mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-16 22:06:36 +00:00
194eceff43
Whilst trying to clean up some loop vectoriser IR tests (see test/Transforms/LoopVectorize/AArch64/partial-reduce-chained.ll for example) a reviewer on PR #129047 suggested it would be nice to have an option to stop generating CHECK lines after a certain point. Typically when performing a transformation with the loop vectoriser we don't usually care about any CHECK lines generated for the scalar tail of the loop, since the scalar loop is kept intact. Previously if you wanted to eliminate such unwanted CHECK lines you had to run the update script, then manually delete all the lines corresponding to the scalar loop. This can be very time consuming if the tests ever need changing. What I've tried to do here is add a new --filter-out-after option alongside the existing --filter* options that provides support for stopping the generation of any CHECK lines beyond the line that matches the filter. With the existing filter options we never generate CHECK-NEXT lines, but we still care about ordering with --filter-out-after so I've amended the code to ensure we treat this filter differently.