#+
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# Copyright (c) 2004, 2015, Oracle and/or its affiliates. All rights reserved.+
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# Copyright (c) 2012, 2015 SAP SE. All rights reserved.+
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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.+
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#+
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# This code is free software; you can redistribute it and/or modify it+
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# under the terms of the GNU General Public License version 2 only, as+
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# published by the Free Software Foundation.+
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#+
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# This code is distributed in the hope that it will be useful, but WITHOUT+
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or+
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# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License+
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# version 2 for more details (a copy is included in the LICENSE file that+
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# accompanied this code).+
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#+
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# You should have received a copy of the GNU General Public License version+
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# 2 along with this work; if not, write to the Free Software Foundation,+
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.+
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#+
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA+
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# or visit www.oracle.com if you need additional information or have any+
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# questions.+
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#  +
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#+
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+
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# Produce 64 bits object files.+
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CFLAGS += -q64+
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+
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# Balanced tuning for recent versions of the POWER architecture (if supported by xlc).+
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QTUNE=$(if $(CXX_SUPPORTS_BALANCED_TUNING),balanced,pwr5)+
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+
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# Try to speed up the interpreter: use ppc64 instructions and inline +
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# glue code for external functions.+
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OPT_CFLAGS += -qarch=ppc64 -qtune=$(QTUNE) -qinlglue+
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+
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# We need variable length arrays+
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CFLAGS += -qlanglvl=c99vla+
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# Just to check for unwanted macro redefinitions+
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CFLAGS += -qlanglvl=noredefmac+
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+
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# Suppress those "implicit private" warnings xlc gives.+
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#  - The omitted keyword "private" is assumed for base class "...".+
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CFLAGS += -qsuppress=1540-0198+
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+
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# Suppress the following numerous warning:+
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#  - 1540-1090 (I) The destructor of "..." might not be called.+
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#  - 1500-010: (W) WARNING in ...: Infinite loop.  Program may not stop.+
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#    There are several infinite loops in the vm, suppress.+
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#  - 1540-1639 (I) The behavior of long type bit fields has changed ...+
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#                  ... long type bit fields now default to long, not int.+
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CFLAGS += -qsuppress=1540-1090 -qsuppress=1500-010 -qsuppress=1540-1639+
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+
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# Suppress +
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#  - 540-1088 (W) The exception specification is being ignored.+
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# caused by throw() in declaration of new() in nmethod.hpp.+
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CFLAGS += -qsuppress=1540-1088+
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+
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# Turn off floating-point optimizations that may alter program semantics+
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OPT_CFLAGS += -qstrict+
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+
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# Disable aggressive optimizations for functions in sharedRuntimeTrig.cpp +
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# and sharedRuntimeTrans.cpp on ppc64. +
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# -qstrict turns off the following optimizations:+
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#   * Performing code motion and scheduling on computations such as loads+
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#     and floating-point computations that may trigger an exception.+
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#   * Relaxing conformance to IEEE rules.+
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#   * Reassociating floating-point expressions.+
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# When using '-qstrict' there still remains one problem+
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# in javasoft.sqe.tests.api.java.lang.Math.sin5Tests when run in compile-all+
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# mode, so don't optimize sharedRuntimeTrig.cpp at all.+
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OPT_CFLAGS/sharedRuntimeTrig.o = $(OPT_CFLAGS/NOOPT)+
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OPT_CFLAGS/sharedRuntimeTrans.o = $(OPT_CFLAGS/NOOPT)+
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+
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# Xlc 10.1 parameters for aggressive optimization:+
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# - qhot=level=1: Most aggressive loop optimizations.+
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# - qignerrno: Assume errno is not modified by system calls.+
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# - qinline: Inline method calls. No suboptions for c++ compiles.+
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# - qxflag=ASMMIDCOALFIX: Activate fix for -O3 problem in interpreter loop.+
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# - qxflag=asmfastsync: Activate fix for performance problem with inline assembler with memory clobber.+
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QV10_OPT=$(if $(CXX_IS_V10),-qxflag=ASMMIDCOALFIX -qxflag=asmfastsync)+
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QV10_OPT_AGGRESSIVE=$(if $(CXX_IS_V10),-qhot=level=1 -qignerrno -qinline)+
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QV10_OPT_CONSERVATIVE=$(if $(CXX_IS_V10),-qhot=level=1 -qignerrno -qinline)+
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+
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# Disallow inlining for synchronizer.cpp, but perform O3 optimizations.+
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OPT_CFLAGS/synchronizer.o = $(OPT_CFLAGS) -qnoinline+
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+
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# Set all the xlC V10.1 options here.+
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OPT_CFLAGS += $(QV10_OPT) $(QV10_OPT_AGGRESSIVE)+
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+
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export OBJECT_MODE=64+
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+
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# Also build launcher as 64 bit executable.+
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LAUNCHERFLAGS += -q64+
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