Update code so that the O3 CPU can handle not initially having anything hooked up to its ports.  This fixes the segfault Ali recently found when using sampling.

src/cpu/o3/fetch.hh:
src/cpu/o3/fetch_impl.hh:
    Update code so that the O3 CPU can handle not initially having anything hooked up to its ports.

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extra : convert_revision : 04bcef44e754735d821509ebd69b0ef9c8ef8e2c
2 files changed