; 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_frameParameters = type { i32, i32, i32 }
%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.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_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_usingCDict_advanced(ptr noundef %0, ptr noundef %1, i64 %2, i32 %3, i64 noundef %4) #0 {
  %6 = alloca i64, align 8
  %7 = alloca %struct.ZSTD_frameParameters, align 4
  %8 = alloca { i64, i32 }, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i64, align 8
  %12 = alloca i64, align 8
  %13 = alloca i32, align 4
  %14 = alloca i64, align 8
  %15 = alloca i64, align 8
  %16 = getelementptr inbounds { i64, i32 }, ptr %8, i32 0, i32 0
  store i64 %2, ptr %16, align 4
  %17 = getelementptr inbounds { i64, i32 }, ptr %8, i32 0, i32 1
  store i32 %3, ptr %17, align 4
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %7, ptr align 4 %8, i64 12, i1 false)
  store ptr %0, ptr %9, align 8, !tbaa !5
  store ptr %1, ptr %10, align 8, !tbaa !5
  store i64 %4, ptr %11, align 8, !tbaa !9
  br label %18

18:                                               ; preds = %5
  br label %19

19:                                               ; preds = %18
  br label %20

20:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  %21 = load ptr, ptr %9, align 8, !tbaa !5
  %22 = call i64 @ZSTD_CCtx_reset(ptr noundef %21, i32 noundef 1)
  store i64 %22, ptr %12, align 8, !tbaa !11
  %23 = load i64, ptr %12, align 8, !tbaa !11
  %24 = call i32 @ERR_isError(i64 noundef %23)
  %25 = icmp ne i32 %24, 0
  br i1 %25, label %26, label %40

26:                                               ; preds = %20
  br label %27

27:                                               ; preds = %26
  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
  %39 = load i64, ptr %12, align 8, !tbaa !11
  store i64 %39, ptr %6, align 8
  store i32 1, ptr %13, align 4
  br label %41

40:                                               ; preds = %20
  store i32 0, ptr %13, align 4
  br label %41

41:                                               ; preds = %40, %38
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  %42 = load i32, ptr %13, align 4
  switch i32 %42, label %102 [
    i32 0, label %43
    i32 1, label %100
  ]

43:                                               ; preds = %41
  br label %44

44:                                               ; preds = %43
  br label %45

45:                                               ; preds = %44
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #3
  %46 = load ptr, ptr %9, align 8, !tbaa !5
  %47 = load i64, ptr %11, align 8, !tbaa !9
  %48 = call i64 @ZSTD_CCtx_setPledgedSrcSize(ptr noundef %46, i64 noundef %47)
  store i64 %48, ptr %14, align 8, !tbaa !11
  %49 = load i64, ptr %14, align 8, !tbaa !11
  %50 = call i32 @ERR_isError(i64 noundef %49)
  %51 = icmp ne i32 %50, 0
  br i1 %51, label %52, label %66

52:                                               ; preds = %45
  br label %53

53:                                               ; preds = %52
  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
  %65 = load i64, ptr %14, align 8, !tbaa !11
  store i64 %65, ptr %6, align 8
  store i32 1, ptr %13, align 4
  br label %67

66:                                               ; preds = %45
  store i32 0, ptr %13, align 4
  br label %67

67:                                               ; preds = %66, %64
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #3
  %68 = load i32, ptr %13, align 4
  switch i32 %68, label %102 [
    i32 0, label %69
    i32 1, label %100
  ]

69:                                               ; preds = %67
  br label %70

70:                                               ; preds = %69
  %71 = load ptr, ptr %9, align 8, !tbaa !5
  %72 = getelementptr inbounds %struct.ZSTD_CCtx_s, ptr %71, i32 0, i32 3
  %73 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %72, i32 0, i32 2
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %73, ptr align 4 %7, i64 12, i1 false), !tbaa.struct !13
  br label %74

74:                                               ; preds = %70
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #3
  %75 = load ptr, ptr %9, align 8, !tbaa !5
  %76 = load ptr, ptr %10, align 8, !tbaa !5
  %77 = call i64 @ZSTD_CCtx_refCDict(ptr noundef %75, ptr noundef %76)
  store i64 %77, ptr %15, align 8, !tbaa !11
  %78 = load i64, ptr %15, align 8, !tbaa !11
  %79 = call i32 @ERR_isError(i64 noundef %78)
  %80 = icmp ne i32 %79, 0
  br i1 %80, label %81, label %95

81:                                               ; preds = %74
  br label %82

82:                                               ; preds = %81
  br label %83

83:                                               ; preds = %82
  br label %84

84:                                               ; preds = %83
  br label %85

85:                                               ; preds = %84
  br label %86

86:                                               ; preds = %85
  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
  %94 = load i64, ptr %15, align 8, !tbaa !11
  store i64 %94, ptr %6, align 8
  store i32 1, ptr %13, align 4
  br label %96

95:                                               ; preds = %74
  store i32 0, ptr %13, align 4
  br label %96

96:                                               ; preds = %95, %93
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #3
  %97 = load i32, ptr %13, align 4
  switch i32 %97, label %102 [
    i32 0, label %98
    i32 1, label %100
  ]

98:                                               ; preds = %96
  br label %99

99:                                               ; preds = %98
  store i64 0, ptr %6, align 8
  br label %100

100:                                              ; preds = %99, %96, %67, %41
  %101 = load i64, ptr %6, align 8
  ret i64 %101

102:                                              ; preds = %96, %67, %41
  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 long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{i64 0, i64 4, !14, i64 4, i64 4, !14, i64 8, 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: 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_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_usingCDict_advanced(ptr noundef %0, ptr noundef %1, i64 %2, i32 %3, i64 noundef %4) local_unnamed_addr #0 {
  %6 = tail call i64 @ZSTD_CCtx_reset(ptr noundef %0, i32 noundef 1)
  %7 = tail call i32 @ERR_isError(i64 noundef %6)
  %.not.not = icmp eq i32 %7, 0
  br i1 %.not.not, label %8, label %15

8:                                                ; preds = %5
  %9 = tail call i64 @ZSTD_CCtx_setPledgedSrcSize(ptr noundef %0, i64 noundef %4)
  %10 = tail call i32 @ERR_isError(i64 noundef %9)
  %.not20.not = icmp eq i32 %10, 0
  br i1 %.not20.not, label %11, label %15

11:                                               ; preds = %8
  %12 = getelementptr inbounds i8, ptr %0, i64 48
  store i64 %2, ptr %12, align 8
  %.sroa.215.0..sroa_idx = getelementptr inbounds i8, ptr %0, i64 56
  store i32 %3, ptr %.sroa.215.0..sroa_idx, align 8, !tbaa !5
  %13 = tail call i64 @ZSTD_CCtx_refCDict(ptr noundef %0, ptr noundef %1)
  %14 = tail call i32 @ERR_isError(i64 noundef %13)
  %.not21.not = icmp eq i32 %14, 0
  %spec.select = select i1 %.not21.not, i64 0, i64 %13
  br label %15

15:                                               ; preds = %11, %8, %5
  %.3 = phi i64 [ %6, %5 ], [ %9, %8 ], [ %spec.select, %11 ]
  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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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