; LLVM IR from xing1357/SimpleOS :: src (vesa)

; 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.REGISTERS16 = type { i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16 }

; 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 nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

declare void @int86(i8 noundef zeroext, ptr noundef, ptr noundef) #2

declare ptr @memcpy(ptr noundef, ptr noundef, i32 noundef) #2

; 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 void @get_vbe_mode_info(i16 noundef zeroext %0, ptr noundef %1) #3 {
  %3 = alloca i16, align 2
  %4 = alloca ptr, align 8
  %5 = alloca %struct.REGISTERS16, align 2
  %6 = alloca %struct.REGISTERS16, align 2
  store i16 %0, ptr %3, align 2, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 28, ptr %5) #4
  call void @llvm.memset.p0.i64(ptr align 2 %5, i8 0, i64 28, i1 false)
  call void @llvm.lifetime.start.p0(i64 28, ptr %6) #4
  call void @llvm.memset.p0.i64(ptr align 2 %6, i8 0, i64 28, i1 false)
  %7 = getelementptr inbounds %struct.REGISTERS16, ptr %5, i32 0, i32 7
  store i16 20225, ptr %7, align 2, !tbaa !11
  %8 = load i16, ptr %3, align 2, !tbaa !5
  %9 = getelementptr inbounds %struct.REGISTERS16, ptr %5, i32 0, i32 6
  store i16 %8, ptr %9, align 2, !tbaa !13
  %10 = getelementptr inbounds %struct.REGISTERS16, ptr %5, i32 0, i32 0
  store i16 -32256, ptr %10, align 2, !tbaa !14
  call void @int86(i8 noundef zeroext 16, ptr noundef %5, ptr noundef %6)
  %11 = load ptr, ptr %4, align 8, !tbaa !9
  %12 = call ptr @memcpy(ptr noundef %11, ptr noundef getelementptr inbounds (i8, ptr inttoptr (i64 32256 to ptr), i64 1024), i32 noundef 264)
  call void @llvm.lifetime.end.p0(i64 28, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 28, ptr %5) #4
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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 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 #4 = { 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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 14}
!12 = !{!"", !6, i64 0, !6, i64 2, !6, i64 4, !6, i64 6, !6, i64 8, !6, i64 10, !6, i64 12, !6, i64 14, !6, i64 16, !6, i64 18, !6, i64 20, !6, i64 22, !6, i64 24, !6, i64 26}
!13 = !{!12, !6, i64 12}
!14 = !{!12, !6, 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"

%struct.REGISTERS16 = type { i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16 }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

declare void @int86(i8 noundef zeroext, ptr noundef, ptr noundef) local_unnamed_addr #2

declare ptr @memcpy(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress 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 void @get_vbe_mode_info(i16 noundef zeroext %0, ptr noundef %1) local_unnamed_addr #3 {
  %3 = alloca %struct.REGISTERS16, align 2
  %4 = alloca %struct.REGISTERS16, align 2
  call void @llvm.lifetime.start.p0(i64 28, ptr nonnull %3) #4
  %5 = getelementptr inbounds i8, ptr %3, i64 2
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 2 dereferenceable(28) %5, i8 0, i64 26, i1 false)
  call void @llvm.lifetime.start.p0(i64 28, ptr nonnull %4) #4
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 2 dereferenceable(28) %4, i8 0, i64 28, i1 false)
  %6 = getelementptr inbounds i8, ptr %3, i64 14
  store i16 20225, ptr %6, align 2, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %3, i64 12
  store i16 %0, ptr %7, align 2, !tbaa !10
  store i16 -32256, ptr %3, align 2, !tbaa !11
  call void @int86(i8 noundef zeroext 16, ptr noundef nonnull %3, ptr noundef nonnull %4) #4
  %8 = call ptr @memcpy(ptr noundef %1, ptr noundef nonnull inttoptr (i64 33280 to ptr), i32 noundef 264) #4
  call void @llvm.lifetime.end.p0(i64 28, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 28, ptr nonnull %3) #4
  ret void
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
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 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 #4 = { 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 14}
!6 = !{!"", !7, i64 0, !7, i64 2, !7, i64 4, !7, i64 6, !7, i64 8, !7, i64 10, !7, i64 12, !7, i64 14, !7, i64 16, !7, i64 18, !7, i64 20, !7, i64 22, !7, i64 24, !7, i64 26}
!7 = !{!"short", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 12}
!11 = !{!6, !7, i64 0}


; Effective O3 passes: DSEPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass