; LLVM IR from indygreg/python-zstandard :: zstd (zstd)

; 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.POOL_ctx_s = type { %struct.ZSTD_customMem, ptr, i64, i64, ptr, i64, i64, i64, i64, i32, %union.pthread_mutex_t, %union.pthread_cond_t, %union.pthread_cond_t, i32 }
%struct.ZSTD_customMem = type { ptr, ptr, ptr }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%union.pthread_cond_t = type { %struct.__pthread_cond_s }
%struct.__pthread_cond_s = type { %union.__atomic_wide_counter, %union.__atomic_wide_counter, [2 x i32], [2 x i32], i32, i32, [2 x i32] }
%union.__atomic_wide_counter = type { i64 }

; Function Attrs: nounwind
declare i32 @pthread_mutex_lock(ptr noundef) #0

declare i32 @pthread_cond_wait(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind
declare i32 @pthread_mutex_unlock(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @POOL_add(ptr noundef %0, ptr noundef %1, ptr noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.POOL_ctx_s, ptr %7, i32 0, i32 10
  %9 = call i32 @pthread_mutex_lock(ptr noundef %8) #3
  br label %10

10:                                               ; preds = %22, %3
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = call i32 @isQueueFull(ptr noundef %11)
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %14, label %20

14:                                               ; preds = %10
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.POOL_ctx_s, ptr %15, i32 0, i32 13
  %17 = load i32, ptr %16, align 8, !tbaa !9
  %18 = icmp ne i32 %17, 0
  %19 = xor i1 %18, true
  br label %20

20:                                               ; preds = %14, %10
  %21 = phi i1 [ false, %10 ], [ %19, %14 ]
  br i1 %21, label %22, label %28

22:                                               ; preds = %20
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.POOL_ctx_s, ptr %23, i32 0, i32 11
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.POOL_ctx_s, ptr %25, i32 0, i32 10
  %27 = call i32 @pthread_cond_wait(ptr noundef %24, ptr noundef %26)
  br label %10, !llvm.loop !14

28:                                               ; preds = %20
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  call void @POOL_add_internal(ptr noundef %29, ptr noundef %30, ptr noundef %31)
  %32 = load ptr, ptr %4, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.POOL_ctx_s, ptr %32, i32 0, i32 10
  %34 = call i32 @pthread_mutex_unlock(ptr noundef %33) #3
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden i32 @isQueueFull(ptr noundef) #2

; Function Attrs: nounwind uwtable
declare hidden void @POOL_add_internal(ptr noundef, ptr noundef, ptr noundef) #2

attributes #0 = { 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 #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, !13, i64 232}
!10 = !{!"POOL_ctx_s", !11, i64 0, !6, i64 24, !12, i64 32, !12, i64 40, !6, i64 48, !12, i64 56, !12, i64 64, !12, i64 72, !12, i64 80, !13, i64 88, !7, i64 96, !7, i64 136, !7, i64 184, !13, i64 232}
!11 = !{!"", !6, i64 0, !6, i64 8, !6, i64 16}
!12 = !{!"long", !7, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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"

; Function Attrs: nounwind
declare i32 @pthread_mutex_lock(ptr noundef) local_unnamed_addr #0

declare i32 @pthread_cond_wait(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind
declare i32 @pthread_mutex_unlock(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @POOL_add(ptr noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #2 {
  %4 = getelementptr inbounds i8, ptr %0, i64 96
  %5 = tail call i32 @pthread_mutex_lock(ptr noundef nonnull %4) #3
  %6 = getelementptr inbounds i8, ptr %0, i64 232
  %7 = tail call i32 @isQueueFull(ptr noundef %0)
  %.not10 = icmp eq i32 %7, 0
  br i1 %.not10, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %8 = getelementptr inbounds i8, ptr %0, i64 136
  br label %9

9:                                                ; preds = %.lr.ph, %11
  %10 = load i32, ptr %6, align 8, !tbaa !5
  %.not9 = icmp eq i32 %10, 0
  br i1 %.not9, label %11, label %.critedge

11:                                               ; preds = %9
  %12 = tail call i32 @pthread_cond_wait(ptr noundef nonnull %8, ptr noundef nonnull %4) #3
  %13 = tail call i32 @isQueueFull(ptr noundef nonnull %0)
  %.not = icmp eq i32 %13, 0
  br i1 %.not, label %.critedge, label %9, !llvm.loop !13

.critedge:                                        ; preds = %9, %11, %3
  tail call void @POOL_add_internal(ptr noundef %0, ptr noundef %1, ptr noundef %2)
  %14 = tail call i32 @pthread_mutex_unlock(ptr noundef nonnull %4) #3
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden i32 @isQueueFull(ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare hidden void @POOL_add_internal(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

attributes #0 = { 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 #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, !12, i64 232}
!6 = !{!"POOL_ctx_s", !7, i64 0, !8, i64 24, !11, i64 32, !11, i64 40, !8, i64 48, !11, i64 56, !11, i64 64, !11, i64 72, !11, i64 80, !12, i64 88, !9, i64 96, !9, i64 136, !9, i64 184, !12, i64 232}
!7 = !{!"", !8, i64 0, !8, i64 8, !8, i64 16}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"long", !9, i64 0}
!12 = !{!"int", !9, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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