From 9ceb5fda8112ab23d3410f6bfe3adbc364f26ff8 Mon Sep 17 00:00:00 2001
From: Naveen Dodda <ndodda@google.com>
Date: Wed, 24 Sep 2025 19:51:04 +0000
Subject: [PATCH] Remove xtensa and hifi kernels

---
 tensorflow/lite/micro/kernels/BUILD | 88 +----------------------------
 1 file changed, 1 insertion(+), 87 deletions(-)

diff --git a/tensorflow/lite/micro/kernels/BUILD b/tensorflow/lite/micro/kernels/BUILD
index 1bb25088..9671c204 100644
--- a/tensorflow/lite/micro/kernels/BUILD
+++ b/tensorflow/lite/micro/kernels/BUILD
@@ -9,11 +9,6 @@ load(
 load(
     "//tensorflow:extra_rules.bzl",
     "tflm_kernel_friends",
-    "xtensa_fusion_f1_config",
-    "xtensa_hifi_3_config",
-    "xtensa_hifi_3z_config",
-    "xtensa_hifi_5_config",
-    "xtensa_vision_p6_config",
 )
 
 package(
@@ -191,26 +186,6 @@ tflm_cc_library(
     ],
 )
 
-HIFI3_COPTS = [
-    "-DXTENSA=1",
-    "-DHIFI3=1",
-]
-
-HIFI4_COPTS = [
-    "-DXTENSA=1",
-    "-DHIFI4=1",
-]
-
-HIFI5_COPTS = [
-    "-DXTENSA=1",
-    "-DHIFI5=1",
-]
-
-VP6_COPTS = [
-    "-DXTENSA=1",
-    "-DVISION_P6=1",
-]
-
 tflm_kernel_cc_library(
     name = "micro_ops",
     srcs = [
@@ -354,26 +329,10 @@ tflm_kernel_cc_library(
         "transpose_conv.h",
         "unidirectional_sequence_lstm.h",
     ] + select({
-        xtensa_fusion_f1_config(): glob(["xtensa/**/*.h"]),
-        xtensa_hifi_3_config(): glob(["xtensa/**/*.h"]),
-        xtensa_hifi_3z_config(): glob(["xtensa/**/*.h"]),
-        xtensa_hifi_5_config(): glob(["xtensa/**/*.h"]),
-        xtensa_vision_p6_config(): glob(["xtensa/**/*.h"]),
         "//conditions:default": [],
     }),
-    accelerated_srcs = {
-        xtensa_fusion_f1_config(): glob(["xtensa/**/*.cc"]),
-        xtensa_hifi_3_config(): glob(["xtensa/**/*.cc"]),
-        xtensa_hifi_3z_config(): glob(["xtensa/**/*.cc"]),
-        xtensa_hifi_5_config(): glob(["xtensa/**/*.cc"]),
-        xtensa_vision_p6_config(): glob(["xtensa/**/*.cc"]),
-    },
+    accelerated_srcs = {},
     copts = tflm_copts() + select({
-        xtensa_fusion_f1_config(): HIFI4_COPTS,
-        xtensa_hifi_3_config(): HIFI3_COPTS,
-        xtensa_hifi_3z_config(): HIFI4_COPTS,
-        xtensa_hifi_5_config(): HIFI5_COPTS,
-        xtensa_vision_p6_config(): VP6_COPTS,
         "//conditions:default": [],
     }),
     visibility = [
@@ -405,11 +364,6 @@ tflm_kernel_cc_library(
         "//tensorflow/lite/schema:schema_fbs",
         "@flatbuffers//:runtime_cc",
     ] + select({
-        xtensa_fusion_f1_config(): ["//third_party/xtensa/nnlib_hifi4:nnlib_hifi4_lib"],
-        xtensa_hifi_3_config(): ["//third_party/xtensa/nnlib_hifi4:nnlib_hifi4_lib"],
-        xtensa_hifi_3z_config(): ["//third_party/xtensa/nnlib_hifi4:nnlib_hifi4_lib"],
-        xtensa_hifi_5_config(): ["//third_party/xtensa/nnlib_hifi5:nnlib_hifi5_lib"],
-        xtensa_vision_p6_config(): ["//third_party/xtensa/xi_tflmlib_vision_p6:xi_tflmlib_vision_p6_lib"],
         "//conditions:default": [],
     }),
 )
@@ -1538,45 +1492,5 @@ string_flag(
     build_setting_default = "",
     values = [
         "",
-        "xtensa_fusion_f1",
-        "xtensa_hifi_3",
-        "xtensa_hifi_3z",
-        "xtensa_hifi_5",
-        "xtensa_vision_p6",
     ],
 )
-
-config_setting(
-    name = "xtensa_fusion_f1_default",
-    flag_values = {
-        ":optimized_kernels": "xtensa_fusion_f1",
-    },
-)
-
-config_setting(
-    name = "xtensa_hifi_3_default",
-    flag_values = {
-        ":optimized_kernels": "xtensa_hifi_3",
-    },
-)
-
-config_setting(
-    name = "xtensa_hifi_3z_default",
-    flag_values = {
-        ":optimized_kernels": "xtensa_hifi_3z",
-    },
-)
-
-config_setting(
-    name = "xtensa_hifi_5_default",
-    flag_values = {
-        ":optimized_kernels": "xtensa_hifi_5",
-    },
-)
-
-config_setting(
-    name = "xtensa_vision_p6_default",
-    flag_values = {
-        ":optimized_kernels": "xtensa_vision_p6",
-    },
-)
-- 
2.51.0.536.g15c5d4f767-goog