SkNx_shuffle

src/opts/SkXfermode_opts.h

Index: src/opts/SkXfermode_opts.h
diff --git a/src/opts/SkXfermode_opts.h b/src/opts/SkXfermode_opts.h
index 50bef6ac46ae01b6ae1e6fa0062c36b504139966..69f2b420f5f4e6fe2166d2175803322b622a0906 100644
--- a/src/opts/SkXfermode_opts.h
+++ b/src/opts/SkXfermode_opts.h
@@ -117,7 +117,7 @@ static inline Sk4f a_rgb(const Sk4f& a, const Sk4f& rgb) {
     return a * Sk4f(0,0,0,1) + rgb * Sk4f(1,1,1,0);
 }
 static inline Sk4f alphas(const Sk4f& f) {
-    return Sk4f(f.kth<SK_A32_SHIFT/8>());
+    return SkNx_dup<SK_A32_SHIFT/8>(f);
 }
 
 XFERMODE(ColorDodge) {