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6797305: Add LoadUB and LoadUI opcode class

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Add a LoadUB (unsigned byte) and LoadUI (unsigned int) opcode class so we have these load optimizations in the first place and do not need to handle them in the matcher.

Reviewed-by: never, kvn
This commit is contained in:
Christian Thalinger 2009-03-09 03:17:11 -07:00
parent 26d192003f
commit 89cea91c48
17 changed files with 726 additions and 186 deletions
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27
hotspot/src/share/vm/opto/memnode.hpp
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@ -1,5 +1,5 @@
/*
* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2009 Sun Microsystems, Inc. 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
@ -207,6 +207,19 @@ public:
virtual BasicType memory_type() const { return T_BYTE; }
};
//------------------------------LoadUBNode-------------------------------------
// Load a unsigned byte (8bits unsigned) from memory
class LoadUBNode : public LoadNode {
public:
LoadUBNode(Node* c, Node* mem, Node* adr, const TypePtr* at, const TypeInt* ti = TypeInt::UBYTE )
: LoadNode(c, mem, adr, at, ti) {}
virtual int Opcode() const;
virtual uint ideal_reg() const { return Op_RegI; }
virtual Node* Ideal(PhaseGVN *phase, bool can_reshape);
virtual int store_Opcode() const { return Op_StoreB; }
virtual BasicType memory_type() const { return T_BYTE; }
};
//------------------------------LoadUSNode-------------------------------------
// Load an unsigned short/char (16bits unsigned) from memory
class LoadUSNode : public LoadNode {
@ -232,6 +245,18 @@ public:
virtual BasicType memory_type() const { return T_INT; }
};
//------------------------------LoadUI2LNode-----------------------------------
// Load an unsigned integer into long from memory
class LoadUI2LNode : public LoadNode {
public:
LoadUI2LNode(Node* c, Node* mem, Node* adr, const TypePtr* at, const TypeLong* t = TypeLong::UINT)
: LoadNode(c, mem, adr, at, t) {}
virtual int Opcode() const;
virtual uint ideal_reg() const { return Op_RegL; }
virtual int store_Opcode() const { return Op_StoreL; }
virtual BasicType memory_type() const { return T_LONG; }
};
//------------------------------LoadRangeNode----------------------------------
// Load an array length from the array
class LoadRangeNode : public LoadINode {