[PATCH] D70450: [AArch64] Teach Load/Store optimizier to rename store operands for pairing.

[Petr Hosek via Phabricator via llvm-commits]

phosek added a comment.

In D70450#1793699 <https://reviews.llvm.org/D70450#1793699>, @phosek wrote:

> This change seems to have broken `-ffixed-xX`, we've noticed that our kernel started crashing with tip-of-tree Clang. After debugging, we found out that compiler would generate stores to x15 even though we compile with `-ffixed-x15` which breaks the kernel because x15 is used to store per-cpu state. Would it be possible to revert or fix this issue ASAP please?


I've filed PR44358 to track this and I've also included a reproducer in that bug.


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D70450