1 #
   2 # Copyright (c) 2013, 2016, 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.  Oracle designates this
   8 # particular file as subject to the "Classpath" exception as provided
   9 # by Oracle in the LICENSE file that accompanied this code.
  10 #
  11 # This code is distributed in the hope that it will be useful, but WITHOUT
  12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 # version 2 for more details (a copy is included in the LICENSE file that
  15 # accompanied this code).
  16 #
  17 # You should have received a copy of the GNU General Public License version
  18 # 2 along with this work; if not, write to the Free Software Foundation,
  19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20 #
  21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22 # or visit www.oracle.com if you need additional information or have any
  23 # questions.
  24 #
  25 
  26 $(eval $(call IncludeCustomExtension, hotspot, lib/JvmOverrideFiles.gmk))
  27 
  28 ################################################################################
  29 # This file contains explicit overrides of CFLAGS and/or precompiled header
  30 # status for individual files on specific platforms.
  31 
  32 ifeq ($(TOOLCHAIN_TYPE), gcc)
  33   BUILD_LIBJVM_vmStructs.cpp_CXXFLAGS := -fno-var-tracking-assignments -O0
  34 endif
  35 
  36 ifeq ($(OPENJDK_TARGET_OS), linux)
  37   BUILD_LIBJVM_ostream.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64
  38 
  39   ifeq ($(OPENJDK_TARGET_CPU_ARCH), x86)
  40     BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := -DNO_PCH $(CXX_O_FLAG_NONE)
  41     BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := -DNO_PCH $(CXX_O_FLAG_NONE)
  42 
  43     ifeq ($(TOOLCHAIN_TYPE), clang)
  44       JVM_PRECOMPILED_HEADER_EXCLUDE := \
  45           sharedRuntimeTrig.cpp \
  46           sharedRuntimeTrans.cpp \
  47           #
  48     endif
  49   endif
  50 
  51   ifeq ($(OPENJDK_TARGET_CPU), x86)
  52     # Performance measurements show that by compiling GC related code, we could
  53     # significantly reduce the GC pause time on 32 bit Linux/Unix platforms by
  54     # compiling without the PIC flag (-fPIC on linux).
  55     # See 6454213 for more details.
  56     ALL_SRC := $(filter %.cpp, $(call CacheFind, $(HOTSPOT_TOPDIR)/src/share/vm))
  57     NONPIC_FILTER := $(addsuffix %, $(addprefix $(HOTSPOT_TOPDIR)/src/share/vm/, \
  58         memory oops gc))
  59     # Due to what looks like a bug in the old build implementation of this, add a
  60     # couple of more files that were accidentally matched as substrings of GC related
  61     # files.
  62     NONPIC_SRC := $(filter $(NONPIC_FILTER), $(ALL_SRC)) globals.cpp location.cpp
  63     # Declare variables for each source file that needs the pic flag like this:
  64     # BUILD_JVM_<srcfile>_CXXFLAGS := -fno-PIC
  65     # This will get implicitly picked up by SetupNativeCompilation below.
  66     $(foreach s, $(NONPIC_SRC), $(eval BUILD_LIBJVM_$(notdir $s)_CXXFLAGS := -fno-PIC))
  67   endif
  68 
  69 else ifeq ($(OPENJDK_TARGET_OS), solaris)
  70   ifneq ($(DEBUG_LEVEL), slowdebug)
  71     # Workaround for a bug in dtrace.  If ciEnv::post_compiled_method_load_event()
  72     # is inlined, the resulting dtrace object file needs a reference to this
  73     # function, whose symbol name is too long for dtrace.  So disable inlining
  74     # for this method for now. (fix this when dtrace bug 6258412 is fixed)
  75     BUILD_LIBJVM_ciEnv.cpp_CXXFLAGS := \
  76         -xinline=no%__1cFciEnvbFpost_compiled_method_load_event6MpnHnmethod__v_
  77     # dtrace cannot handle tail call optimization (6672627, 6693876)
  78     BUILD_LIBJVM_jni.cpp_CXXFLAGS := -Qoption ube -O~yz
  79     BUILD_LIBJVM_stubGenerator_$(HOTSPOT_TARGET_CPU).cpp_CXXFLAGS := -xspace
  80 
  81     ifeq ($(OPENJDK_TARGET_CPU), x86_64)
  82       # Temporary until SS10 C++ compiler is fixed
  83       BUILD_LIBJVM_generateOptoStub.cpp_CXXFLAGS := -xO2
  84       # Temporary util SS12u1 C++ compiler is fixed
  85       BUILD_LIBJVM_c1_LinearScan.cpp_CXXFLAGS := -xO2
  86     endif
  87   endif
  88 
  89   # Need extra inlining to get oop_ps_push_contents functions to perform well enough.
  90   ifeq ($(DEBUG_LEVEL),release)
  91     BUILD_LIBJVM_psPromotionManager.cpp_CXXFLAGS := -W2,-Ainline:inc=1000
  92   endif
  93 
  94   ifeq ($(DEBUG_LEVEL), fastdebug)
  95     # this hangs in iropt now (7113504)
  96     BUILD_LIBJVM_compileBroker.cpp_CXXFLAGS := -xO2
  97 
  98     # Frame size > 100k  if we allow inlining via -g0!
  99     BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS := +d
 100     BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS := +d
 101 
 102     ifeq ($(OPENJDK_TARGET_CPU_ARCH), x86)
 103       # ube explodes on x86
 104       BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS += -xO1
 105       BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS += -xO1
 106     endif
 107 
 108   endif
 109 
 110 else ifeq ($(OPENJDK_TARGET_OS), macosx)
 111   # The copied fdlibm routines in these files must not be optimized
 112   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 113   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 114   ifeq ($(TOOLCHAIN_TYPE), clang)
 115     # NOTE: The old build tested clang version to make sure this workaround
 116     # for the clang bug was still needed.
 117     BUILD_LIBJVM_loopTransform.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 118     ifneq ($(DEBUG_LEVEL), slowdebug)
 119       BUILD_LIBJVM_unsafe.cpp_CXXFLAGS := -O1
 120     endif
 121 
 122     # The following files are compiled at various optimization
 123     # levels due to optimization issues encountered at the
 124     # default level. The Clang compiler issues a compile
 125     # time error if there is an optimization level specification
 126     # skew between the PCH file and the C++ file.  Especially if the
 127     # PCH file is compiled at a higher optimization level than
 128     # the C++ file.  One solution might be to prepare extra optimization
 129     # level specific PCH files for the opt build and use them here, but
 130     # it's probably not worth the effort as long as only a few files
 131     # need this special handling.
 132     JVM_PRECOMPILED_HEADER_EXCLUDE := \
 133         sharedRuntimeTrig.cpp \
 134         sharedRuntimeTrans.cpp \
 135         loopTransform.cpp \
 136         unsafe.cpp \
 137         jvmciCompilerToVM.cpp \
 138         #
 139   endif
 140 
 141 else ifeq ($(OPENJDK_TARGET_OS), aix)
 142   BUILD_LIBJVM_synchronizer.cpp_CXXFLAGS := -qnoinline
 143   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 144   # Disable aggressive optimizations for functions in sharedRuntimeTrig.cpp
 145   # and sharedRuntimeTrans.cpp on ppc64.
 146   # -qstrict turns off the following optimizations:
 147   #   * Performing code motion and scheduling on computations such as loads
 148   #     and floating-point computations that may trigger an exception.
 149   #   * Relaxing conformance to IEEE rules.
 150   #   * Reassociating floating-point expressions.
 151   # When using '-qstrict' there still remains one problem
 152   # in javasoft.sqe.tests.api.java.lang.Math.sin5Tests when run in compile-all
 153   # mode, so don't optimize sharedRuntimeTrig.cpp at all.
 154   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 155 
 156   # Disable ELF decoder on AIX (AIX uses XCOFF).
 157   JVM_EXCLUDE_PATTERNS += elf
 158 
 159 else ifeq ($(OPENJDK_TARGET_OS), windows)
 160   JVM_PRECOMPILED_HEADER_EXCLUDE := \
 161       bytecodeInterpreter.cpp \
 162       bytecodeInterpreterWithChecks.cpp \
 163       opcodes.cpp \
 164       os_windows.cpp \
 165       os_windows_x86.cpp \
 166       osThread_windows.cpp \
 167       #
 168 endif