; 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"

%struct.ZSTD_CCtx_s = type { i32, i32, i32, %struct.ZSTD_CCtx_params_s, %struct.ZSTD_CCtx_params_s, %struct.ZSTD_CCtx_params_s, i32, i64, %struct.ZSTD_cwksp, i64, i64, i64, i64, %struct.XXH_NAMESPACEXXH64_state_s, %struct.ZSTD_customMem, ptr, i64, %struct.SeqCollector, i32, i32, %struct.seqStore_t, %struct.ldmState_t, ptr, i64, %struct.rawSeqStore_t, %struct.ZSTD_blockState_t, ptr, i32, ptr, i64, i64, i64, i64, ptr, i64, i64, i64, i32, i32, %struct.ZSTD_inBuffer_s, i64, i64, %struct.ZSTD_localDict, ptr, %struct.ZSTD_prefixDict_s, ptr, %struct.ZSTD_blockSplitCtx, ptr, i64 }
%struct.ZSTD_CCtx_params_s = type { i32, %struct.ZSTD_compressionParameters, %struct.ZSTD_frameParameters, i32, i32, i64, i32, i32, i32, i32, i64, i32, i32, %struct.ldmParams_t, i32, i32, i32, i32, i32, i32, i32, i32, %struct.ZSTD_customMem, i32, i32, ptr, ptr, i64, i32 }
%struct.ZSTD_compressionParameters = type { i32, i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_frameParameters = type { i32, i32, i32 }
%struct.ldmParams_t = type { i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_cwksp = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, i8, i32, i32, i32 }
%struct.XXH_NAMESPACEXXH64_state_s = type { i64, [4 x i64], [4 x i64], i32, i32, i64 }
%struct.ZSTD_customMem = type { ptr, ptr, ptr }
%struct.SeqCollector = type { i32, ptr, i64, i64 }
%struct.seqStore_t = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, i64, i64, i32, i32 }
%struct.ldmState_t = type { %struct.ZSTD_window_t, ptr, i32, ptr, [64 x i64], [64 x %struct.ldmMatchCandidate_t] }
%struct.ZSTD_window_t = type { ptr, ptr, ptr, i32, i32, i32 }
%struct.ldmMatchCandidate_t = type { ptr, i32, i32, ptr }
%struct.rawSeqStore_t = type { ptr, i64, i64, i64, i64 }
%struct.ZSTD_blockState_t = type { ptr, ptr, %struct.ZSTD_matchState_t }
%struct.ZSTD_matchState_t = type { %struct.ZSTD_window_t, i32, i32, i32, i32, ptr, [8 x i32], i64, i32, ptr, ptr, ptr, i32, i32, %struct.optState_t, ptr, %struct.ZSTD_compressionParameters, ptr, i32, i32 }
%struct.optState_t = type { ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, i32, i32, i32, i32, i32, i32, i32, ptr, i32 }
%struct.ZSTD_inBuffer_s = type { ptr, i64, i64 }
%struct.ZSTD_localDict = type { ptr, ptr, i64, i32, ptr }
%struct.ZSTD_prefixDict_s = type { ptr, i64, i32 }
%struct.ZSTD_blockSplitCtx = type { %struct.seqStore_t, %struct.seqStore_t, %struct.seqStore_t, %struct.seqStore_t, %struct.seqStore_t, [196 x i32], %struct.ZSTD_entropyCTablesMetadata_t }
%struct.ZSTD_entropyCTablesMetadata_t = type { %struct.ZSTD_hufCTablesMetadata_t, %struct.ZSTD_fseCTablesMetadata_t }
%struct.ZSTD_hufCTablesMetadata_t = type { i32, [128 x i8], i64 }
%struct.ZSTD_fseCTablesMetadata_t = type { i32, i32, i32, [133 x i8], i64, i64 }

; 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: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

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

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_CCtx_loadDictionary(ptr noundef, ptr noundef, i64 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_internal(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4, i64 noundef %5) #0 {
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca i64, align 8
  %14 = alloca i64, align 8
  %15 = alloca i32, align 4
  %16 = alloca i64, align 8
  %17 = alloca i64, align 8
  %18 = alloca i64, align 8
  store ptr %0, ptr %8, align 8, !tbaa !5
  store ptr %1, ptr %9, align 8, !tbaa !5
  store i64 %2, ptr %10, align 8, !tbaa !9
  store ptr %3, ptr %11, align 8, !tbaa !5
  store ptr %4, ptr %12, align 8, !tbaa !5
  store i64 %5, ptr %13, align 8, !tbaa !11
  br label %19

19:                                               ; preds = %6
  br label %20

20:                                               ; preds = %19
  br label %21

21:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #3
  %22 = load ptr, ptr %8, align 8, !tbaa !5
  %23 = call i64 @ZSTD_CCtx_reset(ptr noundef %22, i32 noundef 1)
  store i64 %23, ptr %14, align 8, !tbaa !9
  %24 = load i64, ptr %14, align 8, !tbaa !9
  %25 = call i32 @ERR_isError(i64 noundef %24)
  %26 = icmp ne i32 %25, 0
  br i1 %26, label %27, label %41

27:                                               ; preds = %21
  br label %28

28:                                               ; preds = %27
  br label %29

29:                                               ; preds = %28
  br label %30

30:                                               ; preds = %29
  br label %31

31:                                               ; preds = %30
  br label %32

32:                                               ; preds = %31
  br label %33

33:                                               ; preds = %32
  br label %34

34:                                               ; preds = %33
  br label %35

35:                                               ; preds = %34
  br label %36

36:                                               ; preds = %35
  br label %37

37:                                               ; preds = %36
  br label %38

38:                                               ; preds = %37
  br label %39

39:                                               ; preds = %38
  %40 = load i64, ptr %14, align 8, !tbaa !9
  store i64 %40, ptr %7, align 8
  store i32 1, ptr %15, align 4
  br label %42

41:                                               ; preds = %21
  store i32 0, ptr %15, align 4
  br label %42

42:                                               ; preds = %41, %39
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #3
  %43 = load i32, ptr %15, align 4
  switch i32 %43, label %135 [
    i32 0, label %44
    i32 1, label %133
  ]

44:                                               ; preds = %42
  br label %45

45:                                               ; preds = %44
  br label %46

46:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #3
  %47 = load ptr, ptr %8, align 8, !tbaa !5
  %48 = load i64, ptr %13, align 8, !tbaa !11
  %49 = call i64 @ZSTD_CCtx_setPledgedSrcSize(ptr noundef %47, i64 noundef %48)
  store i64 %49, ptr %16, align 8, !tbaa !9
  %50 = load i64, ptr %16, align 8, !tbaa !9
  %51 = call i32 @ERR_isError(i64 noundef %50)
  %52 = icmp ne i32 %51, 0
  br i1 %52, label %53, label %67

53:                                               ; preds = %46
  br label %54

54:                                               ; preds = %53
  br label %55

55:                                               ; preds = %54
  br label %56

56:                                               ; preds = %55
  br label %57

57:                                               ; preds = %56
  br label %58

58:                                               ; preds = %57
  br label %59

59:                                               ; preds = %58
  br label %60

60:                                               ; preds = %59
  br label %61

61:                                               ; preds = %60
  br label %62

62:                                               ; preds = %61
  br label %63

63:                                               ; preds = %62
  br label %64

64:                                               ; preds = %63
  br label %65

65:                                               ; preds = %64
  %66 = load i64, ptr %16, align 8, !tbaa !9
  store i64 %66, ptr %7, align 8
  store i32 1, ptr %15, align 4
  br label %68

67:                                               ; preds = %46
  store i32 0, ptr %15, align 4
  br label %68

68:                                               ; preds = %67, %65
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #3
  %69 = load i32, ptr %15, align 4
  switch i32 %69, label %135 [
    i32 0, label %70
    i32 1, label %133
  ]

70:                                               ; preds = %68
  br label %71

71:                                               ; preds = %70
  %72 = load ptr, ptr %8, align 8, !tbaa !5
  %73 = getelementptr inbounds %struct.ZSTD_CCtx_s, ptr %72, i32 0, i32 3
  %74 = load ptr, ptr %12, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %73, ptr align 8 %74, i64 216, i1 false), !tbaa.struct !13
  %75 = load ptr, ptr %9, align 8, !tbaa !5
  %76 = icmp ne ptr %75, null
  br i1 %76, label %77, label %105

77:                                               ; preds = %71
  br label %78

78:                                               ; preds = %77
  call void @llvm.lifetime.start.p0(i64 8, ptr %17) #3
  %79 = load ptr, ptr %8, align 8, !tbaa !5
  %80 = load ptr, ptr %9, align 8, !tbaa !5
  %81 = load i64, ptr %10, align 8, !tbaa !9
  %82 = call i64 @ZSTD_CCtx_loadDictionary(ptr noundef %79, ptr noundef %80, i64 noundef %81)
  store i64 %82, ptr %17, align 8, !tbaa !9
  %83 = load i64, ptr %17, align 8, !tbaa !9
  %84 = call i32 @ERR_isError(i64 noundef %83)
  %85 = icmp ne i32 %84, 0
  br i1 %85, label %86, label %100

86:                                               ; preds = %78
  br label %87

87:                                               ; preds = %86
  br label %88

88:                                               ; preds = %87
  br label %89

89:                                               ; preds = %88
  br label %90

90:                                               ; preds = %89
  br label %91

91:                                               ; preds = %90
  br label %92

92:                                               ; preds = %91
  br label %93

93:                                               ; preds = %92
  br label %94

94:                                               ; preds = %93
  br label %95

95:                                               ; preds = %94
  br label %96

96:                                               ; preds = %95
  br label %97

97:                                               ; preds = %96
  br label %98

98:                                               ; preds = %97
  %99 = load i64, ptr %17, align 8, !tbaa !9
  store i64 %99, ptr %7, align 8
  store i32 1, ptr %15, align 4
  br label %101

100:                                              ; preds = %78
  store i32 0, ptr %15, align 4
  br label %101

101:                                              ; preds = %100, %98
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #3
  %102 = load i32, ptr %15, align 4
  switch i32 %102, label %135 [
    i32 0, label %103
    i32 1, label %133
  ]

103:                                              ; preds = %101
  br label %104

104:                                              ; preds = %103
  br label %132

105:                                              ; preds = %71
  br label %106

106:                                              ; preds = %105
  call void @llvm.lifetime.start.p0(i64 8, ptr %18) #3
  %107 = load ptr, ptr %8, align 8, !tbaa !5
  %108 = load ptr, ptr %11, align 8, !tbaa !5
  %109 = call i64 @ZSTD_CCtx_refCDict(ptr noundef %107, ptr noundef %108)
  store i64 %109, ptr %18, align 8, !tbaa !9
  %110 = load i64, ptr %18, align 8, !tbaa !9
  %111 = call i32 @ERR_isError(i64 noundef %110)
  %112 = icmp ne i32 %111, 0
  br i1 %112, label %113, label %127

113:                                              ; preds = %106
  br label %114

114:                                              ; preds = %113
  br label %115

115:                                              ; preds = %114
  br label %116

116:                                              ; preds = %115
  br label %117

117:                                              ; preds = %116
  br label %118

118:                                              ; preds = %117
  br label %119

119:                                              ; preds = %118
  br label %120

120:                                              ; preds = %119
  br label %121

121:                                              ; preds = %120
  br label %122

122:                                              ; preds = %121
  br label %123

123:                                              ; preds = %122
  br label %124

124:                                              ; preds = %123
  br label %125

125:                                              ; preds = %124
  %126 = load i64, ptr %18, align 8, !tbaa !9
  store i64 %126, ptr %7, align 8
  store i32 1, ptr %15, align 4
  br label %128

127:                                              ; preds = %106
  store i32 0, ptr %15, align 4
  br label %128

128:                                              ; preds = %127, %125
  call void @llvm.lifetime.end.p0(i64 8, ptr %18) #3
  %129 = load i32, ptr %15, align 4
  switch i32 %129, label %135 [
    i32 0, label %130
    i32 1, label %133
  ]

130:                                              ; preds = %128
  br label %131

131:                                              ; preds = %130
  br label %132

132:                                              ; preds = %131, %104
  store i64 0, ptr %7, align 8
  br label %133

133:                                              ; preds = %132, %128, %101, %68, %42
  %134 = load i64, ptr %7, align 8
  ret i64 %134

135:                                              ; preds = %128, %101, %68, %42
  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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = !{i64 0, i64 4, !14, i64 4, i64 4, !14, i64 8, i64 4, !14, i64 12, i64 4, !14, i64 16, i64 4, !14, i64 20, i64 4, !14, i64 24, i64 4, !14, i64 28, i64 4, !14, i64 32, i64 4, !14, i64 36, i64 4, !14, i64 40, i64 4, !14, i64 44, i64 4, !14, i64 48, i64 4, !14, i64 56, i64 8, !9, i64 64, i64 4, !14, i64 68, i64 4, !14, i64 72, i64 4, !14, i64 76, i64 4, !14, i64 80, i64 8, !9, i64 88, i64 4, !14, i64 92, i64 4, !14, i64 96, i64 4, !14, i64 100, i64 4, !14, i64 104, i64 4, !14, i64 108, i64 4, !14, i64 112, i64 4, !14, i64 116, i64 4, !14, i64 120, i64 4, !14, i64 124, i64 4, !14, i64 128, i64 4, !14, i64 132, i64 4, !14, i64 136, i64 4, !14, i64 140, i64 4, !14, i64 144, i64 4, !14, i64 148, i64 4, !14, i64 152, i64 8, !5, i64 160, i64 8, !5, i64 168, i64 8, !5, i64 176, i64 4, !14, i64 180, i64 4, !14, i64 184, i64 8, !5, i64 192, i64 8, !5, i64 200, i64 8, !9, i64 208, i64 4, !14}
!14 = !{!15, !15, i64 0}
!15 = !{!"int", !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: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

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

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_CCtx_loadDictionary(ptr noundef, ptr noundef, i64 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 noundef i64 @ZSTD_initCStream_internal(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr nocapture noundef readonly %4, i64 noundef %5) local_unnamed_addr #0 {
  %7 = tail call i64 @ZSTD_CCtx_reset(ptr noundef %0, i32 noundef 1)
  %8 = tail call i32 @ERR_isError(i64 noundef %7)
  %.not.not = icmp eq i32 %8, 0
  br i1 %.not.not, label %9, label %21

9:                                                ; preds = %6
  %10 = tail call i64 @ZSTD_CCtx_setPledgedSrcSize(ptr noundef %0, i64 noundef %5)
  %11 = tail call i32 @ERR_isError(i64 noundef %10)
  %.not27.not = icmp eq i32 %11, 0
  br i1 %.not27.not, label %12, label %21

12:                                               ; preds = %9
  %13 = getelementptr inbounds i8, ptr %0, i64 16
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(216) %13, ptr noundef nonnull align 8 dereferenceable(216) %4, i64 216, i1 false), !tbaa.struct !5
  %.not28 = icmp eq ptr %1, null
  br i1 %.not28, label %17, label %14

14:                                               ; preds = %12
  %15 = tail call i64 @ZSTD_CCtx_loadDictionary(ptr noundef nonnull %0, ptr noundef nonnull %1, i64 noundef %2)
  %16 = tail call i32 @ERR_isError(i64 noundef %15)
  %.not30.not = icmp eq i32 %16, 0
  br i1 %.not30.not, label %20, label %21

17:                                               ; preds = %12
  %18 = tail call i64 @ZSTD_CCtx_refCDict(ptr noundef nonnull %0, ptr noundef %3)
  %19 = tail call i32 @ERR_isError(i64 noundef %18)
  %.not29.not = icmp eq i32 %19, 0
  br i1 %.not29.not, label %20, label %21

20:                                               ; preds = %17, %14
  br label %21

21:                                               ; preds = %17, %14, %9, %6, %20
  %.4 = phi i64 [ %7, %6 ], [ %10, %9 ], [ %15, %14 ], [ 0, %20 ], [ %18, %17 ]
  ret i64 %.4
}

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 nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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 = !{i64 0, i64 4, !6, i64 4, i64 4, !6, i64 8, i64 4, !6, i64 12, i64 4, !6, i64 16, i64 4, !6, i64 20, i64 4, !6, i64 24, i64 4, !6, i64 28, i64 4, !6, i64 32, i64 4, !6, i64 36, i64 4, !6, i64 40, i64 4, !6, i64 44, i64 4, !6, i64 48, i64 4, !6, i64 56, i64 8, !10, i64 64, i64 4, !6, i64 68, i64 4, !6, i64 72, i64 4, !6, i64 76, i64 4, !6, i64 80, i64 8, !10, i64 88, i64 4, !6, i64 92, i64 4, !6, i64 96, i64 4, !6, i64 100, i64 4, !6, i64 104, i64 4, !6, i64 108, i64 4, !6, i64 112, i64 4, !6, i64 116, i64 4, !6, i64 120, i64 4, !6, i64 124, i64 4, !6, i64 128, i64 4, !6, i64 132, i64 4, !6, i64 136, i64 4, !6, i64 140, i64 4, !6, i64 144, i64 4, !6, i64 148, i64 4, !6, i64 152, i64 8, !12, i64 160, i64 8, !12, i64 168, i64 8, !12, i64 176, i64 4, !6, i64 180, i64 4, !6, i64 184, i64 8, !12, i64 192, i64 8, !12, i64 200, i64 8, !10, i64 208, i64 4, !6}
!6 = !{!7, !7, i64 0}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !11, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"any pointer", !8, i64 0}


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