openwrt/target/linux/generic-2.6/patches-2.6.21/004-extra_optimization.patch

15 lines
523 B
Diff

Index: linux-2.6.21.7/Makefile
===================================================================
--- linux-2.6.21.7.orig/Makefile
+++ linux-2.6.21.7/Makefile
@@ -507,6 +507,9 @@ CFLAGS += $(call cc-option, -fn
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
CHECKFLAGS += $(NOSTDINC_FLAGS)
+# improve gcc optimization
+CFLAGS += $(call cc-option,-funit-at-a-time,)
+
# warn about C99 declaration after statement
CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)