[PATCH] D54367: RegAllocFast: Improve hinting heuristic

Sun Mar 17 10:56:10 PDT 2019

arsenm added a comment.
Herald added a project: LLVM.

I do see test changes with this (at least with D54366 <https://reviews.llvm.org/D54366> reverted). At least one of them is a regression for this situation:

  %11:sreg_32_xm0 = COPY %0.sub1
  %12:sreg_32_xm0 = COPY %0.sub0

This inserts 2 64-bit restores of %0, and each one uses only one of the subregisters. Previously this did the right thing, and only restored once

Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D54367/new/

https://reviews.llvm.org/D54367