[PATCH] D71002: [PowerPC] Exploitate the Vector Integer Average Instructions

[qshanz via Phabricator via llvm-commits]

steven.zhang created this revision.
steven.zhang added reviewers: nemanjai, jsji, hfinkel, PowerPC.
Herald added subscribers: shchenz, wuzish, kbarton, hiraditya.
Herald added a project: LLVM.

PowerPC has instruction to do the semantics of this piece of code:

  vector int foo(vector int m, vector int n) {
    return (m + n + 1) >> 1;
  }

This patch is adding the match rule to select it.


https://reviews.llvm.org/D71002

Files:
  llvm/lib/Target/PowerPC/PPCInstrAltivec.td
  llvm/test/CodeGen/PowerPC/vavg.ll

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