Register passes in the spirv-opt fuzzer. (#1785)

The spirv-opt fuzzer is not registering any passes to run, so it is not
currently testing anything.  For now we will just register the
performance passes.

We should add different fuzzers for the legalization pass
(RegisterLegalizationPasses()), and the size passes
(RegisterSizePasses()).

1 files changed, 1 insertions, 0 deletions

diff --git a/testing/fuzzers/spvtools_opt_fuzzer.cpp b/testing/fuzzers/spvtools_opt_fuzzer.cpp
index 20ded9a0..7f94febc 100644
--- a/testing/fuzzers/spvtools_opt_fuzzer.cpp
+++ b/testing/fuzzers/spvtools_opt_fuzzer.cpp
@@ -30,6 +30,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
                      (data[i + 3]) << 24;
   }
 
+  optimizer.RegisterPerformancePasses();
   optimizer.Run(input.data(), input.size(), &input);
 
   return 0;