#

# Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

$(eval $(call IncludeCustomExtension, hotspot/lib/JvmOverrideFiles.gmk))

################################################################################

# This file contains explicit overrides of CFLAGS and/or precompiled header

# status for individual files on specific platforms.

ifeq ($(TOOLCHAIN_TYPE), gcc)

  BUILD_LIBJVM_vmStructs.cpp_CXXFLAGS := -fno-var-tracking-assignments

  BUILD_LIBJVM_jvmciCompilerToVM.cpp_CXXFLAGS := -fno-var-tracking-assignments

  BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_CXXFLAGS := -fno-var-tracking-assignments

  BUILD_LIBJVM_assembler_x86.cpp_CXXFLAGS := -Wno-maybe-uninitialized

  BUILD_LIBJVM_cardTableBarrierSetAssembler_x86.cpp_CXXFLAGS := -Wno-maybe-uninitialized

  BUILD_LIBJVM_interp_masm_x86.cpp_CXXFLAGS := -Wno-uninitialized

  ifeq ($(DEBUG_LEVEL), release)

    # Need extra inlining to collapse all marking code into the hot marking loop

    BUILD_LIBJVM_shenandoahConcurrentMark.cpp_CXXFLAGS := --param inline-unit-growth=1000

    BUILD_LIBJVM_shenandoahTraversalGC.cpp_CXXFLAGS := --param inline-unit-growth=1000

  endif

endif

LIBJVM_FDLIBM_COPY_OPT_FLAG := $(CXX_O_FLAG_NONE)

# If the FDLIBM_CFLAGS variable is non-empty we know

# that the fdlibm-fork in hotspot can get optimized

# by using -ffp-contract=off on GCC/Clang platforms.

ifneq ($(FDLIBM_CFLAGS), )

  LIBJVM_FDLIBM_COPY_OPT_FLAG := $(CXX_O_FLAG_NORM)

endif

ifeq ($(call isTargetOs, linux), true)

  BUILD_LIBJVM_ostream.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64

  BUILD_LIBJVM_logFileOutput.cpp_CXXFLAGS := -D_FILE_OFFSET_BITS=64

  BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := -DNO_PCH $(FDLIBM_CFLAGS) $(LIBJVM_FDLIBM_COPY_OPT_FLAG)

  BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := -DNO_PCH $(FDLIBM_CFLAGS) $(LIBJVM_FDLIBM_COPY_OPT_FLAG)

  ifeq ($(TOOLCHAIN_TYPE), clang)

    JVM_PRECOMPILED_HEADER_EXCLUDE := \

	sharedRuntimeTrig.cpp \

	sharedRuntimeTrans.cpp \

	#

  endif

  ifeq ($(call isTargetCpu, x86), true)

    # Performance measurements show that by compiling GC related code, we could

    # significantly reduce the GC pause time on 32 bit Linux/Unix platforms by

    # compiling without the PIC flag (-fPIC on linux).

    # See 6454213 for more details.

    ALL_SRC := $(call FindFiles, $(TOPDIR)/src/hotspot/share, *.cpp)

    NONPIC_FILTER := $(addsuffix %, $(addprefix $(TOPDIR)/src/hotspot/share/, \

        memory oops gc))

    # Due to what looks like a bug in the old build implementation of this, add a

    # couple of more files that were accidentally matched as substrings of GC related

    # files.

    NONPIC_SRC := $(filter $(NONPIC_FILTER), $(ALL_SRC)) globals.cpp location.cpp

    # Declare variables for each source file that needs the pic flag like this:

    # BUILD_JVM_<srcfile>_CXXFLAGS := -fno-PIC

    # This will get implicitly picked up by SetupNativeCompilation below.

    $(foreach s, $(NONPIC_SRC), $(eval BUILD_LIBJVM_$(notdir $s)_CXXFLAGS := -fno-PIC))

  endif

else ifeq ($(call isTargetOs, solaris), true)

  ifneq ($(DEBUG_LEVEL), slowdebug)

    # dev studio 12.6 workaround

    BUILD_LIBJVM_arguments.cpp_OPTIMIZATION := LOW

    # Workaround for a bug in dtrace.  If ciEnv::post_compiled_method_load_event()

    # is inlined, the resulting dtrace object file needs a reference to this

    # function, whose symbol name is too long for dtrace.  So disable inlining

    # for this method for now. (fix this when dtrace bug 6258412 is fixed)

    BUILD_LIBJVM_ciEnv.cpp_CXXFLAGS := \

        -xinline=no%__1cFciEnvbFpost_compiled_method_load_event6MpnHnmethod__v_

    # dtrace cannot handle tail call optimization (6672627, 6693876)

    BUILD_LIBJVM_jni.cpp_CXXFLAGS := -Qoption ube -O~yz

    BUILD_LIBJVM_stubGenerator_$(HOTSPOT_TARGET_CPU).cpp_CXXFLAGS := -xspace

    ifeq ($(call isTargetCpu, x86_64), true)

      # Temporary until SS10 C++ compiler is fixed

      BUILD_LIBJVM_generateOptoStub.cpp_CXXFLAGS := -xO2

      # Temporary util SS12u1 C++ compiler is fixed

      BUILD_LIBJVM_c1_LinearScan.cpp_CXXFLAGS := -xO2

    endif

  endif

  # Need extra inlining to get oop_ps_push_contents functions to perform well enough.

  ifeq ($(DEBUG_LEVEL),release)

    BUILD_LIBJVM_psPromotionManager.cpp_CXXFLAGS := -W2,-Ainline:inc=1000

  endif

  ifeq ($(DEBUG_LEVEL), fastdebug)

    # this hangs in iropt now (7113504)

    BUILD_LIBJVM_compileBroker.cpp_CXXFLAGS := -xO2

    # Frame size > 100k  if we allow inlining via -g0!

    BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS := +d

    BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS := +d

    ifeq ($(call isTargetCpuArch, x86), true)

      # ube explodes on x86

      BUILD_LIBJVM_bytecodeInterpreter.cpp_CXXFLAGS += -xO1

      BUILD_LIBJVM_bytecodeInterpreterWithChecks.cpp_CXXFLAGS += -xO1

    endif

  endif

  # Workaround for jvmciCompilerToVM.cpp long compilation time

  BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_OPTIMIZATION := NONE

else ifeq ($(call isTargetOs, macosx), true)

  # The copied fdlibm routines in these files must not be optimized

  BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(FDLIBM_CFLAGS) $(LIBJVM_FDLIBM_COPY_OPT_FLAG)

  BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(FDLIBM_CFLAGS) $(LIBJVM_FDLIBM_COPY_OPT_FLAG)

  ifeq ($(TOOLCHAIN_TYPE), clang)

    # NOTE: The old build tested clang version to make sure this workaround

    # for the clang bug was still needed.

    BUILD_LIBJVM_loopTransform.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)

    ifneq ($(DEBUG_LEVEL), slowdebug)

      BUILD_LIBJVM_unsafe.cpp_CXXFLAGS := -O1

    endif

    # The following files are compiled at various optimization

    # levels due to optimization issues encountered at the

    # default level. The Clang compiler issues a compile

    # time error if there is an optimization level specification

    # skew between the PCH file and the C++ file.  Especially if the

    # PCH file is compiled at a higher optimization level than

    # the C++ file.  One solution might be to prepare extra optimization

    # level specific PCH files for the opt build and use them here, but

    # it's probably not worth the effort as long as only a few files

    # need this special handling.

    JVM_PRECOMPILED_HEADER_EXCLUDE := \

        sharedRuntimeTrig.cpp \

        sharedRuntimeTrans.cpp \

        loopTransform.cpp \

        unsafe.cpp \

        jvmciCompilerToVM.cpp \

        #

  endif

else ifeq ($(call isTargetOs, aix), true)

  BUILD_LIBJVM_synchronizer.cpp_CXXFLAGS := -qnoinline

  BUILD_LIBJVM_sharedRuntimeTrans.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)

  # Disable aggressive optimizations for functions in sharedRuntimeTrig.cpp

  # and sharedRuntimeTrans.cpp on ppc64.

  # -qstrict turns off the following optimizations:

  #   * Performing code motion and scheduling on computations such as loads

  #     and floating-point computations that may trigger an exception.

  #   * Relaxing conformance to IEEE rules.

  #   * Reassociating floating-point expressions.

  # When using '-qstrict' there still remains one problem

  # in javasoft.sqe.tests.api.java.lang.Math.sin5Tests when run in compile-all

  # mode, so don't optimize sharedRuntimeTrig.cpp at all.

  BUILD_LIBJVM_sharedRuntimeTrig.cpp_CXXFLAGS := $(CXX_O_FLAG_NONE)

  ifneq ($(DEBUG_LEVEL),slowdebug)

    # Compiling jvmtiEnterTrace.cpp with full optimization needs more than 30min

    # (mostly because of '-qhot=level=1' and the more than 1300 'log_trace' calls

    # which cause a lot of template expansion).

    BUILD_LIBJVM_jvmtiEnterTrace.cpp_OPTIMIZATION := LOW

  endif

  # Disable ELF decoder on AIX (AIX uses XCOFF).

  JVM_EXCLUDE_PATTERNS += elf

else ifeq ($(call isTargetOs, windows), true)

  JVM_PRECOMPILED_HEADER_EXCLUDE := \

      bytecodeInterpreter.cpp \

      bytecodeInterpreterWithChecks.cpp \

      opcodes.cpp \

      os_windows.cpp \

      os_windows_x86.cpp \

      osThread_windows.cpp \

      jvmciCompilerToVMInit.cpp \

      #

  # Workaround for jvmciCompilerToVM.cpp long compilation time

  BUILD_LIBJVM_jvmciCompilerToVMInit.cpp_OPTIMIZATION := NONE

endif