; LLVM IR from TobiasKozel/VAE :: external/portaudio/src/common (pa_front)

; 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.PaUtilStreamRepresentation = type { i64, ptr, ptr, ptr, ptr, ptr, %struct.PaStreamInfo }
%struct.PaStreamInfo = type { i32, double, double, double }
%struct.PaUtilStreamInterface = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }

; 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 @PaUtil_ValidateStreamPointer(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @Pa_ReadStream(ptr noundef %0, ptr noundef %1, i64 noundef %2) #1 {
  %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
  store i64 %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = call i32 @PaUtil_ValidateStreamPointer(ptr noundef %8)
  store i32 %9, ptr %7, align 4, !tbaa !11
  %10 = load i32, ptr %7, align 4, !tbaa !11
  %11 = icmp eq i32 %10, 0
  br i1 %11, label %12, label %48

12:                                               ; preds = %3
  %13 = load i64, ptr %6, align 8, !tbaa !9
  %14 = icmp eq i64 %13, 0
  br i1 %14, label %15, label %16

15:                                               ; preds = %12
  store i32 0, ptr %7, align 4, !tbaa !11
  br label %47

16:                                               ; preds = %12
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = icmp eq ptr %17, null
  br i1 %18, label %19, label %20

19:                                               ; preds = %16
  store i32 -9972, ptr %7, align 4, !tbaa !11
  br label %46

20:                                               ; preds = %16
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.PaUtilStreamRepresentation, ptr %21, i32 0, i32 2
  %23 = load ptr, ptr %22, align 8, !tbaa !13
  %24 = getelementptr inbounds %struct.PaUtilStreamInterface, ptr %23, i32 0, i32 4
  %25 = load ptr, ptr %24, align 8, !tbaa !17
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = call i32 %25(ptr noundef %26)
  store i32 %27, ptr %7, align 4, !tbaa !11
  %28 = load i32, ptr %7, align 4, !tbaa !11
  %29 = icmp eq i32 %28, 0
  br i1 %29, label %30, label %40

30:                                               ; preds = %20
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.PaUtilStreamRepresentation, ptr %31, i32 0, i32 2
  %33 = load ptr, ptr %32, align 8, !tbaa !13
  %34 = getelementptr inbounds %struct.PaUtilStreamInterface, ptr %33, i32 0, i32 8
  %35 = load ptr, ptr %34, align 8, !tbaa !19
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = load i64, ptr %6, align 8, !tbaa !9
  %39 = call i32 %35(ptr noundef %36, ptr noundef %37, i64 noundef %38)
  store i32 %39, ptr %7, align 4, !tbaa !11
  br label %45

40:                                               ; preds = %20
  %41 = load i32, ptr %7, align 4, !tbaa !11
  %42 = icmp eq i32 %41, 1
  br i1 %42, label %43, label %44

43:                                               ; preds = %40
  store i32 -9983, ptr %7, align 4, !tbaa !11
  br label %44

44:                                               ; preds = %43, %40
  br label %45

45:                                               ; preds = %44, %30
  br label %46

46:                                               ; preds = %45, %19
  br label %47

47:                                               ; preds = %46, %15
  br label %48

48:                                               ; preds = %47, %3
  %49 = load i32, ptr %7, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret i32 %49
}

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 = !{!"int", !7, i64 0}
!13 = !{!14, !6, i64 16}
!14 = !{!"PaUtilStreamRepresentation", !10, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !15, i64 48}
!15 = !{!"PaStreamInfo", !12, i64 0, !16, i64 8, !16, i64 16, !16, i64 24}
!16 = !{!"double", !7, i64 0}
!17 = !{!18, !6, i64 32}
!18 = !{!"", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !6, i64 88}
!19 = !{!18, !6, i64 64}


; 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 @PaUtil_ValidateStreamPointer(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @Pa_ReadStream(ptr noundef %0, ptr noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = tail call i32 @PaUtil_ValidateStreamPointer(ptr noundef %0)
  %5 = icmp eq i32 %4, 0
  br i1 %5, label %6, label %24

6:                                                ; preds = %3
  %7 = icmp eq i64 %2, 0
  br i1 %7, label %24, label %8

8:                                                ; preds = %6
  %9 = icmp eq ptr %1, null
  br i1 %9, label %24, label %10

10:                                               ; preds = %8
  %11 = getelementptr inbounds i8, ptr %0, i64 16
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %12, i64 32
  %14 = load ptr, ptr %13, align 8, !tbaa !14
  %15 = tail call i32 %14(ptr noundef %0) #1
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %17, label %22

17:                                               ; preds = %10
  %18 = load ptr, ptr %11, align 8, !tbaa !5
  %19 = getelementptr inbounds i8, ptr %18, i64 64
  %20 = load ptr, ptr %19, align 8, !tbaa !16
  %21 = tail call i32 %20(ptr noundef nonnull %0, ptr noundef nonnull %1, i64 noundef %2) #1
  br label %24

22:                                               ; preds = %10
  %23 = icmp eq i32 %15, 1
  %spec.store.select = select i1 %23, i32 -9983, i32 %15
  br label %24

24:                                               ; preds = %8, %6, %17, %22, %3
  %.0 = phi i32 [ %21, %17 ], [ %spec.store.select, %22 ], [ %4, %3 ], [ 0, %6 ], [ -9972, %8 ]
  ret i32 %.0
}

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" }
attributes #1 = { 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, !10, i64 16}
!6 = !{!"PaUtilStreamRepresentation", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !11, i64 48}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"PaStreamInfo", !12, i64 0, !13, i64 8, !13, i64 16, !13, i64 24}
!12 = !{!"int", !8, i64 0}
!13 = !{!"double", !8, i64 0}
!14 = !{!15, !10, i64 32}
!15 = !{!"", !10, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48, !10, i64 56, !10, i64 64, !10, i64 72, !10, i64 80, !10, i64 88}
!16 = !{!15, !10, i64 64}


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