Avoid using Vector API's integer division

jirkamarsik · jirkamarsik · commit 02da7646cb28 · 2025-08-19T22:07:48.000+02:00
diff --git a/wasm/src/org.graalvm.wasm.jdk25/src/org/graalvm/wasm/api/Vector128OpsVectorAPI.java b/wasm/src/org.graalvm.wasm.jdk25/src/org/graalvm/wasm/api/Vector128OpsVectorAPI.java
@@ -1042,8 +1042,7 @@ private static <E, F> ByteVector avgr_u(ByteVector xBytes, ByteVector yBytes,
                     Shape<E> shape, Shape<F> extendedShape,
                     VectorOperators.Conversion<E, F> upcast) {
         Vector<F> one = extendedShape.broadcast(1);
-        Vector<F> two = extendedShape.broadcast(2);
-        return upcastBinopDowncast(xBytes, yBytes, shape, extendedShape, upcast, (x, y) -> x.add(y).add(one).div(two));
+        return upcastBinopDowncast(xBytes, yBytes, shape, extendedShape, upcast, (x, y) -> x.add(y).add(one).lanewise(VectorOperators.LSHR, 1));
     }
 
     private static ByteVector i16x8_q15mulr_sat_s(ByteVector xBytes, ByteVector yBytes) {

Original file line number	Diff line number	Diff line change
`@@ -1042,8 +1042,7 @@ private static <E, F> ByteVector avgr_u(ByteVector xBytes, ByteVector yBytes,`
`1042`	`1042`	`Shape<E> shape, Shape<F> extendedShape,`
`1043`	`1043`	`VectorOperators.Conversion<E, F> upcast) {`
`1044`	`1044`	`Vector<F> one = extendedShape.broadcast(1);`
`1045`		`- Vector<F> two = extendedShape.broadcast(2);`
`1046`		`- return upcastBinopDowncast(xBytes, yBytes, shape, extendedShape, upcast, (x, y) -> x.add(y).add(one).div(two));`
	`1045`	`+ return upcastBinopDowncast(xBytes, yBytes, shape, extendedShape, upcast, (x, y) -> x.add(y).add(one).lanewise(VectorOperators.LSHR, 1));`
`1047`	`1046`	`}`
`1048`	`1047`
`1049`	`1048`	`private static ByteVector i16x8_q15mulr_sat_s(ByteVector xBytes, ByteVector yBytes) {`