+++ /dev/null
---- a/Makefile
-+++ b/Makefile
-@@ -523,7 +523,7 @@ all: vmlinux
- ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
- KBUILD_CFLAGS += -Os
- else
--KBUILD_CFLAGS += -O2
-+KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch
- endif
-
- include $(srctree)/arch/$(SRCARCH)/Makefile
-@@ -561,6 +561,9 @@ endif
- 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
- KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
-