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#
# Copyright (c) 2013, 2023, 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
ifeq ($(DEBUG_LEVEL), release)
# Need extra inlining to collapse shared marking code into the hot marking loop
BUILD_LIBJVM_shenandoahMark.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 := $(CXX_O_FLAG_NORM)
# Don't optimize fdlibm-fork for Zero on Linux sparc
# See JDK-XXXX
ifeq ($(call check-jvm-feature, zero), true)
ifeq ($(OPENJDK_TARGET_OS), linux)
ifeq ($(OPENJDK_TARGET_CPU_ARCH), sparc)
LIBJVM_FDLIBM_COPY_OPT_FLAG := $(CXX_O_FLAG_NONE)
endif
endif
endif
endif
ifeq ($(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 \
$(OPT_SPEED_SRC) \
#
endif
ifeq ($(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, 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)
# 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 \
jvmciCompilerToVM.cpp \
$(OPT_SPEED_SRC) \
#
endif
else ifeq ($(call isTargetOs, aix), true)
ifeq ($(TOOLCHAIN_TYPE), clang)
BUILD_LIBJVM_synchronizer.cpp_CXXFLAGS := -fno-inline
else
BUILD_LIBJVM_synchronizer.cpp_CXXFLAGS := -qnoinline
endif
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
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