; LLVM IR from VoidRune/Audio-engine :: src (minivorbis)

; 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.ogg_sync_state = type { ptr, i32, i32, i32, i32, i32, 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 i32 @ogg_sync_check(ptr noundef) #1

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

; Function Attrs: nounwind uwtable
define dso_local i32 @ogg_sync_pageout(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = call i32 @ogg_sync_check(ptr noundef %8)
  %10 = icmp ne i32 %9, 0
  br i1 %10, label %11, label %12

11:                                               ; preds = %2
  store i32 0, ptr %3, align 4
  br label %36

12:                                               ; preds = %2
  br label %13

13:                                               ; preds = %35, %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = call i64 @ogg_sync_pageseek(ptr noundef %14, ptr noundef %15)
  store i64 %16, ptr %6, align 8, !tbaa !9
  %17 = load i64, ptr %6, align 8, !tbaa !9
  %18 = icmp sgt i64 %17, 0
  br i1 %18, label %19, label %20

19:                                               ; preds = %13
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %33

20:                                               ; preds = %13
  %21 = load i64, ptr %6, align 8, !tbaa !9
  %22 = icmp eq i64 %21, 0
  br i1 %22, label %23, label %24

23:                                               ; preds = %20
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %33

24:                                               ; preds = %20
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.ogg_sync_state, ptr %25, i32 0, i32 4
  %27 = load i32, ptr %26, align 4, !tbaa !11
  %28 = icmp ne i32 %27, 0
  br i1 %28, label %32, label %29

29:                                               ; preds = %24
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.ogg_sync_state, ptr %30, i32 0, i32 4
  store i32 1, ptr %31, align 4, !tbaa !11
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %33

32:                                               ; preds = %24
  store i32 0, ptr %7, align 4
  br label %33

33:                                               ; preds = %32, %29, %23, %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %34 = load i32, ptr %7, align 4
  switch i32 %34, label %38 [
    i32 0, label %35
    i32 1, label %36
  ]

35:                                               ; preds = %33
  br label %13

36:                                               ; preds = %33, %11
  %37 = load i32, ptr %3, align 4
  ret i32 %37

38:                                               ; preds = %33
  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, !13, i64 20}
!12 = !{!"", !6, i64 0, !13, i64 8, !13, i64 12, !13, i64 16, !13, i64 20, !13, i64 24, !13, i64 28}
!13 = !{!"int", !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"

; Function Attrs: nounwind uwtable
declare dso_local i32 @ogg_sync_check(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @ogg_sync_pageseek(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @ogg_sync_pageout(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @ogg_sync_check(ptr noundef %0)
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %.preheader, label %.thread

.preheader:                                       ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 20
  br label %5

5:                                                ; preds = %.preheader, %10
  %6 = tail call i64 @ogg_sync_pageseek(ptr noundef %0, ptr noundef %1)
  %7 = icmp sgt i64 %6, 0
  br i1 %7, label %.thread, label %8

8:                                                ; preds = %5
  %9 = icmp eq i64 %6, 0
  br i1 %9, label %.thread, label %10

10:                                               ; preds = %8
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %.not10 = icmp eq i32 %11, 0
  br i1 %.not10, label %12, label %5

12:                                               ; preds = %10
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %.thread

.thread:                                          ; preds = %8, %5, %12, %2
  %.2 = phi i32 [ 0, %2 ], [ -1, %12 ], [ 1, %5 ], [ 0, %8 ]
  ret i32 %.2
}

attributes #0 = { 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, !10, i64 20}
!6 = !{!"", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass