#

# Copyright (c) 2004, 2015, Oracle and/or its affiliates. All rights reserved.

# Copyright 2012, 2015 SAP AG. 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.

#

# 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.

#  

#

# Produce 64 bits object files.

CFLAGS += -q64

# Balanced tuning for recent versions of the POWER architecture (if supported by xlc).

QTUNE=$(if $(CXX_SUPPORTS_BALANCED_TUNING),balanced,pwr5)

# Try to speed up the interpreter: use ppc64 instructions and inline 

# glue code for external functions.

OPT_CFLAGS += -qarch=ppc64 -qtune=$(QTUNE) -qinlglue

# We need variable length arrays

CFLAGS += -qlanglvl=c99vla

# Just to check for unwanted macro redefinitions

CFLAGS += -qlanglvl=noredefmac

# Suppress those "implicit private" warnings xlc gives.

#  - The omitted keyword "private" is assumed for base class "...".

CFLAGS += -qsuppress=1540-0198

# Suppress the following numerous warning:

#  - 1540-1090 (I) The destructor of "..." might not be called.

#  - 1500-010: (W) WARNING in ...: Infinite loop.  Program may not stop.

#    There are several infinite loops in the vm, suppress.

#  - 1540-1639 (I) The behavior of long type bit fields has changed ...

#                  ... long type bit fields now default to long, not int.

CFLAGS += -qsuppress=1540-1090 -qsuppress=1500-010 -qsuppress=1540-1639

# Suppress 

#  - 540-1088 (W) The exception specification is being ignored.

# caused by throw() in declaration of new() in nmethod.hpp.

CFLAGS += -qsuppress=1540-1088

# Turn off floating-point optimizations that may alter program semantics

OPT_CFLAGS += -qstrict

# 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.

OPT_CFLAGS/sharedRuntimeTrig.o = $(OPT_CFLAGS/NOOPT)

OPT_CFLAGS/sharedRuntimeTrans.o = $(OPT_CFLAGS/NOOPT)

# Xlc 10.1 parameters for aggressive optimization:

# - qhot=level=1: Most aggressive loop optimizations.

# - qignerrno: Assume errno is not modified by system calls.

# - qinline: Inline method calls. No suboptions for c++ compiles.

# - qxflag=ASMMIDCOALFIX: Activate fix for -O3 problem in interpreter loop.

# - qxflag=asmfastsync: Activate fix for performance problem with inline assembler with memory clobber.

QV10_OPT=$(if $(CXX_IS_V10),-qxflag=ASMMIDCOALFIX -qxflag=asmfastsync)

QV10_OPT_AGGRESSIVE=$(if $(CXX_IS_V10),-qhot=level=1 -qignerrno -qinline)

QV10_OPT_CONSERVATIVE=$(if $(CXX_IS_V10),-qhot=level=1 -qignerrno -qinline)

# Disallow inlining for synchronizer.cpp, but perform O3 optimizations.

OPT_CFLAGS/synchronizer.o = $(OPT_CFLAGS) -qnoinline

# Set all the xlC V10.1 options here.

OPT_CFLAGS += $(QV10_OPT) $(QV10_OPT_AGGRESSIVE)

export OBJECT_MODE=64

# Also build launcher as 64 bit executable.

LAUNCHERFLAGS += -q64