; LLVM IR from philanc/luazen :: src/lzma (LzmaDec)

; 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._CLzmaProps = type { i8, i8, i8, i8, i32 }
%struct.CLzmaDec = type { %struct._CLzmaProps, ptr, ptr, ptr, i64, i64, ptr, i32, i32, i32, i32, [4 x i32], i32, i32, i32, i32, [20 x i8] }

; 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 @LzmaProps_Decode(ptr noundef, ptr noundef, i32 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @LzmaDec_AllocateProbs(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) #2 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca %struct._CLzmaProps, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %14 = load ptr, ptr %7, align 8, !tbaa !5
  %15 = load i32, ptr %8, align 4, !tbaa !9
  %16 = call i32 @LzmaProps_Decode(ptr noundef %10, ptr noundef %14, i32 noundef %15)
  store i32 %16, ptr %11, align 4, !tbaa !9
  %17 = load i32, ptr %11, align 4, !tbaa !9
  %18 = icmp ne i32 %17, 0
  br i1 %18, label %19, label %21

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

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

22:                                               ; preds = %21, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  %23 = load i32, ptr %12, align 4
  switch i32 %23, label %38 [
    i32 0, label %24
  ]

24:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #3
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = load ptr, ptr %9, align 8, !tbaa !5
  %27 = call i32 @LzmaDec_AllocateProbs2(ptr noundef %25, ptr noundef %10, ptr noundef %26)
  store i32 %27, ptr %13, align 4, !tbaa !9
  %28 = load i32, ptr %13, align 4, !tbaa !9
  %29 = icmp ne i32 %28, 0
  br i1 %29, label %30, label %32

30:                                               ; preds = %24
  %31 = load i32, ptr %13, align 4, !tbaa !9
  store i32 %31, ptr %5, align 4
  store i32 1, ptr %12, align 4
  br label %33

32:                                               ; preds = %24
  store i32 0, ptr %12, align 4
  br label %33

33:                                               ; preds = %32, %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #3
  %34 = load i32, ptr %12, align 4
  switch i32 %34, label %38 [
    i32 0, label %35
  ]

35:                                               ; preds = %33
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.CLzmaDec, ptr %36, i32 0, i32 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %37, ptr align 4 %10, i64 8, i1 false), !tbaa.struct !11
  store i32 0, ptr %5, align 4
  store i32 1, ptr %12, align 4
  br label %38

38:                                               ; preds = %35, %33, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  %39 = load i32, ptr %5, align 4
  ret i32 %39
}

; Function Attrs: nounwind uwtable
declare hidden i32 @LzmaDec_AllocateProbs2(ptr noundef, ptr noundef, 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 = { 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 = !{!"int", !7, i64 0}
!11 = !{i64 0, i64 1, !12, i64 1, i64 1, !12, i64 2, i64 1, !12, i64 3, i64 1, !12, i64 4, i64 4, !9}
!12 = !{!7, !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"

%struct._CLzmaProps = type { i8, i8, i8, i8, i32 }

; 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 i32 @LzmaProps_Decode(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i32 @LzmaDec_AllocateProbs(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) local_unnamed_addr #1 {
  %5 = alloca %struct._CLzmaProps, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #2
  %6 = call i32 @LzmaProps_Decode(ptr noundef nonnull %5, ptr noundef %1, i32 noundef %2)
  %.not = icmp eq i32 %6, 0
  br i1 %.not, label %7, label %11

7:                                                ; preds = %4
  %8 = call i32 @LzmaDec_AllocateProbs2(ptr noundef %0, ptr noundef nonnull %5, ptr noundef %3)
  %.not14 = icmp eq i32 %8, 0
  br i1 %.not14, label %9, label %11

9:                                                ; preds = %7
  %10 = load i64, ptr %5, align 8
  store i64 %10, ptr %0, align 8
  br label %11

11:                                               ; preds = %7, %4, %9
  %.2 = phi i32 [ 0, %9 ], [ %8, %7 ], [ %6, %4 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #2
  ret i32 %.2
}

; Function Attrs: nounwind uwtable
declare hidden i32 @LzmaDec_AllocateProbs2(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #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: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass