Re: [PATCH] Fix up memset handling in DSE (PR rtl-optimization/69891)

2016-02-26 Thread Richard Biener
On Fri, 26 Feb 2016, Jakub Jelinek wrote: > Hi! > > As analyzed by Eric, DSE mishandles memset calls if it can't figure out what > the arguments to memset exactly are (it handles only register arguments > right now), or if the second or third arguments are not CONST_INTs. > In that case we don't

[PATCH] Fix up memset handling in DSE (PR rtl-optimization/69891)

2016-02-26 Thread Jakub Jelinek
Hi! As analyzed by Eric, DSE mishandles memset calls if it can't figure out what the arguments to memset exactly are (it handles only register arguments right now), or if the second or third arguments are not CONST_INTs. In that case we don't call record_store, because we don't know what to call i