[PATCH] D65019: [ARM] push LR before __gnu_mcount_nc

[Eli Friedman via Phabricator via cfe-commits]

efriedma added a comment.

This seems better.

I'm not sure I follow why this needs special handling in SelectionDAGBuilder::visitIntrinsicCall, as opposed to just using ISD::INTRINSIC_VOID like other similar target-specific intrinsics.  (You can custom-lower INTRINSIC_VOID in ARMTargetLowering::LowerOperation, if that makes it easier.)

I'd just skip changing fast-isel; with an intrinsic, if fast-isel misses, we just fall back to the SelectionDAG code that does the right thing.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D65019/new/

https://reviews.llvm.org/D65019