d0e0ff01ad
This patch changes the definition of v8_optimized_debug==1 to match the release-mode compiler optimization settings (generally, going from -O1 to -O3 on Linux, similar switches for Mac/Win). This produces a minor speed up on Linux, but significant speedups on Mac and Win. This may make it much harder to debug, though. It also adds a v8_optimized_debug==2 that, in addition to the compiler optimizations, undef's DEBUG and defines DEBUG. This leaves V8_ENABLE_CHECKS alone (so that the assertions are still enabled), but otherwise basically matches a release mode build. Builds with v8_optimized_debug==2 roughly match a Release mode build for speed; the V8_ENABLE_CHECKS checks appear to have minimal performance impact (maybe 5-10%, unlike what was previously thought). In addition, switching from the previous optimization settings makes a significant improvement on Mac and Win (50% or more), and switching from DEBUG to NDEBUG makes a significant improvement (another 50% or more). Note that using v8_optimized_debug==2 may also cause some v8 tests to fail. This is currently is believed to be acceptable. R=machenbach@chromium.org BUG=254188 Review URL: https://codereview.chromium.org/19384011 Patch from Dirk Pranke <dpranke@chromium.org>. git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15937 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
676 lines
23 KiB
Python
676 lines
23 KiB
Python
# Copyright 2013 the V8 project authors. All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# Shared definitions for all V8-related targets.
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{
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'variables': {
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'msvs_use_common_release': 0,
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'gcc_version%': 'unknown',
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'CXX%': '${CXX:-$(which g++)}', # Used to assemble a shell command.
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'v8_target_arch%': '<(target_arch)',
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# Native Client builds currently use the V8 ARM JIT and
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# arm/simulator-arm.cc to defer the significant effort required
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# for NaCl JIT support. The nacl_target_arch variable provides
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# the 'true' target arch for places in this file that need it.
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# TODO(bradchen): get rid of nacl_target_arch when someday
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# NaCl V8 builds stop using the ARM simulator
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'nacl_target_arch%': 'none', # must be set externally
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# Setting 'v8_can_use_vfp32dregs' to 'true' will cause V8 to use the VFP
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# registers d16-d31 in the generated code, both in the snapshot and for the
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# ARM target. Leaving the default value of 'false' will avoid the use of
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# these registers in the snapshot and use CPU feature probing when running
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# on the target.
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'v8_can_use_vfp32dregs%': 'false',
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'arm_test%': 'off',
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# Similar to vfp but on MIPS.
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'v8_can_use_fpu_instructions%': 'true',
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# Similar to the ARM hard float ABI but on MIPS.
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'v8_use_mips_abi_hardfloat%': 'true',
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# Default arch variant for MIPS.
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'mips_arch_variant%': 'mips32r2',
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'v8_enable_backtrace%': 0,
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# Speeds up Debug builds:
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# 0 - compiler optimizations off (debuggable) (default). This may
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# be 5x slower than Release (or worse).
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# 1 - turn on compiler optimizations. and #undef DEBUG/#define NDEBUG.
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# This may be hard or impossible to debug. This may still be
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# 2x slower than Release (or worse).
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# 2 - Turn on optimizations, and also #undef DEBUG / #define NDEBUG
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# (but leave V8_ENABLE_CHECKS and most other assertions enabled.
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# This may cause some v8 tests to fail in the Debug configuration.
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# This roughly matches the performance of a Release build and can
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# be used by embedders that need to build their own code as debug
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# but don't want or need a debug version of V8. This should produce
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# near-release speeds.
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'v8_optimized_debug%': 0,
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# Enable profiling support. Only required on Windows.
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'v8_enable_prof%': 0,
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# Some versions of GCC 4.5 seem to need -fno-strict-aliasing.
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'v8_no_strict_aliasing%': 0,
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# Chrome needs this definition unconditionally. For standalone V8 builds,
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# it's handled in build/standalone.gypi.
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'want_separate_host_toolset%': 1,
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'host_os%': '<(OS)',
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'werror%': '-Werror',
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# For a shared library build, results in "libv8-<(soname_version).so".
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'soname_version%': '',
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# Allow to suppress the array bounds warning (default is no suppression).
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'wno_array_bounds%': '',
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},
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'target_defaults': {
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'conditions': [
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['v8_target_arch=="arm"', {
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'defines': [
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'V8_TARGET_ARCH_ARM',
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],
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'target_conditions': [
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['_toolset=="host"', {
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'variables': {
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'armcompiler': '<!($(echo ${CXX_host:-$(which g++)}) -v 2>&1 | grep -q "^Target: arm" && echo "yes" || echo "no")',
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},
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'conditions': [
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['armcompiler=="yes"', {
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'conditions': [
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[ 'armv7==1', {
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'cflags': ['-march=armv7-a',],
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}],
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[ 'armv7==1 or armv7=="default"', {
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'conditions': [
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[ 'arm_neon==1', {
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'cflags': ['-mfpu=neon',],
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},
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{
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'conditions': [
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[ 'arm_fpu!="default"', {
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'cflags': ['-mfpu=<(arm_fpu)',],
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}],
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],
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}],
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],
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}],
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[ 'arm_float_abi!="default"', {
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'cflags': ['-mfloat-abi=<(arm_float_abi)',],
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}],
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[ 'arm_thumb==1', {
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'cflags': ['-mthumb',],
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}],
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[ 'arm_thumb==0', {
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'cflags': ['-marm',],
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}],
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[ 'arm_test=="on"', {
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'defines': [
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'ARM_TEST',
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],
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}],
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],
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}, {
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# armcompiler=="no"
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'conditions': [
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[ 'armv7==1 or armv7=="default"', {
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'defines': [
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'CAN_USE_ARMV7_INSTRUCTIONS=1',
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],
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'conditions': [
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[ 'arm_fpu=="default"', {
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'defines': [
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'CAN_USE_VFP3_INSTRUCTIONS',
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],
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}],
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[ 'arm_fpu=="vfpv3-d16"', {
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'defines': [
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'CAN_USE_VFP3_INSTRUCTIONS',
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],
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}],
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[ 'arm_fpu=="vfpv3"', {
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'defines': [
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'CAN_USE_VFP3_INSTRUCTIONS',
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'CAN_USE_VFP32DREGS',
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],
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}],
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[ 'arm_fpu=="neon" or arm_neon==1', {
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'defines': [
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'CAN_USE_VFP3_INSTRUCTIONS',
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'CAN_USE_VFP32DREGS',
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],
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}],
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],
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}],
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[ 'arm_float_abi=="hard"', {
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'defines': [
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'USE_EABI_HARDFLOAT=1',
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],
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}],
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[ 'arm_float_abi=="softfp" or arm_float_abi=="default"', {
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'defines': [
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'USE_EABI_HARDFLOAT=0',
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],
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}],
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],
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'defines': [
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'ARM_TEST',
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],
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}],
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],
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}], # _toolset=="host"
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['_toolset=="target"', {
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'variables': {
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'armcompiler': '<!($(echo ${CXX_target:-<(CXX)}) -v 2>&1 | grep -q "^Target: arm" && echo "yes" || echo "no")',
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},
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'conditions': [
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['armcompiler=="yes"', {
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'conditions': [
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[ 'armv7==1', {
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'cflags': ['-march=armv7-a',],
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}],
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[ 'armv7==1 or armv7=="default"', {
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'conditions': [
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[ 'arm_neon==1', {
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'cflags': ['-mfpu=neon',],
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},
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{
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'conditions': [
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[ 'arm_fpu!="default"', {
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'cflags': ['-mfpu=<(arm_fpu)',],
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}],
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],
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}],
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],
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}],
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[ 'arm_float_abi!="default"', {
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'cflags': ['-mfloat-abi=<(arm_float_abi)',],
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}],
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[ 'arm_thumb==1', {
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'cflags': ['-mthumb',],
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}],
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[ 'arm_thumb==0', {
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'cflags': ['-marm',],
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}],
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[ 'arm_test=="on"', {
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'defines': [
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'ARM_TEST',
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],
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}],
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],
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}, {
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# armcompiler=="no"
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'conditions': [
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[ 'armv7==1 or armv7=="default"', {
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'defines': [
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'CAN_USE_ARMV7_INSTRUCTIONS=1',
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],
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'conditions': [
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[ 'arm_fpu=="default"', {
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'defines': [
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'CAN_USE_VFP3_INSTRUCTIONS',
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],
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}],
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[ 'arm_fpu=="vfpv3-d16"', {
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'defines': [
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'CAN_USE_VFP3_INSTRUCTIONS',
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],
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}],
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[ 'arm_fpu=="vfpv3"', {
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'defines': [
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'CAN_USE_VFP3_INSTRUCTIONS',
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'CAN_USE_VFP32DREGS',
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],
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}],
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[ 'arm_fpu=="neon" or arm_neon==1', {
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'defines': [
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'CAN_USE_VFP3_INSTRUCTIONS',
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'CAN_USE_VFP32DREGS',
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],
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}],
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],
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}],
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[ 'arm_float_abi=="hard"', {
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'defines': [
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'USE_EABI_HARDFLOAT=1',
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],
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}],
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[ 'arm_float_abi=="softfp" or arm_float_abi=="default"', {
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'defines': [
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'USE_EABI_HARDFLOAT=0',
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],
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}],
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],
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'defines': [
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'ARM_TEST',
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],
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}],
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],
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}], # _toolset=="target"
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],
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}], # v8_target_arch=="arm"
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['v8_target_arch=="ia32"', {
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'defines': [
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'V8_TARGET_ARCH_IA32',
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],
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}], # v8_target_arch=="ia32"
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['v8_target_arch=="mipsel"', {
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'defines': [
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'V8_TARGET_ARCH_MIPS',
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],
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'variables': {
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'mipscompiler': '<!($(echo <(CXX)) -v 2>&1 | grep -q "^Target: mips" && echo "yes" || echo "no")',
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},
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'conditions': [
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['mipscompiler=="yes"', {
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'target_conditions': [
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['_toolset=="target"', {
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'cflags': ['-EL'],
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'ldflags': ['-EL'],
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'conditions': [
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[ 'v8_use_mips_abi_hardfloat=="true"', {
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'cflags': ['-mhard-float'],
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'ldflags': ['-mhard-float'],
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}, {
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'cflags': ['-msoft-float'],
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'ldflags': ['-msoft-float'],
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}],
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['mips_arch_variant=="mips32r2"', {
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'cflags': ['-mips32r2', '-Wa,-mips32r2'],
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}],
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['mips_arch_variant=="mips32r1"', {
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'cflags': ['-mips32', '-Wa,-mips32'],
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}],
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['mips_arch_variant=="loongson"', {
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'cflags': ['-mips3', '-Wa,-mips3'],
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}],
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],
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}],
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],
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}],
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[ 'v8_can_use_fpu_instructions=="true"', {
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'defines': [
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'CAN_USE_FPU_INSTRUCTIONS',
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],
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}],
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[ 'v8_use_mips_abi_hardfloat=="true"', {
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'defines': [
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'__mips_hard_float=1',
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'CAN_USE_FPU_INSTRUCTIONS',
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],
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}, {
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'defines': [
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'__mips_soft_float=1'
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],
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}],
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['mips_arch_variant=="mips32r2"', {
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'defines': ['_MIPS_ARCH_MIPS32R2',],
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}],
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['mips_arch_variant=="loongson"', {
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'defines': ['_MIPS_ARCH_LOONGSON',],
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}],
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],
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}], # v8_target_arch=="mipsel"
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['v8_target_arch=="x64"', {
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'defines': [
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'V8_TARGET_ARCH_X64',
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],
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'xcode_settings': {
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'ARCHS': [ 'x86_64' ],
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},
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'msvs_settings': {
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'VCLinkerTool': {
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'StackReserveSize': '2097152',
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},
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},
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'msvs_configuration_platform': 'x64',
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}], # v8_target_arch=="x64"
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['OS=="win"', {
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'defines': [
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'WIN32',
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],
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'msvs_configuration_attributes': {
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'OutputDirectory': '<(DEPTH)\\build\\$(ConfigurationName)',
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'IntermediateDirectory': '$(OutDir)\\obj\\$(ProjectName)',
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'CharacterSet': '1',
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},
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}],
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['OS=="win" and v8_enable_prof==1', {
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'msvs_settings': {
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'VCLinkerTool': {
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'GenerateMapFile': 'true',
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},
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},
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}],
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['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris" \
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or OS=="netbsd"', {
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'conditions': [
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[ 'v8_no_strict_aliasing==1', {
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'cflags': [ '-fno-strict-aliasing' ],
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}],
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], # conditions
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}],
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['OS=="solaris"', {
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'defines': [ '__C99FEATURES__=1' ], # isinf() etc.
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}],
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['(OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris" \
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or OS=="netbsd" or OS=="mac" or OS=="android") and \
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(v8_target_arch=="arm" or v8_target_arch=="ia32" or \
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v8_target_arch=="mipsel")', {
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# Check whether the host compiler and target compiler support the
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# '-m32' option and set it if so.
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'target_conditions': [
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['_toolset=="host"', {
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'variables': {
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'm32flag': '<!((echo | $(echo ${CXX_host:-$(which g++)}) -m32 -E - > /dev/null 2>&1) && echo "-m32" || true)',
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},
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'cflags': [ '<(m32flag)' ],
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'ldflags': [ '<(m32flag)' ],
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'xcode_settings': {
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'ARCHS': [ 'i386' ],
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},
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}],
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['_toolset=="target"', {
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'variables': {
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'm32flag': '<!((echo | $(echo ${CXX_target:-<(CXX)}) -m32 -E - > /dev/null 2>&1) && echo "-m32" || true)',
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'clang%': 0,
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},
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'conditions': [
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['(OS!="android" or clang==1) and \
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nacl_target_arch!="nacl_x64"', {
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'cflags': [ '<(m32flag)' ],
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'ldflags': [ '<(m32flag)' ],
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}],
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],
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'xcode_settings': {
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'ARCHS': [ 'i386' ],
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},
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}],
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],
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}],
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['(OS=="linux") and (v8_target_arch=="x64")', {
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# Check whether the host compiler and target compiler support the
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# '-m64' option and set it if so.
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'target_conditions': [
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['_toolset=="host"', {
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'variables': {
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'm64flag': '<!((echo | $(echo ${CXX_host:-$(which g++)}) -m64 -E - > /dev/null 2>&1) && echo "-m64" || true)',
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},
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'cflags': [ '<(m64flag)' ],
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'ldflags': [ '<(m64flag)' ],
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}],
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['_toolset=="target"', {
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'variables': {
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'm64flag': '<!((echo | $(echo ${CXX_target:-<(CXX)}) -m64 -E - > /dev/null 2>&1) && echo "-m64" || true)',
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},
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'cflags': [ '<(m64flag)' ],
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'ldflags': [ '<(m64flag)' ],
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}]
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],
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}],
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['OS=="freebsd" or OS=="openbsd"', {
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'cflags': [ '-I/usr/local/include' ],
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}],
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['OS=="netbsd"', {
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'cflags': [ '-I/usr/pkg/include' ],
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}],
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], # conditions
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'configurations': {
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'Debug': {
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'defines': [
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'ENABLE_DISASSEMBLER',
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'V8_ENABLE_CHECKS',
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'OBJECT_PRINT',
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'VERIFY_HEAP',
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],
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'msvs_settings': {
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'VCCLCompilerTool': {
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'conditions': [
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['component=="shared_library"', {
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'RuntimeLibrary': '3', # /MDd
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}, {
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'RuntimeLibrary': '1', # /MTd
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}],
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['v8_optimized_debug==0', {
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'Optimization': '0',
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}, {
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'Optimization': '2',
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'InlineFunctionExpansion': '2',
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'EnableIntrinsicFunctions': 'true',
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'FavorSizeOrSpeed': '0',
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'StringPooling': 'true',
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|
'BasicRuntimeChecks': '0',
|
|
'conditions': [
|
|
['component=="shared_library"', {
|
|
'RuntimeLibrary': '2', #/MD
|
|
}, {
|
|
'RuntimeLibrary': '0', #/MT
|
|
}],
|
|
['v8_target_arch=="x64"', {
|
|
# TODO(2207): remove this option once the bug is fixed.
|
|
'WholeProgramOptimization': 'true',
|
|
}],
|
|
],
|
|
}],
|
|
],
|
|
},
|
|
'VCLinkerTool': {
|
|
'conditions': [
|
|
['v8_optimized_debug==0', {
|
|
'LinkIncremental': '2',
|
|
}, {
|
|
'LinkIncremental': '1',
|
|
'OptimizeReferences': '2',
|
|
'EnableCOMDATFolding': '2',
|
|
}],
|
|
],
|
|
},
|
|
},
|
|
'conditions': [
|
|
['v8_optimized_debug==2', {
|
|
'defines': [
|
|
'NDEBUG',
|
|
],
|
|
}, {
|
|
'defines': [
|
|
'DEBUG',
|
|
],
|
|
}],
|
|
['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', {
|
|
'cflags': [ '-Wall', '<(werror)', '-W', '-Wno-unused-parameter',
|
|
'-Wnon-virtual-dtor', '-Woverloaded-virtual',
|
|
'<(wno_array_bounds)' ],
|
|
'conditions': [
|
|
['v8_optimized_debug==0', {
|
|
'cflags!': [
|
|
'-O0',
|
|
'-O3',
|
|
'-O2',
|
|
'-O1',
|
|
'-Os',
|
|
],
|
|
'cflags': [
|
|
'-fdata-sections',
|
|
'-ffunction-sections',
|
|
],
|
|
}],
|
|
['v8_optimized_debug==1', {
|
|
'cflags!': [
|
|
'-O0',
|
|
'-O3', # TODO(2807) should be -O1.
|
|
'-O2',
|
|
'-Os',
|
|
],
|
|
'cflags': [
|
|
'-fdata-sections',
|
|
'-ffunction-sections',
|
|
'-O1', # TODO(2807) should be -O3.
|
|
],
|
|
}],
|
|
['v8_optimized_debug==2', {
|
|
'cflags!': [
|
|
'-O0',
|
|
'-O1',
|
|
'-O2',
|
|
'-Os',
|
|
],
|
|
'cflags': [
|
|
'-fdata-sections',
|
|
'-ffunction-sections',
|
|
'-O3',
|
|
],
|
|
}],
|
|
['v8_optimized_debug!=0 and gcc_version==44 and clang==0', {
|
|
'cflags': [
|
|
# Avoid crashes with gcc 4.4 in the v8 test suite.
|
|
'-fno-tree-vrp',
|
|
],
|
|
}],
|
|
],
|
|
}],
|
|
['OS=="linux" and v8_enable_backtrace==1', {
|
|
# Support for backtrace_symbols.
|
|
'ldflags': [ '-rdynamic' ],
|
|
}],
|
|
['OS=="android"', {
|
|
'variables': {
|
|
'android_full_debug%': 1,
|
|
},
|
|
'conditions': [
|
|
['android_full_debug==0', {
|
|
# Disable full debug if we want a faster v8 in a debug build.
|
|
# TODO(2304): pass DISABLE_DEBUG_ASSERT instead of hiding DEBUG.
|
|
'defines!': [
|
|
'DEBUG',
|
|
],
|
|
}],
|
|
],
|
|
}],
|
|
['OS=="mac"', {
|
|
'xcode_settings': {
|
|
'conditions': [
|
|
['v8_optimized_debug==0', {
|
|
'GCC_OPTIMIZATION_LEVEL': '0', # -O0
|
|
}, {
|
|
'GCC_OPTIMIZATION_LEVEL': '3', # -O3
|
|
'GCC_STRICT_ALIASING': 'YES',
|
|
}],
|
|
],
|
|
},
|
|
}],
|
|
],
|
|
}, # Debug
|
|
'Release': {
|
|
'conditions': [
|
|
['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', {
|
|
'cflags!': [
|
|
'-O2',
|
|
'-Os',
|
|
],
|
|
'cflags': [
|
|
'-fdata-sections',
|
|
'-ffunction-sections',
|
|
'-O3',
|
|
'<(wno_array_bounds)',
|
|
],
|
|
'conditions': [
|
|
[ 'gcc_version==44 and clang==0', {
|
|
'cflags': [
|
|
# Avoid crashes with gcc 4.4 in the v8 test suite.
|
|
'-fno-tree-vrp',
|
|
],
|
|
}],
|
|
],
|
|
}],
|
|
['OS=="android"', {
|
|
'cflags!': [
|
|
'-O3',
|
|
'-Os',
|
|
],
|
|
'cflags': [
|
|
'-fdata-sections',
|
|
'-ffunction-sections',
|
|
'-O2',
|
|
],
|
|
'conditions': [
|
|
[ 'gcc_version==44 and clang==0', {
|
|
'cflags': [
|
|
# Avoid crashes with gcc 4.4 in the v8 test suite.
|
|
'-fno-tree-vrp',
|
|
],
|
|
}],
|
|
],
|
|
}],
|
|
['OS=="mac"', {
|
|
'xcode_settings': {
|
|
'GCC_OPTIMIZATION_LEVEL': '3', # -O3
|
|
|
|
# -fstrict-aliasing. Mainline gcc
|
|
# enables this at -O2 and above,
|
|
# but Apple gcc does not unless it
|
|
# is specified explicitly.
|
|
'GCC_STRICT_ALIASING': 'YES',
|
|
},
|
|
}], # OS=="mac"
|
|
['OS=="win"', {
|
|
'msvs_settings': {
|
|
'VCCLCompilerTool': {
|
|
'Optimization': '2',
|
|
'InlineFunctionExpansion': '2',
|
|
'EnableIntrinsicFunctions': 'true',
|
|
'FavorSizeOrSpeed': '0',
|
|
'StringPooling': 'true',
|
|
'conditions': [
|
|
['component=="shared_library"', {
|
|
'RuntimeLibrary': '2', #/MD
|
|
}, {
|
|
'RuntimeLibrary': '0', #/MT
|
|
}],
|
|
['v8_target_arch=="x64"', {
|
|
# TODO(2207): remove this option once the bug is fixed.
|
|
'WholeProgramOptimization': 'true',
|
|
}],
|
|
],
|
|
},
|
|
'VCLinkerTool': {
|
|
'LinkIncremental': '1',
|
|
'OptimizeReferences': '2',
|
|
'EnableCOMDATFolding': '2',
|
|
},
|
|
},
|
|
}], # OS=="win"
|
|
], # conditions
|
|
}, # Release
|
|
}, # configurations
|
|
}, # target_defaults
|
|
}
|