jdk8-mips64-public/hotspot: src/cpu/x86/vm/c2_init

5057225: Remove useless I2L conversions
Summary: The optimizer should be told to normalize (AndL (ConvI2L x) 0xFF) to (ConvI2L (AndI x 0xFF)), and then the existing matcher rule will work for free.
Reviewed-by: kvn

     1 /*

     2  * Copyright 2000-2005 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

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    22  *

    23  */

    25 # include "incls/_precompiled.incl"

    26 # include "incls/_c2_init_x86.cpp.incl"

    28 // processor dependent initialization for i486

    30 void Compile::pd_compiler2_init() {

    31   guarantee(CodeEntryAlignment >= InteriorEntryAlignment, "" );

    32   // QQQ presumably all 64bit cpu's support this. Seems like the ifdef could

    33   // simply be left out.

    34 #ifndef AMD64

    35   if (!VM_Version::supports_cmov()) {

    36     ConditionalMoveLimit = 0;

    37   }

    38 #endif // AMD64

    39 }

src/cpu/x86/vm/c2_init_x86.cpp@18a08a7e16b5

src/cpu/x86/vm/c2_init_x86.cpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/cpu/x86/vm/c2_init_x86.cpp@18a08a7e16b5

src/cpu/x86/vm/c2_init_x86.cpp