Mon, 26 Sep 2011 10:24:05 -0700
7081933: Use zeroing elimination optimization for large array
Summary: Don't zero new typeArray during runtime call if the allocation is followed by arraycopy into it.
Reviewed-by: twisti
duke@435 | 1 | /* |
stefank@2314 | 2 | * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef SHARE_VM_OPTO_ADLCVMDEPS_HPP |
stefank@2314 | 26 | #define SHARE_VM_OPTO_ADLCVMDEPS_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | // adlcVMDeps.hpp is used by both adlc and vm builds. |
stefank@2314 | 29 | // Only include allocation.hpp when we're not building adlc. |
stefank@2314 | 30 | #ifndef SHARE_VM_ADLC_ARENA_HPP |
stefank@2314 | 31 | #include "memory/allocation.hpp" |
stefank@2314 | 32 | #endif |
stefank@2314 | 33 | |
duke@435 | 34 | // Declare commonly known constant and data structures between the |
duke@435 | 35 | // ADLC and the VM |
duke@435 | 36 | // |
duke@435 | 37 | |
duke@435 | 38 | class AdlcVMDeps : public AllStatic { |
duke@435 | 39 | public: |
duke@435 | 40 | // Mirror of TypeFunc types |
duke@435 | 41 | enum { Control, I_O, Memory, FramePtr, ReturnAdr, Parms }; |
duke@435 | 42 | |
duke@435 | 43 | enum Cisc_Status { Not_cisc_spillable = -1 }; |
duke@435 | 44 | |
duke@435 | 45 | // Mirror of OptoReg::Name names |
duke@435 | 46 | enum Name { |
duke@435 | 47 | Physical = 0 // Start of physical regs |
duke@435 | 48 | }; |
duke@435 | 49 | |
duke@435 | 50 | // relocInfo |
duke@435 | 51 | static const char* oop_reloc_type() { return "relocInfo::oop_type"; } |
duke@435 | 52 | static const char* none_reloc_type() { return "relocInfo::none"; } |
duke@435 | 53 | }; |
stefank@2314 | 54 | |
stefank@2314 | 55 | #endif // SHARE_VM_OPTO_ADLCVMDEPS_HPP |