[LLVMdev] string input for the integrated assembler

[Tim Northover]

> It sounds like you're doing the expansion directly in the InstPrinter.
> Most targets using fused pseudo-instructions like this do it either in
> a separate pass (e.g. AArch64ExpandPseudoInsts.cpp) or during the
> lowering from MachineInstr to MCInst(s).

Another option that occurred is enhancing the PseudoInstExpansion
handling to cover multiple instructions. Currently it can only produce
1 output, but I don't think there's any fundamental reason it the
output couldn't be a list of instructions instead.

Cheers.

Tim.