use kernel optimzer level -O3 and -LNO:simd for Xtensa HIFI5

tensorflow · Oct 21, 2024 · 459569a · 459569a
1 parent 122db20
commit 459569a
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/tensorflow/lite/micro/tools/make/ext_libs/xtensa.inc b/tensorflow/lite/micro/tools/make/ext_libs/xtensa.inc
@@ -58,6 +58,10 @@ else ifeq ($(TARGET_ARCH), hifi5)
   CCFLAGS += $(PLATFORM_FLAGS)
   CXXFLAGS += $(PLATFORM_FLAGS)
 
+  # override KERNEL_OPTIMIZATION_LEVEL to enable higher performance
+  # Xtensa intrinsics.
+  KERNEL_OPTIMIZATION_LEVEL := -O3 -LNO:simd
+
   NNLIB_PATH := $(MAKEFILE_DIR)/downloads/xa_nnlib_hifi5
   NDSPLIB_PATH := $(MAKEFILE_DIR)/downloads/ndsplib-hifi5