rename some patches

[openwrt-10.03/.git] / target / linux / generic-2.6 / patches-2.6.31 / 012-extra_optimization.patch

diff --git a/target/linux/generic-2.6/patches-2.6.31/012-extra_optimization.patch b/target/linux/generic-2.6/patches-2.6.31/012-extra_optimization.patch
new file mode 100644 (file)
index 0000000..e0ba515
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.31/012-extra_optimization.patch
@@ -0,0 +1,21 @@
+--- a/Makefile
++++ b/Makefile
+@@ -521,7 +521,7 @@ 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
+@@ -559,6 +559,9 @@ 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,)
+