; LLVM IR from jingweizhanghuai/Morn :: src/ptc (morn_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.HandleThread = type { ptr, i32 }
%struct.MList = type { i32, ptr }
%struct.ThreadInfo = type { i32, i64, ptr, ptr, ptr, ptr }

@morn_thread_handle = external dso_local global ptr, align 8
@morn_thread_ok = external dso_local global i32, align 4

; 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

; Function Attrs: nounwind uwtable
define dso_local void @mThreadJoin() #1 {
  %1 = alloca ptr, align 8
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = load i32, ptr @morn_thread_ok, align 4, !tbaa !5
  %5 = icmp ne i32 %4, 0
  br i1 %5, label %6, label %7

6:                                                ; preds = %0
  br label %39

7:                                                ; preds = %0
  store i32 1, ptr @morn_thread_ok, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #3
  %8 = load ptr, ptr @morn_thread_handle, align 8, !tbaa !9
  store ptr %8, ptr %1, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %32, %7
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = load ptr, ptr %1, align 8, !tbaa !9
  %12 = getelementptr inbounds %struct.HandleThread, ptr %11, i32 0, i32 0
  %13 = load ptr, ptr %12, align 8, !tbaa !11
  %14 = getelementptr inbounds %struct.MList, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %14, align 8, !tbaa !13
  %16 = icmp slt i32 %10, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  br label %35

18:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %19 = load ptr, ptr %1, align 8, !tbaa !9
  %20 = getelementptr inbounds %struct.HandleThread, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !11
  %22 = getelementptr inbounds %struct.MList, ptr %21, i32 0, i32 1
  %23 = load ptr, ptr %22, align 8, !tbaa !15
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds ptr, ptr %23, i64 %25
  %27 = load ptr, ptr %26, align 8, !tbaa !9
  store ptr %27, ptr %3, align 8, !tbaa !9
  %28 = load ptr, ptr %3, align 8, !tbaa !9
  %29 = getelementptr inbounds %struct.ThreadInfo, ptr %28, i32 0, i32 1
  %30 = load i64, ptr %29, align 8, !tbaa !16
  %31 = call i32 @pthread_join(i64 noundef %30, ptr noundef null)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %32

32:                                               ; preds = %18
  %33 = load i32, ptr %2, align 4, !tbaa !5
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %2, align 4, !tbaa !5
  br label %9, !llvm.loop !19

35:                                               ; preds = %17
  %36 = load ptr, ptr %1, align 8, !tbaa !9
  %37 = getelementptr inbounds %struct.HandleThread, ptr %36, i32 0, i32 0
  %38 = load ptr, ptr %37, align 8, !tbaa !11
  call void @mListClear(ptr noundef %38)
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #3
  br label %39

39:                                               ; preds = %35, %6
  ret void
}

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

declare void @mListClear(ptr noundef) #2

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 = { "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 = !{!"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 0}
!12 = !{!"HandleThread", !10, i64 0, !6, i64 8}
!13 = !{!14, !6, i64 0}
!14 = !{!"MList", !6, i64 0, !10, i64 8}
!15 = !{!14, !10, i64 8}
!16 = !{!17, !18, i64 8}
!17 = !{!"ThreadInfo", !6, i64 0, !18, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40}
!18 = !{!"long", !7, i64 0}
!19 = distinct !{!19, !20}
!20 = !{!"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"

@morn_thread_handle = external dso_local local_unnamed_addr global ptr, align 8
@morn_thread_ok = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local void @mThreadJoin() local_unnamed_addr #0 {
  %1 = load i32, ptr @morn_thread_ok, align 4, !tbaa !5
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %2, label %19

2:                                                ; preds = %0
  store i32 1, ptr @morn_thread_ok, align 4, !tbaa !5
  %3 = load ptr, ptr @morn_thread_handle, align 8, !tbaa !9
  %4 = load ptr, ptr %3, align 8, !tbaa !11
  %5 = load i32, ptr %4, align 8, !tbaa !13
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.lcssa = phi ptr [ %4, %2 ], [ %15, %.lr.ph ]
  tail call void @mListClear(ptr noundef nonnull %.lcssa) #2
  br label %19

.lr.ph:                                           ; preds = %2, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %2 ]
  %7 = phi ptr [ %15, %.lr.ph ], [ %4, %2 ]
  %8 = getelementptr inbounds i8, ptr %7, i64 8
  %9 = load ptr, ptr %8, align 8, !tbaa !15
  %10 = getelementptr inbounds ptr, ptr %9, i64 %indvars.iv
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = getelementptr inbounds i8, ptr %11, i64 8
  %13 = load i64, ptr %12, align 8, !tbaa !16
  %14 = tail call i32 @pthread_join(i64 noundef %13, ptr noundef null) #2
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = load ptr, ptr %3, align 8, !tbaa !11
  %16 = load i32, ptr %15, align 8, !tbaa !13
  %17 = sext i32 %16 to i64
  %18 = icmp slt i64 %indvars.iv.next, %17
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !19

19:                                               ; preds = %0, %._crit_edge
  ret void
}

declare i32 @pthread_join(i64 noundef, ptr noundef) local_unnamed_addr #1

declare void @mListClear(ptr 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, !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 0}
!12 = !{!"HandleThread", !10, i64 0, !6, i64 8}
!13 = !{!14, !6, i64 0}
!14 = !{!"MList", !6, i64 0, !10, i64 8}
!15 = !{!14, !10, i64 8}
!16 = !{!17, !18, i64 8}
!17 = !{!"ThreadInfo", !6, i64 0, !18, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40}
!18 = !{!"long", !7, i64 0}
!19 = distinct !{!19, !20}
!20 = !{!"llvm.loop.mustprogress"}


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