#
#
#  BLIS
#  An object-based framework for developing high-performance BLAS-like
#  libraries.
#
#  Copyright (C) 2014, The University of Texas at Austin
#  Copyright (C) 2019, Advanced Micro Devices, Inc.
#
#  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.
#
#

# FLAGS that are specific to the 'zen2' architecture are added here.
# FLAGS that are common for all the AMD architectures are present in
# config/zen/amd_config.mk.

# Declare the name of the current configuration and add it to the
# running list of configurations included by common.mk.
THIS_CONFIG    := zen2
#CONFIGS_INCL   += $(THIS_CONFIG)

#
# --- Determine the C compiler and related flags ---
#

# Include file containing common flags for all AMD architectures.
AMD_CONFIG_FILE := amd_config.mk
AMD_CONFIG_PATH := $(BASE_SHARE_PATH)/config/zen
-include $(AMD_CONFIG_PATH)/$(AMD_CONFIG_FILE)

ifeq ($(CC_VENDOR),gcc)
  ifeq ($(GCC_OT_9_1_0),yes)
    ifeq ($(GCC_OT_6_1_0),yes)
    # If gcc is older than 6.1.0, we must use -march=bdver4 and then remove the
    # Bulldozer instruction sets that were omitted from Zen.
    CRVECFLAGS += -march=bdver4 -mno-fma4 -mno-tbm -mno-xop -mno-lwp
    CKVECFLAGS += -march=bdver4 -mno-fma4 -mno-tbm -mno-xop -mno-lwp
    else
    # If gcc is older than 9.1.0 but at least 6.1.0, then we can use -march=znver1
    # as the fallback option.
    CRVECFLAGS += -march=znver1 -mno-avx256-split-unaligned-store
    CKVECFLAGS += -march=znver1 -mno-avx256-split-unaligned-store
    endif
  else
  # If gcc is at least 9.1.0, then we can specify the microarchitecture using
  # the preferred option.
  CRVECFLAGS += -march=znver2
  CKVECFLAGS += -march=znver2
  endif
  else
  ifeq ($(CC_VENDOR),clang)
    ifeq ($(strip $(shell $(CC) -v |&head -1 |grep -c 'AOCC.LLVM.2\|AOCC_2')),1)
    CKVECFLAGS += -march=znver2
    else
    #if compiling with clang
    VENDOR_STRING := $(strip $(shell ${CC_VENDOR} --version | egrep -o '[0-9]+\.[0-9]+\.?[0-9]*'))
    CC_MAJOR := $(shell (echo ${VENDOR_STRING} | cut -d. -f1))
    #clang 9.0 or later:
    ifeq ($(shell test $(CC_MAJOR) -ge 9; echo $$?),0)
    CKVECFLAGS += -march=znver2
    else
    CKVECFLAGS += -march=znver1
    endif # ge 9
    endif # AOCC 2
  endif # Clang
endif # gcc

# Store all of the variables here to new variables containing the
# configuration name.
$(eval $(call store-make-defs,$(THIS_CONFIG)))