; LLVM IR from 0intro/wmii :: lib/libstuff/event (buttonpress)

; 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.XButtonEvent = type { i32, i64, i32, ptr, i64, i64, i64, i64, i32, i32, i32, i32, i32, i32, i32 }
%struct.Handlers = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }

@display = external global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local void @event_buttonpress(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.XButtonEvent, ptr %4, i32 0, i32 4
  %6 = load i64, ptr %5, align 8, !tbaa !9
  %7 = call ptr @findwin(i64 noundef %6)
  store ptr %7, ptr %3, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %12

9:                                                ; preds = %1
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  call void @_event_handle(ptr noundef %10, i64 noundef ptrtoint (ptr getelementptr inbounds (%struct.Handlers, ptr null, i32 0, i32 1) to i64), ptr noundef %11)
  br label %18

12:                                               ; preds = %1
  %13 = load ptr, ptr @display, align 8, !tbaa !5
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.XButtonEvent, ptr %14, i32 0, i32 7
  %16 = load i64, ptr %15, align 8, !tbaa !13
  %17 = call i32 @XAllowEvents(ptr noundef %13, i32 noundef 2, i64 noundef %16)
  br label %18

18:                                               ; preds = %12, %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret void
}

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

declare ptr @findwin(i64 noundef) #2

declare void @_event_handle(ptr noundef, i64 noundef, ptr noundef) #2

declare i32 @XAllowEvents(ptr noundef, i32 noundef, i64 noundef) #2

; 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 = { "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 = { 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, !12, i64 32}
!10 = !{!"", !11, i64 0, !12, i64 8, !11, i64 16, !6, i64 24, !12, i64 32, !12, i64 40, !12, i64 48, !12, i64 56, !11, i64 64, !11, i64 68, !11, i64 72, !11, i64 76, !11, i64 80, !11, i64 84, !11, i64 88}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!10, !12, i64 56}


; 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"

@display = external local_unnamed_addr global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local void @event_buttonpress(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 32
  %3 = load i64, ptr %2, align 8, !tbaa !5
  %4 = tail call ptr @findwin(i64 noundef %3) #2
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %6, label %5

5:                                                ; preds = %1
  tail call void @_event_handle(ptr noundef nonnull %4, i64 noundef 8, ptr noundef nonnull %0) #2
  br label %11

6:                                                ; preds = %1
  %7 = load ptr, ptr @display, align 8, !tbaa !12
  %8 = getelementptr inbounds i8, ptr %0, i64 56
  %9 = load i64, ptr %8, align 8, !tbaa !13
  %10 = tail call i32 @XAllowEvents(ptr noundef %7, i32 noundef 2, i64 noundef %9) #2
  br label %11

11:                                               ; preds = %6, %5
  ret void
}

declare ptr @findwin(i64 noundef) local_unnamed_addr #1

declare void @_event_handle(ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #1

declare i32 @XAllowEvents(ptr noundef, i32 noundef, i64 noundef) local_unnamed_addr #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 = { "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, !10, i64 32}
!6 = !{!"", !7, i64 0, !10, i64 8, !7, i64 16, !11, i64 24, !10, i64 32, !10, i64 40, !10, i64 48, !10, i64 56, !7, i64 64, !7, i64 68, !7, i64 72, !7, i64 76, !7, i64 80, !7, i64 84, !7, i64 88}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!6, !10, i64 56}


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