commit b70e54f12d25b35680bc59ad5df72797beb15408
author Sanjay Patel <spatel@rotateright.com> Thu Mar 08 20:42:49 2018 +0000
committer Sanjay Patel <spatel@rotateright.com> Thu Mar 08 20:42:49 2018 +0000
tree 95234616a7a9fdfbae55e2ca6648d8560bb7edd3
parent c29d246f516ee2af47da0ea2b9fafd930e8dec67

[ConstantFold] fp_binop undef, undef --> undef

These are uncontroversial and independent of a proposed LangRef edits (D44216).

I tried to fix tests that would fold away:
rL327004
rL327028
rL327030
rL327034

I'm not sure if the Reassociate tests are meaningless yet, but they probably will be 
as we add more folds, so if anyone has suggestions or wants to fix those, please do.

Differential Revision: https://reviews.llvm.org/D44258


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@327058 91177308-0d34-0410-b5e6-96231b3b80d8