[PATCH] D14346: Reduce size of MCRelaxableFragment

[Rafael Espíndola via llvm-commits]

> getSubtargetCopy is called here because STI is a unique_ptr and gets destructed when it goes out of scope. We don't need a copy here, but we need a subtarget object that is kept alive until it is used.

Oh, OK.

LGTM with the patch split in two.

Cheers,
Rafael