; LLVM IR from 0intro/wmii :: lib/libstuff/x11/windows (sethandler)

; 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.Window = type { i32, i64, ptr, ptr, ptr, i64, ptr, %struct.Rectangle, i32, ptr, ptr, ptr, ptr, ptr, ptr, %struct.Ewmh, i64, ptr, ptr, i8, i32, i32 }
%struct.Rectangle = type { %struct.Point, %struct.Point }
%struct.Point = type { i32, i32 }
%struct.Ewmh = type { i64, i64, i64 }
%struct.HandlersLink = type { ptr, ptr, ptr }

@free_link = external hidden global ptr, align 8

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare hidden void @updatemap(ptr noundef) #1

; 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
define dso_local zeroext i1 @pophandler(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.Window, ptr %9, i32 0, i32 13
  store ptr %10, ptr %6, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %32, %2
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = load ptr, ptr %12, align 8, !tbaa !5
  store ptr %13, ptr %7, align 8, !tbaa !5
  %14 = icmp ne ptr %13, null
  br i1 %14, label %15, label %35

15:                                               ; preds = %11
  %16 = load ptr, ptr %7, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.HandlersLink, ptr %16, i32 0, i32 2
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = icmp eq ptr %18, %19
  br i1 %20, label %21, label %31

21:                                               ; preds = %15
  %22 = load ptr, ptr %7, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.HandlersLink, ptr %22, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !11
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %24, ptr %25, align 8, !tbaa !5
  %26 = load ptr, ptr @free_link, align 8, !tbaa !5
  %27 = load ptr, ptr %7, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.HandlersLink, ptr %27, i32 0, i32 0
  store ptr %26, ptr %28, align 8, !tbaa !11
  %29 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %29, ptr @free_link, align 8, !tbaa !5
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  call void @updatemap(ptr noundef %30)
  store i1 true, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %36

31:                                               ; preds = %15
  br label %32

32:                                               ; preds = %31
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.HandlersLink, ptr %33, i32 0, i32 0
  store ptr %34, ptr %6, align 8, !tbaa !5
  br label %11, !llvm.loop !12

35:                                               ; preds = %11
  store i1 false, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %36

36:                                               ; preds = %35, %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %37 = load i1, ptr %3, align 1
  ret i1 %37
}

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, !6, i64 16}
!10 = !{!"HandlersLink", !6, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!10, !6, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; 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"

@free_link = external hidden local_unnamed_addr global ptr, align 8

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

; Function Attrs: nounwind uwtable
define dso_local noundef zeroext i1 @pophandler(ptr noundef %0, ptr noundef readnone %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 112
  br label %4

4:                                                ; preds = %6, %2
  %.011 = phi ptr [ %3, %2 ], [ %5, %6 ]
  %5 = load ptr, ptr %.011, align 8, !tbaa !5
  %.not.not = icmp ne ptr %5, null
  br i1 %.not.not, label %6, label %.loopexit

6:                                                ; preds = %4
  %7 = getelementptr inbounds i8, ptr %5, i64 16
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = icmp eq ptr %8, %1
  br i1 %9, label %10, label %4, !llvm.loop !11

10:                                               ; preds = %6
  %11 = load ptr, ptr %5, align 8, !tbaa !13
  store ptr %11, ptr %.011, align 8, !tbaa !5
  %12 = load ptr, ptr @free_link, align 8, !tbaa !5
  store ptr %12, ptr %5, align 8, !tbaa !13
  store ptr %5, ptr @free_link, align 8, !tbaa !5
  tail call void @updatemap(ptr noundef %0)
  br label %.loopexit

.loopexit:                                        ; preds = %4, %10
  ret i1 %.not.not
}

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" }

!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 16}
!10 = !{!"HandlersLink", !6, i64 0, !6, i64 8, !6, i64 16}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!10, !6, i64 0}


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