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src/hotspot/share/runtime/sharedRuntimeTrans.cpp

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   1 /*
   2  * Copyright (c) 2005, 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "prims/jni.h"
  27 #include "runtime/interfaceSupport.hpp"
  28 #include "runtime/sharedRuntime.hpp"
  29 
  30 // This file contains copies of the fdlibm routines used by
  31 // StrictMath. It turns out that it is almost always required to use
  32 // these runtime routines; the Intel CPU doesn't meet the Java
  33 // specification for sin/cos outside a certain limited argument range,
  34 // and the SPARC CPU doesn't appear to have sin/cos instructions. It
  35 // also turns out that avoiding the indirect call through function
  36 // pointer out to libjava.so in SharedRuntime speeds these routines up
  37 // by roughly 15% on both Win32/x86 and Solaris/SPARC.
  38 
  39 // Enabling optimizations in this file causes incorrect code to be
  40 // generated; can not figure out how to turn down optimization for one
  41 // file in the IDE on Windows
  42 #ifdef WIN32
  43 # pragma warning( disable: 4748 ) // /GS can not protect parameters and local variables from local buffer overrun because optimizations are disabled in function
  44 # pragma optimize ( "", off )
  45 #endif
  46 


   1 /*
   2  * Copyright (c) 2005, 2017, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "jni.h"
  27 #include "runtime/interfaceSupport.hpp"
  28 #include "runtime/sharedRuntime.hpp"
  29 
  30 // This file contains copies of the fdlibm routines used by
  31 // StrictMath. It turns out that it is almost always required to use
  32 // these runtime routines; the Intel CPU doesn't meet the Java
  33 // specification for sin/cos outside a certain limited argument range,
  34 // and the SPARC CPU doesn't appear to have sin/cos instructions. It
  35 // also turns out that avoiding the indirect call through function
  36 // pointer out to libjava.so in SharedRuntime speeds these routines up
  37 // by roughly 15% on both Win32/x86 and Solaris/SPARC.
  38 
  39 // Enabling optimizations in this file causes incorrect code to be
  40 // generated; can not figure out how to turn down optimization for one
  41 // file in the IDE on Windows
  42 #ifdef WIN32
  43 # pragma warning( disable: 4748 ) // /GS can not protect parameters and local variables from local buffer overrun because optimizations are disabled in function
  44 # pragma optimize ( "", off )
  45 #endif
  46 


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