; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare hidden i64 @ZSTD_compressContinue_internal(ptr noundef, ptr noundef, i64 noundef, ptr noundef, i64 noundef, i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
declare hidden i64 @ZSTD_getBlockSize_deprecated(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_compressBlock_deprecated(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, i64 noundef %4) #1 {
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i64, align 8
  %12 = alloca i64, align 8
  %13 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !5
  store i64 %2, ptr %9, align 8, !tbaa !9
  store ptr %3, ptr %10, align 8, !tbaa !5
  store i64 %4, ptr %11, align 8, !tbaa !9
  br label %14

14:                                               ; preds = %5
  br label %15

15:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #2
  %16 = load ptr, ptr %7, align 8, !tbaa !5
  %17 = call i64 @ZSTD_getBlockSize_deprecated(ptr noundef %16)
  store i64 %17, ptr %12, align 8, !tbaa !9
  br label %18

18:                                               ; preds = %15
  %19 = load i64, ptr %11, align 8, !tbaa !9
  %20 = load i64, ptr %12, align 8, !tbaa !9
  %21 = icmp ugt i64 %19, %20
  br i1 %21, label %22, label %35

22:                                               ; preds = %18
  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
  br label %31

31:                                               ; preds = %30
  br label %32

32:                                               ; preds = %31
  br label %33

33:                                               ; preds = %32
  br label %34

34:                                               ; preds = %33
  store i64 -72, ptr %6, align 8
  store i32 1, ptr %13, align 4
  br label %38

35:                                               ; preds = %18
  br label %36

36:                                               ; preds = %35
  br label %37

37:                                               ; preds = %36
  store i32 0, ptr %13, align 4
  br label %38

38:                                               ; preds = %37, %34
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #2
  %39 = load i32, ptr %13, align 4
  switch i32 %39, label %49 [
    i32 0, label %40
    i32 1, label %47
  ]

40:                                               ; preds = %38
  %41 = load ptr, ptr %7, align 8, !tbaa !5
  %42 = load ptr, ptr %8, align 8, !tbaa !5
  %43 = load i64, ptr %9, align 8, !tbaa !9
  %44 = load ptr, ptr %10, align 8, !tbaa !5
  %45 = load i64, ptr %11, align 8, !tbaa !9
  %46 = call i64 @ZSTD_compressContinue_internal(ptr noundef %41, ptr noundef %42, i64 noundef %43, ptr noundef %44, i64 noundef %45, i32 noundef 0, i32 noundef 0)
  store i64 %46, ptr %6, align 8
  br label %47

47:                                               ; preds = %40, %38
  %48 = load i64, ptr %6, align 8
  ret i64 %48

49:                                               ; preds = %38
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 i64 @ZSTD_compressContinue_internal(ptr noundef, ptr noundef, i64 noundef, ptr noundef, i64 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_compressBlock_deprecated(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, i64 noundef %4) local_unnamed_addr #0 {
  %6 = tail call i64 @ZSTD_getBlockSize_deprecated(ptr noundef %0)
  %.not = icmp ult i64 %6, %4
  br i1 %.not, label %9, label %7

7:                                                ; preds = %5
  %8 = tail call i64 @ZSTD_compressContinue_internal(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, i64 noundef %4, i32 noundef 0, i32 noundef 0)
  br label %9

9:                                                ; preds = %5, %7
  %.1 = phi i64 [ -72, %5 ], [ %8, %7 ]
  ret i64 %.1
}

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