[LLVMdev] Instruction scheduling barrier

[Mark Schimmel]

I found myself wanting a "scheduling barrier" in LLVM.  In my specific circumstances I only want it to mean that TargetInstrInfoImpl::isSchedulingBoundary() would return true.

I added SchedulingBarrier to MCID in MCInstrDesc.h and pushed it through TD attributes down to isSchedulingBoundary().  Is this something of general interest, or is there another mechanism for implementing barriers that I missed?


Thanks

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