; 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
define dso_local i64 @ZSTD_compressStream(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = load ptr, ptr %7, align 8, !tbaa !5
  %14 = call i64 @ZSTD_compressStream2(ptr noundef %11, ptr noundef %12, ptr noundef %13, i32 noundef 0)
  store i64 %14, ptr %8, align 8, !tbaa !9
  %15 = load i64, ptr %8, align 8, !tbaa !9
  %16 = call i32 @ERR_isError(i64 noundef %15)
  %17 = icmp ne i32 %16, 0
  br i1 %17, label %18, label %32

18:                                               ; preds = %10
  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 %8, align 8, !tbaa !9
  store i64 %31, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %33

32:                                               ; preds = %10
  store i32 0, ptr %9, align 4
  br label %33

33:                                               ; preds = %32, %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  %34 = load i32, ptr %9, align 4
  switch i32 %34, label %41 [
    i32 0, label %35
    i32 1, label %39
  ]

35:                                               ; preds = %33
  br label %36

36:                                               ; preds = %35
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = call i64 @ZSTD_nextInputSizeHint_MTorST(ptr noundef %37)
  store i64 %38, ptr %4, align 8
  br label %39

39:                                               ; preds = %36, %33
  %40 = load i64, ptr %4, align 8
  ret i64 %40

41:                                               ; preds = %33
  unreachable
}

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_compressStream2(ptr noundef, ptr noundef, ptr noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
declare hidden i64 @ZSTD_nextInputSizeHint_MTorST(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"

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

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_compressStream(ptr noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = tail call i64 @ZSTD_compressStream2(ptr noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef 0)
  %5 = tail call i32 @ERR_isError(i64 noundef %4)
  %.not.not = icmp eq i32 %5, 0
  br i1 %.not.not, label %6, label %8

6:                                                ; preds = %3
  %7 = tail call i64 @ZSTD_nextInputSizeHint_MTorST(ptr noundef %0)
  br label %8

8:                                                ; preds = %3, %6
  %.1 = phi i64 [ %4, %3 ], [ %7, %6 ]
  ret i64 %.1
}

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_compressStream2(ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare hidden i64 @ZSTD_nextInputSizeHint_MTorST(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: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass