[llvm-dev] FileCheck wishlist

Thomas Preud'homme via llvm-dev llvm-dev at lists.llvm.org
Tue Oct 22 19:01:53 PDT 2019


I'm looking for some feedback on pain points people have with FileCheck in terms of missing features to help people interested in working on FileCheck to prioritize the work accordingly. I am personally interested in improving FileCheck on 2 issues whenever time permits it:

  *   being able to test for consecutive lines in arbitrary order, i.e. something akin to CHECK-DAG blocks where all lines matched are consecutive
  *   DAG regions to be able to look for sequences of code that can be interleaved, which would be useful to check for register dependencies accross several operands, e.g. allowing all valid interleaving of instructions in the following sequence:

load rA, [rT]
load rB, [rX]
load rC, [rY]
load rD, [rZ]
mul rF, rA, rB
mul rG, rC, rD
add rH, rF, rG

I would therefore like to be able to define two sequences each composed of 2 loads in any order (thus using the solution for the first issue) followed by a mul that can be interleaved between each other which are followed by an add.

Do people have any other wishlist item? I propose to compile a list of all suggestions and do a poll to get an idea of what features seems to be the most wanted. This can then be used by whoever is interested in contributed to FileCheck to maximize the impact of their contribution, myself included.

Best regards,


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