; LLVM IR from uNetworking/uSockets :: src (loop)

; 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.us_loop_t = type { %struct.us_internal_loop_data_t, i32, i32, i32, i32, [1024 x %struct.epoll_event], [8 x i8] }
%struct.us_internal_loop_data_t = type { ptr, ptr, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i64 }
%struct.epoll_event = type <{ i32, %union.epoll_data }>
%union.epoll_data = type { ptr }
%struct.us_socket_context_t = type { ptr, i32, i8, i8, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, [8 x i8] }
%struct.us_socket_t = type { %struct.us_poll_t, i8, i8, i16, ptr, ptr, ptr }
%struct.us_poll_t = type { %struct.anon, [12 x i8] }
%struct.anon = type { i32 }

; Function Attrs: nounwind uwtable
define dso_local void @us_internal_timer_sweep(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i8, align 1
  %6 = alloca i8, align 1
  %7 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.us_loop_t, ptr %8, i32 0, i32 0
  store ptr %9, ptr %3, align 8, !tbaa !5
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.us_internal_loop_data_t, ptr %10, i32 0, i32 3
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.us_internal_loop_data_t, ptr %13, i32 0, i32 4
  store ptr %12, ptr %14, align 8, !tbaa !13
  br label %15

15:                                               ; preds = %135, %1
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.us_internal_loop_data_t, ptr %16, i32 0, i32 4
  %18 = load ptr, ptr %17, align 8, !tbaa !13
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %143

20:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.us_internal_loop_data_t, ptr %21, i32 0, i32 4
  %23 = load ptr, ptr %22, align 8, !tbaa !13
  store ptr %23, ptr %4, align 8, !tbaa !5
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.us_socket_context_t, ptr %24, i32 0, i32 1
  %26 = load i32, ptr %25, align 8, !tbaa !14
  %27 = add i32 %26, 1
  store i32 %27, ptr %25, align 8, !tbaa !14
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #2
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.us_socket_context_t, ptr %28, i32 0, i32 1
  %30 = load i32, ptr %29, align 8, !tbaa !14
  %31 = urem i32 %30, 240
  %32 = trunc i32 %31 to i8
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.us_socket_context_t, ptr %33, i32 0, i32 2
  store i8 %32, ptr %34, align 4, !tbaa !16
  store i8 %32, ptr %5, align 1, !tbaa !17
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #2
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.us_socket_context_t, ptr %35, i32 0, i32 1
  %37 = load i32, ptr %36, align 8, !tbaa !14
  %38 = udiv i32 %37, 15
  %39 = urem i32 %38, 240
  %40 = trunc i32 %39 to i8
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.us_socket_context_t, ptr %41, i32 0, i32 3
  store i8 %40, ptr %42, align 1, !tbaa !18
  store i8 %40, ptr %6, align 1, !tbaa !17
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %43 = load ptr, ptr %4, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.us_socket_context_t, ptr %43, i32 0, i32 4
  %45 = load ptr, ptr %44, align 16, !tbaa !19
  store ptr %45, ptr %7, align 8, !tbaa !5
  br label %46

46:                                               ; preds = %130, %20
  %47 = load ptr, ptr %7, align 8, !tbaa !5
  %48 = icmp ne ptr %47, null
  br i1 %48, label %49, label %131

49:                                               ; preds = %46
  br label %50

50:                                               ; preds = %74, %49
  br label %51

51:                                               ; preds = %50
  %52 = load i8, ptr %5, align 1, !tbaa !17
  %53 = zext i8 %52 to i32
  %54 = load ptr, ptr %7, align 8, !tbaa !5
  %55 = getelementptr inbounds %struct.us_socket_t, ptr %54, i32 0, i32 1
  %56 = load i8, ptr %55, align 16, !tbaa !20
  %57 = zext i8 %56 to i32
  %58 = icmp eq i32 %53, %57
  br i1 %58, label %67, label %59

59:                                               ; preds = %51
  %60 = load i8, ptr %6, align 1, !tbaa !17
  %61 = zext i8 %60 to i32
  %62 = load ptr, ptr %7, align 8, !tbaa !5
  %63 = getelementptr inbounds %struct.us_socket_t, ptr %62, i32 0, i32 2
  %64 = load i8, ptr %63, align 1, !tbaa !25
  %65 = zext i8 %64 to i32
  %66 = icmp eq i32 %61, %65
  br i1 %66, label %67, label %68

67:                                               ; preds = %59, %51
  br label %75

68:                                               ; preds = %59
  %69 = load ptr, ptr %7, align 8, !tbaa !5
  %70 = getelementptr inbounds %struct.us_socket_t, ptr %69, i32 0, i32 6
  %71 = load ptr, ptr %70, align 8, !tbaa !26
  store ptr %71, ptr %7, align 8, !tbaa !5
  %72 = icmp eq ptr %71, null
  br i1 %72, label %73, label %74

73:                                               ; preds = %68
  br label %132

74:                                               ; preds = %68
  br label %50

75:                                               ; preds = %67
  %76 = load ptr, ptr %7, align 8, !tbaa !5
  %77 = load ptr, ptr %4, align 8, !tbaa !5
  %78 = getelementptr inbounds %struct.us_socket_context_t, ptr %77, i32 0, i32 6
  store ptr %76, ptr %78, align 16, !tbaa !27
  %79 = load i8, ptr %5, align 1, !tbaa !17
  %80 = zext i8 %79 to i32
  %81 = load ptr, ptr %7, align 8, !tbaa !5
  %82 = getelementptr inbounds %struct.us_socket_t, ptr %81, i32 0, i32 1
  %83 = load i8, ptr %82, align 16, !tbaa !20
  %84 = zext i8 %83 to i32
  %85 = icmp eq i32 %80, %84
  br i1 %85, label %86, label %94

86:                                               ; preds = %75
  %87 = load ptr, ptr %7, align 8, !tbaa !5
  %88 = getelementptr inbounds %struct.us_socket_t, ptr %87, i32 0, i32 1
  store i8 -1, ptr %88, align 16, !tbaa !20
  %89 = load ptr, ptr %4, align 8, !tbaa !5
  %90 = getelementptr inbounds %struct.us_socket_context_t, ptr %89, i32 0, i32 14
  %91 = load ptr, ptr %90, align 16, !tbaa !28
  %92 = load ptr, ptr %7, align 8, !tbaa !5
  %93 = call ptr %91(ptr noundef %92)
  br label %94

94:                                               ; preds = %86, %75
  %95 = load ptr, ptr %4, align 8, !tbaa !5
  %96 = getelementptr inbounds %struct.us_socket_context_t, ptr %95, i32 0, i32 6
  %97 = load ptr, ptr %96, align 16, !tbaa !27
  %98 = load ptr, ptr %7, align 8, !tbaa !5
  %99 = icmp eq ptr %97, %98
  br i1 %99, label %100, label %116

100:                                              ; preds = %94
  %101 = load i8, ptr %6, align 1, !tbaa !17
  %102 = zext i8 %101 to i32
  %103 = load ptr, ptr %7, align 8, !tbaa !5
  %104 = getelementptr inbounds %struct.us_socket_t, ptr %103, i32 0, i32 2
  %105 = load i8, ptr %104, align 1, !tbaa !25
  %106 = zext i8 %105 to i32
  %107 = icmp eq i32 %102, %106
  br i1 %107, label %108, label %116

108:                                              ; preds = %100
  %109 = load ptr, ptr %7, align 8, !tbaa !5
  %110 = getelementptr inbounds %struct.us_socket_t, ptr %109, i32 0, i32 2
  store i8 -1, ptr %110, align 1, !tbaa !25
  %111 = load ptr, ptr %4, align 8, !tbaa !5
  %112 = getelementptr inbounds %struct.us_socket_context_t, ptr %111, i32 0, i32 15
  %113 = load ptr, ptr %112, align 8, !tbaa !29
  %114 = load ptr, ptr %7, align 8, !tbaa !5
  %115 = call ptr %113(ptr noundef %114)
  br label %116

116:                                              ; preds = %108, %100, %94
  %117 = load ptr, ptr %7, align 8, !tbaa !5
  %118 = load ptr, ptr %4, align 8, !tbaa !5
  %119 = getelementptr inbounds %struct.us_socket_context_t, ptr %118, i32 0, i32 6
  %120 = load ptr, ptr %119, align 16, !tbaa !27
  %121 = icmp eq ptr %117, %120
  br i1 %121, label %122, label %126

122:                                              ; preds = %116
  %123 = load ptr, ptr %7, align 8, !tbaa !5
  %124 = getelementptr inbounds %struct.us_socket_t, ptr %123, i32 0, i32 6
  %125 = load ptr, ptr %124, align 8, !tbaa !26
  store ptr %125, ptr %7, align 8, !tbaa !5
  br label %130

126:                                              ; preds = %116
  %127 = load ptr, ptr %4, align 8, !tbaa !5
  %128 = getelementptr inbounds %struct.us_socket_context_t, ptr %127, i32 0, i32 6
  %129 = load ptr, ptr %128, align 16, !tbaa !27
  store ptr %129, ptr %7, align 8, !tbaa !5
  br label %130

130:                                              ; preds = %126, %122
  br label %46, !llvm.loop !30

131:                                              ; preds = %46
  br label %132

132:                                              ; preds = %131, %73
  %133 = load ptr, ptr %4, align 8, !tbaa !5
  %134 = getelementptr inbounds %struct.us_socket_context_t, ptr %133, i32 0, i32 6
  store ptr null, ptr %134, align 16, !tbaa !27
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  br label %135

135:                                              ; preds = %132
  %136 = load ptr, ptr %3, align 8, !tbaa !5
  %137 = getelementptr inbounds %struct.us_internal_loop_data_t, ptr %136, i32 0, i32 4
  %138 = load ptr, ptr %137, align 8, !tbaa !13
  %139 = getelementptr inbounds %struct.us_socket_context_t, ptr %138, i32 0, i32 8
  %140 = load ptr, ptr %139, align 16, !tbaa !32
  %141 = load ptr, ptr %3, align 8, !tbaa !5
  %142 = getelementptr inbounds %struct.us_internal_loop_data_t, ptr %141, i32 0, i32 4
  store ptr %140, ptr %142, align 8, !tbaa !13
  br label %15, !llvm.loop !33

143:                                              ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret void
}

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

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

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 }

!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, !6, i64 24}
!10 = !{!"us_internal_loop_data_t", !6, i64 0, !6, i64 8, !11, 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, !11, i64 88, !12, i64 96}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = !{!10, !6, i64 32}
!14 = !{!15, !11, i64 8}
!15 = !{!"us_socket_context_t", !6, i64 0, !11, i64 8, !7, i64 12, !7, i64 13, !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, !6, i64 96, !6, i64 104, !6, i64 112, !6, i64 120, !6, i64 128}
!16 = !{!15, !7, i64 12}
!17 = !{!7, !7, i64 0}
!18 = !{!15, !7, i64 13}
!19 = !{!15, !6, i64 16}
!20 = !{!21, !7, i64 16}
!21 = !{!"us_socket_t", !22, i64 0, !7, i64 16, !7, i64 17, !24, i64 18, !6, i64 24, !6, i64 32, !6, i64 40}
!22 = !{!"us_poll_t", !23, i64 0}
!23 = !{!"", !11, i64 0, !11, i64 3}
!24 = !{!"short", !7, i64 0}
!25 = !{!21, !7, i64 17}
!26 = !{!21, !6, i64 40}
!27 = !{!15, !6, i64 32}
!28 = !{!15, !6, i64 96}
!29 = !{!15, !6, i64 104}
!30 = distinct !{!30, !31}
!31 = !{!"llvm.loop.mustprogress"}
!32 = !{!15, !6, i64 48}
!33 = distinct !{!33, !31}


; 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
define dso_local void @us_internal_timer_sweep(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 24
  %3 = getelementptr inbounds i8, ptr %0, i64 32
  %storemerge50 = load ptr, ptr %2, align 8, !tbaa !5
  store ptr %storemerge50, ptr %3, align 8, !tbaa !9
  %.not51 = icmp eq ptr %storemerge50, null
  br i1 %.not51, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %.loopexit
  %storemerge52 = phi ptr [ %storemerge, %.loopexit ], [ %storemerge50, %1 ]
  %4 = getelementptr inbounds i8, ptr %storemerge52, i64 8
  %5 = load i32, ptr %4, align 8, !tbaa !13
  %6 = add i32 %5, 1
  store i32 %6, ptr %4, align 8, !tbaa !13
  %7 = urem i32 %6, 240
  %8 = trunc nuw i32 %7 to i8
  %9 = getelementptr inbounds i8, ptr %storemerge52, i64 12
  store i8 %8, ptr %9, align 4, !tbaa !15
  %10 = udiv i32 %6, 15
  %11 = urem i32 %10, 240
  %12 = trunc nuw i32 %11 to i8
  %13 = getelementptr inbounds i8, ptr %storemerge52, i64 13
  store i8 %12, ptr %13, align 1, !tbaa !16
  %14 = getelementptr inbounds i8, ptr %storemerge52, i64 16
  %15 = load ptr, ptr %14, align 16, !tbaa !17
  %.not4048 = icmp eq ptr %15, null
  br i1 %.not4048, label %.loopexit, label %.preheader.lr.ph

.preheader.lr.ph:                                 ; preds = %.lr.ph
  %16 = getelementptr inbounds i8, ptr %storemerge52, i64 32
  %17 = getelementptr inbounds i8, ptr %storemerge52, i64 96
  %18 = getelementptr inbounds i8, ptr %storemerge52, i64 104
  br label %.preheader

.preheader:                                       ; preds = %.preheader.backedge, %.preheader.lr.ph
  %.1 = phi ptr [ %15, %.preheader.lr.ph ], [ %.1.be, %.preheader.backedge ]
  %19 = getelementptr inbounds i8, ptr %.1, i64 16
  %20 = load i8, ptr %19, align 16, !tbaa !18
  %21 = zext i8 %20 to i32
  %22 = icmp eq i32 %7, %21
  br i1 %22, label %32, label %23

23:                                               ; preds = %.preheader
  %24 = getelementptr inbounds i8, ptr %.1, i64 17
  %25 = load i8, ptr %24, align 1, !tbaa !23
  %26 = zext i8 %25 to i32
  %27 = icmp eq i32 %11, %26
  br i1 %27, label %.thread, label %28

28:                                               ; preds = %23
  %29 = getelementptr inbounds i8, ptr %.1, i64 40
  %30 = load ptr, ptr %29, align 8, !tbaa !24
  %31 = icmp eq ptr %30, null
  br i1 %31, label %.loopexit, label %.preheader.backedge

.preheader.backedge:                              ; preds = %28, %52
  %.1.be = phi ptr [ %30, %28 ], [ %.2, %52 ]
  br label %.preheader, !llvm.loop !25

.thread:                                          ; preds = %23
  store ptr %.1, ptr %16, align 16, !tbaa !27
  br label %37

32:                                               ; preds = %.preheader
  %33 = getelementptr inbounds i8, ptr %.1, i64 16
  store ptr %.1, ptr %16, align 16, !tbaa !27
  store i8 -1, ptr %33, align 16, !tbaa !18
  %34 = load ptr, ptr %17, align 16, !tbaa !28
  %35 = tail call ptr %34(ptr noundef nonnull %.1) #1
  %.pre = load ptr, ptr %16, align 16, !tbaa !27
  %36 = icmp eq ptr %.pre, %.1
  br i1 %36, label %37, label %46

37:                                               ; preds = %.thread, %32
  %38 = phi ptr [ %.1, %.thread ], [ %.pre, %32 ]
  %39 = getelementptr inbounds i8, ptr %.1, i64 17
  %40 = load i8, ptr %39, align 1, !tbaa !23
  %41 = zext i8 %40 to i32
  %42 = icmp eq i32 %11, %41
  br i1 %42, label %43, label %46

43:                                               ; preds = %37
  store i8 -1, ptr %39, align 1, !tbaa !23
  %44 = load ptr, ptr %18, align 8, !tbaa !29
  %45 = tail call ptr %44(ptr noundef nonnull %.1) #1
  %.pre58 = load ptr, ptr %16, align 16, !tbaa !27
  br label %46

46:                                               ; preds = %43, %37, %32
  %47 = phi ptr [ %.pre58, %43 ], [ %38, %37 ], [ %.pre, %32 ]
  %48 = icmp eq ptr %.1, %47
  br i1 %48, label %49, label %52

49:                                               ; preds = %46
  %50 = getelementptr inbounds i8, ptr %.1, i64 40
  %51 = load ptr, ptr %50, align 8, !tbaa !24
  br label %52

52:                                               ; preds = %46, %49
  %.2 = phi ptr [ %51, %49 ], [ %47, %46 ]
  %.not40 = icmp eq ptr %.2, null
  br i1 %.not40, label %.loopexit, label %.preheader.backedge

.loopexit:                                        ; preds = %52, %28, %.lr.ph
  %53 = getelementptr inbounds i8, ptr %storemerge52, i64 32
  store ptr null, ptr %53, align 16, !tbaa !27
  %54 = load ptr, ptr %3, align 8, !tbaa !9
  %55 = getelementptr inbounds i8, ptr %54, i64 48
  %storemerge = load ptr, ptr %55, align 8, !tbaa !5
  store ptr %storemerge, ptr %3, align 8, !tbaa !9
  %.not = icmp eq ptr %storemerge, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !30

._crit_edge:                                      ; preds = %.loopexit, %1
  ret void
}

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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 32}
!10 = !{!"us_internal_loop_data_t", !6, i64 0, !6, i64 8, !11, 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, !11, i64 88, !12, i64 96}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = !{!14, !11, i64 8}
!14 = !{!"us_socket_context_t", !6, i64 0, !11, i64 8, !7, i64 12, !7, i64 13, !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, !6, i64 96, !6, i64 104, !6, i64 112, !6, i64 120, !6, i64 128}
!15 = !{!14, !7, i64 12}
!16 = !{!14, !7, i64 13}
!17 = !{!14, !6, i64 16}
!18 = !{!19, !7, i64 16}
!19 = !{!"us_socket_t", !20, i64 0, !7, i64 16, !7, i64 17, !22, i64 18, !6, i64 24, !6, i64 32, !6, i64 40}
!20 = !{!"us_poll_t", !21, i64 0}
!21 = !{!"", !11, i64 0, !11, i64 3}
!22 = !{!"short", !7, i64 0}
!23 = !{!19, !7, i64 17}
!24 = !{!19, !6, i64 40}
!25 = distinct !{!25, !26}
!26 = !{!"llvm.loop.mustprogress"}
!27 = !{!14, !6, i64 32}
!28 = !{!14, !6, i64 96}
!29 = !{!14, !6, i64 104}
!30 = distinct !{!30, !26}


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