; LLVM IR from Stephane-D/SGDK :: src (vdp)

; 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
declare dso_local zeroext i16 @getAdjustedVCounterInternal(i16 noundef zeroext, i16 noundef zeroext) #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i16 @VDP_getAdjustedVCounter() #0 {
  %1 = load volatile i16, ptr inttoptr (i64 12582916 to ptr), align 2, !tbaa !5
  %2 = zext i16 %1 to i32
  %3 = and i32 %2, 8
  %4 = trunc i32 %3 to i16
  %5 = load volatile i16, ptr inttoptr (i64 12582920 to ptr), align 2, !tbaa !5
  %6 = zext i16 %5 to i32
  %7 = ashr i32 %6, 8
  %8 = trunc i32 %7 to i16
  %9 = call zeroext i16 @getAdjustedVCounterInternal(i16 noundef zeroext %4, i16 noundef zeroext %8)
  ret i16 %9
}

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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; 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 zeroext i16 @getAdjustedVCounterInternal(i16 noundef zeroext, i16 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i16 @VDP_getAdjustedVCounter() local_unnamed_addr #0 {
  %1 = load volatile i16, ptr inttoptr (i64 12582916 to ptr), align 4, !tbaa !5
  %2 = and i16 %1, 8
  %3 = load volatile i16, ptr inttoptr (i64 12582920 to ptr), align 8, !tbaa !5
  %4 = lshr i16 %3, 8
  %5 = tail call zeroext i16 @getAdjustedVCounterInternal(i16 noundef zeroext %2, i16 noundef zeroext %4)
  ret i16 %5
}

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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferAlignmentPass,InstCombinePass,TailCallElimPass