1 #
   2 # Copyright (c) 2013, 2018, 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
  34   BUILD_LIBJVM_jvmciCompilerToVM.cpp_CXXFLAGS := -fno-var-tracking-assignments
  35   BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_CXXFLAGS := -fno-var-tracking-assignments
  36   BUILD_LIBJVM_assembler_x86.cpp_CXXFLAGS := -Wno-maybe-uninitialized
  37   BUILD_LIBJVM_cardTableBarrierSetAssembler_x86.cpp_CXXFLAGS := -Wno-maybe-uninitialized
  38   BUILD_LIBJVM_interp_masm_x86.cpp_CXXFLAGS := -Wno-uninitialized
  39   ifeq ($(DEBUG_LEVEL), release)
  40     # Need extra inlining to collapse all marking code into the hot marking loop
  41     BUILD_LIBJVM_shenandoahConcurrentMark.cpp_CXXFLAGS := --param inline-unit-growth=1000
  42     BUILD_LIBJVM_shenandoahTraversalGC.cpp_CXXFLAGS := --param inline-unit-growth=1000
  43   endif
  44 endif
  45 
  46 LIBJVM_FDLIBM_COPY_OPT_FLAG := $(CXX_O_FLAG_NONE)
  47 # If the FDLIBM_CFLAGS variable is non-empty we know
  48 # that the fdlibm-fork in hotspot can get optimized
  49 # by using -ffp-contract=off on GCC/Clang platforms.
  50 ifneq ($(FDLIBM_CFLAGS), )
  51   LIBJVM_FDLIBM_COPY_OPT_FLAG := $(CXX_O_FLAG_NORM)
  52 endif
  53 
  54 ifeq ($(OPENJDK_TARGET_OS), linux)
  55   BUILD_LIBJVM_ostream.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64
  56   BUILD_LIBJVM_logFileOutput.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64
  57 
  58   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := -DNO_PCH $(FDLIBM_CFLAGS) $(LIBJVM_FDLIBM_COPY_OPT_FLAG)
  59   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := -DNO_PCH $(FDLIBM_CFLAGS) $(LIBJVM_FDLIBM_COPY_OPT_FLAG)
  60 
  61   ifeq ($(TOOLCHAIN_TYPE), clang)
  62     JVM_PRECOMPILED_HEADER_EXCLUDE := \
  63         sharedRuntimeTrig.cpp \
  64         sharedRuntimeTrans.cpp \
  65         #
  66   endif
  67 
  68   ifeq ($(OPENJDK_TARGET_CPU), x86)
  69     # Performance measurements show that by compiling GC related code, we could
  70     # significantly reduce the GC pause time on 32 bit Linux/Unix platforms by
  71     # compiling without the PIC flag (-fPIC on linux).
  72     # See 6454213 for more details.
  73     ALL_SRC := $(filter %.cpp, $(call CacheFind, $(TOPDIR)/src/hotspot/share))
  74     NONPIC_FILTER := $(addsuffix %, $(addprefix $(TOPDIR)/src/hotspot/share/, \
  75         memory oops gc))
  76     # Due to what looks like a bug in the old build implementation of this, add a
  77     # couple of more files that were accidentally matched as substrings of GC related
  78     # files.
  79     NONPIC_SRC := $(filter $(NONPIC_FILTER), $(ALL_SRC)) globals.cpp location.cpp
  80     # Declare variables for each source file that needs the pic flag like this:
  81     # BUILD_JVM_<srcfile>_CXXFLAGS := -fno-PIC
  82     # This will get implicitly picked up by SetupNativeCompilation below.
  83     $(foreach s, $(NONPIC_SRC), $(eval BUILD_LIBJVM_$(notdir $s)_CXXFLAGS := -fno-PIC))
  84   endif
  85 
  86 else ifeq ($(OPENJDK_TARGET_OS), solaris)
  87   ifneq ($(DEBUG_LEVEL), slowdebug)
  88     # dev studio 12.6 workaround
  89     BUILD_LIBJVM_arguments.cpp_OPTIMIZATION := LOW
  90     # Workaround for a bug in dtrace.  If ciEnv::post_compiled_method_load_event()
  91     # is inlined, the resulting dtrace object file needs a reference to this
  92     # function, whose symbol name is too long for dtrace.  So disable inlining
  93     # for this method for now. (fix this when dtrace bug 6258412 is fixed)
  94     BUILD_LIBJVM_ciEnv.cpp_CXXFLAGS := \
  95         -xinline=no%__1cFciEnvbFpost_compiled_method_load_event6MpnHnmethod__v_
  96     # dtrace cannot handle tail call optimization (6672627, 6693876)
  97     BUILD_LIBJVM_jni.cpp_CXXFLAGS := -Qoption ube -O~yz
  98     BUILD_LIBJVM_stubGenerator_$(HOTSPOT_TARGET_CPU).cpp_CXXFLAGS := -xspace
  99 
 100     ifeq ($(OPENJDK_TARGET_CPU), x86_64)
 101       # Temporary until SS10 C++ compiler is fixed
 102       BUILD_LIBJVM_generateOptoStub.cpp_CXXFLAGS := -xO2
 103       # Temporary util SS12u1 C++ compiler is fixed
 104       BUILD_LIBJVM_c1_LinearScan.cpp_CXXFLAGS := -xO2
 105     endif
 106   endif
 107 
 108   # Need extra inlining to get oop_ps_push_contents functions to perform well enough.
 109   ifeq ($(DEBUG_LEVEL),release)
 110     BUILD_LIBJVM_psPromotionManager.cpp_CXXFLAGS := -W2,-Ainline:inc=1000
 111   endif
 112 
 113   ifeq ($(DEBUG_LEVEL), fastdebug)
 114     # this hangs in iropt now (7113504)
 115     BUILD_LIBJVM_compileBroker.cpp_CXXFLAGS := -xO2
 116 
 117     # Frame size > 100k  if we allow inlining via -g0!
 118     BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS := +d
 119     BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS := +d
 120 
 121     ifeq ($(OPENJDK_TARGET_CPU_ARCH), x86)
 122       # ube explodes on x86
 123       BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS += -xO1
 124       BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS += -xO1
 125     endif
 126 
 127   endif
 128 
 129   # Workaround for jvmciCompilerToVM.cpp long compilation time
 130   BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_OPTIMIZATION := NONE
 131 
 132 else ifeq ($(OPENJDK_TARGET_OS), macosx)
 133   # The copied fdlibm routines in these files must not be optimized
 134   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(FDLIBM_CFLAGS) $(LIBJVM_FDLIBM_COPY_OPT_FLAG)
 135   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(FDLIBM_CFLAGS) $(LIBJVM_FDLIBM_COPY_OPT_FLAG)
 136   ifeq ($(TOOLCHAIN_TYPE), clang)
 137     # NOTE: The old build tested clang version to make sure this workaround
 138     # for the clang bug was still needed.
 139     BUILD_LIBJVM_loopTransform.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 140     ifneq ($(DEBUG_LEVEL), slowdebug)
 141       BUILD_LIBJVM_unsafe.cpp_CXXFLAGS := -O1
 142     endif
 143 
 144     # The following files are compiled at various optimization
 145     # levels due to optimization issues encountered at the
 146     # default level. The Clang compiler issues a compile
 147     # time error if there is an optimization level specification
 148     # skew between the PCH file and the C++ file.  Especially if the
 149     # PCH file is compiled at a higher optimization level than
 150     # the C++ file.  One solution might be to prepare extra optimization
 151     # level specific PCH files for the opt build and use them here, but
 152     # it's probably not worth the effort as long as only a few files
 153     # need this special handling.
 154     JVM_PRECOMPILED_HEADER_EXCLUDE := \
 155         sharedRuntimeTrig.cpp \
 156         sharedRuntimeTrans.cpp \
 157         loopTransform.cpp \
 158         unsafe.cpp \
 159         jvmciCompilerToVM.cpp \
 160         #
 161   endif
 162 
 163 else ifeq ($(OPENJDK_TARGET_OS), aix)
 164   BUILD_LIBJVM_synchronizer.cpp_CXXFLAGS := -qnoinline
 165   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 166   # Disable aggressive optimizations for functions in sharedRuntimeTrig.cpp
 167   # and sharedRuntimeTrans.cpp on ppc64.
 168   # -qstrict turns off the following optimizations:
 169   #   * Performing code motion and scheduling on computations such as loads
 170   #     and floating-point computations that may trigger an exception.
 171   #   * Relaxing conformance to IEEE rules.
 172   #   * Reassociating floating-point expressions.
 173   # When using '-qstrict' there still remains one problem
 174   # in javasoft.sqe.tests.api.java.lang.Math.sin5Tests when run in compile-all
 175   # mode, so don't optimize sharedRuntimeTrig.cpp at all.
 176   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 177 
 178   ifneq ($(DEBUG_LEVEL),slowdebug)
 179     # Compiling jvmtiEnterTrace.cpp with full optimization needs more than 30min
 180     # (mostly because of '-qhot=level=1' and the more than 1300 'log_trace' calls
 181     # which cause a lot of template expansion).
 182     BUILD_LIBJVM_jvmtiEnterTrace.cpp_OPTIMIZATION := LOW
 183   endif
 184 
 185   # Disable ELF decoder on AIX (AIX uses XCOFF).
 186   JVM_EXCLUDE_PATTERNS += elf
 187 
 188 else ifeq ($(OPENJDK_TARGET_OS), windows)
 189   JVM_PRECOMPILED_HEADER_EXCLUDE := \
 190       bytecodeInterpreter.cpp \
 191       bytecodeInterpreterWithChecks.cpp \
 192       opcodes.cpp \
 193       os_windows.cpp \
 194       os_windows_x86.cpp \
 195       osThread_windows.cpp \
 196       jvmciCompilerToVMInit.cpp \
 197       #
 198 
 199   # Workaround for jvmciCompilerToVM.cpp long compilation time
 200   BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_OPTIMIZATION := NONE
 201 
 202 endif
--- EOF ---