; LLVM IR from aap/pdp6 :: emu (tty)

; 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.Task = type { ptr, ptr, ptr, i32, i32 }
%struct.Tty = type { %struct.Device, ptr, i8, i8, i8, i8, i8, i8, i32, i32 }
%struct.Device = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }

@tty_ident = external dso_local global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local ptr @maketty(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %struct.Task, align 8
  %7 = alloca %struct.Task, align 8
  store i32 %0, ptr %3, align 4, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr %6) #6
  %8 = call noalias ptr @malloc(i64 noundef 88) #7
  store ptr %8, ptr %5, align 8, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !9
  call void @llvm.memset.p0.i64(ptr align 8 %9, i8 0, i64 88, i1 false)
  %10 = load ptr, ptr @tty_ident, align 8, !tbaa !9
  %11 = load ptr, ptr %5, align 8, !tbaa !9
  %12 = getelementptr inbounds %struct.Tty, ptr %11, i32 0, i32 0
  %13 = getelementptr inbounds %struct.Device, ptr %12, i32 0, i32 1
  store ptr %10, ptr %13, align 8, !tbaa !11
  %14 = load ptr, ptr %5, align 8, !tbaa !9
  %15 = getelementptr inbounds %struct.Tty, ptr %14, i32 0, i32 0
  %16 = getelementptr inbounds %struct.Device, ptr %15, i32 0, i32 2
  store ptr @.str.1, ptr %16, align 8, !tbaa !14
  %17 = load ptr, ptr %5, align 8, !tbaa !9
  %18 = getelementptr inbounds %struct.Tty, ptr %17, i32 0, i32 0
  %19 = getelementptr inbounds %struct.Device, ptr %18, i32 0, i32 3
  store ptr @ttyattach, ptr %19, align 8, !tbaa !15
  %20 = load ptr, ptr %5, align 8, !tbaa !9
  %21 = getelementptr inbounds %struct.Tty, ptr %20, i32 0, i32 0
  %22 = getelementptr inbounds %struct.Device, ptr %21, i32 0, i32 5
  store ptr @ttyioconnect, ptr %22, align 8, !tbaa !16
  %23 = load ptr, ptr %5, align 8, !tbaa !9
  %24 = getelementptr inbounds %struct.Tty, ptr %23, i32 0, i32 9
  store i32 -1, ptr %24, align 4, !tbaa !17
  %25 = getelementptr inbounds %struct.Task, ptr %7, i32 0, i32 0
  store ptr null, ptr %25, align 8, !tbaa !18
  %26 = getelementptr inbounds %struct.Task, ptr %7, i32 0, i32 1
  store ptr @ttycycle, ptr %26, align 8, !tbaa !20
  %27 = getelementptr inbounds %struct.Task, ptr %7, i32 0, i32 2
  %28 = load ptr, ptr %5, align 8, !tbaa !9
  store ptr %28, ptr %27, align 8, !tbaa !21
  %29 = getelementptr inbounds %struct.Task, ptr %7, i32 0, i32 3
  store i32 300000, ptr %29, align 8, !tbaa !22
  %30 = getelementptr inbounds %struct.Task, ptr %7, i32 0, i32 4
  store i32 0, ptr %30, align 4, !tbaa !23
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %6, ptr align 8 %7, i64 32, i1 false), !tbaa.struct !24
  call void @addtask(ptr noundef byval(%struct.Task) align 8 %6)
  %31 = load ptr, ptr %5, align 8, !tbaa !9
  %32 = getelementptr inbounds %struct.Tty, ptr %31, i32 0, i32 0
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  ret ptr %32
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

; Function Attrs: nounwind uwtable
declare hidden void @ttyattach(ptr noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
declare hidden void @ttyioconnect(ptr noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
declare hidden void @ttycycle(ptr noundef) #0

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #4

declare void @addtask(ptr noundef byval(%struct.Task) align 8) #5

; 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 allocsize(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 #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { "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 = { nounwind }
attributes #7 = { nounwind allocsize(0) }

!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, !10, i64 8}
!12 = !{!"Tty", !13, i64 0, !10, i64 64, !7, i64 72, !7, i64 73, !7, i64 74, !7, i64 75, !7, i64 76, !7, i64 77, !6, i64 80, !6, i64 84}
!13 = !{!"Device", !10, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48, !10, i64 56}
!14 = !{!12, !10, i64 16}
!15 = !{!12, !10, i64 24}
!16 = !{!12, !10, i64 40}
!17 = !{!12, !6, i64 84}
!18 = !{!19, !10, i64 0}
!19 = !{!"Task", !10, i64 0, !10, i64 8, !10, i64 16, !6, i64 24, !6, i64 28}
!20 = !{!19, !10, i64 8}
!21 = !{!19, !10, i64 16}
!22 = !{!19, !6, i64 24}
!23 = !{!19, !6, i64 28}
!24 = !{i64 0, i64 8, !9, i64 8, i64 8, !9, i64 16, i64 8, !9, i64 24, i64 4, !5, i64 28, i64 4, !5}


; 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.Task = type { ptr, ptr, ptr, i32, i32 }

@tty_ident = external dso_local local_unnamed_addr global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @maketty(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %3 = alloca %struct.Task, align 8
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #4
  %calloc = tail call dereferenceable_or_null(88) ptr @calloc(i64 1, i64 88)
  %4 = load ptr, ptr @tty_ident, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %calloc, i64 8
  store ptr %4, ptr %5, align 8, !tbaa !9
  %6 = getelementptr inbounds i8, ptr %calloc, i64 16
  store ptr @.str.1, ptr %6, align 8, !tbaa !13
  %7 = getelementptr inbounds i8, ptr %calloc, i64 24
  store ptr @ttyattach, ptr %7, align 8, !tbaa !14
  %8 = getelementptr inbounds i8, ptr %calloc, i64 40
  store ptr @ttyioconnect, ptr %8, align 8, !tbaa !15
  %9 = getelementptr inbounds i8, ptr %calloc, i64 84
  store i32 -1, ptr %9, align 4, !tbaa !16
  store ptr null, ptr %3, align 8, !tbaa !5
  %.sroa.2.0..sroa_idx = getelementptr inbounds i8, ptr %3, i64 8
  store ptr @ttycycle, ptr %.sroa.2.0..sroa_idx, align 8, !tbaa !5
  %.sroa.3.0..sroa_idx = getelementptr inbounds i8, ptr %3, i64 16
  store ptr %calloc, ptr %.sroa.3.0..sroa_idx, align 8, !tbaa !5
  %.sroa.4.0..sroa_idx = getelementptr inbounds i8, ptr %3, i64 24
  store i32 300000, ptr %.sroa.4.0..sroa_idx, align 8, !tbaa !17
  %.sroa.5.0..sroa_idx = getelementptr inbounds i8, ptr %3, i64 28
  store i32 0, ptr %.sroa.5.0..sroa_idx, align 4, !tbaa !17
  tail call void @addtask(ptr noundef nonnull byval(%struct.Task) align 8 %3) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #4
  ret ptr %calloc
}

; 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 uwtable
declare hidden void @ttyattach(ptr noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
declare hidden void @ttyioconnect(ptr noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
declare hidden void @ttycycle(ptr noundef) #0

declare void @addtask(ptr noundef byval(%struct.Task) align 8) local_unnamed_addr #2

; 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 willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" }
attributes #4 = { 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 8}
!10 = !{!"Tty", !11, i64 0, !6, i64 64, !7, i64 72, !7, i64 73, !7, i64 74, !7, i64 75, !7, i64 76, !7, i64 77, !12, i64 80, !12, i64 84}
!11 = !{!"Device", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56}
!12 = !{!"int", !7, i64 0}
!13 = !{!10, !6, i64 16}
!14 = !{!10, !6, i64 24}
!15 = !{!10, !6, i64 40}
!16 = !{!10, !12, i64 84}
!17 = !{!12, !12, i64 0}


; Effective O3 passes: DSEPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass