1 # 2 # Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved. 3 # Copyright 2012, 2013 SAP AG. All rights reserved. 4 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 # 6 # This code is free software; you can redistribute it and/or modify it 7 # under the terms of the GNU General Public License version 2 only, as 8 # published by the Free Software Foundation. 9 # 10 # This code is distributed in the hope that it will be useful, but WITHOUT 11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 # version 2 for more details (a copy is included in the LICENSE file that 14 # accompanied this code). 15 # 16 # You should have received a copy of the GNU General Public License version 17 # 2 along with this work; if not, write to the Free Software Foundation, 18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 # 20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 # or visit www.oracle.com if you need additional information or have any 22 # questions. 23 # 24 # 25 26 # Produce 64 bits object files. 27 CFLAGS += -q64 28 29 # Balanced tuning for recent versions of the POWER architecture (if supported by xlc). 30 QTUNE=$(if $(CXX_SUPPORTS_BALANCED_TUNING),balanced,pwr5) 31 32 # Try to speed up the interpreter: use ppc64 instructions and inline 33 # glue code for external functions. 34 OPT_CFLAGS += -qarch=ppc64 -qtune=$(QTUNE) -qinlglue 35 36 # We need variable length arrays 37 CFLAGS += -qlanglvl=c99vla 38 # Just to check for unwanted macro redefinitions 39 CFLAGS += -qlanglvl=noredefmac 40 41 # Suppress those "implicit private" warnings xlc gives. 42 # - The omitted keyword "private" is assumed for base class "...". 43 CFLAGS += -qsuppress=1540-0198 44 45 # Suppress the following numerous warning: 46 # - 1540-1090 (I) The destructor of "..." might not be called. 47 # - 1500-010: (W) WARNING in ...: Infinite loop. Program may not stop. 48 # There are several infinite loops in the vm, suppress. 49 # - 1540-1639 (I) The behavior of long type bit fields has changed ... 50 # ... long type bit fields now default to long, not int. 51 CFLAGS += -qsuppress=1540-1090 -qsuppress=1500-010 -qsuppress=1540-1639 52 53 # Suppress 54 # - 540-1088 (W) The exception specification is being ignored. 55 # caused by throw() in declaration of new() in nmethod.hpp. 56 CFLAGS += -qsuppress=1540-1088 57 58 # Turn off floating-point optimizations that may alter program semantics 59 OPT_CFLAGS += -qstrict 60 61 # Disable aggressive optimizations for functions in sharedRuntimeTrig.cpp 62 # and sharedRuntimeTrans.cpp on ppc64. 63 # -qstrict turns off the following optimizations: 64 # * Performing code motion and scheduling on computations such as loads 65 # and floating-point computations that may trigger an exception. 66 # * Relaxing conformance to IEEE rules. 67 # * Reassociating floating-point expressions. 68 # When using '-qstrict' there still remains one problem 69 # in javasoft.sqe.tests.api.java.lang.Math.sin5Tests when run in compile-all 70 # mode, so don't optimize sharedRuntimeTrig.cpp at all. 71 OPT_CFLAGS/sharedRuntimeTrig.o = $(OPT_CFLAGS/NOOPT) 72 OPT_CFLAGS/sharedRuntimeTrans.o = $(OPT_CFLAGS/NOOPT) 73 74 # xlc 10.01 parameters for ipa compile. 75 QIPA_COMPILE=$(if $(CXX_IS_V10),-qipa) 76 77 # Xlc 10.1 parameters for aggressive optimization: 78 # - qhot=level=1: Most aggressive loop optimizations. 79 # - qignerrno: Assume errno is not modified by system calls. 80 # - qinline: Inline method calls. No suboptions for c++ compiles. 81 # - qxflag=ASMMIDCOALFIX: Activate fix for -O3 problem in interpreter loop. 82 # - qxflag=asmfastsync: Activate fix for performance problem with inline assembler with memory clobber. 83 QV10_OPT=$(if $(CXX_IS_V10),-qxflag=ASMMIDCOALFIX -qxflag=asmfastsync) 84 QV10_OPT_AGGRESSIVE=$(if $(CXX_IS_V10),-qhot=level=1 -qignerrno -qinline) 85 QV10_OPT_CONSERVATIVE=$(if $(CXX_IS_V10),-qhot=level=1 -qignerrno -qinline) 86 87 # Disallow inlining for synchronizer.cpp, but perform O3 optimizations. 88 OPT_CFLAGS/synchronizer.o = $(OPT_CFLAGS) -qnoinline 89 90 # Set all the xlC V10.1 options here. 91 OPT_CFLAGS += $(QIPA_COMPILE) $(QV10_OPT) $(QV10_OPT_AGGRESSIVE) 92 93 export OBJECT_MODE=64 94 95 # Also build launcher as 64 bit executable. 96 LAUNCHERFLAGS += -q64