diff options
Diffstat (limited to 'target/linux/generic/patches-2.6.38/012-extra_optimization.patch')
| -rw-r--r-- | target/linux/generic/patches-2.6.38/012-extra_optimization.patch | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/target/linux/generic/patches-2.6.38/012-extra_optimization.patch b/target/linux/generic/patches-2.6.38/012-extra_optimization.patch new file mode 100644 index 000000000..4984fad29 --- /dev/null +++ b/target/linux/generic/patches-2.6.38/012-extra_optimization.patch @@ -0,0 +1,21 @@ +--- a/Makefile ++++ b/Makefile +@@ -541,7 +541,7 @@ 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 +@@ -596,6 +596,9 @@ 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,) + |