; LLVM IR from golems/ach :: benchmark/src (udp_buffer)

; 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.sockaddr_in = type { i16, i16, %struct.in_addr, [8 x i8] }
%struct.in_addr = type { i32 }
%struct.pollfd = type { i32, i16, i16 }

@.str = external hidden unnamed_addr constant [24 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [10 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca %struct.sockaddr_in, align 4
  %9 = alloca i32, align 4
  %10 = alloca i64, align 8
  %11 = alloca [1 x %struct.pollfd], align 4
  %12 = alloca i32, align 4
  %13 = alloca i64, align 8
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = load ptr, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #7
  %16 = call i32 @socket(i32 noundef 2, i32 noundef 2, i32 noundef 17) #7
  store i32 %16, ptr %6, align 4, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = icmp slt i32 %17, 0
  br i1 %18, label %19, label %20

19:                                               ; preds = %2
  call void @perror(ptr noundef @.str)
  call void @abort() #8
  unreachable

20:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #7
  %21 = call i32 @socket(i32 noundef 2, i32 noundef 2, i32 noundef 17) #7
  store i32 %21, ptr %7, align 4, !tbaa !5
  %22 = load i32, ptr %7, align 4, !tbaa !5
  %23 = icmp slt i32 %22, 0
  br i1 %23, label %24, label %25

24:                                               ; preds = %20
  call void @perror(ptr noundef @.str)
  call void @abort() #8
  unreachable

25:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 16, ptr %8) #7
  call void @llvm.memset.p0.i64(ptr align 4 %8, i8 0, i64 16, i1 false)
  %26 = getelementptr inbounds %struct.sockaddr_in, ptr %8, i32 0, i32 0
  store i16 2, ptr %26, align 4, !tbaa !11
  %27 = call i32 @inet_addr(ptr noundef @.str.1) #7
  %28 = getelementptr inbounds %struct.sockaddr_in, ptr %8, i32 0, i32 2
  %29 = getelementptr inbounds %struct.in_addr, ptr %28, i32 0, i32 0
  store i32 %27, ptr %29, align 4, !tbaa !15
  %30 = call zeroext i16 @__bswap_16(i16 noundef zeroext 8070)
  %31 = getelementptr inbounds %struct.sockaddr_in, ptr %8, i32 0, i32 1
  store i16 %30, ptr %31, align 2, !tbaa !16
  %32 = load i32, ptr %7, align 4, !tbaa !5
  %33 = call i32 @bind(i32 noundef %32, ptr noundef %8, i32 noundef 16) #7
  %34 = icmp slt i32 %33, 0
  br i1 %34, label %35, label %36

35:                                               ; preds = %25
  call void @perror(ptr noundef @.str.2)
  call void @abort() #8
  unreachable

36:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #7
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %37

37:                                               ; preds = %47, %36
  %38 = load i32, ptr %9, align 4, !tbaa !5
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %9, align 4, !tbaa !5
  %40 = icmp slt i32 %38, 1000
  br i1 %40, label %41, label %48

41:                                               ; preds = %37
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #7
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = call i64 @sendto(i32 noundef %42, ptr noundef %9, i64 noundef 4, i32 noundef 0, ptr noundef %8, i32 noundef 16)
  store i64 %43, ptr %10, align 8, !tbaa !17
  %44 = load i64, ptr %10, align 8, !tbaa !17
  %45 = icmp ne i64 4, %44
  br i1 %45, label %46, label %47

46:                                               ; preds = %41
  call void @perror(ptr noundef @.str.3)
  call void @abort() #8
  unreachable

47:                                               ; preds = %41
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #7
  br label %37, !llvm.loop !19

48:                                               ; preds = %37
  %49 = load i32, ptr %9, align 4, !tbaa !5
  %50 = sub nsw i32 %49, 1
  %51 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %50)
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #7
  %52 = getelementptr inbounds %struct.pollfd, ptr %11, i32 0, i32 0
  %53 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %53, ptr %52, align 4, !tbaa !21
  %54 = getelementptr inbounds %struct.pollfd, ptr %11, i32 0, i32 1
  store i16 1, ptr %54, align 4, !tbaa !23
  %55 = getelementptr inbounds %struct.pollfd, ptr %11, i32 0, i32 2
  store i16 0, ptr %55, align 2, !tbaa !24
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #7
  br label %56

56:                                               ; preds = %70, %48
  %57 = getelementptr inbounds [1 x %struct.pollfd], ptr %11, i64 0, i64 0
  %58 = call i32 @poll(ptr noundef %57, i64 noundef 1, i32 noundef 0)
  store i32 %58, ptr %12, align 4, !tbaa !5
  %59 = icmp ne i32 %58, 0
  br i1 %59, label %60, label %73

60:                                               ; preds = %56
  %61 = load i32, ptr %12, align 4, !tbaa !5
  %62 = icmp slt i32 %61, 0
  br i1 %62, label %63, label %64

63:                                               ; preds = %60
  call void @perror(ptr noundef @.str.5)
  call void @abort() #8
  unreachable

64:                                               ; preds = %60
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #7
  %65 = load i32, ptr %7, align 4, !tbaa !5
  %66 = call i64 @recvfrom(i32 noundef %65, ptr noundef %9, i64 noundef 4, i32 noundef 0, ptr noundef null, ptr noundef null)
  store i64 %66, ptr %13, align 8, !tbaa !17
  %67 = load i64, ptr %13, align 8, !tbaa !17
  %68 = icmp ne i64 4, %67
  br i1 %68, label %69, label %70

69:                                               ; preds = %64
  call void @perror(ptr noundef @.str.6)
  call void @abort() #8
  unreachable

70:                                               ; preds = %64
  %71 = load i32, ptr %9, align 4, !tbaa !5
  %72 = call i32 (ptr, ...) @printf(ptr noundef @.str.7, i32 noundef %71)
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #7
  br label %56, !llvm.loop !25

73:                                               ; preds = %56
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 16, ptr %8) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  %74 = load i32, ptr %3, align 4
  ret i32 %74
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind
declare i32 @socket(i32 noundef, i32 noundef, i32 noundef) #2

declare void @perror(ptr noundef) #3

; Function Attrs: noreturn nounwind
declare void @abort() #4

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #5

; Function Attrs: nounwind
declare i32 @inet_addr(ptr noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i16 @__bswap_16(i16 noundef zeroext) #6

; Function Attrs: nounwind
declare i32 @bind(i32 noundef, ptr noundef, i32 noundef) #2

declare i64 @sendto(i32 noundef, ptr noundef, i64 noundef, i32 noundef, ptr noundef, i32 noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

declare i32 @printf(ptr noundef, ...) #3

declare i32 @poll(ptr noundef, i64 noundef, i32 noundef) #3

declare i64 @recvfrom(i32 noundef, ptr noundef, i64 noundef, i32 noundef, ptr noundef, ptr noundef) #3

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind "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 = { "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 #4 = { noreturn nounwind "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 #5 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #6 = { inlinehint 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 #7 = { nounwind }
attributes #8 = { noreturn 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !13, i64 0}
!12 = !{!"sockaddr_in", !13, i64 0, !13, i64 2, !14, i64 4, !7, i64 8}
!13 = !{!"short", !7, i64 0}
!14 = !{!"in_addr", !6, i64 0}
!15 = !{!12, !6, i64 4}
!16 = !{!12, !13, i64 2}
!17 = !{!18, !18, i64 0}
!18 = !{!"long", !7, i64 0}
!19 = distinct !{!19, !20}
!20 = !{!"llvm.loop.mustprogress"}
!21 = !{!22, !6, i64 0}
!22 = !{!"pollfd", !6, i64 0, !13, i64 4, !13, i64 6}
!23 = !{!22, !13, i64 4}
!24 = !{!22, !13, i64 6}
!25 = distinct !{!25, !20}


; 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.sockaddr_in = type { i16, i16, %struct.in_addr, [8 x i8] }
%struct.in_addr = type { i32 }
%struct.pollfd = type { i32, i16, i16 }

@.str = external hidden unnamed_addr constant [24 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [10 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %3 = alloca %struct.sockaddr_in, align 4
  %4 = alloca i32, align 4
  %5 = alloca [1 x %struct.pollfd], align 4
  %6 = tail call i32 @socket(i32 noundef 2, i32 noundef 2, i32 noundef 17) #7
  %7 = icmp slt i32 %6, 0
  br i1 %7, label %8, label %9

8:                                                ; preds = %2
  tail call void @perror(ptr noundef nonnull @.str) #8
  tail call void @abort() #9
  unreachable

9:                                                ; preds = %2
  %10 = tail call i32 @socket(i32 noundef 2, i32 noundef 2, i32 noundef 17) #7
  %11 = icmp slt i32 %10, 0
  br i1 %11, label %12, label %13

12:                                               ; preds = %9
  tail call void @perror(ptr noundef nonnull @.str) #8
  tail call void @abort() #9
  unreachable

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %3) #7
  %14 = getelementptr inbounds i8, ptr %3, i64 8
  store i64 0, ptr %14, align 4
  store i16 2, ptr %3, align 4, !tbaa !5
  %15 = tail call i32 @inet_addr(ptr noundef nonnull @.str.1) #7
  %16 = getelementptr inbounds i8, ptr %3, i64 4
  store i32 %15, ptr %16, align 4, !tbaa !12
  %17 = tail call zeroext i16 @__bswap_16(i16 noundef zeroext 8070)
  %18 = getelementptr inbounds i8, ptr %3, i64 2
  store i16 %17, ptr %18, align 2, !tbaa !13
  %19 = call i32 @bind(i32 noundef %10, ptr noundef nonnull %3, i32 noundef 16) #7
  %20 = icmp slt i32 %19, 0
  br i1 %20, label %21, label %22

21:                                               ; preds = %13
  call void @perror(ptr noundef nonnull @.str.2) #8
  call void @abort() #9
  unreachable

22:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #7
  store i32 1, ptr %4, align 4, !tbaa !14
  br label %25

thread-pre-split:                                 ; preds = %25
  %.pr = load i32, ptr %4, align 4, !tbaa !14
  %23 = add nsw i32 %.pr, 1
  store i32 %23, ptr %4, align 4, !tbaa !14
  %24 = icmp slt i32 %.pr, 1000
  br i1 %24, label %25, label %28

25:                                               ; preds = %22, %thread-pre-split
  %26 = call i64 @sendto(i32 noundef %6, ptr noundef nonnull %4, i64 noundef 4, i32 noundef 0, ptr noundef nonnull %3, i32 noundef 16) #7
  %.not15 = icmp eq i64 %26, 4
  br i1 %.not15, label %thread-pre-split, label %27, !llvm.loop !15

27:                                               ; preds = %25
  call void @perror(ptr noundef nonnull @.str.3) #8
  call void @abort() #9
  unreachable

28:                                               ; preds = %thread-pre-split
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %.pr)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #7
  store i32 %10, ptr %5, align 4, !tbaa !17
  %30 = getelementptr inbounds i8, ptr %5, i64 4
  store i16 1, ptr %30, align 4, !tbaa !19
  %31 = getelementptr inbounds i8, ptr %5, i64 6
  store i16 0, ptr %31, align 2, !tbaa !20
  %32 = call i32 @poll(ptr noundef nonnull %5, i64 noundef 1, i32 noundef 0) #7
  %.not17 = icmp eq i32 %32, 0
  br i1 %.not17, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %28, %39
  %33 = phi i32 [ %42, %39 ], [ %32, %28 ]
  %34 = icmp slt i32 %33, 0
  br i1 %34, label %35, label %36

35:                                               ; preds = %.lr.ph
  call void @perror(ptr noundef nonnull @.str.5) #8
  call void @abort() #9
  unreachable

36:                                               ; preds = %.lr.ph
  %37 = call i64 @recvfrom(i32 noundef %10, ptr noundef nonnull %4, i64 noundef 4, i32 noundef 0, ptr noundef null, ptr noundef null) #7
  %.not14 = icmp eq i64 %37, 4
  br i1 %.not14, label %39, label %38

38:                                               ; preds = %36
  call void @perror(ptr noundef nonnull @.str.6) #8
  call void @abort() #9
  unreachable

39:                                               ; preds = %36
  %40 = load i32, ptr %4, align 4, !tbaa !14
  %41 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7, i32 noundef %40)
  %42 = call i32 @poll(ptr noundef nonnull %5, i64 noundef 1, i32 noundef 0) #7
  %.not = icmp eq i32 %42, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !21

._crit_edge:                                      ; preds = %39, %28
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %3) #7
  ret i32 0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind
declare i32 @socket(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare void @perror(ptr nocapture noundef readonly) local_unnamed_addr #3

; Function Attrs: noreturn nounwind
declare void @abort() local_unnamed_addr #4

; Function Attrs: nounwind
declare i32 @inet_addr(ptr noundef) local_unnamed_addr #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i16 @__bswap_16(i16 noundef zeroext) local_unnamed_addr #5

; Function Attrs: nounwind
declare i32 @bind(i32 noundef, ptr noundef, i32 noundef) local_unnamed_addr #2

declare i64 @sendto(i32 noundef, ptr noundef, i64 noundef, i32 noundef, ptr noundef, i32 noundef) local_unnamed_addr #6

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

declare i32 @poll(ptr noundef, i64 noundef, i32 noundef) local_unnamed_addr #6

declare i64 @recvfrom(i32 noundef, ptr noundef, i64 noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #6

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind "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 = { nofree nounwind "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 #4 = { noreturn nounwind "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 #5 = { inlinehint 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 #6 = { "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 #7 = { nounwind }
attributes #8 = { cold }
attributes #9 = { noreturn 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 0}
!6 = !{!"sockaddr_in", !7, i64 0, !7, i64 2, !10, i64 4, !8, i64 8}
!7 = !{!"short", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"in_addr", !11, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!6, !11, i64 4}
!13 = !{!6, !7, i64 2}
!14 = !{!11, !11, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!18, !11, i64 0}
!18 = !{!"pollfd", !11, i64 0, !7, i64 4, !7, i64 6}
!19 = !{!18, !7, i64 4}
!20 = !{!18, !7, i64 6}
!21 = distinct !{!21, !16}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass