AMDGPU: Fix crash when scheduling non-memory SMRD instructions

Summary: Fixes piglit spec/arb_shader_clock/execution/*

Reviewers: arsenm

Subscribers: kzhuravl, wdng, yaxunl, dstuttard, tpr, llvm-commits, t-tye

Differential Revision: https://reviews.llvm.org/D32345

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301191 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed