; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/MdePkg/Library (StrToIPv4Addr)

; 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.EFI_IPv4_ADDRESS = type { [4 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
declare dso_local ptr @SplitStr(ptr noundef, i16 noundef zeroext) #1

; Function Attrs: nounwind uwtable
declare dso_local i64 @Strtoi(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @StrToIPv4Addr(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = 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) #2
  store i64 0, ptr %5, align 8, !tbaa !9
  br label %6

6:                                                ; preds = %18, %2
  %7 = load i64, ptr %5, align 8, !tbaa !9
  %8 = icmp ult i64 %7, 4
  br i1 %8, label %9, label %21

9:                                                ; preds = %6
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = call ptr @SplitStr(ptr noundef %10, i16 noundef zeroext 46)
  %12 = call i64 @Strtoi(ptr noundef %11)
  %13 = trunc i64 %12 to i8
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.EFI_IPv4_ADDRESS, ptr %14, i32 0, i32 0
  %16 = load i64, ptr %5, align 8, !tbaa !9
  %17 = getelementptr inbounds [4 x i8], ptr %15, i64 0, i64 %16
  store i8 %13, ptr %17, align 1, !tbaa !11
  br label %18

18:                                               ; preds = %9
  %19 = load i64, ptr %5, align 8, !tbaa !9
  %20 = add i64 %19, 1
  store i64 %20, ptr %5, align 8, !tbaa !9
  br label %6, !llvm.loop !12

21:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret void
}

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, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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
declare dso_local ptr @SplitStr(ptr noundef, i16 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @Strtoi(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @StrToIPv4Addr(ptr noundef %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = tail call ptr @SplitStr(ptr noundef %0, i16 noundef zeroext 46)
  %4 = tail call i64 @Strtoi(ptr noundef %3)
  %5 = trunc i64 %4 to i8
  store i8 %5, ptr %1, align 1, !tbaa !5
  %6 = tail call ptr @SplitStr(ptr noundef %0, i16 noundef zeroext 46)
  %7 = tail call i64 @Strtoi(ptr noundef %6)
  %8 = trunc i64 %7 to i8
  %9 = getelementptr inbounds i8, ptr %1, i64 1
  store i8 %8, ptr %9, align 1, !tbaa !5
  %10 = tail call ptr @SplitStr(ptr noundef %0, i16 noundef zeroext 46)
  %11 = tail call i64 @Strtoi(ptr noundef %10)
  %12 = trunc i64 %11 to i8
  %13 = getelementptr inbounds i8, ptr %1, i64 2
  store i8 %12, ptr %13, align 1, !tbaa !5
  %14 = tail call ptr @SplitStr(ptr noundef %0, i16 noundef zeroext 46)
  %15 = tail call i64 @Strtoi(ptr noundef %14)
  %16 = trunc i64 %15 to i8
  %17 = getelementptr inbounds i8, ptr %1, i64 3
  store i8 %16, ptr %17, align 1, !tbaa !5
  ret void
}

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, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass