; 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: inlinehint nounwind uwtable
declare hidden void @ZSTD_customFree(ptr noundef, ptr noundef byval(%struct.ZSTD_customMem) align 8) #2

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_freeDDict(ptr noundef %0) #3 {
  %2 = alloca i64, align 8
  %3 = alloca ptr, align 8
  %4 = alloca %struct.ZSTD_customMem, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = icmp eq ptr %5, null
  br i1 %6, label %7, label %8

7:                                                ; preds = %1
  store i64 0, ptr %2, align 8
  br label %15

8:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #4
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.ZSTD_DDict_s, ptr %9, i32 0, i32 6
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %4, ptr align 8 %10, i64 24, i1 false), !tbaa.struct !9
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.ZSTD_DDict_s, ptr %11, i32 0, i32 0
  %13 = load ptr, ptr %12, align 8, !tbaa !10
  call void @ZSTD_customFree(ptr noundef %13, ptr noundef byval(%struct.ZSTD_customMem) align 8 %4)
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  call void @ZSTD_customFree(ptr noundef %14, ptr noundef byval(%struct.ZSTD_customMem) align 8 %4)
  store i64 0, ptr %2, align 8
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #4
  br label %15

15:                                               ; preds = %8, %7
  %16 = load i64, ptr %2, align 8
  ret i64 %16
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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" }
attributes #3 = { 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 = !{i64 0, i64 8, !5, i64 8, i64 8, !5, i64 16, i64 8, !5}
!10 = !{!11, !6, i64 0}
!11 = !{!"ZSTD_DDict_s", !6, i64 0, !6, i64 8, !12, i64 16, !13, i64 24, !14, i64 27316, !14, i64 27320, !15, i64 27328}
!12 = !{!"long", !7, i64 0}
!13 = !{!"", !7, i64 0, !7, i64 4104, !7, i64 6160, !7, i64 10264, !7, i64 26652, !7, i64 26664}
!14 = !{!"int", !7, i64 0}
!15 = !{!"", !6, i64 0, !6, i64 8, !6, i64 16}


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

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

; 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) #1

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

; Function Attrs: nounwind uwtable
define dso_local noundef i64 @ZSTD_freeDDict(ptr noundef %0) local_unnamed_addr #3 {
  %2 = alloca %struct.ZSTD_customMem, align 8
  %3 = icmp eq ptr %0, null
  br i1 %3, label %7, label %4

4:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #4
  %5 = getelementptr inbounds i8, ptr %0, i64 27328
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %2, ptr noundef nonnull align 8 dereferenceable(24) %5, i64 24, i1 false), !tbaa.struct !5
  %6 = load ptr, ptr %0, align 8, !tbaa !10
  tail call void @ZSTD_customFree(ptr noundef %6, ptr noundef nonnull byval(%struct.ZSTD_customMem) align 8 %5)
  tail call void @ZSTD_customFree(ptr noundef nonnull %0, ptr noundef nonnull byval(%struct.ZSTD_customMem) align 8 %2)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #4
  br label %7

7:                                                ; preds = %1, %4
  ret i64 0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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" }
attributes #3 = { 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 = !{i64 0, i64 8, !6, i64 8, i64 8, !6, i64 16, i64 8, !6}
!6 = !{!7, !7, i64 0}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !7, i64 0}
!11 = !{!"ZSTD_DDict_s", !7, i64 0, !7, i64 8, !12, i64 16, !13, i64 24, !14, i64 27316, !14, i64 27320, !15, i64 27328}
!12 = !{!"long", !8, i64 0}
!13 = !{!"", !8, i64 0, !8, i64 4104, !8, i64 6160, !8, i64 10264, !8, i64 26652, !8, i64 26664}
!14 = !{!"int", !8, i64 0}
!15 = !{!"", !7, i64 0, !7, i64 8, !7, i64 16}


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