[PATCH] D134501: [PowerPC] Fix the register allocation hints for ACC registers.

[Stefan Pintilie via Phabricator via llvm-commits]

stefanp created this revision.
stefanp added reviewers: nemanjai, lei.
Herald added subscribers: shchenz, kbarton, hiraditya.
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The allocation hints for copies of ACC registers assumed that we would only be
copying between VSRp and UACC registers. In reality it is also possible to copy
between UACC and ACC registers.

This patch adds a new case for the ACC copy to fix that issue.
Note that the test case added with this patch will hit an assert without the
fix.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D134501

Files:
  llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp
  llvm/test/CodeGen/PowerPC/mma-acc-copy-hints.ll

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