; 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_customMem = type { ptr, ptr, ptr }
%struct.ZSTD_DDict_s = type { ptr, ptr, i64, %struct.ZSTD_entropyDTables_t, i32, i32, %struct.ZSTD_customMem }
%struct.ZSTD_entropyDTables_t = type { [513 x %struct.ZSTD_seqSymbol], [257 x %struct.ZSTD_seqSymbol], [513 x %struct.ZSTD_seqSymbol], [4097 x i32], [3 x i32], [157 x i32] }
%struct.ZSTD_seqSymbol = type { i16, i8, i8, i32 }

; 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: 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 i32 @ZSTD_isError(i64 noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @ZSTD_customMalloc(i64 noundef, ptr noundef byval(%struct.ZSTD_customMem) align 8) #3

; Function Attrs: nounwind uwtable
define dso_local ptr @ZSTD_createDDict_advanced(ptr noundef %0, i64 noundef %1, i32 noundef %2, i32 noundef %3, ptr noundef byval(%struct.ZSTD_customMem) align 8 %4) #2 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i64, align 8
  store ptr %0, ptr %7, align 8, !tbaa !5
  store i64 %1, ptr %8, align 8, !tbaa !9
  store i32 %2, ptr %9, align 4, !tbaa !11
  store i32 %3, ptr %10, align 4, !tbaa !11
  %14 = getelementptr inbounds %struct.ZSTD_customMem, ptr %4, i32 0, i32 0
  %15 = load ptr, ptr %14, align 8, !tbaa !13
  %16 = icmp ne ptr %15, null
  %17 = xor i1 %16, true
  %18 = zext i1 %17 to i32
  %19 = getelementptr inbounds %struct.ZSTD_customMem, ptr %4, i32 0, i32 1
  %20 = load ptr, ptr %19, align 8, !tbaa !15
  %21 = icmp ne ptr %20, null
  %22 = xor i1 %21, true
  %23 = zext i1 %22 to i32
  %24 = xor i32 %18, %23
  %25 = icmp ne i32 %24, 0
  br i1 %25, label %26, label %27

26:                                               ; preds = %5
  store ptr null, ptr %6, align 8
  br label %53

27:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  %28 = call ptr @ZSTD_customMalloc(i64 noundef 27352, ptr noundef byval(%struct.ZSTD_customMem) align 8 %4)
  store ptr %28, ptr %11, align 8, !tbaa !5
  %29 = load ptr, ptr %11, align 8, !tbaa !5
  %30 = icmp eq ptr %29, null
  br i1 %30, label %31, label %32

31:                                               ; preds = %27
  store ptr null, ptr %6, align 8
  store i32 1, ptr %12, align 4
  br label %52

32:                                               ; preds = %27
  %33 = load ptr, ptr %11, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.ZSTD_DDict_s, ptr %33, i32 0, i32 6
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %34, ptr align 8 %4, i64 24, i1 false), !tbaa.struct !16
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #4
  %35 = load ptr, ptr %11, align 8, !tbaa !5
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  %37 = load i64, ptr %8, align 8, !tbaa !9
  %38 = load i32, ptr %9, align 4, !tbaa !11
  %39 = load i32, ptr %10, align 4, !tbaa !11
  %40 = call i64 @ZSTD_initDDict_internal(ptr noundef %35, ptr noundef %36, i64 noundef %37, i32 noundef %38, i32 noundef %39)
  store i64 %40, ptr %13, align 8, !tbaa !9
  %41 = load i64, ptr %13, align 8, !tbaa !9
  %42 = call i32 @ZSTD_isError(i64 noundef %41)
  %43 = icmp ne i32 %42, 0
  br i1 %43, label %44, label %47

44:                                               ; preds = %32
  %45 = load ptr, ptr %11, align 8, !tbaa !5
  %46 = call i64 @ZSTD_freeDDict(ptr noundef %45)
  store ptr null, ptr %6, align 8
  store i32 1, ptr %12, align 4
  br label %48

47:                                               ; preds = %32
  store i32 0, ptr %12, align 4
  br label %48

48:                                               ; preds = %47, %44
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #4
  %49 = load i32, ptr %12, align 4
  switch i32 %49, label %52 [
    i32 0, label %50
  ]

50:                                               ; preds = %48
  %51 = load ptr, ptr %11, align 8, !tbaa !5
  store ptr %51, ptr %6, align 8
  store i32 1, ptr %12, align 4
  br label %52

52:                                               ; preds = %50, %48, %31
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  br label %53

53:                                               ; preds = %52, %26
  %54 = load ptr, ptr %6, align 8
  ret ptr %54
}

; Function Attrs: nounwind uwtable
declare hidden i64 @ZSTD_initDDict_internal(ptr noundef, ptr noundef, i64 noundef, i32 noundef, i32 noundef) #2

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_freeDDict(ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { inlinehint 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 #4 = { 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 = !{!"int", !7, i64 0}
!13 = !{!14, !6, i64 0}
!14 = !{!"", !6, i64 0, !6, i64 8, !6, i64 16}
!15 = !{!14, !6, i64 8}
!16 = !{i64 0, i64 8, !5, i64 8, i64 8, !5, i64 16, i64 8, !5}


; 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_customMem = type { ptr, ptr, ptr }

; 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) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @ZSTD_isError(i64 noundef) local_unnamed_addr #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @ZSTD_customMalloc(i64 noundef, ptr noundef byval(%struct.ZSTD_customMem) align 8) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local ptr @ZSTD_createDDict_advanced(ptr noundef %0, i64 noundef %1, i32 noundef %2, i32 noundef %3, ptr noundef byval(%struct.ZSTD_customMem) align 8 %4) local_unnamed_addr #1 {
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %.not = icmp eq ptr %6, null
  %7 = getelementptr inbounds i8, ptr %4, i64 8
  %8 = load ptr, ptr %7, align 8, !tbaa !10
  %.not12 = icmp eq ptr %8, null
  %9 = xor i1 %.not, %.not12
  br i1 %9, label %19, label %10

10:                                               ; preds = %5
  %11 = tail call ptr @ZSTD_customMalloc(i64 noundef 27352, ptr noundef nonnull byval(%struct.ZSTD_customMem) align 8 %4)
  %12 = icmp eq ptr %11, null
  br i1 %12, label %19, label %13

13:                                               ; preds = %10
  %14 = getelementptr inbounds i8, ptr %11, i64 27328
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %14, ptr noundef nonnull align 8 dereferenceable(24) %4, i64 24, i1 false), !tbaa.struct !11
  %15 = tail call i64 @ZSTD_initDDict_internal(ptr noundef nonnull %11, ptr noundef %0, i64 noundef %1, i32 noundef %2, i32 noundef %3)
  %16 = tail call i32 @ZSTD_isError(i64 noundef %15)
  %.not13 = icmp eq i32 %16, 0
  br i1 %.not13, label %19, label %17

17:                                               ; preds = %13
  %18 = tail call i64 @ZSTD_freeDDict(ptr noundef nonnull %11)
  br label %19

19:                                               ; preds = %17, %13, %10, %5
  %.2 = phi ptr [ null, %5 ], [ null, %10 ], [ %11, %13 ], [ null, %17 ]
  ret ptr %.2
}

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

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_freeDDict(ptr noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nocallback nofree 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 = { inlinehint 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, !7, i64 0}
!6 = !{!"", !7, i64 0, !7, i64 8, !7, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{i64 0, i64 8, !12, i64 8, i64 8, !12, i64 16, i64 8, !12}
!12 = !{!7, !7, i64 0}


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