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8161207: remove extra MethodHandle subclass in MethodHandleImpl

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Add intrinsic name to LambdaForm.NamedFunction, but keep IntrinsicMethodHandle; interim solution

Co-authored-by: Vlaidmir Ivanov <vladimir.x.ivanov@oracle.com>
Reviewed-by: psandoz
This commit is contained in:
Ron Pressler 2017-06-13 01:34:30 +03:00
parent b20212e8ce
commit 58eac96b16
3 changed files with 30 additions and 19 deletions
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25
jdk/src/java.base/share/classes/java/lang/invoke/LambdaForm.java
View File

@ -1092,13 +1092,24 @@ class LambdaForm {
final MemberName member;
private @Stable MethodHandle resolvedHandle;
@Stable MethodHandle invoker;
private final MethodHandleImpl.Intrinsic intrinsicName;
NamedFunction(MethodHandle resolvedHandle) {
this(resolvedHandle.internalMemberName(), resolvedHandle);
this(resolvedHandle.internalMemberName(), resolvedHandle, MethodHandleImpl.Intrinsic.NONE);
}
NamedFunction(MethodHandle resolvedHandle, MethodHandleImpl.Intrinsic intrinsic) {
this(resolvedHandle.internalMemberName(), resolvedHandle, intrinsic);
}
NamedFunction(MemberName member, MethodHandle resolvedHandle) {
this(member, resolvedHandle, MethodHandleImpl.Intrinsic.NONE);
}
NamedFunction(MemberName member, MethodHandle resolvedHandle, MethodHandleImpl.Intrinsic intrinsic) {
this.member = member;
this.resolvedHandle = resolvedHandle;
this.intrinsicName = intrinsic;
assert(resolvedHandle == null ||
resolvedHandle.intrinsicName() == MethodHandleImpl.Intrinsic.NONE ||
resolvedHandle.intrinsicName() == intrinsic) : resolvedHandle.intrinsicName() + " != " + intrinsic;
// The following assert is almost always correct, but will fail for corner cases, such as PrivateInvokeTest.
//assert(!isInvokeBasic(member));
}
@ -1111,6 +1122,7 @@ class LambdaForm {
// necessary to pass BigArityTest
this.member = Invokers.invokeBasicMethod(basicInvokerType);
}
this.intrinsicName = MethodHandleImpl.Intrinsic.NONE;
assert(isInvokeBasic(member));
}
@ -1263,8 +1275,7 @@ class LambdaForm {
}
public MethodHandleImpl.Intrinsic intrinsicName() {
return resolvedHandle == null ? MethodHandleImpl.Intrinsic.NONE
: resolvedHandle.intrinsicName();
return intrinsicName;
}
}
@ -1741,15 +1752,15 @@ class LambdaForm {
Name[] idNames = new Name[] { argument(0, L_TYPE), argument(1, type) };
idForm = new LambdaForm(2, idNames, 1, Kind.IDENTITY);
idForm.compileToBytecode();
idFun = new NamedFunction(idMem, MethodHandleImpl.makeIntrinsic(
idMem.getInvocationType(), idForm, MethodHandleImpl.Intrinsic.IDENTITY));
idFun = new NamedFunction(idMem, SimpleMethodHandle.make(idMem.getInvocationType(), idForm),
MethodHandleImpl.Intrinsic.IDENTITY);
Object zeValue = Wrapper.forBasicType(btChar).zero();
Name[] zeNames = new Name[] { argument(0, L_TYPE), new Name(idFun, zeValue) };
zeForm = new LambdaForm(1, zeNames, 1, Kind.ZERO);
zeForm.compileToBytecode();
zeFun = new NamedFunction(zeMem, MethodHandleImpl.makeIntrinsic(
zeMem.getInvocationType(), zeForm, MethodHandleImpl.Intrinsic.ZERO));
zeFun = new NamedFunction(zeMem, SimpleMethodHandle.make(zeMem.getInvocationType(), zeForm),
MethodHandleImpl.Intrinsic.ZERO);
}
LF_zero[ord] = zeForm;

7
jdk/src/java.base/share/classes/java/lang/invoke/LambdaFormEditor.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -541,7 +541,7 @@ class LambdaFormEditor {
// adjust the arguments
MethodHandle aload = MethodHandles.arrayElementGetter(erasedArrayType);
for (int i = 0; i < arrayLength; i++) {
Name loadArgument = new Name(aload, spreadParam, i);
Name loadArgument = new Name(new NamedFunction(aload, Intrinsic.ARRAY_LOAD), spreadParam, i);
buf.insertExpression(exprPos + i, loadArgument);
buf.replaceParameterByCopy(pos + i, exprPos + i);
}
@ -604,7 +604,8 @@ class LambdaFormEditor {
for (int i = 0; i < collectorArity; i++) {
newParams[i] = new Name(pos + i, argType);
}
Name callCombiner = new Name(arrayCollector, (Object[]) /*...*/ newParams);
Name callCombiner = new Name(new NamedFunction(arrayCollector, Intrinsic.NEW_ARRAY),
(Object[]) /*...*/ newParams);
// insert the new expression
int exprPos = lambdaForm.arity();

17
jdk/src/java.base/share/classes/java/lang/invoke/MethodHandleImpl.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2008, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -592,7 +592,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
names[nameCursor++] = new Name(getFunction(NF_checkSpreadArgument), array, spreadArgCount);
for (int j = 0; j < spreadArgCount; i++, j++) {
indexes[i] = nameCursor;
names[nameCursor++] = new Name(aload, array, j);
names[nameCursor++] = new Name(new NamedFunction(aload, Intrinsic.ARRAY_LOAD), array, j);
}
} else if (i < indexes.length) {
indexes[i] = argIndex;
@ -937,7 +937,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
names[PROFILE] = new Name(getFunction(NF_profileBoolean), names[CALL_TEST], names[GET_COUNTERS]);
}
// call selectAlternative
names[SELECT_ALT] = new Name(getConstantHandle(MH_selectAlternative), names[TEST], names[GET_TARGET], names[GET_FALLBACK]);
names[SELECT_ALT] = new Name(new NamedFunction(getConstantHandle(MH_selectAlternative), Intrinsic.SELECT_ALTERNATIVE), names[TEST], names[GET_TARGET], names[GET_FALLBACK]);
// call target or fallback
invokeArgs[0] = names[SELECT_ALT];
@ -1008,7 +1008,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
Object[] args = new Object[invokeBasic.type().parameterCount()];
args[0] = names[GET_COLLECT_ARGS];
System.arraycopy(names, ARG_BASE, args, 1, ARG_LIMIT-ARG_BASE);
names[BOXED_ARGS] = new Name(makeIntrinsic(invokeBasic, Intrinsic.GUARD_WITH_CATCH), args);
names[BOXED_ARGS] = new Name(new NamedFunction(invokeBasic, Intrinsic.GUARD_WITH_CATCH), args);
// t_{i+1}:L=MethodHandleImpl.guardWithCatch(target:L,exType:L,catcher:L,t_{i}:L);
Object[] gwcArgs = new Object[] {names[GET_TARGET], names[GET_CLASS], names[GET_CATCHER], names[BOXED_ARGS]};
@ -1896,7 +1896,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
Object[] args = new Object[invokeBasic.type().parameterCount()];
args[0] = names[GET_COLLECT_ARGS];
System.arraycopy(names, ARG_BASE, args, 1, ARG_LIMIT - ARG_BASE);
names[BOXED_ARGS] = new Name(makeIntrinsic(invokeBasic, Intrinsic.LOOP), args);
names[BOXED_ARGS] = new Name(new NamedFunction(invokeBasic, Intrinsic.LOOP), args);
// t_{i+1}:L=MethodHandleImpl.loop(localTypes:L,clauses:L,t_{i}:L);
Object[] lArgs =
@ -2133,7 +2133,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
Object[] args = new Object[invokeBasic.type().parameterCount()];
args[0] = names[GET_COLLECT_ARGS];
System.arraycopy(names, ARG_BASE, args, 1, ARG_LIMIT-ARG_BASE);
names[BOXED_ARGS] = new Name(makeIntrinsic(invokeBasic, Intrinsic.TRY_FINALLY), args);
names[BOXED_ARGS] = new Name(new NamedFunction(invokeBasic, Intrinsic.TRY_FINALLY), args);
// t_{i+1}:L=MethodHandleImpl.tryFinally(target:L,exType:L,catcher:L,t_{i}:L);
Object[] tfArgs = new Object[] {names[GET_TARGET], names[GET_CLEANUP], names[BOXED_ARGS]};
@ -2225,9 +2225,8 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
return IMPL_LOOKUP.findStatic(MethodHandleImpl.class, "fillNewTypedArray",
MethodType.methodType(Object[].class, Object[].class, Integer.class, Object[].class));
case MH_selectAlternative:
return makeIntrinsic(IMPL_LOOKUP.findStatic(MethodHandleImpl.class, "selectAlternative",
MethodType.methodType(MethodHandle.class, boolean.class, MethodHandle.class, MethodHandle.class)),
Intrinsic.SELECT_ALTERNATIVE);
return IMPL_LOOKUP.findStatic(MethodHandleImpl.class, "selectAlternative",
MethodType.methodType(MethodHandle.class, boolean.class, MethodHandle.class, MethodHandle.class));
case MH_countedLoopPred:
return IMPL_LOOKUP.findStatic(MethodHandleImpl.class, "countedLoopPredicate",
MethodType.methodType(boolean.class, int.class, int.class));