[PATCH] D29668: Elide argument copies during instruction selection

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

This seems to break swift. We probably have an i1 parameter ending in

  int FI = MFI.CreateFixedObject(ArgVT.getSizeInBits() / 8,
                                 VA.getLocMemOffset(), /*Immutable=*/false);

resulting in Assertion failed: (Size != 0 && "Cannot allocate zero size fixed stack objects!"), function CreateFixedObject, file /Volumes/Data/swift-next/lib/CodeGen/MachineFunction.cpp, line 824.

I am still working on a reproducer.


Repository:
  rL LLVM

https://reviews.llvm.org/D29668