[PATCH] D128317: stop llvm-reduce from introducing undefs

[Nuno Lopes via Phabricator via llvm-commits]

nlopes added a comment.

In D128317#3612910 <https://reviews.llvm.org/D128317#3612910>, @arsenm wrote:

> I don't agree with this change. I definitely don't agree with changing the MIR reduction. I would say most of the value I've received from bugpoint and llvm-reduce is in finding bugs from mishandling undefs

If the original test case had undef, it is kept. This change just prevents introduction of more undefs.
llvm-reduce is not a fuzzer, so its job is not to create weird programs to find new bugs. I agree fuzzers should create programs with undef and everything else.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D128317/new/

https://reviews.llvm.org/D128317