realtek: rt-loader increase gcc optimization level

Switch from -O2 to -O3. This increases the loader code size by
5KB and brings down the decompression time on RTL838x from
~6.5 seconds to ~3.5 seconds.

Link: https://github.com/openwrt/openwrt/pull/23811
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>

diff --git a/target/linux/realtek/image/rt-loader/Makefile b/target/linux/realtek/image/rt-loader/Makefile
index 198506bce8f4dda68e29d6fa18c8546f1b78e4fd..90f8349c9670ba52ff75ba7ad890c52f20c2cc69 100644 (file)
--- a/target/linux/realtek/image/rt-loader/Makefile
+++ b/target/linux/realtek/image/rt-loader/Makefile
@@ -73,7 +73,7 @@ LD            := $(CROSS_COMPILE)ld
 OBJCOPY                := $(CROSS_COMPILE)objcopy
 OBJDUMP                := $(CROSS_COMPILE)objdump
 
-CFLAGS         = -fpic -mabicalls -O2 -fno-builtin-printf -Iinclude
+CFLAGS         = -fpic -mabicalls -O3 -fno-builtin-printf -Iinclude
 CFLAGS         += -DFLASH_ADDR=$(FLASH_ADDR)
 CFLAGS         += -DKERNEL_ADDR=$(KERNEL_ADDR)