[Diffusion] rL253518: Fix returned value for GVN: could return "false" even after modifying the IR

[Mehdi AMINI via llvm-commits]

joker.eph added a subscriber: joker.eph.
joker.eph added auditors: 3.7-release, llvm-commits, tstellarAMD.
joker.eph added a comment.

This is very low risk and fix potential bug/crash.


Users:
  3.7-release (Auditor)
  llvm-commits (Auditor)
  tstellarAMD (Auditor)

http://reviews.llvm.org/rL253518