; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library (NetItemInMap)

; 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.NET_MAP = type { %struct._LIST_ENTRY, %struct._LIST_ENTRY, i64 }
%struct._LIST_ENTRY = type { ptr, ptr }
%struct.NET_MAP_ITEM = type { %struct._LIST_ENTRY, 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 zeroext i8 @NetItemInMap(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i8, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.NET_MAP, ptr %8, i32 0, i32 0
  %10 = getelementptr inbounds %struct._LIST_ENTRY, ptr %9, i32 0, i32 0
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  store ptr %11, ptr %6, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %24, %2
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.NET_MAP, ptr %14, i32 0, i32 0
  %16 = icmp ne ptr %13, %15
  br i1 %16, label %17, label %28

17:                                               ; preds = %12
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.NET_MAP_ITEM, ptr %19, i32 0, i32 0
  %21 = icmp eq ptr %18, %20
  br i1 %21, label %22, label %23

22:                                               ; preds = %17
  store i8 1, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %29

23:                                               ; preds = %17
  br label %24

24:                                               ; preds = %23
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct._LIST_ENTRY, ptr %25, i32 0, i32 0
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  store ptr %27, ptr %6, align 8, !tbaa !5
  br label %12, !llvm.loop !14

28:                                               ; preds = %12
  store i8 0, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %29

29:                                               ; preds = %28, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %30 = load i8, ptr %3, align 1
  ret i8 %30
}

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, !6, i64 0}
!10 = !{!"", !11, i64 0, !11, i64 16, !12, i64 32}
!11 = !{!"_LIST_ENTRY", !6, i64 0, !6, i64 8}
!12 = !{!"long long", !7, i64 0}
!13 = !{!11, !6, 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: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local zeroext range(i8 0, 2) i8 @NetItemInMap(ptr noundef readonly %0, ptr noundef readnone %1) local_unnamed_addr #0 {
  br label %3

3:                                                ; preds = %4, %2
  %.0.in = phi ptr [ %0, %2 ], [ %.0, %4 ]
  %.0 = load ptr, ptr %.0.in, align 8, !tbaa !5
  %.not = icmp eq ptr %.0, %0
  br i1 %.not, label %6, label %4

4:                                                ; preds = %3
  %5 = icmp eq ptr %.0, %1
  br i1 %5, label %6, label %3, !llvm.loop !10

6:                                                ; preds = %3, %4
  %.06 = phi i8 [ 1, %4 ], [ 0, %3 ]
  ret i8 %.06
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) 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, !7, i64 0}
!6 = !{!"_LIST_ENTRY", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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