; LLVM IR from openssl/openssl :: ssl (priority_queue)

; 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.ossl_pqueue_st = type { ptr, ptr, ptr, i64, i64, i64 }
%struct.pq_heap_st = type { ptr, 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: nounwind uwtable
declare dso_local void @ossl_pqueue_free(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @ossl_pqueue_pop_free(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = icmp ne ptr %6, null
  br i1 %7, label %8, label %29

8:                                                ; preds = %2
  store i64 0, ptr %5, align 8, !tbaa !9
  br label %9

9:                                                ; preds = %24, %8
  %10 = load i64, ptr %5, align 8, !tbaa !9
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.ossl_pqueue_st, ptr %11, i32 0, i32 3
  %13 = load i64, ptr %12, align 8, !tbaa !11
  %14 = icmp ult i64 %10, %13
  br i1 %14, label %15, label %27

15:                                               ; preds = %9
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.ossl_pqueue_st, ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8, !tbaa !13
  %20 = load i64, ptr %5, align 8, !tbaa !9
  %21 = getelementptr inbounds %struct.pq_heap_st, ptr %19, i64 %20
  %22 = getelementptr inbounds %struct.pq_heap_st, ptr %21, i32 0, i32 0
  %23 = load ptr, ptr %22, align 8, !tbaa !14
  call void %16(ptr noundef %23)
  br label %24

24:                                               ; preds = %15
  %25 = load i64, ptr %5, align 8, !tbaa !9
  %26 = add i64 %25, 1
  store i64 %26, ptr %5, align 8, !tbaa !9
  br label %9, !llvm.loop !16

27:                                               ; preds = %9
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  call void @ossl_pqueue_free(ptr noundef %28)
  br label %29

29:                                               ; preds = %27, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret void
}

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 = { 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, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 24}
!12 = !{!"ossl_pqueue_st", !6, i64 0, !6, i64 8, !6, i64 16, !10, i64 24, !10, i64 32, !10, i64 40}
!13 = !{!12, !6, i64 0}
!14 = !{!15, !6, i64 0}
!15 = !{!"pq_heap_st", !6, i64 0, !10, i64 8}
!16 = distinct !{!16, !17}
!17 = !{!"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"

%struct.pq_heap_st = type { ptr, i64 }

; Function Attrs: nounwind uwtable
declare dso_local void @ossl_pqueue_free(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @ossl_pqueue_pop_free(ptr noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %11, label %.preheader

.preheader:                                       ; preds = %2
  %3 = getelementptr inbounds i8, ptr %0, i64 24
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %.not9 = icmp eq i64 %4, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.08 = phi i64 [ %8, %.lr.ph ], [ 0, %.preheader ]
  %5 = load ptr, ptr %0, align 8, !tbaa !11
  %6 = getelementptr inbounds %struct.pq_heap_st, ptr %5, i64 %.08
  %7 = load ptr, ptr %6, align 8, !tbaa !12
  tail call void %1(ptr noundef %7) #1
  %8 = add nuw i64 %.08, 1
  %9 = load i64, ptr %3, align 8, !tbaa !5
  %10 = icmp ult i64 %8, %9
  br i1 %10, label %.lr.ph, label %._crit_edge, !llvm.loop !14

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  tail call void @ossl_pqueue_free(ptr noundef nonnull %0)
  br label %11

11:                                               ; preds = %._crit_edge, %2
  ret void
}

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 = { 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, !10, i64 24}
!6 = !{!"ossl_pqueue_st", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24, !10, i64 32, !10, i64 40}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!13, !7, i64 0}
!13 = !{!"pq_heap_st", !7, i64 0, !10, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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