[PATCH] D94376: [MemCpyOpt] Enable MemorySSA by default

[Alina Sbirlea via Phabricator via llvm-commits]

asbirlea added a comment.

I'm seeing crashes with this at stage3 in `llvm::MemCpyOptPass::processMemCpyMemCpyDependence` when invoking MSSA's Walker. I should have a repro next week.



================
Comment at: lib/Transforms/IPO/PassManagerBuilder.cpp:496
   // TODO: Investigate if this is too expensive at O1.
+  MPM.add(createMemCpyOptPass());               // Remove memcpy / form memset
   if (OptLevel > 1) {
----------------
Move above comment.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D94376/new/

https://reviews.llvm.org/D94376