[MCA] Parameterize variant scheduling classes by hash (#92849)

This patch looks up variant scheduling classes using a hash of the
instruction. Keying by the pointer breaks certain use cases that might
occur out of tree, like decoding an execution trace instruction by
instruction and creating MCA instructions as one goes along, like in the
MCAD case. In this case, the MCInst will always have the same address
and thus all instructions with the same variant scheduling class will
end up with the same instruction description, leading to undesired
behavior (assertions, uses after free, invalid results, etc.).

0 files changed, 0 insertions, 0 deletions