; LLVM IR from mist64/perfect6502 :: perfect6502 (writeDataBus)

; 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"

; Function Attrs: nounwind uwtable
define dso_local void @writeDataBus(ptr noundef %0, i8 noundef zeroext %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i8, align 1
  %5 = alloca [8 x i16], align 2
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i8 %1, ptr %4, align 1, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  store i16 1005, ptr %5, align 2, !tbaa !10
  %7 = getelementptr inbounds i16, ptr %5, i64 1
  store i16 82, ptr %7, align 2, !tbaa !10
  %8 = getelementptr inbounds i16, ptr %5, i64 2
  store i16 945, ptr %8, align 2, !tbaa !10
  %9 = getelementptr inbounds i16, ptr %5, i64 3
  store i16 650, ptr %9, align 2, !tbaa !10
  %10 = getelementptr inbounds i16, ptr %5, i64 4
  store i16 1393, ptr %10, align 2, !tbaa !10
  %11 = getelementptr inbounds i16, ptr %5, i64 5
  store i16 175, ptr %11, align 2, !tbaa !10
  %12 = getelementptr inbounds i16, ptr %5, i64 6
  store i16 1591, ptr %12, align 2, !tbaa !10
  %13 = getelementptr inbounds i16, ptr %5, i64 7
  store i16 1349, ptr %13, align 2, !tbaa !10
  %14 = getelementptr inbounds [8 x i16], ptr %5, i64 0, i64 0
  %15 = load i8, ptr %4, align 1, !tbaa !9
  %16 = zext i8 %15 to i32
  call void @writeNodes(ptr noundef %6, i32 noundef 8, ptr noundef %14, i32 noundef %16)
  ret void
}

declare void @writeNodes(ptr noundef, i32 noundef, ptr noundef, i32 noundef) #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" }

!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 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"short", !7, 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"

; Function Attrs: nounwind uwtable
define dso_local void @writeDataBus(ptr noundef %0, i8 noundef zeroext %1) local_unnamed_addr #0 {
  %3 = alloca [8 x i16], align 16
  store <8 x i16> <i16 1005, i16 82, i16 945, i16 650, i16 1393, i16 175, i16 1591, i16 1349>, ptr %3, align 16, !tbaa !5
  %4 = zext i8 %1 to i32
  call void @writeNodes(ptr noundef %0, i32 noundef 8, ptr noundef nonnull %3, i32 noundef %4) #2
  ret void
}

declare void @writeNodes(ptr noundef, i32 noundef, ptr noundef, i32 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, !6, i64 0}
!6 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InstCombinePass,SLPVectorizerPass,SROAPass