RenameIndependentSubregs: Fix handling of undef tied operands
authorMark Searles <m.c.searles@gmail.com>
Mon, 9 Jul 2018 20:07:03 +0000 (20:07 +0000)
committerMark Searles <m.c.searles@gmail.com>
Mon, 9 Jul 2018 20:07:03 +0000 (20:07 +0000)
commit7139dea6d9734792675ee8befa97a401f0a5cd07
treefca8861abfe4dc769a600afe7f55d8f215d924a9
parentc1943e75c729602ebf9f4a961dc7959e349fa582
RenameIndependentSubregs: Fix handling of undef tied operands

Ensure that, if updating a tied operand pair, to only update
that pair.

Differential Revision: https://reviews.llvm.org/D49052

llvm-svn: 336593
llvm/lib/CodeGen/RenameIndependentSubregs.cpp
llvm/test/CodeGen/AMDGPU/rename-independent-subregs.mir