; LLVM IR from jingweizhanghuai/Morn :: test (test_process_topic)

; 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"

@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1

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

declare i32 @usleep(i32 noundef) #1

declare i32 @printf(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 void @subscriber() #2 {
  %1 = alloca ptr, align 8
  %2 = alloca i32, align 4
  br label %3

3:                                                ; preds = %21, %0
  %4 = call i32 @usleep(i32 noundef 100000)
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #3
  %5 = call ptr @m_ProcTopicRead(ptr noundef @.str.1, ptr noundef null, ptr noundef null)
  store ptr %5, ptr %1, align 8, !tbaa !5
  %6 = load ptr, ptr %1, align 8, !tbaa !5
  %7 = icmp ne ptr %6, null
  br i1 %7, label %8, label %18

8:                                                ; preds = %3
  %9 = load ptr, ptr %1, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %9, i64 0
  %11 = load i8, ptr %10, align 1, !tbaa !9
  %12 = sext i8 %11 to i32
  %13 = icmp eq i32 %12, 0
  br i1 %13, label %14, label %15

14:                                               ; preds = %8
  store i32 1, ptr %2, align 4
  br label %19

15:                                               ; preds = %8
  %16 = load ptr, ptr %1, align 8, !tbaa !5
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str, ptr noundef %16)
  br label %18

18:                                               ; preds = %15, %3
  store i32 0, ptr %2, align 4
  br label %19

19:                                               ; preds = %18, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #3
  %20 = load i32, ptr %2, align 4
  switch i32 %20, label %23 [
    i32 0, label %21
    i32 1, label %22
  ]

21:                                               ; preds = %19
  br label %3

22:                                               ; preds = %19
  ret void

23:                                               ; preds = %19
  unreachable
}

declare ptr @m_ProcTopicRead(ptr noundef, ptr noundef, ptr noundef) #1

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 = !{!7, !7, i64 0}


; 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"

@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1

declare i32 @usleep(i32 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @subscriber() local_unnamed_addr #2 {
  br label %1

1:                                                ; preds = %.backedge, %0
  %2 = tail call i32 @usleep(i32 noundef 100000) #3
  %3 = tail call ptr @m_ProcTopicRead(ptr noundef nonnull @.str.1, ptr noundef null, ptr noundef null) #3
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %.backedge, label %4

.backedge:                                        ; preds = %1, %7
  br label %1

4:                                                ; preds = %1
  %5 = load i8, ptr %3, align 1, !tbaa !5
  %6 = icmp eq i8 %5, 0
  br i1 %6, label %9, label %7

7:                                                ; preds = %4
  %8 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, ptr noundef nonnull %3)
  br label %.backedge

9:                                                ; preds = %4
  ret void
}

declare ptr @m_ProcTopicRead(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

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 = { nofree nounwind "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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass