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build: Experimental LTO support, phase one

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* Only codecs and plugins are enabled
 * Only native builds (so far)
 * Only tested on xDuoo X3 (MIPS, monochrome)
 * opus & speex generate some warnings
 * Significant compile time impact

Change-Id: I519b0d179631a54b2103cd67225bd5ec6ad3bd2f
This commit is contained in:
Solomon Peachy 2023-07-02 20:43:01 -04:00
parent 7b12cc3927
commit 73f40d8a23
4 changed files with 31 additions and 1 deletions
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12
apps/plugins/plugins.make
View file

@ -37,6 +37,12 @@ PLUGINLIB_OBJ := $(PLUGINLIB_SRC:.c=.o)
PLUGINLIB_OBJ := $(PLUGINLIB_OBJ:.S=.o) PLUGINLIB_OBJ := $(PLUGINLIB_OBJ:.S=.o)
PLUGINLIB_OBJ := $(call full_path_subst,$(ROOTDIR)/%,$(BUILDDIR)/%,$(PLUGINLIB_OBJ)) PLUGINLIB_OBJ := $(call full_path_subst,$(ROOTDIR)/%,$(BUILDDIR)/%,$(PLUGINLIB_OBJ))
ifdef USE_LTO
# We do NOT want LTO on the GCC support file.
$(BUILDDIR)/apps/plugins/lib/gcc-support.o: PLUGINFLAGS += -fno-lto
$(BUILDDIR)/apps/plugins/plugin_crt0.o: PLUGINFLAGS += -fno-lto
endif
### build data / rules ### build data / rules
ifndef APP_TYPE ifndef APP_TYPE
CONFIGFILE := $(FIRMDIR)/export/config/$(MODELNAME).h CONFIGFILE := $(FIRMDIR)/export/config/$(MODELNAME).h
@ -147,6 +153,12 @@ else
endif endif
PLUGINLDFLAGS += $(GLOBAL_LDOPTS) PLUGINLDFLAGS += $(GLOBAL_LDOPTS)
ifdef USE_LTO
PLUGINFLAGS += -flto -fno-builtin -ffreestanding
PLUGINLDFLAGS += -flto -fno-builtin -ffreestanding
PLUGINLDFLAGS += -e plugin_start
endif
$(BUILDDIR)/%.rock: $(BUILDDIR)/%.rock:
$(call PRINTS,LD $(@F))$(CC) $(PLUGINFLAGS) -o $(BUILDDIR)/$*.elf \ $(call PRINTS,LD $(@F))$(CC) $(PLUGINFLAGS) -o $(BUILDDIR)/$*.elf \
$(filter %.o, $^) \ $(filter %.o, $^) \

7
lib/rbcodec/codecs/codecs.make
View file

@ -33,6 +33,13 @@ else
endif endif
CODECLDFLAGS += $(GLOBAL_LDOPTS) CODECLDFLAGS += $(GLOBAL_LDOPTS)
ifdef USE_LTO
CODECLDFLAGS += -flto -fno-builtin -ffreestanding
CODECFLAGS += -flto -fno-builtin -ffreestanding
CODECLDFLAGS += -e __header
endif
# the codec libraries # the codec libraries
include $(RBCODECLIB_DIR)/codecs/demac/libdemac.make include $(RBCODECLIB_DIR)/codecs/demac/libdemac.make
include $(RBCODECLIB_DIR)/codecs/liba52/liba52.make include $(RBCODECLIB_DIR)/codecs/liba52/liba52.make

5
lib/rbcodec/codecs/lib/libcodec.make
View file

@ -23,6 +23,11 @@ ifneq ($(findstring sdl-sim, $(APP_TYPE)), sdl-sim)
CODECLIBFLAGS += -ffunction-sections CODECLIBFLAGS += -ffunction-sections
endif endif
ifdef USE_LTO
# We do NOT want LTO on the GCC support file
$(CODECDIR)/lib/codeclib.o: CODECLIBFLAGS += -fno-lto
endif
$(CODECDIR)/lib/%.o: $(RBCODECLIB_DIR)/codecs/lib/%.c $(CODECDIR)/lib/%.o: $(RBCODECLIB_DIR)/codecs/lib/%.c
$(SILENT)mkdir -p $(dir $@) $(SILENT)mkdir -p $(dir $@)
$(call PRINTS,CC $(subst $(ROOTDIR)/,,$<))$(CC) \ $(call PRINTS,CC $(subst $(ROOTDIR)/,,$<))$(CC) \

8
tools/configure vendored
View file

@ -945,13 +945,14 @@ whichadvanced () {
echo "" echo ""
printf "Enter your developer options (press only enter when done)\n\ printf "Enter your developer options (press only enter when done)\n\
(D)EBUG, (L)ogf, Boot(c)hart, (S)imulator, (P)rofiling, (V)oice, (U)SB Serial, (W)in32 crosscompile,\n\ (D)EBUG, (L)ogf, Boot(c)hart, (S)imulator, (P)rofiling, (V)oice, (U)SB Serial, (W)in32 crosscompile,\n\
Win(6)4 crosscompile, (T)est plugins, (O)mit plugins, S(m)all C lib, Logf to Ser(i)al port:" Win(6)4 crosscompile, (T)est plugins, (O)mit plugins, S(m)all C lib, Logf to Ser(i)al port, LTO (B)uild "
if [ "$modelname" = "iaudiom5" ]; then if [ "$modelname" = "iaudiom5" ]; then
printf ", (F)M radio MOD" printf ", (F)M radio MOD"
fi fi
if [ "$modelname" = "iriverh120" ]; then if [ "$modelname" = "iriverh120" ]; then
printf ", (R)TC MOD" printf ", (R)TC MOD"
fi fi
printf ":"
echo "" echo ""
fi fi
@ -1043,6 +1044,10 @@ Win(6)4 crosscompile, (T)est plugins, (O)mit plugins, S(m)all C lib, Logf to Ser
win32crosscompile="yes" win32crosscompile="yes"
win64="yes" win64="yes"
;; ;;
[Bb])
echo "LTO build enabled"
LTO_ARG="export USE_LTO=y"
;;
"") # Match enter press when finished with advanced options "") # Match enter press when finished with advanced options
cont=0 cont=0
;; ;;
@ -4806,6 +4811,7 @@ export ANDROID_PLATFORM_VERSION=${ANDROID_PLATFORM_VERSION}
export TOOLSET=${toolset} export TOOLSET=${toolset}
export PIPER_MODEL_DIR=${PIPER_MODEL_DIR} export PIPER_MODEL_DIR=${PIPER_MODEL_DIR}
$CCACHE_ARG $CCACHE_ARG
$LTO_ARG
CONFIGURE_OPTIONS=${cmdline} CONFIGURE_OPTIONS=${cmdline}