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_interp_masm_x86.cpp_CXXFLAGS := -Wno-uninitialized
  38 endif
  39 
  40 ifeq ($(OPENJDK_TARGET_OS), linux)
  41   BUILD_LIBJVM_ostream.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64
  42   BUILD_LIBJVM_logFileOutput.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64
  43 
  44   ifeq ($(OPENJDK_TARGET_CPU_ARCH), x86)
  45     BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := -DNO_PCH $(CXX_O_FLAG_NONE)
  46     BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := -DNO_PCH $(CXX_O_FLAG_NONE)
  47 
  48     ifeq ($(TOOLCHAIN_TYPE), clang)
  49       JVM_PRECOMPILED_HEADER_EXCLUDE := \
  50           sharedRuntimeTrig.cpp \
  51           sharedRuntimeTrans.cpp \
  52           #
  53     endif
  54   endif
  55 
  56   ifeq ($(OPENJDK_TARGET_CPU), x86)
  57     # Performance measurements show that by compiling GC related code, we could
  58     # significantly reduce the GC pause time on 32 bit Linux/Unix platforms by
  59     # compiling without the PIC flag (-fPIC on linux).
  60     # See 6454213 for more details.
  61     ALL_SRC := $(filter %.cpp, $(call CacheFind, $(TOPDIR)/src/hotspot/share))
  62     NONPIC_FILTER := $(addsuffix %, $(addprefix $(TOPDIR)/src/hotspot/share/, \
  63         memory oops gc))
  64     # Due to what looks like a bug in the old build implementation of this, add a
  65     # couple of more files that were accidentally matched as substrings of GC related
  66     # files.
  67     NONPIC_SRC := $(filter $(NONPIC_FILTER), $(ALL_SRC)) globals.cpp location.cpp
  68     # Declare variables for each source file that needs the pic flag like this:
  69     # BUILD_JVM_<srcfile>_CXXFLAGS := -fno-PIC
  70     # This will get implicitly picked up by SetupNativeCompilation below.
  71     $(foreach s, $(NONPIC_SRC), $(eval BUILD_LIBJVM_$(notdir $s)_CXXFLAGS := -fno-PIC))
  72   endif
  73 
  74 else ifeq ($(OPENJDK_TARGET_OS), solaris)
  75   ifneq ($(DEBUG_LEVEL), slowdebug)
  76     # Workaround for a bug in dtrace.  If ciEnv::post_compiled_method_load_event()
  77     # is inlined, the resulting dtrace object file needs a reference to this
  78     # function, whose symbol name is too long for dtrace.  So disable inlining
  79     # for this method for now. (fix this when dtrace bug 6258412 is fixed)
  80     BUILD_LIBJVM_ciEnv.cpp_CXXFLAGS := \
  81         -xinline=no%__1cFciEnvbFpost_compiled_method_load_event6MpnHnmethod__v_
  82     # dtrace cannot handle tail call optimization (6672627, 6693876)
  83     BUILD_LIBJVM_jni.cpp_CXXFLAGS := -Qoption ube -O~yz
  84     BUILD_LIBJVM_stubGenerator_$(HOTSPOT_TARGET_CPU).cpp_CXXFLAGS := -xspace
  85 
  86     ifeq ($(OPENJDK_TARGET_CPU), x86_64)
  87       # Temporary until SS10 C++ compiler is fixed
  88       BUILD_LIBJVM_generateOptoStub.cpp_CXXFLAGS := -xO2
  89       # Temporary util SS12u1 C++ compiler is fixed
  90       BUILD_LIBJVM_c1_LinearScan.cpp_CXXFLAGS := -xO2
  91     endif
  92   endif
  93 
  94   # Need extra inlining to get oop_ps_push_contents functions to perform well enough.
  95   ifeq ($(DEBUG_LEVEL),release)
  96     BUILD_LIBJVM_psPromotionManager.cpp_CXXFLAGS := -W2,-Ainline:inc=1000
  97   endif
  98 
  99   ifeq ($(DEBUG_LEVEL), fastdebug)
 100     # this hangs in iropt now (7113504)
 101     BUILD_LIBJVM_compileBroker.cpp_CXXFLAGS := -xO2
 102 
 103     # Frame size > 100k  if we allow inlining via -g0!
 104     BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS := +d
 105     BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS := +d
 106 
 107     ifeq ($(OPENJDK_TARGET_CPU_ARCH), x86)
 108       # ube explodes on x86
 109       BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS += -xO1
 110       BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS += -xO1
 111     endif
 112 
 113   endif
 114 
 115   # Workaround for jvmciCompilerToVM.cpp long compilation time
 116   BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_OPTIMIZATION := NONE
 117 
 118 else ifeq ($(OPENJDK_TARGET_OS), macosx)
 119   # The copied fdlibm routines in these files must not be optimized
 120   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 121   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 122   ifeq ($(TOOLCHAIN_TYPE), clang)
 123     # NOTE: The old build tested clang version to make sure this workaround
 124     # for the clang bug was still needed.
 125     BUILD_LIBJVM_loopTransform.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 126     ifneq ($(DEBUG_LEVEL), slowdebug)
 127       BUILD_LIBJVM_unsafe.cpp_CXXFLAGS := -O1
 128     endif
 129 
 130     # The following files are compiled at various optimization
 131     # levels due to optimization issues encountered at the
 132     # default level. The Clang compiler issues a compile
 133     # time error if there is an optimization level specification
 134     # skew between the PCH file and the C++ file.  Especially if the
 135     # PCH file is compiled at a higher optimization level than
 136     # the C++ file.  One solution might be to prepare extra optimization
 137     # level specific PCH files for the opt build and use them here, but
 138     # it's probably not worth the effort as long as only a few files
 139     # need this special handling.
 140     JVM_PRECOMPILED_HEADER_EXCLUDE := \
 141         sharedRuntimeTrig.cpp \
 142         sharedRuntimeTrans.cpp \
 143         loopTransform.cpp \
 144         unsafe.cpp \
 145         jvmciCompilerToVM.cpp \
 146         #
 147   endif
 148 
 149 else ifeq ($(OPENJDK_TARGET_OS), aix)
 150   BUILD_LIBJVM_synchronizer.cpp_CXXFLAGS := -qnoinline
 151   BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 152   # Disable aggressive optimizations for functions in sharedRuntimeTrig.cpp
 153   # and sharedRuntimeTrans.cpp on ppc64.
 154   # -qstrict turns off the following optimizations:
 155   #   * Performing code motion and scheduling on computations such as loads
 156   #     and floating-point computations that may trigger an exception.
 157   #   * Relaxing conformance to IEEE rules.
 158   #   * Reassociating floating-point expressions.
 159   # When using '-qstrict' there still remains one problem
 160   # in javasoft.sqe.tests.api.java.lang.Math.sin5Tests when run in compile-all
 161   # mode, so don't optimize sharedRuntimeTrig.cpp at all.
 162   BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)
 163 
 164   ifneq ($(DEBUG_LEVEL),slowdebug)
 165     # Compiling jvmtiEnterTrace.cpp with full optimization needs more than 30min
 166     # (mostly because of '-qhot=level=1' and the more than 1300 'log_trace' calls
 167     # which cause a lot of template expansion).
 168     BUILD_LIBJVM_jvmtiEnterTrace.cpp_OPTIMIZATION := LOW
 169   endif
 170 
 171   # Disable ELF decoder on AIX (AIX uses XCOFF).
 172   JVM_EXCLUDE_PATTERNS += elf
 173 
 174 else ifeq ($(OPENJDK_TARGET_OS), windows)
 175   JVM_PRECOMPILED_HEADER_EXCLUDE := \
 176       bytecodeInterpreter.cpp \
 177       bytecodeInterpreterWithChecks.cpp \
 178       opcodes.cpp \
 179       os_windows.cpp \
 180       os_windows_x86.cpp \
 181       osThread_windows.cpp \
 182       jvmciCompilerToVMInit.cpp \
 183       #
 184 
 185   # Workaround for jvmciCompilerToVM.cpp long compilation time
 186   BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_OPTIMIZATION := NONE
 187 
 188 endif