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// Copyright 2023 Google LLC
//
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree.
#include <assert.h>
#include <stddef.h>
#ifdef _WIN32
#include <windows.h>
#else
#include <pthread.h>
#endif
#include <xnnpack/common.h>
#include <xnnpack/config.h>
#include <xnnpack/pad.h>
static struct xnn_xx_pad_config xx_pad_config = {0};
#if XNN_PLATFORM_WINDOWS
static INIT_ONCE init_guard = INIT_ONCE_STATIC_INIT;
#else
static pthread_once_t init_guard = PTHREAD_ONCE_INIT;
#endif
static void init_xx_pad_config(void) {
#if XNN_ARCH_ARM
const struct xnn_hardware_config* hardware_config = xnn_init_hardware_config();
assert(hardware_config != NULL);
if (hardware_config->use_arm_neon) {
xx_pad_config.ukernel = (xnn_pad_ukernel_fn) xnn_xx_pad_ukernel__neon;
xx_pad_config.row_tile = 1;
} else if (!XNN_PLATFORM_MOBILE) {
xx_pad_config.ukernel = (xnn_pad_ukernel_fn) xnn_xx_pad_ukernel__scalar;
xx_pad_config.row_tile = 1;
}
#elif XNN_ARCH_ARM64
xx_pad_config.ukernel = (xnn_pad_ukernel_fn) xnn_xx_pad_ukernel__neon;
xx_pad_config.row_tile = 1;
#elif XNN_ARCH_X86 || XNN_ARCH_X86_64
xx_pad_config.ukernel = (xnn_pad_ukernel_fn) xnn_xx_pad_ukernel__sse2;
xx_pad_config.row_tile = 1;
#elif XNN_ARCH_WASMSIMD || XNN_ARCH_WASMRELAXEDSIMD
xx_pad_config.ukernel = (xnn_pad_ukernel_fn) xnn_xx_pad_ukernel__wasmsimd;
xx_pad_config.row_tile = 1;
#elif XNN_ARCH_WASM
xx_pad_config.ukernel = (xnn_pad_ukernel_fn) xnn_xx_pad_ukernel__scalar;
xx_pad_config.row_tile = 1;
#elif XNN_ARCH_RISCV
xx_pad_config.ukernel = (xnn_pad_ukernel_fn) xnn_xx_pad_ukernel__scalar;
xx_pad_config.row_tile = 1;
#else
#error "Unsupported architecture"
#endif
}
#if XNN_PLATFORM_WINDOWS
static BOOL CALLBACK init_xx_pad_config_windows(PINIT_ONCE init_once, PVOID parameter, PVOID* context) {
init_xx_pad_config();
return TRUE;
}
#endif
const struct xnn_xx_pad_config* xnn_init_xx_pad_config() {
const struct xnn_hardware_config* hardware_config = xnn_init_hardware_config();
if (hardware_config == NULL) {
return NULL;
}
#if XNN_PLATFORM_WINDOWS
InitOnceExecuteOnce(&init_guard, &init_xx_pad_config_windows, NULL, NULL);
#else
pthread_once(&init_guard, &init_xx_pad_config);
#endif
return &xx_pad_config;
}
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