38ead98b2f
Hi, Richi. This patch is adding LEN_MASK_STORE into DSE. My understanding is LEN_MASK_STORE is predicated by mask and len. No matter len is constant or not, the ao_ref should be the same as MASK_STORE. Wheras for LEN_STORE, when len is constant, we use (len - bias), otherwise, it's the same as MASK_STORE/LEN_MASK_STORE. Not sure whether I am on the same page with you, feel free to correct me. Thanks. gcc/ChangeLog: * tree-ssa-dse.cc (initialize_ao_ref_for_dse): Add LEN_MASK_STORE and fix LEN_STORE. (dse_optimize_stmt): Add LEN_MASK_STORE. |
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