[Bug rtl-optimization/87507] IRA unnecessarily uses non-volatile registers during register assignment

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87507

Peter Bergner <bergner at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                URL|https://gcc.gnu.org/ml/gcc- |https://gcc.gnu.org/ml/gcc-
                   |patches/2018-11/msg00887.ht |patches/2018-11/msg01120.ht
                   |ml                          |ml

--- Comment #10 from Peter Bergner <bergner at gcc dot gnu.org> ---
Submitted a new patch that changes lower-subreg to decompose the problematic
register pairs into separate regs which are easier to allocate.