add optimization mode for size

Author: JaccovG

README.md

@@ -73,6 +73,15 @@ Building of embARC MLI library
 
 5. Result Quality shall be "S/N=1823.9     (65.2 db)"
 
+## Optimizations for code size
+------------------------------
+By default the embARC MLI Library is build for optimal speed. If code size needs to be reduced, there are two things that can be done:
+1. For convolution and pooling layers there are specialized funtions for specific kernel sizes, they are called by a wrapper functions based on the parameters.
+These parameters are compile time constant in the application, so the application can directly call the specialized functions. This will reduce over all code size.
+Please be aware that the list of specializations is not guaranteed to be backwards compatible between releases.
+
+2. Use a different optimization mode when calling the makefile. OPTMODE=size will optimize for size. default is OPTMODE=speed
+	'gmake TCF_FILE=../../hw/em9d.tcf OPTMODE=size'
 
 ## Known Issues
 ---------------

build/rules.mk

@@ -64,6 +64,8 @@ quote=$(subst %,$(Q)%, \
 # Global settings
 #=============================================================
 TOOLCHAIN ?= gnu
+#optmization mode
+OPTMODE ?= speed
 
 export DEBUG_BUILD?=ON
 #export ASM_OUT?=OFF
@@ -76,6 +78,13 @@ endif
 #    # CFLAGS += -Hon=Print_var_info
 #endif
 
+ifeq ($(OPTMODE),size)
+	CFLAGS += -O2 -Hlto
+endif
+ifeq ($(OPTMODE),speed)
+	CFLAGS += -O3
+endif
+
 #=============================================================
 # Files and directories
 #=============================================================

examples/example_cifar10_caffe/Makefile

@@ -28,7 +28,7 @@ BUILD_DIR    ?= ./obj
 OUT_NAME     ?= example_cifar10_caffe
 ifeq ($(TOOLCHAIN),mwdt)
 # MWDT specific options
-CFLAGS       =  -Hnocopyr -Hpurge -Hheap=8K -Hstack=1K -Hfxapi -e_start -Bgrouplib -Hldopt=-q -O0 -Hsdata0
+CFLAGS       =  -Hnocopyr -Hpurge -Hheap=8K -Hstack=1K -Hfxapi -e_start -Bgrouplib -Hldopt=-q -Hsdata0 -Xdsp_ctrl=postshift,guard,convergent -Hdense_prologue
 else
 PREBUILT_LIB ?= $(EMBARC_MLI_DIR)/examples/prebuilt/libmli.a
 

examples/example_har_smartphone/Makefile

@@ -28,7 +28,7 @@ BUILD_DIR    ?= ./obj
 OUT_NAME     ?= example_har_smartphone
 ifeq ($(TOOLCHAIN),mwdt)
 # MWDT specific options
-CFLAGS       =  -Hnocopyr -Hpurge -Hheap=8K -Hstack=1K -Hfxapi -e_start -Bgrouplib -Hldopt=-q -O0 -Hsdata0
+CFLAGS       =  -Hnocopyr -Hpurge -Hheap=8K -Hstack=1K -Hfxapi -e_start -Bgrouplib -Hldopt=-q -Hsdata0 -Xdsp_ctrl=postshift,guard,convergent -Hdense_prologue
 else
 PREBUILT_LIB ?= $(EMBARC_MLI_DIR)/examples/prebuilt/libmli.a
 

lib/make/makefile

@@ -53,7 +53,7 @@ LIBRARY_DIR ?= ../../bin
 OUT_NAME    ?= libmli
 BUILD_DIR   ?= ../../obj
 GEN_DIR     ?= ../gen
-CFLAGS      += -O3 -Xdsp_ctrl=postshift,guard,convergent -Hnocopyr -Hfxapi -Hpurge -Hsdata0 -Hdense_prologue
+CFLAGS      += -Xdsp_ctrl=postshift,guard,convergent -Hnocopyr -Hfxapi -Hpurge -Hsdata0 -Hdense_prologue
 
 vpath %.py  $(GEN_DIR)
 vpath %.txt  $(GEN_DIR)