[CodeGen] Fix InstructionCount remarks for MI bundles

[francisvm]

For MI bundles, the instruction count remark doesn't count the instructions inside the bundle.

[arsenm]

This is probably by design. Code is supposed to logically treat a bundle as one instruction

[francisvm]

This is probably by design. Code is supposed to logically treat a bundle as one instruction

Some targets use bundles to mark instruction packet boundaries, no? IMO, that shouldn't be counted as one instruction.

[arsenm]

This is probably by design. Code is supposed to logically treat a bundle as one instruction

Some targets use bundles to mark instruction packet boundaries, no? IMO, that shouldn't be counted as one instruction.

Yes, that was the original use (assuming some details about how packets are represented). I don't know what "InstructionCount" here is supposed to really mean though

[francisvm]

This is probably by design. Code is supposed to logically treat a bundle as one instruction

Some targets use bundles to mark instruction packet boundaries, no? IMO, that shouldn't be counted as one instruction.

Yes, that was the original use (assuming some details about how packets are represented). I don't know what "InstructionCount" here is supposed to really mean though

I think regardless of bundles, they're still real MachineInstrs that get emitted, I don't see why they wouldn't get counted as regular instructions. I can see this count being a problem for pseudos that get expanded directly into MCInsts, but not for bundles.