tree 4f76d6dc6f23d94a20055b75bbd01b24b584c58a
parent 847eaac01e8d015644c082f85671fe93b9a26e24
author Kerry McLaughlin <kerry.mclaughlin@arm.com> 1616679422 +0000
committer Copybara-Service <copybara-worker@google.com> 1616712426 -0700

[SVE][LoopVectorize] Verify support for vectorizing loops with invariant loads

D95598 added a cost model for broadcast shuffle, which should enable loops
such as the following to vectorize, where the load of b[42] is invariant
and can be done using a scalar load + splat:

  for (int i=0; i<n; ++i)
    a[i] = b[i] + b[42];

This patch adds tests to verify that we can vectorize such loops.

Reviewed By: joechrisellis

Differential Revision: https://reviews.llvm.org/D98506

GitOrigin-RevId: 1f4649969062fd2b43dcc09c79eb977c83749caa