1c80e831b7
* compiler -march= parameter is changed from native to corei7
so code is always genereted with instructions which are available
on the Nehalem microarchitecture (up to SSE4.2)
* compiler -mtune= parameter is added so code is optimized for
corei7-avx which equals to Sandy Bridge microarchitecture
* set of macros is added which allows run-time detection of available
cpu instructions (e.g. clib_cpu_supports_avx())
* set of macros is added which allows us to clone graph node funcitons
where cloned function is optmized for different microarchitecture
Those macros are using following attributes:
__attribute__((flatten))
__attribute__((target("arch=core-avx2)))
I.e. If applied to foo_node_fn() macro will generate cloned
functions foo_node_fn_avx2() and foo_node_fn_avx512() (future)
It will also generate function void * foo_node_fn_multiarch_select()
which detects available instruction set and returns pointer to the
best matching function clone.
Change-Id: I2dce0ac92a5ede95fcb56f47f3d1f3c4c040bac0
Signed-off-by: Damjan Marion <damarion@cisco.com>
39 lines
1.5 KiB
Makefile
39 lines
1.5 KiB
Makefile
# Copyright (c) 2016 Cisco and/or its affiliates.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# vector packet processor
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vpp_lite_arch = native
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vpp_lite_march = corei7 # Nehalem Instruction set
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vpp_lite_mtune = corei7-avx # Optimize for Sandy Bridge
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vpp_lite_native_tools = vppapigen
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vpp_lite_uses_dpdk = no
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vpp_lite_root_packages = vpp vlib vlib-api vnet svm vpp-api-test \
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vpp-api gmod
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vlib_configure_args_vpp_lite = --with-pre-data=128
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vnet_configure_args_vpp_lite = --without-vcgn
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vpp_configure_args_vpp_lite = --without-vcgn
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vpp_lite_debug_TAG_CFLAGS = -g -O0 -DCLIB_DEBUG -DFORTIFY_SOURCE=2 -march=$(MARCH) \
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-fstack-protector-all -fPIC -Werror
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vpp_lite_debug_TAG_LDFLAGS = -g -O0 -DCLIB_DEBUG -DFORTIFY_SOURCE=2 -march=$(MARCH) \
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-fstack-protector-all -fPIC -Werror
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vpp_lite_TAG_CFLAGS = -g -O2 -DFORTIFY_SOURCE=2 -march=$(MARCH) -mtune=$(MTUNE) \
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-fstack-protector -fPIC -Werror
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vpp_lite_TAG_LDFLAGS = -g -O2 -DFORTIFY_SOURCE=2 -march=$(MARCH) -mtune=$(MTUNE) \
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-fstack-protector -fPIC -Werror
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