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6924259: Remove String.count/String.offset

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Allow a version of String class that doesn't have count and offset fields.

Reviewed-by: never, coleenp
This commit is contained in:
Vladimir Kozlov 2012-05-14 09:36:00 -07:00
parent 17b26a6a0c
commit eb4a860bc3
12 changed files with 365 additions and 191 deletions
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10
hotspot/src/share/vm/opto/graphKit.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2012, 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
@ -781,6 +781,14 @@ class GraphKit : public Phase {
Node* new_array(Node* klass_node, Node* count_val, int nargs,
Node* *return_size_val = NULL);
// java.lang.String helpers
Node* load_String_offset(Node* ctrl, Node* str);
Node* load_String_length(Node* ctrl, Node* str);
Node* load_String_value(Node* ctrl, Node* str);
void store_String_offset(Node* ctrl, Node* str, Node* value);
void store_String_length(Node* ctrl, Node* str, Node* value);
void store_String_value(Node* ctrl, Node* str, Node* value);
// Handy for making control flow
IfNode* create_and_map_if(Node* ctrl, Node* tst, float prob, float cnt) {
IfNode* iff = new (C, 2) IfNode(ctrl, tst, prob, cnt);// New IfNode's