; LLVM IR from stan-dev/math :: lib/tbb_2020.3/src/old/test_concurrent_queue_v2.ll (Z8TestMainv)

; 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"

@_ZL9MinThread = external hidden global i32, align 4
@_ZL9MaxThread = external hidden 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: mustprogress uwtable
define dso_local noundef i32 @_Z8TestMainv() #1 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  call void @_Z14TestEmptyQueueIcEvv()
  call void @_Z14TestEmptyQueueI3FooEvv()
  call void @_Z13TestFullQueuev()
  call void @_Z23TestConcurrentQueueTypev()
  call void @_Z12TestIteratorv()
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #2
  %4 = load i32, ptr @_ZL9MinThread, align 4, !tbaa !5
  store i32 %4, ptr %1, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %34, %0
  %6 = load i32, ptr %1, align 4, !tbaa !5
  %7 = load i32, ptr @_ZL9MaxThread, align 4, !tbaa !5
  %8 = icmp sle i32 %6, %7
  br i1 %8, label %10, label %9

9:                                                ; preds = %5
  store i32 2, ptr %2, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #2
  br label %37

10:                                               ; preds = %5
  %11 = load i32, ptr %1, align 4, !tbaa !5
  call void @_Z17TestNegativeQueueI3FooEvi(i32 noundef %11)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %27, %10
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = icmp slt i32 %13, 64
  br i1 %14, label %16, label %15

15:                                               ; preds = %12
  store i32 5, ptr %2, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  br label %33

16:                                               ; preds = %12
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = load i32, ptr %1, align 4, !tbaa !5
  call void @_Z11TestPushPopili(i32 noundef %17, i64 noundef -1, i32 noundef %18)
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = load i32, ptr %1, align 4, !tbaa !5
  call void @_Z11TestPushPopili(i32 noundef %19, i64 noundef 1, i32 noundef %20)
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = load i32, ptr %1, align 4, !tbaa !5
  call void @_Z11TestPushPopili(i32 noundef %21, i64 noundef 2, i32 noundef %22)
  %23 = load i32, ptr %3, align 4, !tbaa !5
  %24 = load i32, ptr %1, align 4, !tbaa !5
  call void @_Z11TestPushPopili(i32 noundef %23, i64 noundef 10, i32 noundef %24)
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = load i32, ptr %1, align 4, !tbaa !5
  call void @_Z11TestPushPopili(i32 noundef %25, i64 noundef 100, i32 noundef %26)
  br label %27

27:                                               ; preds = %16
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = sdiv i32 %28, 3
  %30 = add nsw i32 1, %29
  %31 = load i32, ptr %3, align 4, !tbaa !5
  %32 = add nsw i32 %31, %30
  store i32 %32, ptr %3, align 4, !tbaa !5
  br label %12, !llvm.loop !9

33:                                               ; preds = %15
  br label %34

34:                                               ; preds = %33
  %35 = load i32, ptr %1, align 4, !tbaa !5
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %1, align 4, !tbaa !5
  br label %5, !llvm.loop !11

37:                                               ; preds = %9
  ret i32 0
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z11TestPushPopili(i32 noundef, i64 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z12TestIteratorv() #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z23TestConcurrentQueueTypev() #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z13TestFullQueuev() #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z14TestEmptyQueueIcEvv() #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z14TestEmptyQueueI3FooEvv() #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z17TestNegativeQueueI3FooEvi(i32 noundef) #1

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 = { 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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

@_ZL9MinThread = external hidden local_unnamed_addr global i32, align 4
@_ZL9MaxThread = external hidden local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z8TestMainv() local_unnamed_addr #0 {
  tail call void @_Z14TestEmptyQueueIcEvv()
  tail call void @_Z14TestEmptyQueueI3FooEvv()
  tail call void @_Z13TestFullQueuev()
  tail call void @_Z23TestConcurrentQueueTypev()
  tail call void @_Z12TestIteratorv()
  %1 = load i32, ptr @_ZL9MinThread, align 4, !tbaa !5
  %2 = load i32, ptr @_ZL9MaxThread, align 4, !tbaa !5
  %.not18 = icmp sgt i32 %1, %2
  br i1 %.not18, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %3, %0
  ret i32 0

.lr.ph:                                           ; preds = %0, %3
  %.01619 = phi i32 [ %4, %3 ], [ %1, %0 ]
  tail call void @_Z17TestNegativeQueueI3FooEvi(i32 noundef %.01619)
  br label %6

3:                                                ; preds = %6
  %4 = add nsw i32 %.01619, 1
  %5 = load i32, ptr @_ZL9MaxThread, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.01619, %5
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

6:                                                ; preds = %.lr.ph, %6
  %.017 = phi i32 [ 0, %.lr.ph ], [ %9, %6 ]
  tail call void @_Z11TestPushPopili(i32 noundef %.017, i64 noundef -1, i32 noundef %.01619)
  tail call void @_Z11TestPushPopili(i32 noundef %.017, i64 noundef 1, i32 noundef %.01619)
  tail call void @_Z11TestPushPopili(i32 noundef %.017, i64 noundef 2, i32 noundef %.01619)
  tail call void @_Z11TestPushPopili(i32 noundef %.017, i64 noundef 10, i32 noundef %.01619)
  tail call void @_Z11TestPushPopili(i32 noundef %.017, i64 noundef 100, i32 noundef %.01619)
  %7 = sdiv i32 %.017, 3
  %8 = add nsw i32 %.017, 1
  %9 = add i32 %8, %7
  %10 = icmp slt i32 %9, 64
  br i1 %10, label %6, label %3, !llvm.loop !11
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z11TestPushPopili(i32 noundef, i64 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z12TestIteratorv() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z23TestConcurrentQueueTypev() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z13TestFullQueuev() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z14TestEmptyQueueIcEvv() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z14TestEmptyQueueI3FooEvv() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z17TestNegativeQueueI3FooEvi(i32 noundef) local_unnamed_addr #0

attributes #0 = { 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" }

!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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass