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view make/solaris/makefiles/gcc.make @ 453:c96030fff130
6684579: SoftReference processing can be made more efficient
Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not.
Reviewed-by: jmasa
author | ysr |
---|---|
date | Thu, 20 Nov 2008 16:56:09 -0800 |
parents | d1605aabd0a1 |
children | c18cbe5936b8 |
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# # Copyright 1998-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, # CA 95054 USA or visit www.sun.com if you need additional information or # have any questions. # # #------------------------------------------------------------------------ # CC, CPP & AS CPP = g++ CC = gcc AS = $(CC) -c Compiler = gcc # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only # prints the numbers (e.g. "2.95", "3.2.1") CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) # Check for the versions of C++ and C compilers ($CPP and $CC) used. # Get the last thing on the line that looks like x.x+ (x is a digit). COMPILER_REV := \ $(shell $(CPP) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1) C_COMPILER_REV := \ $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2) # check for precompiled headers support ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0" USE_PRECOMPILED_HEADER=1 PRECOMPILED_HEADER_DIR=. PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/incls/_precompiled.incl.gch endif #------------------------------------------------------------------------ # Compiler flags # position-independent code PICFLAG = -fPIC VM_PICFLAG/LIBJVM = $(PICFLAG) VM_PICFLAG/AOUT = VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO)) CFLAGS += $(VM_PICFLAG) CFLAGS += -fno-rtti CFLAGS += -fno-exceptions CFLAGS += -D_REENTRANT CFLAGS += -fcheck-new ARCHFLAG = $(ARCHFLAG/$(BUILDARCH)) ARCHFLAG/sparc = -m32 -mcpu=v9 ARCHFLAG/sparcv9 = -m64 -mcpu=v9 ARCHFLAG/i486 = -m32 -march=i586 ARCHFLAG/amd64 = -m64 -march=k8 # Optional sub-directory in /usr/lib where BUILDARCH libraries are kept. ISA_DIR=$(ISA_DIR/$(BUILDARCH)) ISA_DIR/amd64=/amd64 ISA_DIR/i486= ISA_DIR/sparcv9=/64 CFLAGS += $(ARCHFLAG) AOUT_FLAGS += $(ARCHFLAG) LFLAGS += $(ARCHFLAG) ASFLAGS += $(ARCHFLAG) ifeq ($(BUILDARCH), amd64) ASFLAGS += -march=k8 -march=amd64 LFLAGS += -march=k8 endif # Use C++ Interpreter ifdef CC_INTERP CFLAGS += -DCC_INTERP endif # Keep temporary files (.ii, .s) ifdef NEED_ASM CFLAGS += -save-temps else CFLAGS += -pipe endif # Compiler warnings are treated as errors WARNINGS_ARE_ERRORS = -Werror # Enable these warnings. See 'info gcc' about details on these options ADDITIONAL_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ADDITIONAL_WARNINGS) # Special cases CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) # The flags to use for an Optimized g++ build OPT_CFLAGS += -O3 # Hotspot uses very unstrict aliasing turn this optimization off OPT_CFLAGS += -fno-strict-aliasing # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp # if we use expensive-optimizations # Note: all ia64 setting reflect the ones for linux # No actial testing was performed: there is no Solaris on ia64 presently ifeq ($(BUILDARCH), ia64) OPT_CFLAGS/bytecodeInterpreter.o += -fno-expensive-optimizations endif OPT_CFLAGS/NOOPT=-O0 #------------------------------------------------------------------------ # Linker flags # statically link libstdc++.so, work with gcc but ignored by g++ STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x. ifneq ("${CC_VER_MAJOR}", "2") STATIC_LIBGCC += -static-libgcc endif ifeq ($(BUILDARCH), ia64) # Note: all ia64 setting reflect the ones for linux # No actial testing was performed: there is no Solaris on ia64 presently LFLAGS += -Wl,-relax endif ifdef USE_GNULD # Enable linker optimization LFLAGS += -Xlinker -O1 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file. MAPFLAG = -Xlinker --version-script=FILENAME else MAPFLAG = -Xlinker -M -Xlinker FILENAME endif # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj SONAMEFLAG = -Xlinker -soname=SONAME # Build shared library SHARED_FLAG = -shared #------------------------------------------------------------------------ # Debug flags # Use the stabs format for debugging information (this is the default # on gcc-2.91). It's good enough, has all the information about line # numbers and local variables, and libjvm_g.so is only about 16M. # Change this back to "-g" if you want the most expressive format. # (warning: that could easily inflate libjvm_g.so to 150M!) # Note: The Itanium gcc compiler crashes when using -gstabs. DEBUG_CFLAGS/ia64 = -g DEBUG_CFLAGS/amd64 = -g DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),) DEBUG_CFLAGS += -gstabs endif MCS = /usr/ccs/bin/mcs