On Tue, Jul 3, 2018 at 1:38 PM Andrew Stubbs <andrew_stu...@mentor.com> wrote: > > On 03/07/18 12:30, Richard Biener wrote: > >> Hmm, so they're safe, but may prevent the optimization of nearby variables? > > > > Yes, they prevent earlier stores into lanes that are "really" written > > to to be DSEd. > > Right, but I have unrelated variables allocated to the stack within the > "shadow" of the masked vector. I didn't ask it to do that, it just does, > so I presume this is an expect feature of masked vectors with a known mask.
Huh, I don't think so. I guess that's the real error and I wonder how that happens. Are those just spills or real allocations? > Surely this prevents valid optimizations on those variables? > > Andrew
