; LLVM IR from yinqiwen/ardb :: src/common/util/network_helper.ll (ZN4ardb8hton_u64Em)

; 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"

; 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 i64 @_ZN4ardb8hton_u64Em(i64 noundef %0) #1 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  store i64 %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 42, ptr %4, align 4, !tbaa !9
  %7 = load i8, ptr %4, align 4, !tbaa !11
  %8 = sext i8 %7 to i32
  %9 = icmp eq i32 %8, 42
  br i1 %9, label %10, label %25

10:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %11 = load i64, ptr %3, align 8, !tbaa !5
  %12 = and i64 %11, 4294967295
  %13 = trunc i64 %12 to i32
  %14 = call noundef i32 @_ZL10__bswap_32j(i32 noundef %13)
  %15 = zext i32 %14 to i64
  store i64 %15, ptr %5, align 8, !tbaa !5
  %16 = load i64, ptr %5, align 8, !tbaa !5
  %17 = shl i64 %16, 32
  store i64 %17, ptr %5, align 8, !tbaa !5
  %18 = load i64, ptr %5, align 8, !tbaa !5
  %19 = load i64, ptr %3, align 8, !tbaa !5
  %20 = lshr i64 %19, 32
  %21 = trunc i64 %20 to i32
  %22 = call noundef i32 @_ZL10__bswap_32j(i32 noundef %21)
  %23 = zext i32 %22 to i64
  %24 = or i64 %18, %23
  store i64 %24, ptr %2, align 8
  store i32 1, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %27

25:                                               ; preds = %1
  %26 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %26, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %27

27:                                               ; preds = %25, %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  %28 = load i64, ptr %2, align 8
  ret i64 %28
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare hidden noundef i32 @_ZL10__bswap_32j(i32 noundef) #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 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !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: mustprogress nounwind uwtable
define dso_local noundef i64 @_ZN4ardb8hton_u64Em(i64 noundef %0) local_unnamed_addr #0 {
  %2 = trunc i64 %0 to i32
  %3 = tail call noundef i32 @_ZL10__bswap_32j(i32 noundef %2)
  %4 = lshr i64 %0, 32
  %5 = trunc nuw i64 %4 to i32
  %6 = tail call noundef i32 @_ZL10__bswap_32j(i32 noundef %5)
  %7 = zext i32 %3 to i64
  %8 = shl nuw i64 %7, 32
  %9 = zext i32 %6 to i64
  %10 = or disjoint i64 %8, %9
  ret i64 %10
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare hidden noundef i32 @_ZL10__bswap_32j(i32 noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { 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" }

!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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass