[PATCH] D132606: Fix CSR update check

[Matthias Braun via Phabricator via llvm-commits]

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D132080 <https://reviews.llvm.org/D132080> introduced a bug leading to `RegisterClassInfo` caches not getting invalidated when there was exactly one more CSR register added.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D132606

Files:
  llvm/lib/CodeGen/RegisterClassInfo.cpp
  llvm/test/CodeGen/PowerPC/pcrel-call-linkage-leaf.ll
  llvm/test/CodeGen/XCore/scavenging.ll

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