; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal (Ip4FindMac)

; 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.IGMP_SERVICE_DATA = type { i64, %struct._LIST_ENTRY }
%struct._LIST_ENTRY = type { ptr, ptr }
%struct.IGMP_GROUP = type { %struct._LIST_ENTRY, i64, i32, i64, i8, %struct.EFI_MAC_ADDRESS }
%struct.EFI_MAC_ADDRESS = type { [32 x i8] }

; 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 i64 @Ip4FindMac(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = 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) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 0, ptr %7, align 8, !tbaa !9
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.IGMP_SERVICE_DATA, ptr %8, i32 0, i32 1
  %10 = getelementptr inbounds %struct._LIST_ENTRY, ptr %9, i32 0, i32 0
  %11 = load ptr, ptr %10, align 8, !tbaa !11
  store ptr %11, ptr %5, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %31, %2
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.IGMP_SERVICE_DATA, ptr %14, i32 0, i32 1
  %16 = icmp ne ptr %13, %15
  br i1 %16, label %17, label %35

17:                                               ; preds = %12
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = ptrtoint ptr %18 to i64
  %20 = sub i64 %19, 0
  %21 = inttoptr i64 %20 to ptr
  store ptr %21, ptr %6, align 8, !tbaa !5
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.IGMP_GROUP, ptr %22, i32 0, i32 5
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = call i64 @CompareMem(ptr noundef %23, ptr noundef %24, i64 noundef 32)
  %26 = icmp eq i64 %25, 0
  br i1 %26, label %27, label %30

27:                                               ; preds = %17
  %28 = load i64, ptr %7, align 8, !tbaa !9
  %29 = add nsw i64 %28, 1
  store i64 %29, ptr %7, align 8, !tbaa !9
  br label %30

30:                                               ; preds = %27, %17
  br label %31

31:                                               ; preds = %30
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct._LIST_ENTRY, ptr %32, i32 0, i32 0
  %34 = load ptr, ptr %33, align 8, !tbaa !14
  store ptr %34, ptr %5, align 8, !tbaa !5
  br label %12, !llvm.loop !15

35:                                               ; preds = %12
  %36 = load i64, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret i64 %36
}

declare i64 @CompareMem(ptr noundef, ptr noundef, i64 noundef) #2

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 = { "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, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"", !10, i64 0, !13, i64 8}
!13 = !{!"_LIST_ENTRY", !6, i64 0, !6, i64 8}
!14 = !{!13, !6, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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 uwtable
define dso_local i64 @Ip4FindMac(ptr noundef readonly %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %.089 = load ptr, ptr %3, align 8, !tbaa !5
  %.not10 = icmp eq ptr %.089, %3
  br i1 %.not10, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.0812 = phi ptr [ %.08, %.lr.ph ], [ %.089, %2 ]
  %.011 = phi i64 [ %spec.select, %.lr.ph ], [ 0, %2 ]
  %4 = getelementptr inbounds i8, ptr %.0812, i64 41
  %5 = tail call i64 @CompareMem(ptr noundef nonnull %4, ptr noundef %1, i64 noundef 32) #2
  %6 = icmp eq i64 %5, 0
  %7 = zext i1 %6 to i64
  %spec.select = add nuw nsw i64 %.011, %7
  %.08 = load ptr, ptr %.0812, align 8, !tbaa !5
  %.not = icmp eq ptr %.08, %3
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !10

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.0.lcssa = phi i64 [ 0, %2 ], [ %spec.select, %.lr.ph ]
  ret i64 %.0.lcssa
}

declare i64 @CompareMem(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #1

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 = { "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, !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,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass