[PATCH] D52010: RegAllocFast: Rewrite and improve

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

In https://reviews.llvm.org/D52010#1289784, @atanasyan wrote:

> @abeserminji: Aleksandar, could you take a look at the `RegAllocFast::reloadAtBegin`? It looks like a necessity of using the `rafast-ignore-missing-defs` option is caused by the https://reviews.llvm.org/rL336328 commit.


BTW: You don't even need to apply this patch or look at any of the changes here. Just the dump the machine code of the tests before regalloc might be enough to see which vreg has no definition.


Repository:
  rL LLVM

https://reviews.llvm.org/D52010