; LLVM IR from catid/Zpng :: zstd (zstd_compress)

; 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_CCtx_params_s = type { i32, %struct.ZSTD_compressionParameters, %struct.ZSTD_frameParameters, i32, i32, i32, i32, i32, i32, %struct.ldmParams_t, %struct.ZSTD_customMem }
%struct.ZSTD_compressionParameters = type { i32, i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_frameParameters = type { i32, i32, i32 }
%struct.ldmParams_t = type { i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_customMem = type { ptr, ptr, ptr }
%struct.ZSTD_CCtx_s = type { i32, i32, i32, %struct.ZSTD_CCtx_params_s, %struct.ZSTD_CCtx_params_s, i32, ptr, i64, i64, i64, i64, i64, %struct.XXH64_state_s, %struct.ZSTD_customMem, i64, %struct.seqStore_t, %struct.ldmState_t, ptr, i64, %struct.rawSeqStore_t, %struct.ZSTD_blockState_t, ptr, ptr, i64, i64, i64, i64, ptr, i64, i64, i64, i32, i32, ptr, ptr, %struct.ZSTD_prefixDict_s }
%struct.XXH64_state_s = type { i64, i64, i64, i64, i64, [4 x i64], i32, [2 x i32] }
%struct.seqStore_t = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32 }
%struct.ldmState_t = type { %struct.ZSTD_window_t, ptr, ptr, i64 }
%struct.ZSTD_window_t = type { ptr, ptr, ptr, i32, i32 }
%struct.rawSeqStore_t = type { ptr, 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, ptr, ptr, %struct.optState_t }
%struct.optState_t = type { ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_prefixDict_s = type { ptr, i64, 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 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @ZSTD_highbit32(i32 noundef) #2

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_compressBegin_internal(ptr noundef, ptr noundef, i64 noundef, i32 noundef, i32 noundef, ptr noundef, ptr noundef byval(%struct.ZSTD_CCtx_params_s) align 8, i64 noundef, i32 noundef) #3

; Function Attrs: nounwind uwtable
declare dso_local void @ZSTD_getCParamsFromCDict(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_compressionParameters) align 4, ptr noundef) #3

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_compressBegin_usingCDict_advanced(ptr noundef %0, ptr noundef %1, i64 %2, i32 %3, i64 noundef %4) #3 {
  %6 = alloca i64, align 8
  %7 = alloca %struct.ZSTD_frameParameters, align 4
  %8 = alloca { i64, i32 }, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i64, align 8
  %12 = alloca %struct.ZSTD_CCtx_params_s, align 8
  %13 = alloca %struct.ZSTD_compressionParameters, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = getelementptr inbounds { i64, i32 }, ptr %8, i32 0, i32 0
  store i64 %2, ptr %16, align 4
  %17 = getelementptr inbounds { i64, i32 }, ptr %8, i32 0, i32 1
  store i32 %3, ptr %17, align 4
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %7, ptr align 4 %8, i64 12, i1 false)
  store ptr %0, ptr %9, align 8, !tbaa !5
  store ptr %1, ptr %10, align 8, !tbaa !5
  store i64 %4, ptr %11, align 8, !tbaa !9
  %18 = load ptr, ptr %10, align 8, !tbaa !5
  %19 = icmp eq ptr %18, null
  br i1 %19, label %20, label %21

20:                                               ; preds = %5
  store i64 -32, ptr %6, align 8
  br label %68

21:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 120, ptr %12) #4
  %22 = load ptr, ptr %9, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.ZSTD_CCtx_s, ptr %22, i32 0, i32 3
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %12, ptr align 8 %23, i64 120, i1 false), !tbaa.struct !11
  %24 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %12, i32 0, i32 1
  call void @llvm.lifetime.start.p0(i64 28, ptr %13) #4
  %25 = load ptr, ptr %10, align 8, !tbaa !5
  call void @ZSTD_getCParamsFromCDict(ptr dead_on_unwind writable sret(%struct.ZSTD_compressionParameters) align 4 %13, ptr noundef %25)
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %24, ptr align 4 %13, i64 28, i1 false), !tbaa.struct !14
  call void @llvm.lifetime.end.p0(i64 28, ptr %13) #4
  %26 = load i64, ptr %11, align 8, !tbaa !9
  %27 = icmp ne i64 %26, -1
  br i1 %27, label %28, label %62

28:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  %29 = load i64, ptr %11, align 8, !tbaa !9
  %30 = icmp ult i64 %29, 524288
  br i1 %30, label %31, label %33

31:                                               ; preds = %28
  %32 = load i64, ptr %11, align 8, !tbaa !9
  br label %34

33:                                               ; preds = %28
  br label %34

34:                                               ; preds = %33, %31
  %35 = phi i64 [ %32, %31 ], [ 524288, %33 ]
  %36 = trunc i64 %35 to i32
  store i32 %36, ptr %14, align 4, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #4
  %37 = load i32, ptr %14, align 4, !tbaa !12
  %38 = icmp ugt i32 %37, 1
  br i1 %38, label %39, label %44

39:                                               ; preds = %34
  %40 = load i32, ptr %14, align 4, !tbaa !12
  %41 = sub i32 %40, 1
  %42 = call i32 @ZSTD_highbit32(i32 noundef %41)
  %43 = add i32 %42, 1
  br label %45

44:                                               ; preds = %34
  br label %45

45:                                               ; preds = %44, %39
  %46 = phi i32 [ %43, %39 ], [ 1, %44 ]
  store i32 %46, ptr %15, align 4, !tbaa !12
  %47 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %12, i32 0, i32 1
  %48 = getelementptr inbounds %struct.ZSTD_compressionParameters, ptr %47, i32 0, i32 0
  %49 = load i32, ptr %48, align 4, !tbaa !15
  %50 = load i32, ptr %15, align 4, !tbaa !12
  %51 = icmp ugt i32 %49, %50
  br i1 %51, label %52, label %56

52:                                               ; preds = %45
  %53 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %12, i32 0, i32 1
  %54 = getelementptr inbounds %struct.ZSTD_compressionParameters, ptr %53, i32 0, i32 0
  %55 = load i32, ptr %54, align 4, !tbaa !15
  br label %58

56:                                               ; preds = %45
  %57 = load i32, ptr %15, align 4, !tbaa !12
  br label %58

58:                                               ; preds = %56, %52
  %59 = phi i32 [ %55, %52 ], [ %57, %56 ]
  %60 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %12, i32 0, i32 1
  %61 = getelementptr inbounds %struct.ZSTD_compressionParameters, ptr %60, i32 0, i32 0
  store i32 %59, ptr %61, align 4, !tbaa !15
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %62

62:                                               ; preds = %58, %21
  %63 = getelementptr inbounds %struct.ZSTD_CCtx_params_s, ptr %12, i32 0, i32 2
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %63, ptr align 4 %7, i64 12, i1 false), !tbaa.struct !21
  %64 = load ptr, ptr %9, align 8, !tbaa !5
  %65 = load ptr, ptr %10, align 8, !tbaa !5
  %66 = load i64, ptr %11, align 8, !tbaa !9
  %67 = call i64 @ZSTD_compressBegin_internal(ptr noundef %64, ptr noundef null, i64 noundef 0, i32 noundef 0, i32 noundef 0, ptr noundef %65, ptr noundef byval(%struct.ZSTD_CCtx_params_s) align 8 %12, i64 noundef %66, i32 noundef 0)
  store i64 %67, ptr %6, align 8
  call void @llvm.lifetime.end.p0(i64 120, ptr %12) #4
  br label %68

68:                                               ; preds = %62, %20
  %69 = load i64, ptr %6, align 8
  ret i64 %69
}

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 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = !{i64 0, i64 4, !12, i64 4, i64 4, !12, i64 8, i64 4, !12, i64 12, i64 4, !12, i64 16, i64 4, !12, i64 20, i64 4, !12, i64 24, i64 4, !12, i64 28, i64 4, !12, i64 32, i64 4, !12, i64 36, i64 4, !12, i64 40, i64 4, !12, i64 44, i64 4, !12, i64 48, i64 4, !12, i64 52, i64 4, !12, i64 56, i64 4, !12, i64 60, i64 4, !12, i64 64, i64 4, !12, i64 68, i64 4, !12, i64 72, i64 4, !12, i64 76, i64 4, !12, i64 80, i64 4, !12, i64 84, i64 4, !12, i64 88, i64 4, !12, i64 96, i64 8, !5, i64 104, i64 8, !5, i64 112, i64 8, !5}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{i64 0, i64 4, !12, i64 4, i64 4, !12, i64 8, i64 4, !12, i64 12, i64 4, !12, i64 16, i64 4, !12, i64 20, i64 4, !12, i64 24, i64 4, !12}
!15 = !{!16, !13, i64 4}
!16 = !{!"ZSTD_CCtx_params_s", !13, i64 0, !17, i64 4, !18, i64 32, !13, i64 44, !13, i64 48, !13, i64 52, !13, i64 56, !13, i64 60, !13, i64 64, !19, i64 68, !20, i64 96}
!17 = !{!"", !13, i64 0, !13, i64 4, !13, i64 8, !13, i64 12, !13, i64 16, !13, i64 20, !13, i64 24}
!18 = !{!"", !13, i64 0, !13, i64 4, !13, i64 8}
!19 = !{!"", !13, i64 0, !13, i64 4, !13, i64 8, !13, i64 12, !13, i64 16, !13, i64 20}
!20 = !{!"", !6, i64 0, !6, i64 8, !6, i64 16}
!21 = !{i64 0, i64 4, !12, i64 4, i64 4, !12, i64 8, i64 4, !12}


; 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_CCtx_params_s = type { i32, %struct.ZSTD_compressionParameters, %struct.ZSTD_frameParameters, i32, i32, i32, i32, i32, i32, %struct.ldmParams_t, %struct.ZSTD_customMem }
%struct.ZSTD_compressionParameters = type { i32, i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_frameParameters = type { i32, i32, i32 }
%struct.ldmParams_t = type { i32, i32, i32, i32, i32, i32 }
%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 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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @ZSTD_highbit32(i32 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_compressBegin_internal(ptr noundef, ptr noundef, i64 noundef, i32 noundef, i32 noundef, ptr noundef, ptr noundef byval(%struct.ZSTD_CCtx_params_s) align 8, i64 noundef, i32 noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
declare dso_local void @ZSTD_getCParamsFromCDict(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_compressionParameters) align 4, ptr noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_compressBegin_usingCDict_advanced(ptr noundef %0, ptr noundef %1, i64 %2, i32 %3, i64 noundef %4) local_unnamed_addr #3 {
  %6 = alloca %struct.ZSTD_CCtx_params_s, align 8
  %7 = icmp eq ptr %1, null
  br i1 %7, label %26, label %8

8:                                                ; preds = %5
  call void @llvm.lifetime.start.p0(i64 120, ptr nonnull %6) #5
  %9 = getelementptr inbounds i8, ptr %0, i64 16
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(120) %6, ptr noundef nonnull align 8 dereferenceable(120) %9, i64 120, i1 false), !tbaa.struct !5
  %10 = getelementptr inbounds i8, ptr %6, i64 4
  call void @ZSTD_getCParamsFromCDict(ptr dead_on_unwind nonnull writable sret(%struct.ZSTD_compressionParameters) align 4 %10, ptr noundef nonnull %1)
  %.not = icmp eq i64 %4, -1
  br i1 %.not, label %23, label %11

11:                                               ; preds = %8
  %12 = icmp ugt i64 %4, 1
  br i1 %12, label %13, label %19

13:                                               ; preds = %11
  %14 = call i64 @llvm.umin.i64(i64 %4, i64 524288)
  %15 = trunc nuw nsw i64 %14 to i32
  %16 = add nsw i32 %15, -1
  %17 = call i32 @ZSTD_highbit32(i32 noundef %16)
  %18 = add i32 %17, 1
  br label %19

19:                                               ; preds = %11, %13
  %20 = phi i32 [ %18, %13 ], [ 1, %11 ]
  %21 = load i32, ptr %10, align 4
  %22 = call i32 @llvm.umax.i32(i32 %21, i32 %20)
  store i32 %22, ptr %10, align 4, !tbaa !12
  br label %23

23:                                               ; preds = %19, %8
  %24 = getelementptr inbounds i8, ptr %6, i64 32
  store i64 %2, ptr %24, align 8
  %.sroa.213.0..sroa_idx = getelementptr inbounds i8, ptr %6, i64 40
  store i32 %3, ptr %.sroa.213.0..sroa_idx, align 8, !tbaa !6
  %25 = call i64 @ZSTD_compressBegin_internal(ptr noundef nonnull %0, ptr noundef null, i64 noundef 0, i32 noundef 0, i32 noundef 0, ptr noundef nonnull %1, ptr noundef nonnull byval(%struct.ZSTD_CCtx_params_s) align 8 %6, i64 noundef %4, i32 noundef 0)
  call void @llvm.lifetime.end.p0(i64 120, ptr nonnull %6) #5
  br label %26

26:                                               ; preds = %5, %23
  %.0 = phi i64 [ %25, %23 ], [ -32, %5 ]
  ret i64 %.0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umin.i64(i64, i64) #4

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.umax.i32(i32, i32) #4

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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #5 = { 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 4, !6, i64 4, i64 4, !6, i64 8, i64 4, !6, i64 12, i64 4, !6, i64 16, i64 4, !6, i64 20, i64 4, !6, i64 24, i64 4, !6, i64 28, i64 4, !6, i64 32, i64 4, !6, i64 36, i64 4, !6, i64 40, i64 4, !6, i64 44, i64 4, !6, i64 48, i64 4, !6, i64 52, i64 4, !6, i64 56, i64 4, !6, i64 60, i64 4, !6, i64 64, i64 4, !6, i64 68, i64 4, !6, i64 72, i64 4, !6, i64 76, i64 4, !6, i64 80, i64 4, !6, i64 84, i64 4, !6, i64 88, i64 4, !6, i64 96, i64 8, !10, i64 104, i64 8, !10, i64 112, i64 8, !10}
!6 = !{!7, !7, i64 0}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !11, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!13, !7, i64 4}
!13 = !{!"ZSTD_CCtx_params_s", !7, i64 0, !14, i64 4, !15, i64 32, !7, i64 44, !7, i64 48, !7, i64 52, !7, i64 56, !7, i64 60, !7, i64 64, !16, i64 68, !17, i64 96}
!14 = !{!"", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16, !7, i64 20, !7, i64 24}
!15 = !{!"", !7, i64 0, !7, i64 4, !7, i64 8}
!16 = !{!"", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16, !7, i64 20}
!17 = !{!"", !11, i64 0, !11, i64 8, !11, i64 16}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,SROAPass,SimplifyCFGPass