[gardening][vm][fuzz] divergence ReleaseSIMARM64 vs DebugSIMARM64C

[dcharkes]

solate (/b/s/w/itxb1yll64/dart_fuzzUXAVAV) FP NO-FFI FLAT : JIT-SLOWPATH-DET-ReleaseSIMARM64 - JIT-OPTCOUNTER-DET-DebugSIMARM64C: !DIVERGENCE! 1.101:1203086137 (output)

out1 and out2 are different:

is different.
Expected: ... 0.565459, 0.000000,  ...
  Actual: ... 0.565459, -0.000000, ...
                        ^
 Differ at offset 6137

-- BEGIN REPRODUCE  --

DART SDK REVISION: 

dart runtime/tools/dartfuzz/dartfuzz.dart --fp --no-ffi --flat --seed 1203086137 fuzz.dart

-- RUN 1 --

out/ReleaseSIMARM64/dart --use-slow-path --deterministic --old_gen_heap_size=128 /b/s/w/itxb1yll64/dart_fuzzUXAVAV/fuzz.dart

-- RUN 2 --

out/DebugSIMARM64C/dart --optimization_counter_threshold=1 --deterministic --old_gen_heap_size=128 /b/s/w/itxb1yll64/dart_fuzzUXAVAV/fuzz.dart

-- END REPRODUCE  --

https://logs.chromium.org/logs/dart/buildbucket/cr-buildbucket/8738390725973939873/+/u/collect_shards/dartfuzz_-_generated_programs_shard_42/task_stdout_stderr:dartfuzz-_generated_programs_shard_42