jdk8-mips64-public/hotspot: src/share/vm/utilities/globalDefinitions

src/share/vm/utilities/globalDefinitions_xlc.hpp@aefa2e84b424 (annotated)

src/share/vm/utilities/globalDefinitions_xlc.hpp

Thu, 19 Mar 2015 19:53:34 +0100

author: zmajo
date: Thu, 19 Mar 2015 19:53:34 +0100
changeset 7638: aefa2e84b424
parent 7001: b6a8cc1e0d92
child 9858: b985cbb00e68
permissions: -rw-r--r--

8074869: C2 code generator can replace -0.0f with +0.0f on Linux
Summary: Instead of 'fpclass', use cast float->int and double->long to check if value is +0.0f and +0.0d, respectively.
Reviewed-by: kvn, simonis, dlong

 /*
  * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2012, 2013 SAP AG. 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP
 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP
 #include "prims/jni.h"
 // This file holds compiler-dependent includes,
 // globally used constants & types, class (forward)
 // declarations and a few frequently used utility functions.
 #include <ctype.h>
 #include <string.h>
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <wchar.h>
 #include <math.h>
 #include <time.h>
 #include <fcntl.h>
 #include <dlfcn.h>
 #include <pthread.h>
 #include <limits.h>
 #include <errno.h>
 #include <stdint.h>
 // Use XLC compiler builtins instead of inline assembler
 #define USE_XLC_BUILTINS
 #ifdef USE_XLC_BUILTINS
 #include <builtins.h>
   #if __IBMCPP__ < 1000
   // the funtion prototype for __dcbtst(void *) is missing in XLC V8.0
   // I could compile a little test, where I provided the prototype.
   // The generated code was correct there. This is the prototype:
   // extern "builtin" void __dcbtst (void *);
   // For now we don't make use of it when compiling with XLC V8.0
   #else
   // __IBMCPP__ >= 1000
   // XLC V10 provides the prototype for __dcbtst (void *);
   #define USE_XLC_PREFETCH_WRITE_BUILTIN
   #endif
 #endif // USE_XLC_BUILTINS
 // NULL vs NULL_WORD:
 // On Linux NULL is defined as a special type '__null'. Assigning __null to
 // integer variable will cause gcc warning. Use NULL_WORD in places where a
 // pointer is stored as integer value.  On some platforms, sizeof(intptr_t) >
 // sizeof(void*), so here we want something which is integer type, but has the
 // same size as a pointer.
 #ifdef __GNUC__
   #error XLC and __GNUC__?
 #else
   #define NULL_WORD  NULL
 #endif
 // AIX also needs a 64 bit NULL to work as a null address pointer.
 // Most system includes on AIX would define it as an int 0 if not already defined with one
 // exception: /usr/include/dirent.h will unconditionally redefine NULL to int 0 again.
 // In this case you need to copy the following defines to a position after #include <dirent.h>
 // (see jmv_aix.h).
 #ifdef AIX
   #ifdef _LP64
     #undef NULL
     #define NULL 0L
   #else
     #ifndef NULL
       #define NULL 0
     #endif
   #endif
 #endif // AIX
 // Compiler-specific primitive types
 // All defs of int (uint16_6 etc) are defined in AIX' /usr/include/stdint.h
 // Additional Java basic types
 typedef uint8_t  jubyte;
 typedef uint16_t jushort;
 typedef uint32_t juint;
 typedef uint64_t julong;
 //----------------------------------------------------------------------------------------------------
 // Constant for jlong (specifying an long long canstant is C++ compiler specific)
 // Build a 64bit integer constant
 #define CONST64(x)  (x ## LL)
 #define UCONST64(x) (x ## ULL)
 const jlong min_jlong = CONST64(0x8000000000000000);
 const jlong max_jlong = CONST64(0x7fffffffffffffff);
 //----------------------------------------------------------------------------------------------------
 // Debugging
 #define DEBUG_EXCEPTION ::abort();
 extern "C" void breakpoint();
 #define BREAKPOINT ::breakpoint()
 // checking for nanness
 #ifdef AIX
 inline int g_isnan(float  f) { return isnan(f); }
 inline int g_isnan(double f) { return isnan(f); }
 #else
 #error "missing platform-specific definition here"
 #endif
 // Checking for finiteness
 inline int g_isfinite(jfloat  f)                 { return finite(f); }
 inline int g_isfinite(jdouble f)                 { return finite(f); }
 // Wide characters
 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
 // Portability macros
 #define PRAGMA_INTERFACE             #pragma interface
 #define PRAGMA_IMPLEMENTATION        #pragma implementation
 #define VALUE_OBJ_CLASS_SPEC
 // Formatting.
 #ifdef _LP64
 #define FORMAT64_MODIFIER "l"
 #else // !_LP64
 #define FORMAT64_MODIFIER "ll"
 #endif // _LP64
 // Cannot use xlc's offsetof as implementation of hotspot's
 // offset_of(), because xlc warns about applying offsetof() to non-POD
 // object and xlc cannot compile the expression offsetof(DataLayout,
 // _cells[index]) in DataLayout::cell_offset() .  Therefore we define
 // offset_of as it is defined for gcc.
 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)
 // Some constant sizes used throughout the AIX port
 #define SIZE_1K   ((uint64_t)         0x400ULL)
 #define SIZE_4K   ((uint64_t)        0x1000ULL)
 #define SIZE_64K  ((uint64_t)       0x10000ULL)
 #define SIZE_1M   ((uint64_t)      0x100000ULL)
 #define SIZE_4M   ((uint64_t)      0x400000ULL)
 #define SIZE_8M   ((uint64_t)      0x800000ULL)
 #define SIZE_16M  ((uint64_t)     0x1000000ULL)
 #define SIZE_256M ((uint64_t)    0x10000000ULL)
 #define SIZE_1G   ((uint64_t)    0x40000000ULL)
 #define SIZE_2G   ((uint64_t)    0x80000000ULL)
 #define SIZE_4G   ((uint64_t)   0x100000000ULL)
 #define SIZE_16G  ((uint64_t)   0x400000000ULL)
 #define SIZE_32G  ((uint64_t)   0x800000000ULL)
 #define SIZE_64G  ((uint64_t)  0x1000000000ULL)
 #define SIZE_1T   ((uint64_t) 0x10000000000ULL)
 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/utilities/globalDefinitions_xlc.hpp@aefa2e84b424 (annotated)

src/share/vm/utilities/globalDefinitions_xlc.hpp