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

; 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.VDPSprite = type { i16, %union.anon, %union.anon.1, i16 }
%union.anon = type { %struct.anon }
%struct.anon = type { i16 }
%union.anon.1 = type { i16 }

@vdpSpriteCache = external dso_local global [96 x %struct.VDPSprite], align 16

; 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
define dso_local void @VDP_setSpriteFlip(i16 noundef zeroext %0, i8 noundef zeroext %1, i8 noundef zeroext %2) #1 {
  %4 = alloca i16, align 2
  %5 = alloca i8, align 1
  %6 = alloca i8, align 1
  %7 = alloca ptr, align 8
  store i16 %0, ptr %4, align 2, !tbaa !5
  store i8 %1, ptr %5, align 1, !tbaa !9
  store i8 %2, ptr %6, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %8 = load i16, ptr %4, align 2, !tbaa !5
  %9 = zext i16 %8 to i64
  %10 = getelementptr inbounds [96 x %struct.VDPSprite], ptr @vdpSpriteCache, i64 0, i64 %9
  store ptr %10, ptr %7, align 8, !tbaa !10
  %11 = load i8, ptr %5, align 1, !tbaa !9
  %12 = zext i8 %11 to i16
  %13 = load ptr, ptr %7, align 8, !tbaa !10
  %14 = getelementptr inbounds %struct.VDPSprite, ptr %13, i32 0, i32 2
  %15 = load i16, ptr %14, align 2
  %16 = and i16 %12, 1
  %17 = shl i16 %16, 4
  %18 = and i16 %15, -17
  %19 = or i16 %18, %17
  store i16 %19, ptr %14, align 2
  %20 = load i8, ptr %6, align 1, !tbaa !9
  %21 = zext i8 %20 to i16
  %22 = load ptr, ptr %7, align 8, !tbaa !10
  %23 = getelementptr inbounds %struct.VDPSprite, ptr %22, i32 0, i32 2
  %24 = load i16, ptr %23, align 2
  %25 = and i16 %21, 1
  %26 = shl i16 %25, 3
  %27 = and i16 %24, -9
  %28 = or i16 %27, %26
  store i16 %28, ptr %23, align 2
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #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 = !{!"short", !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 = !{!"any pointer", !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"

%struct.VDPSprite = type { i16, %union.anon, %union.anon.1, i16 }
%union.anon = type { %struct.anon }
%struct.anon = type { i16 }
%union.anon.1 = type { i16 }

@vdpSpriteCache = external dso_local local_unnamed_addr global [96 x %struct.VDPSprite], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @VDP_setSpriteFlip(i16 noundef zeroext %0, i8 noundef zeroext %1, i8 noundef zeroext %2) local_unnamed_addr #0 {
  %4 = zext i16 %0 to i64
  %5 = getelementptr inbounds [96 x %struct.VDPSprite], ptr @vdpSpriteCache, i64 0, i64 %4, i32 2
  %6 = load i16, ptr %5, align 4
  %7 = shl i8 %1, 4
  %8 = and i8 %7, 16
  %9 = and i16 %6, -25
  %10 = shl i8 %2, 3
  %11 = and i8 %10, 8
  %12 = or disjoint i8 %11, %8
  %13 = zext nneg i8 %12 to i16
  %14 = or disjoint i16 %9, %13
  store i16 %14, ptr %5, align 4
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, argmem: none, inaccessiblemem: none) 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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass