commit 1720133d5c8c34b2854e7dacbc3ffa1cbf6e50e2
author Matt Arsenault <Matthew.Arsenault@amd.com> Tue Jan 08 01:22:47 2019 +0000
committer Matt Arsenault <Matthew.Arsenault@amd.com> Tue Jan 08 01:22:47 2019 +0000
tree e536c86cde5ff5a1008da7ec2b1a0c1cfb9983cf
parent f3f5c43b96f99048b0cd6f78d8850deedd215ebe

RegBankSelect: Fix copy insertion point for terminators

If a copy was needed to handle the condition of brcond, it was being
inserted before the defining instruction. Add tests for iterator edge
cases.

I find the existing code here suspect for the case where it's looking
for terminators that modify the register. It's going to insert a copy
in the middle of the terminators, which isn't allowed (it might be
necessary to have a COPY_terminator if anybody actually needs this).

Also legalize brcond for AMDGPU.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350595 91177308-0d34-0410-b5e6-96231b3b80d8