 8, !tbaa !5
  %39 = call i64 @ZSTD_CCtx_refCDict(ptr noundef %38, ptr noundef null)
  store i64 %39, ptr %8, align 8, !tbaa !11
  %40 = load i64, ptr %8, align 8, !tbaa !11
  %41 = call i32 @ERR_isError(i64 noundef %40)
  %42 = icmp ne i32 %41, 0
  br i1 %42, label %43, label %57

43:                                               ; preds = %37
  br label %44

44:                                               ; preds = %43
  br label %45

45:                                               ; preds = %44
  br label %46

46:                                               ; preds = %45
  br label %47

47:                                               ; preds = %46
  br label %48

48:                                               ; preds = %47
  br label %49

49:                                               ; preds = %48
  br label %50

50:                                               ; preds = %49
  br label %51

51:                                               ; preds = %50
  br label %52

52:                                               ; preds = %51
  br label %53

53:                                               ; preds = %52
  br label %54

54:                                               ; preds = %53
  br label %55

55:                                               ; preds = %54
  %56 = load i64, ptr %8, align 8, !tbaa !11
  store i64 %56, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %58

57:                                               ; preds = %37
  store i32 0, ptr %7, align 4
  br label %58

58:                                               ; preds = %57, %55
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  %59 = load i32, ptr %7, align 4
  switch i32 %59, label %90 [
    i32 0, label %60
    i32 1, label %88
  ]

60:                                               ; preds = %58
  br label %61

61:                                               ; preds = %60
  br label %62

62:                                               ; preds = %61
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %63 = load ptr, ptr %4, align 8, !tbaa !5
  %64 = load i32, ptr %5, align 4, !tbaa !9
  %65 = call i64 @ZSTD_CCtx_setParameter(ptr noundef %63, i32 noundef 100, i32 noundef %64)
  store i64 %65, ptr %9, align 8, !tbaa !11
  %66 = load i64, ptr %9, align 8, !tbaa !11
  %67 = call i32 @ERR_isError(i64 noundef %66)
  %68 = icmp ne i32 %67, 0
  br i1 %68, label %69, label %83

69:                                               ; preds = %62
  br label %70

70:                                               ; preds = %69
  br label %71

71:                                               ; preds = %70
  br label %72

72:                                               ; preds = %71
  br label %73

73:                                               ; preds = %72
  br label %74

74:                                               ; preds = %73
  br label %75

75:                                               ; preds = %74
  br label %76

76:                                               ; preds = %75
  br label %77

77:                                               ; preds = %76
  br label %78

78:                                               ; preds = %77
  br label %79

79:                                               ; preds = %78
  br label %80

80:                                               ; preds = %79
  br label %81

81:                                               ; preds = %80
  %82 = load i64, ptr %9, align 8, !tbaa !11
  store i64 %82, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %84

83:                                               ; preds = %62
  store i32 0, ptr %7, align 4
  br label %84

84:                                               ; preds = %83, %81
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  %85 = load i32, ptr %7, align 4
  switch i32 %85, label %90 [
    i32 0, label %86
    i32 1, label %88
  ]

86:                                               ; preds = %84
  br label %87

87:                                               ; preds = %86
  store i64 0, ptr %3, align 8
  br label %88

88:                                               ; preds = %87, %84, %58, %33
  %89 = load i64, ptr %3, align 8
  ret i64 %89

90:                                               ; preds = %84, %58, %33
  unreachable
}

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, !12, i64 0}
!12 = !{!"long", !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"

; Function Attrs: nounwind uwtable
declare hidden i32 @ERR_isError(i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_CCtx_setParameter(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_CCtx_refCDict(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_CCtx_reset(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_initCStream(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call i64 @ZSTD_CCtx_reset(ptr noundef %0, i32 noundef 1)
  %4 = tail call i32 @ERR_isError(i64 noundef %3)
  %.not.not = icmp eq i32 %4, 0
  br i1 %.not.not, label %5, label %11

5:                                                ; preds = %2
  %6 = tail call i64 @ZSTD_CCtx_refCDict(ptr noundef %0, ptr noundef null)
  %7 = tail call i32 @ERR_isError(i64 noundef %6)
  %.not16.not = icmp eq i32 %7, 0
  br i1 %.not16.not, label %8, label %11

8:                                                ; preds = %5
  %9 = tail call i64 @ZSTD_CCtx_setParameter(ptr noundef %0, i32 noundef 100, i32 noundef %1)
  %10 = tail call i32 @ERR_isError(i64 noundef %9)
  %.not17.not = icmp eq i32 %10, 0
  %spec.select = select i1 %.not17.not, i64 0, i64 %9
  br label %11

11:                                               ; preds = %8, %5, %2
  %.3 = phi i64 [ %3, %2 ], [ %6, %5 ], [ %spec.select, %8 ]
  ret i64 %.3
}

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)"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass