; LLVM IR from aagdev/mlimgsynth :: src/ccommon (stream)

; 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.Stream = type { ptr, ptr, ptr, ptr, ptr, %struct.StreamInt, i64, i32 }
%struct.StreamInt = type { [3 x ptr] }
%struct.StreamClass = type { 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 @stream_flush(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @stream_sync(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  br label %7

7:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = call i32 @stream_flush(ptr noundef %8)
  store i32 %9, ptr %4, align 4, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = icmp slt i32 %10, 0
  br i1 %11, label %12, label %14

12:                                               ; preds = %7
  %13 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %13, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %15

14:                                               ; preds = %7
  store i32 0, ptr %5, align 4
  br label %15

15:                                               ; preds = %14, %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %16 = load i32, ptr %5, align 4
  switch i32 %16, label %47 [
    i32 0, label %17
    i32 1, label %45
  ]

17:                                               ; preds = %15
  br label %18

18:                                               ; preds = %17
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.Stream, ptr %19, i32 0, i32 4
  %21 = load ptr, ptr %20, align 8, !tbaa !11
  %22 = getelementptr inbounds %struct.StreamClass, ptr %21, i32 0, i32 4
  %23 = load ptr, ptr %22, align 8, !tbaa !15
  %24 = icmp ne ptr %23, null
  br i1 %24, label %25, label %44

25:                                               ; preds = %18
  br label %26

26:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.Stream, ptr %27, i32 0, i32 4
  %29 = load ptr, ptr %28, align 8, !tbaa !11
  %30 = getelementptr inbounds %struct.StreamClass, ptr %29, i32 0, i32 4
  %31 = load ptr, ptr %30, align 8, !tbaa !15
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.Stream, ptr %32, i32 0, i32 5
  %34 = call i32 %31(ptr noundef %33)
  store i32 %34, ptr %6, align 4, !tbaa !9
  %35 = load i32, ptr %6, align 4, !tbaa !9
  %36 = icmp slt i32 %35, 0
  br i1 %36, label %37, label %39

37:                                               ; preds = %26
  %38 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %38, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %40

39:                                               ; preds = %26
  store i32 0, ptr %5, align 4
  br label %40

40:                                               ; preds = %39, %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %41 = load i32, ptr %5, align 4
  switch i32 %41, label %47 [
    i32 0, label %42
    i32 1, label %45
  ]

42:                                               ; preds = %40
  br label %43

43:                                               ; preds = %42
  br label %44

44:                                               ; preds = %43, %18
  store i32 0, ptr %2, align 4
  br label %45

45:                                               ; preds = %44, %40, %15
  %46 = load i32, ptr %2, align 4
  ret i32 %46

47:                                               ; preds = %40, %15
  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 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 32}
!12 = !{!"Stream", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !13, i64 40, !14, i64 64, !10, i64 72}
!13 = !{!"StreamInt", !7, i64 0}
!14 = !{!"long", !7, i64 0}
!15 = !{!16, !6, i64 32}
!16 = !{!"StreamClass", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48}


; 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 @stream_flush(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @stream_sync(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call i32 @stream_flush(ptr noundef %0)
  %3 = icmp sgt i32 %2, -1
  br i1 %3, label %4, label %14

4:                                                ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 32
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %6, i64 32
  %8 = load ptr, ptr %7, align 8, !tbaa !13
  %.not = icmp eq ptr %8, null
  br i1 %.not, label %13, label %9

9:                                                ; preds = %4
  %10 = getelementptr inbounds i8, ptr %0, i64 40
  %11 = tail call i32 %8(ptr noundef nonnull %10) #1
  %12 = icmp sgt i32 %11, -1
  br i1 %12, label %13, label %14

13:                                               ; preds = %9, %4
  br label %14

14:                                               ; preds = %9, %1, %13
  %.2 = phi i32 [ %2, %1 ], [ %11, %9 ], [ 0, %13 ]
  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" }
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, !7, i64 32}
!6 = !{!"Stream", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !10, i64 40, !11, i64 64, !12, i64 72}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"StreamInt", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!"int", !8, i64 0}
!13 = !{!14, !7, i64 32}
!14 = !{!"StreamClass", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !7, i64 40, !7, i64 48}


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