; LLVM IR from openanolis/openssl :: ssl/quic (quic_txpim)

; 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.quic_txpim_st = type { %struct.quic_txpim_pkt_ex_list, i64 }
%struct.quic_txpim_pkt_ex_list = type { ptr, ptr }
%struct.quic_txpim_pkt_ex_st = type { %struct.quic_txpim_pkt_st, ptr, ptr, ptr, i64, i64, i8 }
%struct.quic_txpim_pkt_st = type { %struct.ossl_ackm_tx_pkt_st, ptr, ptr, i8 }
%struct.ossl_ackm_tx_pkt_st = type { i64, i64, %struct.OSSL_TIME, i64, i8, ptr, ptr, ptr, ptr, %struct.anon, ptr, ptr }
%struct.OSSL_TIME = type { i64 }
%struct.anon = type { ptr, ptr, ptr }

; 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
define dso_local ptr @ossl_quic_txpim_pkt_alloc(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = call ptr @txpim_get_free(ptr noundef %6)
  store ptr %7, ptr %4, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %10, label %11

10:                                               ; preds = %1
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %22

11:                                               ; preds = %1
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  call void @txpim_clear(ptr noundef %12)
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.quic_txpim_st, ptr %13, i32 0, i32 0
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  call void @list_remove(ptr noundef %14, ptr noundef %15)
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.quic_txpim_st, ptr %16, i32 0, i32 1
  %18 = load i64, ptr %17, align 8, !tbaa !9
  %19 = add i64 %18, 1
  store i64 %19, ptr %17, align 8, !tbaa !9
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.quic_txpim_pkt_ex_st, ptr %20, i32 0, i32 0
  store ptr %21, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %22

22:                                               ; preds = %11, %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  %23 = load ptr, ptr %2, align 8
  ret ptr %23
}

; Function Attrs: nounwind uwtable
declare hidden ptr @txpim_get_free(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare hidden void @txpim_clear(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare hidden void @list_remove(ptr noundef, ptr noundef) #1

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, !12, i64 16}
!10 = !{!"quic_txpim_st", !11, i64 0, !12, i64 16}
!11 = !{!"quic_txpim_pkt_ex_list", !6, i64 0, !6, i64 8}
!12 = !{!"long", !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"

; Function Attrs: nounwind uwtable
define dso_local ptr @ossl_quic_txpim_pkt_alloc(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call ptr @txpim_get_free(ptr noundef %0)
  %3 = icmp eq ptr %2, null
  br i1 %3, label %8, label %4

4:                                                ; preds = %1
  tail call void @txpim_clear(ptr noundef nonnull %2)
  tail call void @list_remove(ptr noundef %0, ptr noundef nonnull %2)
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = load i64, ptr %5, align 8, !tbaa !5
  %7 = add i64 %6, 1
  store i64 %7, ptr %5, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %1, %4
  ret ptr %2
}

; Function Attrs: nounwind uwtable
declare hidden ptr @txpim_get_free(ptr noundef) local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
declare hidden void @list_remove(ptr noundef, ptr noundef) local_unnamed_addr #0

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" }

!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, !11, i64 16}
!6 = !{!"quic_txpim_st", !7, i64 0, !11, i64 16}
!7 = !{!"quic_txpim_pkt_ex_list", !8, i64 0, !8, i64 8}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"long", !9, i64 0}


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