; LLVM IR from narke/Aragveli :: src/kernel/process (sched_rr)

; 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.anon = type { ptr, ptr }
%struct.thread = type { i32, i64, [32 x i8], i32, ptr, i8, %struct.anon.0 }
%struct.anon.0 = type { ptr, ptr }

@ready_threads = external dso_local global %struct.anon, align 8

; Function Attrs: nounwind uwtable
define dso_local void @scheduler_remove_thread(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  br label %3

3:                                                ; preds = %1
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.thread, ptr %4, i32 0, i32 6
  %6 = getelementptr inbounds %struct.anon.0, ptr %5, i32 0, i32 0
  %7 = load ptr, ptr %6, align 8, !tbaa !9
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %20

9:                                                ; preds = %3
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.thread, ptr %10, i32 0, i32 6
  %12 = getelementptr inbounds %struct.anon.0, ptr %11, i32 0, i32 1
  %13 = load ptr, ptr %12, align 8, !tbaa !14
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.thread, ptr %14, i32 0, i32 6
  %16 = getelementptr inbounds %struct.anon.0, ptr %15, i32 0, i32 0
  %17 = load ptr, ptr %16, align 8, !tbaa !9
  %18 = getelementptr inbounds %struct.thread, ptr %17, i32 0, i32 6
  %19 = getelementptr inbounds %struct.anon.0, ptr %18, i32 0, i32 1
  store ptr %13, ptr %19, align 8, !tbaa !14
  br label %25

20:                                               ; preds = %3
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.thread, ptr %21, i32 0, i32 6
  %23 = getelementptr inbounds %struct.anon.0, ptr %22, i32 0, i32 1
  %24 = load ptr, ptr %23, align 8, !tbaa !14
  store ptr %24, ptr getelementptr inbounds (%struct.anon, ptr @ready_threads, i32 0, i32 1), align 8, !tbaa !15
  br label %25

25:                                               ; preds = %20, %9
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.thread, ptr %26, i32 0, i32 6
  %28 = getelementptr inbounds %struct.anon.0, ptr %27, i32 0, i32 0
  %29 = load ptr, ptr %28, align 8, !tbaa !9
  %30 = load ptr, ptr %2, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.thread, ptr %30, i32 0, i32 6
  %32 = getelementptr inbounds %struct.anon.0, ptr %31, i32 0, i32 1
  %33 = load ptr, ptr %32, align 8, !tbaa !14
  store ptr %29, ptr %33, align 8, !tbaa !5
  br label %34

34:                                               ; preds = %25
  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" }

!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 72}
!10 = !{!"thread", !11, i64 0, !12, i64 8, !7, i64 16, !11, i64 48, !6, i64 56, !7, i64 64, !13, i64 72}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!"", !6, i64 0, !6, i64 8}
!14 = !{!10, !6, i64 80}
!15 = !{!13, !6, i64 8}


; 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.anon = type { ptr, ptr }

@ready_threads = external dso_local local_unnamed_addr global %struct.anon, align 8

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @scheduler_remove_thread(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 72
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %.not = icmp eq ptr %3, null
  %4 = getelementptr inbounds i8, ptr %0, i64 80
  %5 = load ptr, ptr %4, align 8, !tbaa !13
  %6 = getelementptr inbounds i8, ptr %3, i64 80
  %.sink = select i1 %.not, ptr getelementptr inbounds (i8, ptr @ready_threads, i64 8), ptr %6
  store ptr %5, ptr %.sink, align 8, !tbaa !14
  store ptr %3, ptr %5, align 8, !tbaa !15
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: readwrite, inaccessiblemem: none) 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, !11, i64 72}
!6 = !{!"thread", !7, i64 0, !10, i64 8, !8, i64 16, !7, i64 48, !11, i64 56, !8, i64 64, !12, i64 72}
!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, i64 0, !11, i64 8}
!13 = !{!6, !11, i64 80}
!14 = !{!12, !11, i64 8}
!15 = !{!11, !11, i64 0}


; Effective O3 passes: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass