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

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_checkCParams(ptr noundef byval(%struct.ZSTD_compressionParameters) align 8) #1

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

; Function Attrs: nounwind uwtable
declare hidden void @ZSTD_assignParamsToCCtxParams(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_CCtx_params_s) align 8, ptr noundef byval(%struct.ZSTD_CCtx_params_s) align 8, ptr noundef byval(%struct.ZSTD_parameters) align 8) #1

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_initCStream_internal(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef byval(%struct.ZSTD_CCtx_params_s) align 8, i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_initCStream_advanced(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef byval(%struct.ZSTD_parameters) align 8 %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 i64, align 8
  %11 = alloca i64, align 8
  %12 = alloca i32, align 4
  %13 = alloca %struct.ZSTD_CCtx_params_s, align 8
  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 i64 %4, ptr %10, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  %14 = getelementptr inbounds %struct.ZSTD_parameters, ptr %3, i32 0, i32 0
  %15 = call i64 @ZSTD_checkCParams(ptr noundef byval(%struct.ZSTD_compressionParameters) align 8 %14)
  store i64 %15, ptr %11, align 8, !tbaa !9
  %16 = load i64, ptr %11, align 8, !tbaa !9
  %17 = call i32 @ERR_isError(i64 noundef %16)
  %18 = icmp ne i32 %17, 0
  br i1 %18, label %19, label %21

19:                                               ; preds = %5
  %20 = load i64, ptr %11, align 8, !tbaa !9
  store i64 %20, ptr %6, align 8
  store i32 1, ptr %12, align 4
  br label %22

21:                                               ; preds = %5
  store i32 0, ptr %12, align 4
  br label %22

22:                                               ; preds = %21, %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  %23 = load i32, ptr %12, align 4
  switch i32 %23, label %43 [
    i32 0, label %24
    i32 1, label %41
  ]

24:                                               ; preds = %22
  %25 = load i64, ptr %10, align 8, !tbaa !11
  %26 = icmp eq i64 %25, 0
  br i1 %26, label %27, label %33

27:                                               ; preds = %24
  %28 = getelementptr inbounds %struct.ZSTD_parameters, ptr %3, i32 0, i32 1
  %29 = getelementptr inbounds %struct.ZSTD_frameParameters, ptr %28, i32 0, i32 0
  %30 = load i32, ptr %29, align 4, !tbaa !13
  %31 = icmp eq i32 %30, 0
  br i1 %31, label %32, label %33

32:                                               ; preds = %27
  store i64 -1, ptr %10, align 8, !tbaa !11
  br label %33

33:                                               ; preds = %32, %27, %24
  call void @llvm.lifetime.start.p0(i64 120, ptr %13) #2
  %34 = load ptr, ptr %7, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.ZSTD_CCtx_s, ptr %34, i32 0, i32 3
  call void @ZSTD_assignParamsToCCtxParams(ptr dead_on_unwind writable sret(%struct.ZSTD_CCtx_params_s) align 8 %13, ptr noundef byval(%struct.ZSTD_CCtx_params_s) align 8 %35, ptr noundef byval(%struct.ZSTD_parameters) align 8 %3)
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  %37 = load ptr, ptr %8, align 8, !tbaa !5
  %38 = load i64, ptr %9, align 8, !tbaa !9
  %39 = load i64, ptr %10, align 8, !tbaa !11
  %40 = call i64 @ZSTD_initCStream_internal(ptr noundef %36, ptr noundef %37, i64 noundef %38, ptr noundef null, ptr noundef byval(%struct.ZSTD_CCtx_params_s) align 8 %13, i64 noundef %39)
  store i64 %40, ptr %6, align 8
  store i32 1, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 120, ptr %13) #2
  br label %41

41:                                               ; preds = %33, %22
  %42 = load i64, ptr %6, align 8
  ret i64 %42

43:                                               ; preds = %22
  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}
!11 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = !{!14, !16, i64 28}
!14 = !{!"", !15, i64 0, !17, i64 28}
!15 = !{!"", !16, i64 0, !16, i64 4, !16, i64 8, !16, i64 12, !16, i64 16, !16, i64 20, !16, i64 24}
!16 = !{!"int", !7, i64 0}
!17 = !{!"", !16, i64 0, !16, i64 4, !16, i64 8}


; 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_compressionParameters = type { i32, i32, i32, i32, i32, i32, i32 }
%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_frameParameters = type { i32, i32, i32 }
%struct.ldmParams_t = type { i32, i32, i32, i32, i32, i32 }
%struct.ZSTD_customMem = type { ptr, ptr, ptr }
%struct.ZSTD_parameters = type { %struct.ZSTD_compressionParameters, %struct.ZSTD_frameParameters }

; 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: nounwind uwtable
declare dso_local i64 @ZSTD_checkCParams(ptr noundef byval(%struct.ZSTD_compressionParameters) align 8) local_unnamed_addr #1

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

; Function Attrs: nounwind uwtable
declare hidden void @ZSTD_assignParamsToCCtxParams(ptr dead_on_unwind noalias writable sret(%struct.ZSTD_CCtx_params_s) align 8, ptr noundef byval(%struct.ZSTD_CCtx_params_s) align 8, ptr noundef byval(%struct.ZSTD_parameters) align 8) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i64 @ZSTD_initCStream_internal(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef byval(%struct.ZSTD_CCtx_params_s) align 8, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i64 @ZSTD_initCStream_advanced(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef byval(%struct.ZSTD_parameters) align 8 %3, i64 noundef %4) local_unnamed_addr #1 {
  %6 = alloca %struct.ZSTD_CCtx_params_s, align 8
  %7 = tail call i64 @ZSTD_checkCParams(ptr noundef nonnull byval(%struct.ZSTD_compressionParameters) align 8 %3)
  %8 = tail call i32 @ERR_isError(i64 noundef %7)
  %.not.not = icmp eq i32 %8, 0
  br i1 %.not.not, label %9, label %16

9:                                                ; preds = %5
  %10 = icmp eq i64 %4, 0
  %11 = getelementptr inbounds i8, ptr %3, i64 28
  %12 = load i32, ptr %11, align 4
  %13 = icmp eq i32 %12, 0
  %or.cond = select i1 %10, i1 %13, i1 false
  %spec.store.select = select i1 %or.cond, i64 -1, i64 %4
  call void @llvm.lifetime.start.p0(i64 120, ptr nonnull %6) #2
  %14 = getelementptr inbounds i8, ptr %0, i64 16
  call void @ZSTD_assignParamsToCCtxParams(ptr dead_on_unwind nonnull writable sret(%struct.ZSTD_CCtx_params_s) align 8 %6, ptr noundef nonnull byval(%struct.ZSTD_CCtx_params_s) align 8 %14, ptr noundef nonnull byval(%struct.ZSTD_parameters) align 8 %3)
  %15 = call i64 @ZSTD_initCStream_internal(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef null, ptr noundef nonnull byval(%struct.ZSTD_CCtx_params_s) align 8 %6, i64 noundef %spec.store.select)
  call void @llvm.lifetime.end.p0(i64 120, ptr nonnull %6) #2
  br label %16

16:                                               ; preds = %5, %9
  %.1 = phi i64 [ %7, %5 ], [ %15, %9 ]
  ret i64 %.1
}

attributes #0 = { mustprogress 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)"}


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