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 -O0
  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 endif
  40 
  41 ifeq ($(TOOLCHAIN_TYPE), gcc)
  42   BUILD_LIBJVM_vm_version_aarch32_2.cpp_CXXFLAGS := -fno-stack-protector
  43 endif
  44 
  45 ifeq ($(OPENJDK_TARGET_OS), linux)
  46   BUILD_LIBJVM_ostream.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64
  47   BUILD_LIBJVM_logFileOutput.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64
  48 
  49   ifeq ($(OPENJDK_TARGET_CPU_ARCH), x86)
  50     BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := -DNO_PCH $(CXX_O_FLAG_NONE)
  51     BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := -DNO_PCH $(CXX_O_FLAG_NONE)
  52 
  53     ifeq ($(TOOLCHAIN_TYPE), clang)
  54       JVM_PRECOMPILED_HEADER_EXCLUDE := \
  55           sharedRuntimeTrig.cpp \
  56           sharedRuntimeTrans.cpp \
  57           #
  58     endif
  59   endif
  60 
  61   ifeq ($(OPENJDK_TARGET_CPU), x86)
  62     # Performance measurements show that by compiling GC related code, we could
  63     # significantly reduce the GC pause time on 32 bit Linux/Unix platforms by
  64     # compiling without the PIC flag (-fPIC on linux).
  65     # See 6454213 for more details.
  66     ALL_SRC := $(filter %.cpp, $(call CacheFind, $(TOPDIR)/src/hotspot/share))
  67     NONPIC_FILTER := $(addsuffix %, $(addprefix $(TOPDIR)/src/hotspot/share/, \
  68         memory oops gc))
  69     # Due to what looks like a bug in the old build implementation of this, add a
  70     # couple of more files that were accidentally matched as substrings of GC related
  71     # files.
  72     NONPIC_SRC := $(filter $(NONPIC_FILTER), $(ALL_SRC)) globals.cpp location.cpp
  73     # Declare variables for each source file that needs the pic flag like this:
  74     # BUILD_JVM_<srcfile>_CXXFLAGS := -fno-PIC
  75     # This will get implicitly picked up by SetupNativeCompilation below.
  76     $(foreach s, $(NONPIC_SRC), $(eval BUILD_LIBJVM_$(notdir $s)_CXXFLAGS := -fno-PIC))
  77   endif
  78 
  79 else ifeq ($(OPENJDK_TARGET_OS), solaris)
  80   ifneq ($(DEBUG_LEVEL), slowdebug)
  81     # dev studio 12.6 workaround
  82     BUILD_LIBJVM_arguments.cpp_OPTIMIZATION := LOW
  83     # Workaround for a bug in dtrace.  If ciEnv::post_compiled_method_load_event()
  84     # is inlined, the resulting dtrace object file needs a reference to this
  85     # function, whose symbol name is too long for dtrace.  So disable inlining
  86     # for this method for now. (fix this when dtrace bug 6258412 is fixed)
  87     BUILD_LIBJVM_ciEnv.cpp_CXXFLAGS := \
  88         -xinline=no%__1cFciEnvbFpost_compiled_method_load_event6MpnHnmethod__v_
  89     # dtrace cannot handle tail call optimization (6672627, 6693876)
  90     BUILD_LIBJVM_jni.cpp_CXXFLAGS := -Qoption ube -O~yz
  91     BUILD_LIBJVM_stubGenerator_$(HOTSPOT_TARGET_CPU).cpp_CXXFLAGS := -xspace
  92 
  93     ifeq ($(OPENJDK_TARGET_CPU), x86_64)
  94       # Temporary until SS10 C++ compiler is fixed
  95       BUILD_LIBJVM_generateOptoStub.cpp_CXXFLAGS := -xO2
  96       # Temporary util SS12u1 C++ compiler is fixed
  97       BUILD_LIBJVM_c1_LinearScan.cpp_CXXFLAGS := -xO2
  98     endif
  99   endif
 100 
 101   # Need extra inlining to get oop_ps_push_contents functions to perform well enough.
 102   ifeq ($(DEBUG_LEVEL),release)
 103     BUILD_LIBJVM_psPromotionManager.cpp_CXXFLAGS := -W2,-Ainline:inc=1000
 104   endif
 105 
 106   ifeq ($(DEBUG_LEVEL), fastdebug)
 107     # this hangs in iropt now (7113504)
 108     BUILD_LIBJVM_compileBroker.cpp_CXXFLAGS := -xO2
 109 
 110     # Frame size > 100k  if we allow inlining via -g0!
 111     BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS := +d
 112     BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS := +d
 113 
 114     ifeq ($(OPENJDK_TARGET_CPU_ARCH), x86)
 115       # ube explodes on x86
 116       BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS += -xO1
 117       BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS += -xO1
 118     endif
 119 
 120   endif
 121 
 122   # Workaround for jvmciCompilerToVM.cpp long compilation time
 123   BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_OPTIMIZATION := NONE
 124 
 125 else ifeq ($(OPENJDK_TARGET_OS), macosx)
 126   # The copied fdlibm routines in these files must not be optimized
 127   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 128   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 129   ifeq ($(TOOLCHAIN_TYPE), clang)
 130     # NOTE: The old build tested clang version to make sure this workaround
 131     # for the clang bug was still needed.
 132     BUILD_LIBJVM_loopTransform.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 133     ifneq ($(DEBUG_LEVEL), slowdebug)
 134       BUILD_LIBJVM_unsafe.cpp_CXXFLAGS := -O1
 135     endif
 136 
 137     # The following files are compiled at various optimization
 138     # levels due to optimization issues encountered at the
 139     # default level. The Clang compiler issues a compile
 140     # time error if there is an optimization level specification
 141     # skew between the PCH file and the C++ file.  Especially if the
 142     # PCH file is compiled at a higher optimization level than
 143     # the C++ file.  One solution might be to prepare extra optimization
 144     # level specific PCH files for the opt build and use them here, but
 145     # it's probably not worth the effort as long as only a few files
 146     # need this special handling.
 147     JVM_PRECOMPILED_HEADER_EXCLUDE := \
 148         sharedRuntimeTrig.cpp \
 149         sharedRuntimeTrans.cpp \
 150         loopTransform.cpp \
 151         unsafe.cpp \
 152         jvmciCompilerToVM.cpp \
 153         #
 154   endif
 155 
 156 else ifeq ($(OPENJDK_TARGET_OS), aix)
 157   BUILD_LIBJVM_synchronizer.cpp_CXXFLAGS := -qnoinline
 158   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 159   # Disable aggressive optimizations for functions in sharedRuntimeTrig.cpp
 160   # and sharedRuntimeTrans.cpp on ppc64.
 161   # -qstrict turns off the following optimizations:
 162   #   * Performing code motion and scheduling on computations such as loads
 163   #     and floating-point computations that may trigger an exception.
 164   #   * Relaxing conformance to IEEE rules.
 165   #   * Reassociating floating-point expressions.
 166   # When using '-qstrict' there still remains one problem
 167   # in javasoft.sqe.tests.api.java.lang.Math.sin5Tests when run in compile-all
 168   # mode, so don't optimize sharedRuntimeTrig.cpp at all.
 169   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 170 
 171   ifneq ($(DEBUG_LEVEL),slowdebug)
 172     # Compiling jvmtiEnterTrace.cpp with full optimization needs more than 30min
 173     # (mostly because of '-qhot=level=1' and the more than 1300 'log_trace' calls
 174     # which cause a lot of template expansion).
 175     BUILD_LIBJVM_jvmtiEnterTrace.cpp_OPTIMIZATION := LOW
 176   endif
 177 
 178   # Disable ELF decoder on AIX (AIX uses XCOFF).
 179   JVM_EXCLUDE_PATTERNS += elf
 180 
 181 else ifeq ($(OPENJDK_TARGET_OS), windows)
 182   JVM_PRECOMPILED_HEADER_EXCLUDE := \
 183       bytecodeInterpreter.cpp \
 184       bytecodeInterpreterWithChecks.cpp \
 185       opcodes.cpp \
 186       os_windows.cpp \
 187       os_windows_x86.cpp \
 188       osThread_windows.cpp \
 189       jvmciCompilerToVMInit.cpp \
 190       #
 191 
 192   # Workaround for jvmciCompilerToVM.cpp long compilation time
 193   BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_OPTIMIZATION := NONE
 194 
 195 endif