[PATCH] D81073: [PowerPC][NFC] Testing ROTL of v1i128.

Wed Jun 3 03:15:44 PDT 2020

Esme created this revision.
Esme added reviewers: PowerPC, steven.zhang, nemanjai, jsji.
Herald added subscribers: llvm-commits, shchenz.
Herald added a project: LLVM.
Esme retitled this revision from "[PowerPC]{NFC} Testing ROTL of v1i128." to "[PowerPC][NFC] Testing ROTL of v1i128.".

A bug is reported by bug-45628 <https://bugs.llvm.org/show_bug.cgi?id=45628>, where the swap_with_shift case can't be matched to a single HW instruction `xxswapd` as expected. In fact the case matches the idiom of rotate, but PPC doesn't support ROTL v1i128.
This is a NFC patch for testing swap_with_shift with v1i128 at master.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D81073

Files:
  llvm/test/CodeGen/PowerPC/pr45628.ll

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