Revert "remove some flags"

This reverts commit db283ef8fc5680f1260897803fe45641da5cb8cb.

Conflicts:

	Makefile

Change-Id: I734d6a5903be3bba1b71a912e529cd6acd645280
Fix

Change-Id: Ie0f5b46f61fa72d453f080429c31ee48da46d36a
Revert "revert optimization flags"

This reverts commit dc826a1a42dbb4d251dac00a87a91a76cb72a144.

Conflicts:

	Makefile

Change-Id: If851ba7a449ae0c2846f85988fcbfabd15c60e58