[PATCH] D21808: [WebAssembly] Handle debug information and virtual registers without crashing

[Dan Gohman via llvm-commits]

sunfish added a comment.

I'm concerned about the changes in DbgValueHistoryCalculator.cpp. WebAssembly is currently using virtual registers essentially in the way other architectures use physical registers at this point, so it's not obvious that, eg., just skipping clobberRegisterUses for virtual registers is the right approach.


http://reviews.llvm.org/D21808