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   BUILD_LIBJVM_jvmciCompilerToVM.cpp_CXXFLAGS := -fno-var-tracking-assignments
  35   BUILD_LIBJVM_assembler_x86.cpp_CXXFLAGS := -Wno-maybe-uninitialized
  36   BUILD_LIBJVM_interp_masm_x86.cpp_CXXFLAGS := -Wno-uninitialized
  37 endif
  38 
  39 ifeq ($(OPENJDK_TARGET_OS), linux)
  40   BUILD_LIBJVM_ostream.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64
  41   BUILD_LIBJVM_logFileOutput.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64
  42 
  43   ifeq ($(OPENJDK_TARGET_CPU_ARCH), x86)
  44     BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := -DNO_PCH $(CXX_O_FLAG_NONE)
  45     BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := -DNO_PCH $(CXX_O_FLAG_NONE)
  46 
  47     ifeq ($(TOOLCHAIN_TYPE), clang)
  48       JVM_PRECOMPILED_HEADER_EXCLUDE := \
  49           sharedRuntimeTrig.cpp \
  50           sharedRuntimeTrans.cpp \
  51           #
  52     endif
  53   endif
  54 
  55   ifeq ($(OPENJDK_TARGET_CPU), x86)
  56     # Performance measurements show that by compiling GC related code, we could
  57     # significantly reduce the GC pause time on 32 bit Linux/Unix platforms by
  58     # compiling without the PIC flag (-fPIC on linux).
  59     # See 6454213 for more details.
  60     ALL_SRC := $(filter %.cpp, $(call CacheFind, $(TOPDIR)/src/hotspot/share))
  61     NONPIC_FILTER := $(addsuffix %, $(addprefix $(TOPDIR)/src/hotspot/share/, \
  62         memory oops gc))
  63     # Due to what looks like a bug in the old build implementation of this, add a
  64     # couple of more files that were accidentally matched as substrings of GC related
  65     # files.
  66     NONPIC_SRC := $(filter $(NONPIC_FILTER), $(ALL_SRC)) globals.cpp location.cpp
  67     # Declare variables for each source file that needs the pic flag like this:
  68     # BUILD_JVM_<srcfile>_CXXFLAGS := -fno-PIC
  69     # This will get implicitly picked up by SetupNativeCompilation below.
  70     $(foreach s, $(NONPIC_SRC), $(eval BUILD_LIBJVM_$(notdir $s)_CXXFLAGS := -fno-PIC))
  71   endif
  72 
  73 else ifeq ($(OPENJDK_TARGET_OS), solaris)
  74   ifneq ($(DEBUG_LEVEL), slowdebug)
  75     # Workaround for a bug in dtrace.  If ciEnv::post_compiled_method_load_event()
  76     # is inlined, the resulting dtrace object file needs a reference to this
  77     # function, whose symbol name is too long for dtrace.  So disable inlining
  78     # for this method for now. (fix this when dtrace bug 6258412 is fixed)
  79     BUILD_LIBJVM_ciEnv.cpp_CXXFLAGS := \
  80         -xinline=no%__1cFciEnvbFpost_compiled_method_load_event6MpnHnmethod__v_
  81     # dtrace cannot handle tail call optimization (6672627, 6693876)
  82     BUILD_LIBJVM_jni.cpp_CXXFLAGS := -Qoption ube -O~yz
  83     BUILD_LIBJVM_stubGenerator_$(HOTSPOT_TARGET_CPU).cpp_CXXFLAGS := -xspace
  84 
  85     ifeq ($(OPENJDK_TARGET_CPU), x86_64)
  86       # Temporary until SS10 C++ compiler is fixed
  87       BUILD_LIBJVM_generateOptoStub.cpp_CXXFLAGS := -xO2
  88       # Temporary util SS12u1 C++ compiler is fixed
  89       BUILD_LIBJVM_c1_LinearScan.cpp_CXXFLAGS := -xO2
  90     endif
  91   endif
  92 
  93   # Need extra inlining to get oop_ps_push_contents functions to perform well enough.
  94   ifeq ($(DEBUG_LEVEL),release)
  95     BUILD_LIBJVM_psPromotionManager.cpp_CXXFLAGS := -W2,-Ainline:inc=1000
  96   endif
  97 
  98   ifeq ($(DEBUG_LEVEL), fastdebug)
  99     # this hangs in iropt now (7113504)
 100     BUILD_LIBJVM_compileBroker.cpp_CXXFLAGS := -xO2
 101 
 102     # Frame size > 100k  if we allow inlining via -g0!
 103     BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS := +d
 104     BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS := +d
 105 
 106     ifeq ($(OPENJDK_TARGET_CPU_ARCH), x86)
 107       # ube explodes on x86
 108       BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS += -xO1
 109       BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS += -xO1
 110     endif
 111 
 112   endif
 113 
 114 else ifeq ($(OPENJDK_TARGET_OS), macosx)
 115   # The copied fdlibm routines in these files must not be optimized
 116   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 117   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 118   ifeq ($(TOOLCHAIN_TYPE), clang)
 119     # NOTE: The old build tested clang version to make sure this workaround
 120     # for the clang bug was still needed.
 121     BUILD_LIBJVM_loopTransform.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 122     ifneq ($(DEBUG_LEVEL), slowdebug)
 123       BUILD_LIBJVM_unsafe.cpp_CXXFLAGS := -O1
 124     endif
 125 
 126     # The following files are compiled at various optimization
 127     # levels due to optimization issues encountered at the
 128     # default level. The Clang compiler issues a compile
 129     # time error if there is an optimization level specification
 130     # skew between the PCH file and the C++ file.  Especially if the
 131     # PCH file is compiled at a higher optimization level than
 132     # the C++ file.  One solution might be to prepare extra optimization
 133     # level specific PCH files for the opt build and use them here, but
 134     # it's probably not worth the effort as long as only a few files
 135     # need this special handling.
 136     JVM_PRECOMPILED_HEADER_EXCLUDE := \
 137         sharedRuntimeTrig.cpp \
 138         sharedRuntimeTrans.cpp \
 139         loopTransform.cpp \
 140         unsafe.cpp \
 141         jvmciCompilerToVM.cpp \
 142         #
 143   endif
 144 
 145 else ifeq ($(OPENJDK_TARGET_OS), aix)
 146   BUILD_LIBJVM_synchronizer.cpp_CXXFLAGS := -qnoinline
 147   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 148   # Disable aggressive optimizations for functions in sharedRuntimeTrig.cpp
 149   # and sharedRuntimeTrans.cpp on ppc64.
 150   # -qstrict turns off the following optimizations:
 151   #   * Performing code motion and scheduling on computations such as loads
 152   #     and floating-point computations that may trigger an exception.
 153   #   * Relaxing conformance to IEEE rules.
 154   #   * Reassociating floating-point expressions.
 155   # When using '-qstrict' there still remains one problem
 156   # in javasoft.sqe.tests.api.java.lang.Math.sin5Tests when run in compile-all
 157   # mode, so don't optimize sharedRuntimeTrig.cpp at all.
 158   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 159 
 160   ifneq ($(DEBUG_LEVEL),slowdebug)
 161     # Compiling jvmtiEnterTrace.cpp with full optimization needs more than 30min
 162     # (mostly because of '-qhot=level=1' and the more than 1300 'log_trace' calls
 163     # which cause a lot of template expansion).
 164     BUILD_LIBJVM_jvmtiEnterTrace.cpp_OPTIMIZATION := LOW
 165   endif
 166 
 167   # Disable ELF decoder on AIX (AIX uses XCOFF).
 168   JVM_EXCLUDE_PATTERNS += elf
 169 
 170 else ifeq ($(OPENJDK_TARGET_OS), windows)
 171   JVM_PRECOMPILED_HEADER_EXCLUDE := \
 172       bytecodeInterpreter.cpp \
 173       bytecodeInterpreterWithChecks.cpp \
 174       opcodes.cpp \
 175       os_windows.cpp \
 176       os_windows_x86.cpp \
 177       osThread_windows.cpp \
 178       #
 179 endif