; LLVM IR from stan-dev/math :: lib/tbb_2020.3/src/test/test_task_enqueue.ll (Z10TimedYieldd)

; 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"

%"class.tbb::tick_count" = type { i64 }
%"class.tbb::tick_count::interval_t" = type { i64 }

; 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: mustprogress uwtable
define dso_local void @_Z10TimedYieldd(double noundef %0) #1 {
  %2 = alloca double, align 8
  %3 = alloca %"class.tbb::tick_count", align 8
  %4 = alloca %"class.tbb::tick_count::interval_t", align 8
  %5 = alloca %"class.tbb::tick_count", align 8
  %6 = alloca %"class.tbb::tick_count::interval_t", align 8
  store double %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %7 = call i64 @_ZN3tbb10tick_count3nowEv()
  %8 = getelementptr inbounds %"class.tbb::tick_count", ptr %3, i32 0, i32 0
  store i64 %7, ptr %8, align 8
  br label %9

9:                                                ; preds = %17, %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %10 = call i64 @_ZN3tbb10tick_count3nowEv()
  %11 = getelementptr inbounds %"class.tbb::tick_count", ptr %5, i32 0, i32 0
  store i64 %10, ptr %11, align 8
  %12 = call i64 @_ZN3tbbmiERKNS_10tick_countES2_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %3)
  %13 = getelementptr inbounds %"class.tbb::tick_count::interval_t", ptr %4, i32 0, i32 0
  store i64 %12, ptr %13, align 8
  %14 = call noundef double @_ZNK3tbb10tick_count10interval_t7secondsEv(ptr noundef nonnull align 8 dereferenceable(8) %4)
  %15 = load double, ptr %2, align 8, !tbaa !5
  %16 = fcmp olt double %14, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  br i1 %16, label %17, label %19

17:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %18 = load double, ptr %2, align 8, !tbaa !5
  call void @_ZN3tbb10tick_count10interval_tC2Ed(ptr noundef nonnull align 8 dereferenceable(8) %6, double noundef %18)
  call void @_ZN3tbb15this_tbb_thread5sleepERKNS_10tick_count10interval_tE(ptr noundef nonnull align 8 dereferenceable(8) %6)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %9, !llvm.loop !9

19:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local i64 @_ZN3tbb10tick_count3nowEv() #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local i64 @_ZN3tbbmiERKNS_10tick_countES2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef double @_ZNK3tbb10tick_count10interval_t7secondsEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN3tbb15this_tbb_thread5sleepERKNS_10tick_count10interval_tE(ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3tbb10tick_count10interval_tC2Ed(ptr noundef nonnull align 8 dereferenceable(8), double noundef) unnamed_addr #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 = { inlinehint mustprogress 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 = { inlinehint mustprogress 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 #4 = { 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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"

%"class.tbb::tick_count" = type { i64 }
%"class.tbb::tick_count::interval_t" = type { i64 }

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

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

; Function Attrs: mustprogress uwtable
define dso_local void @_Z10TimedYieldd(double noundef %0) local_unnamed_addr #1 {
  %2 = alloca %"class.tbb::tick_count", align 8
  %3 = alloca %"class.tbb::tick_count::interval_t", align 8
  %4 = alloca %"class.tbb::tick_count", align 8
  %5 = alloca %"class.tbb::tick_count::interval_t", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %6 = tail call i64 @_ZN3tbb10tick_count3nowEv()
  store i64 %6, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %7 = tail call i64 @_ZN3tbb10tick_count3nowEv()
  store i64 %7, ptr %4, align 8
  %8 = call i64 @_ZN3tbbmiERKNS_10tick_countES2_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %2)
  store i64 %8, ptr %3, align 8
  %9 = call noundef double @_ZNK3tbb10tick_count10interval_t7secondsEv(ptr noundef nonnull align 8 dereferenceable(8) %3)
  %10 = fcmp olt double %9, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  br i1 %10, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  call void @_ZN3tbb10tick_count10interval_tC2Ed(ptr noundef nonnull align 8 dereferenceable(8) %5, double noundef %0)
  call void @_ZN3tbb15this_tbb_thread5sleepERKNS_10tick_count10interval_tE(ptr noundef nonnull align 8 dereferenceable(8) %5)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %11 = call i64 @_ZN3tbb10tick_count3nowEv()
  store i64 %11, ptr %4, align 8
  %12 = call i64 @_ZN3tbbmiERKNS_10tick_countES2_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %2)
  store i64 %12, ptr %3, align 8
  %13 = call noundef double @_ZNK3tbb10tick_count10interval_t7secondsEv(ptr noundef nonnull align 8 dereferenceable(8) %3)
  %14 = fcmp olt double %13, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  br i1 %14, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  ret void
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local i64 @_ZN3tbb10tick_count3nowEv() local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local i64 @_ZN3tbbmiERKNS_10tick_countES2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef double @_ZNK3tbb10tick_count10interval_t7secondsEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN3tbb15this_tbb_thread5sleepERKNS_10tick_count10interval_tE(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3tbb10tick_count10interval_tC2Ed(ptr noundef nonnull align 8 dereferenceable(8), double noundef) unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 = { inlinehint mustprogress 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 = { inlinehint mustprogress 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 #4 = { 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,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass