Matthias Braun 773603e851 ScheduleDAGInstrs: Ignore dependencies of constant physregs
There is no need to track dependencies for constant physregs, as they
don't change their value no matter in what order you read/write to them.

Differential Revision: https://reviews.llvm.org/D26221

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286526 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-10 23:46:44 +00:00
..