; LLVM IR from pandax381/microps :: ether (ether_setup_helper)

; 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_device = type { ptr, ptr, i32, [16 x i8], i16, i16, i16, i16, i16, [16 x i8], %union.anon, ptr, ptr }
%union.anon = type { [16 x i8] }

@ETHER_ADDR_BROADCAST = external dso_local constant [6 x i8], align 1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
define dso_local void @ether_setup_helper(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds %struct.net_device, ptr %3, i32 0, i32 4
  store i16 2, ptr %4, align 4, !tbaa !9
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.net_device, ptr %5, i32 0, i32 5
  store i16 1500, ptr %6, align 2, !tbaa !13
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.net_device, ptr %7, i32 0, i32 6
  store i16 288, ptr %8, align 8, !tbaa !14
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.net_device, ptr %9, i32 0, i32 7
  store i16 14, ptr %10, align 2, !tbaa !15
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.net_device, ptr %11, i32 0, i32 8
  store i16 6, ptr %12, align 4, !tbaa !16
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.net_device, ptr %13, i32 0, i32 10
  %15 = getelementptr inbounds [16 x i8], ptr %14, i64 0, i64 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 2 %15, ptr align 1 @ETHER_ADDR_BROADCAST, i64 6, i1 false)
  ret void
}

attributes #0 = { nocallback nofree 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" }

!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 36}
!10 = !{!"net_device", !6, i64 0, !6, i64 8, !11, i64 16, !7, i64 20, !12, i64 36, !12, i64 38, !12, i64 40, !12, i64 42, !12, i64 44, !7, i64 46, !7, i64 62, !6, i64 80, !6, i64 88}
!11 = !{!"int", !7, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = !{!10, !12, i64 38}
!14 = !{!10, !12, i64 40}
!15 = !{!10, !12, i64 42}
!16 = !{!10, !12, i64 44}


; 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"

@ETHER_ADDR_BROADCAST = external dso_local local_unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local void @ether_setup_helper(ptr nocapture noundef writeonly %0) local_unnamed_addr #1 {
  %2 = getelementptr inbounds i8, ptr %0, i64 36
  store <4 x i16> <i16 2, i16 1500, i16 288, i16 14>, ptr %2, align 4, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 44
  store i16 6, ptr %3, align 4, !tbaa !9
  %4 = getelementptr inbounds i8, ptr %0, i64 62
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 2 dereferenceable(6) %4, ptr noundef nonnull align 1 dereferenceable(6) @ETHER_ADDR_BROADCAST, i64 6, i1 false)
  ret void
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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, !6, i64 0}
!6 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 44}
!10 = !{!"net_device", !11, i64 0, !11, i64 8, !12, i64 16, !7, i64 20, !6, i64 36, !6, i64 38, !6, i64 40, !6, i64 42, !6, i64 44, !7, i64 46, !7, i64 62, !11, i64 80, !11, i64 88}
!11 = !{!"any pointer", !7, i64 0}
!12 = !{!"int", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,TailCallElimPass