[PATCH] D37495: llvm-isel-fuzzer: Handle a subset of backend flags in the executable name

[Justin Bogner via Phabricator via llvm-commits]

bogner created this revision.
Herald added subscribers: kristof.beyls, igorb, mcrosier, aemerson.

Here we add a secondary option parser to llvm-isel-fuzzer (and provide
it for use with other fuzzers). With this, you can copy the fuzzer to
a name like llvm-isel-fuzzer:aarch64-gisel for a fuzzer that fuzzer
AArch64 with GlobalISel enabled, or fuzzer:x86_64 to fuzz x86, with no
flags required. This should be useful for running these in OSS-Fuzz.

Note that this handrolls a subset of cl::opts to recognize, rather
than embedding a complete command parser for argv[0]. If we find we
really need the flexibility of handling arbitrary options at some
point we can rethink this.


Repository:
  rL LLVM

https://reviews.llvm.org/D37495

Files:
  include/llvm/FuzzMutate/FuzzerCLI.h
  lib/FuzzMutate/FuzzerCLI.cpp
  test/tools/llvm-isel-fuzzer/execname-options.ll
  tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp

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