Allocating larger register classes first should give better allocation
results (and more importantly for myself, make the lit tests more stable
with respect to scheduler changes).
Patch by Matthias Braun
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270312 91177308-0d34-0410-b5e6-96231b3b80d8
The one regression in the builtin tests is in the read2 test which now
(again) has many extra copies, but this should be solved once the pass
is replaced with a DAG combine.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@253974 91177308-0d34-0410-b5e6-96231b3b80d8
