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8287013: StringConcatFactory: remove short and byte mixers/prependers

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Reviewed-by: jlaskey
This commit is contained in:
Claes Redestad 2022-05-20 08:17:23 +00:00
parent 828dc89ab8
commit d5d19f52ce
2 changed files with 13 additions and 75 deletions
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32
src/java.base/share/classes/java/lang/invoke/StringConcatFactory.java
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@ -496,7 +496,19 @@ public final class StringConcatFactory {
Class<?>[] ptypes = mt.erase().parameterArray();
MethodHandle[] filters = null;
for (int i = 0; i < ptypes.length; i++) {
MethodHandle filter = stringifierFor(ptypes[i]);
Class<?> cl = ptypes[i];
MethodHandle filter = null;
if (cl == byte.class || cl == short.class) {
// use int for subword integral types; still need special mixers
// and prependers for char, boolean
ptypes[i] = int.class;
} else if (cl == Object.class) {
filter = objectStringifier();
} else if (cl == float.class) {
filter = floatStringifier();
} else if (cl == double.class) {
filter = doubleStringifier();
}
if (filter != null) {
if (filters == null) {
filters = new MethodHandle[ptypes.length];
@ -825,24 +837,6 @@ public final class StringConcatFactory {
MIXERS = new ConcurrentHashMap<>();
}
/**
* Returns a stringifier for references and floats/doubles only.
* Always returns null for other primitives.
*
* @param t class to stringify
* @return stringifier; null, if not available
*/
private static MethodHandle stringifierFor(Class<?> t) {
if (t == Object.class) {
return objectStringifier();
} else if (t == float.class) {
return floatStringifier();
} else if (t == double.class) {
return doubleStringifier();
}
return null;
}
private static MethodHandle lookupStatic(Lookup lookup, Class<?> refc, String name,
Class<?> rtype, Class<?>... ptypes) {
try {