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 CFLAGS += -qsuppress=1540-1090 -qsuppress=1500-010
  50 
  51 # Suppress 
  52 #  - 540-1088 (W) The exception specification is being ignored.
  53 # caused by throw() in declaration of new() in nmethod.hpp.
  54 CFLAGS += -qsuppress=1540-1088
  55 
  56 # Turn off floating-point optimizations that may alter program semantics
  57 OPT_CFLAGS += -qstrict
  58 
  59 # Disable aggressive optimizations for functions in sharedRuntimeTrig.cpp 
  60 # and sharedRuntimeTrans.cpp on ppc64. 
  61 # -qstrict turns off the following optimizations:
  62 #   * Performing code motion and scheduling on computations such as loads
  63 #     and floating-point computations that may trigger an exception.
  64 #   * Relaxing conformance to IEEE rules.
  65 #   * Reassociating floating-point expressions.
  66 # When using '-qstrict' there still remains one problem
  67 # in javasoft.sqe.tests.api.java.lang.Math.sin5Tests when run in compile-all
  68 # mode, so don't optimize sharedRuntimeTrig.cpp at all.
  69 OPT_CFLAGS/sharedRuntimeTrig.o = $(OPT_CFLAGS/NOOPT)
  70 OPT_CFLAGS/sharedRuntimeTrans.o = $(OPT_CFLAGS/NOOPT)
  71 
  72 # xlc 10.01 parameters for ipa compile.
  73 QIPA_COMPILE=$(if $(CXX_IS_V10),-qipa)
  74 
  75 # Xlc 10.1 parameters for aggressive optimization:
  76 # - qhot=level=1: Most aggressive loop optimizations.
  77 # - qignerrno: Assume errno is not modified by system calls.
  78 # - qinline: Inline method calls. No suboptions for c++ compiles.
  79 # - qxflag=ASMMIDCOALFIX: Activate fix for -O3 problem in interpreter loop.
  80 # - qxflag=asmfastsync: Activate fix for performance problem with inline assembler with memory clobber.
  81 QV10_OPT=$(if $(CXX_IS_V10),-qxflag=ASMMIDCOALFIX -qxflag=asmfastsync)
  82 QV10_OPT_AGGRESSIVE=$(if $(CXX_IS_V10),-qhot=level=1 -qignerrno -qinline)
  83 QV10_OPT_CONSERVATIVE=$(if $(CXX_IS_V10),-qhot=level=1 -qignerrno -qinline)
  84 
  85 # Disallow inlining for synchronizer.cpp, but perform O3 optimizations.
  86 OPT_CFLAGS/synchronizer.o = $(OPT_CFLAGS) -qnoinline
  87 
  88 # Set all the xlC V10.1 options here.
  89 OPT_CFLAGS += $(QIPA_COMPILE) $(QV10_OPT) $(QV10_OPT_AGGRESSIVE)
  90 
  91 export OBJECT_MODE=64
  92 
  93 # Also build launcher as 64 bit executable.
  94 LAUNCHERFLAGS += -q64