[all-commits] [llvm/llvm-project] 5067f4: [LV] Check opt-for-size before expanding runtime c...

[Florian Hahn via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5067f4b6261c07d5df94bf18407235d83ce33861
      https://github.com/llvm/llvm-project/commit/5067f4b6261c07d5df94bf18407235d83ce33861
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2020-08-29 (Sat, 29 Aug 2020)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

  Log Message:
  -----------
  [LV] Check opt-for-size before expanding runtime checks.

Move bail out when optimizing for size before runtime check generation.
In that case, we do not use the result of the expansion, the expanded
instruction will be dead and cleaned up later.

By doing the check before expanding the runtime-checks, we can save a
bit of unnecessary work.