application: add benchmark toolchain makefiles for hightec

Test it like this

hightec toolchain current 0.3.0 version code size still can be
improved

$ cat application/baremetal/benchmark/quick_bench.sh

for case in coremark dhrystone whetstone; do
    pushd $case
    export SIMULATION=1
    //export GDBREMOTE="whss6:23000"
    echo "Build $case for TOOLCHAIN=hightec"
    make TOOLCHAIN=hightec CORE=n300f DOWNLOAD=sram SILENT=1 clean all
    make TOOLCHAIN=hightec CORE=n300f DOWNLOAD=sram SILENT=1 upload
    sleep 10
    echo "Build $case for TOOLCHAIN=nuclei_gnu"
    make TOOLCHAIN=nuclei_gnu CORE=n300f DOWNLOAD=sram SILENT=1 clean all
    make TOOLCHAIN=nuclei_gnu CORE=n300f DOWNLOAD=sram SILENT=1 upload
    sleep 10
    popd
done

Signed-off-by: Huaqi Fang <[email protected]>

application/baremetal/benchmark/coremark/toolchain_hightec.mk

@@ -0,0 +1,2 @@
+BENCH_FLAGS ?= -O3 -flto -falign-functions=4 -falign-loops=4
+LDFLAGS += -Wl,-mllvm,--align-all-nofallthru-blocks=2

application/baremetal/benchmark/dhrystone/toolchain_hightec.mk

@@ -0,0 +1,7 @@
+ifeq ($(DHRY_MODE),ground)
+BENCH_FLAGS ?= -Ofast -flto -fno-inline -fno-builtin-printf -funroll-loops -falign-functions=4 -falign-loops=4
+else ifeq ($(DHRY_MODE),best)
+BENCH_FLAGS ?= -Ofast -flto -finline -fno-builtin-printf -funroll-loops -falign-functions=4 -falign-loops=4 -finline-functions
+else ifeq ($(DHRY_MODE),inline)
+BENCH_FLAGS ?= -O3 -flto -finline -fno-builtin-printf -funroll-loops -falign-functions=4 -falign-loops=4 -finline-functions
+endif

application/baremetal/benchmark/whetstone/toolchain_hightec.mk

@@ -0,0 +1 @@
+BENCH_FLAGS ?= -Ofast -funroll-loops