[llvm-bugs] [Bug 32607] Crash in NewGVN if run after LICM

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Apr 13 20:09:29 PDT 2017


Daniel Berlin <dberlin at dberlin.org> changed:

           What    |Removed                     |Added
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Daniel Berlin <dberlin at dberlin.org> ---
This has been fixed another way.
We now treat phis with undef + at least one more reachable value as
multi-valued phis, and we only allow it to use undef if we prove it is

(IE the phi is not dependent on any expressions that depend on the phi value)

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