; LLVM IR from kala13x/libxutils :: src/sys (thread)

; 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.XTask = type { ptr, ptr, %struct.XThread, i32, i32, i32 }
%struct.XThread = type { ptr, ptr, i64, i32, i8, i8 }

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

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

declare void @xusleep(i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @XTask_Wait(ptr noundef %0, i32 noundef %1, i32 noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %24, %22, %3
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.XTask, ptr %9, i32 0, i32 5
  %11 = atomicrmw add ptr %10, i32 0 seq_cst, align 8
  %12 = add i32 %11, 0
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = icmp ne i32 %12, %13
  br i1 %14, label %15, label %28

15:                                               ; preds = %8
  %16 = load i32, ptr %6, align 4, !tbaa !9
  %17 = icmp slt i32 %16, 0
  br i1 %17, label %18, label %19

18:                                               ; preds = %15
  br label %28

19:                                               ; preds = %15
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = icmp ne i32 %20, 0
  br i1 %21, label %23, label %22

22:                                               ; preds = %19
  br label %8, !llvm.loop !11

23:                                               ; preds = %19
  br label %24

24:                                               ; preds = %23
  %25 = load i32, ptr %6, align 4, !tbaa !9
  call void @xusleep(i32 noundef %25)
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = add i32 %26, 1
  store i32 %27, ptr %7, align 4, !tbaa !9
  br label %8, !llvm.loop !11

28:                                               ; preds = %18, %8
  %29 = load i32, ptr %7, align 4, !tbaa !9
  %30 = load i32, ptr %6, align 4, !tbaa !9
  %31 = mul i32 %29, %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret i32 %31
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 #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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

declare void @xusleep(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @XTask_Wait(ptr nocapture noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = getelementptr inbounds i8, ptr %0, i64 56
  %5 = icmp slt i32 %2, 0
  br i1 %5, label %.outer.split.us, label %.outer.split.lr.ph

.outer.split.lr.ph:                               ; preds = %3
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %.outer.split.split.us, label %.outer.split.lr.ph.split.split, !llvm.loop !5

.outer.split.lr.ph.split.split:                   ; preds = %.outer.split.lr.ph
  %6 = atomicrmw or ptr %4, i32 0 seq_cst, align 8
  %7 = icmp eq i32 %6, %1
  br i1 %7, label %.split, label %.outer

.outer.split.us:                                  ; preds = %3
  %8 = atomicrmw or ptr %4, i32 0 seq_cst, align 8
  br label %.split

.outer.split.split.us:                            ; preds = %.outer.split.lr.ph, %.outer.split.split.us
  %9 = atomicrmw or ptr %4, i32 0 seq_cst, align 8
  %10 = icmp eq i32 %9, %1
  br i1 %10, label %.split, label %.outer.split.split.us

.outer:                                           ; preds = %.outer.split.lr.ph.split.split, %.outer
  %.0.ph2031 = phi i32 [ %11, %.outer ], [ 0, %.outer.split.lr.ph.split.split ]
  tail call void @xusleep(i32 noundef %2) #2
  %11 = add i32 %.0.ph2031, 1
  %12 = atomicrmw or ptr %4, i32 0 seq_cst, align 8
  %13 = icmp eq i32 %12, %1
  br i1 %13, label %.split, label %.outer

.split:                                           ; preds = %.outer, %.outer.split.split.us, %.outer.split.lr.ph.split.split, %.outer.split.us
  %.us-phi = phi i32 [ 0, %.outer.split.us ], [ 0, %.outer.split.lr.ph.split.split ], [ 0, %.outer.split.split.us ], [ %11, %.outer ]
  %14 = mul i32 %.us-phi, %2
  ret i32 %14
}

attributes #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 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass