; 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_compressionParameters = type { i32, i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_parameters = type { %struct.ZSTD_compressionParameters, %struct.ZSTD_frameParameters }
%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.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: nounwind uwtable
declare dso_local i64 @ZSTD_checkCParams(ptr noundef byval(%struct.ZSTD_compressionParameters) align 8) #0

; Function Attrs: nounwind uwtable
declare hidden void @ZSTD_CCtxParams_init_internal(ptr noundef, ptr noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_compress_advanced(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, i64 noundef %4, ptr noundef %5, i64 noundef %6, ptr noundef byval(%struct.ZSTD_parameters) align 8 %7) #0 {
  %9 = alloca i64, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i64, align 8
  %13 = alloca ptr, align 8
  %14 = alloca i64, align 8
  %15 = alloca ptr, align 8
  %16 = alloca i64, align 8
  %17 = alloca i64, align 8
  %18 = alloca i32, align 4
  store ptr %0, ptr %10, align 8, !tbaa !5
  store ptr %1, ptr %11, align 8, !tbaa !5
  store i64 %2, ptr %12, align 8, !tbaa !9
  store ptr %3, ptr %13, align 8, !tbaa !5
  store i64 %4, ptr %14, align 8, !tbaa !9
  store ptr %5, ptr %15, align 8, !tbaa !5
  store i64 %6, ptr %16, align 8, !tbaa !9
  br label %19

19:                                               ; preds = %8
  br label %20

20:                                               ; preds = %19
  br label %21

21:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %17) #2
  %22 = getelementptr inbounds %struct.ZSTD_parameters, ptr %7, i32 0, i32 0
  %23 = call i64 @ZSTD_checkCParams(ptr noundef byval(%struct.ZSTD_compressionParameters) align 8 %22)
  store i64 %23, ptr %17, align 8, !tbaa !9
  %24 = load i64, ptr %17, 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 %17, align 8, !tbaa !9
  store i64 %40, ptr %9, align 8
  store i32 1, ptr %18, align 4
  br label %42

41:                                               ; preds = %21
  store i32 0, ptr %18, align 4
  br label %42

42:                                               ; preds = %41, %39
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #2
  %43 = load i32, ptr %18, align 4
  switch i32 %43, label %60 [
    i32 0, label %44
    i32 1, label %58
  ]

44:                                               ; preds = %42
  br label %45

45:                                               ; preds = %44
  %46 = load ptr, ptr %10, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.ZSTD_CCtx_s, ptr %46, i32 0, i32 5
  call void @ZSTD_CCtxParams_init_internal(ptr noundef %47, ptr noundef %7, i32 noundef 0)
  %48 = load ptr, ptr %10, align 8, !tbaa !5
  %49 = load ptr, ptr %11, align 8, !tbaa !5
  %50 = load i64, ptr %12, align 8, !tbaa !9
  %51 = load ptr, ptr %13, align 8, !tbaa !5
  %52 = load i64, ptr %14, align 8, !tbaa !9
  %53 = load ptr, ptr %15, align 8, !tbaa !5
  %54 = load i64, ptr %16, align 8, !tbaa !9
  %55 = load ptr, ptr %10, align 8, !tbaa !5
  %56 = getelementptr inbounds %struct.ZSTD_CCtx_s, ptr %55, i32 0, i32 5
  %57 = call i64 @ZSTD_compress_advanced_internal(ptr noundef %48, ptr noundef %49, i64 noundef %50, ptr noundef %51, i64 noundef %52, ptr noundef %53, i64 noundef %54, ptr noundef %56)
  store i64 %57, ptr %9, align 8
  br label %58

58:                                               ; preds = %45, %42
  %59 = load i64, ptr %9, align 8
  ret i64 %59

60:                                               ; preds = %42
  unreachable
}

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

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 = !{!"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"

%struct.ZSTD_compressionParameters = type { i32, i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_parameters = type { %struct.ZSTD_compressionParameters, %struct.ZSTD_frameParameters }
%struct.ZSTD_frameParameters = type { i32, i32, i32 }

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

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_checkCParams(ptr noundef byval(%struct.ZSTD_compressionParameters) align 8) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare hidden void @ZSTD_CCtxParams_init_internal(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_compress_advanced(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, i64 noundef %4, ptr noundef %5, i64 noundef %6, ptr noundef byval(%struct.ZSTD_parameters) align 8 %7) local_unnamed_addr #0 {
  %9 = tail call i64 @ZSTD_checkCParams(ptr noundef nonnull byval(%struct.ZSTD_compressionParameters) align 8 %7)
  %10 = tail call i32 @ERR_isError(i64 noundef %9)
  %.not.not = icmp eq i32 %10, 0
  br i1 %.not.not, label %11, label %14

11:                                               ; preds = %8
  %12 = getelementptr inbounds i8, ptr %0, i64 448
  call void @ZSTD_CCtxParams_init_internal(ptr noundef nonnull %12, ptr noundef nonnull %7, i32 noundef 0)
  %13 = call i64 @ZSTD_compress_advanced_internal(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, i64 noundef %4, ptr noundef %5, i64 noundef %6, ptr noundef nonnull %12)
  br label %14

14:                                               ; preds = %8, %11
  %.1 = phi i64 [ %9, %8 ], [ %13, %11 ]
  ret i64 %.1
}

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

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: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass