[Bug target/91735] [9/10 Regression] Runtime regression for SPEC2000 177.mesa on Haswell around the end of August 2018

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91735

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
The most trivial improvement is likely to recognize the vector parts we can
store via HImode.  There's already support for that but only if we can
uniformly
use HImode and not a mix of sizes.