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#
#
# BLIS
# An object-based framework for developing high-performance BLAS-like
# libraries.
#
# Copyright (C) 2014, The University of Texas at Austin
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# - Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# - Neither the name(s) of the copyright holder(s) nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#
# Declare the name of the current configuration and add it to the
# running list of configurations included by common.mk.
THIS_CONFIG := skx
#CONFIGS_INCL += $(THIS_CONFIG)
#
# --- Determine the C compiler and related flags ---
#
# NOTE: The build system will append these variables with various
# general-purpose/configuration-agnostic flags in common.mk. You
# may specify additional flags here as needed.
CPPROCFLAGS :=
CMISCFLAGS :=
CPICFLAGS :=
CWARNFLAGS :=
ifneq ($(DEBUG_TYPE),off)
CDBGFLAGS := -g
endif
ifeq ($(DEBUG_TYPE),noopt)
COPTFLAGS := -O0
else
COPTFLAGS := -O2
endif
# Flags specific to optimized kernels.
# NOTE: The -fomit-frame-pointer option is needed for some kernels because
# they make explicit use of the rbp register.
CKOPTFLAGS := $(COPTFLAGS) -O3 -fomit-frame-pointer
ifeq ($(CC_VENDOR),gcc)
CKVECFLAGS := -mavx512f -mavx512dq -mavx512bw -mavx512vl -mfpmath=sse -march=skylake-avx512
else
ifeq ($(CC_VENDOR),icc)
CKVECFLAGS := -xCORE-AVX512
else
ifeq ($(CC_VENDOR),clang)
# NOTE: We have to use -march=haswell on Windows because apparently AVX512
# uses an alternate calling convention where xmm registers are not callee-saved
# on the stack. When this is mixed with framework code compiled for general
# x86_64 mode then chaos ensues (e.g. #514).
ifeq ($(IS_WIN),yes)
CKVECFLAGS := -mavx512f -mavx512dq -mavx512bw -mavx512vl -mfpmath=sse -march=haswell
else
CKVECFLAGS := -mavx512f -mavx512dq -mavx512bw -mavx512vl -mfpmath=sse -march=skylake-avx512
endif
else
$(error gcc, icc, or clang is required for this configuration.)
endif
endif
endif
# The assembler on OS X won't recognize AVX512 without help
ifneq ($(CC_VENDOR),icc)
ifeq ($(OS_NAME),Darwin)
CKVECFLAGS += -Wa,-march=skylake-avx512
endif
endif
# Flags specific to reference kernels.
# Note: We use AVX2 for reference kernels because, as Jeff Hammond says,
# reference kernel code "is not going to achieve high enough SIMD utilization
# to overcome the AVX-512 frequency drop". (Issue #187)
CROPTFLAGS := $(CKOPTFLAGS)
ifeq ($(CC_VENDOR),gcc)
CRVECFLAGS := -march=skylake-avx512 -mno-avx512f -mno-avx512vl -mno-avx512bw -mno-avx512dq -mno-avx512cd -funsafe-math-optimizations -ffp-contract=fast
else
ifeq ($(CC_VENDOR),icc)
CRVECFLAGS := -xCORE-AVX2
else
ifeq ($(CC_VENDOR),clang)
# NOTE: We have to use -march=haswell on Windows because apparently AVX512
# uses an alternate calling convention where xmm registers are not callee-saved
# on the stack. When this is mixed with framework code compiled for general
# x86_64 mode then chaos ensues (e.g. #514).
ifeq ($(IS_WIN),yes)
CRVECFLAGS := -march=haswell -funsafe-math-optimizations -ffp-contract=fast
else
CRVECFLAGS := -march=skylake-avx512 -mno-avx512f -mno-avx512vl -mno-avx512bw -mno-avx512dq -mno-avx512cd -funsafe-math-optimizations -ffp-contract=fast
endif
else
$(error gcc, icc, or clang is required for this configuration.)
endif
endif
endif
# Store all of the variables here to new variables containing the
# configuration name.
$(eval $(call store-make-defs,$(THIS_CONFIG)))
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