AMDGPU: IMPLICIT_DEFs and DBG_VALUEs do not contribute to wait states
Summary:
This fixes a bug that was exposed on gfx9 in various
GL45-CTS.shaders.loops.*_iterations.select_iteration_count_fragment tests,
e.g. GL45-CTS.shaders.loops.do_while_uniform_iterations.select_iteration_count_fragment
Reviewers: arsenm
Subscribers: kzhuravl, wdng, yaxunl, dstuttard, tpr, t-tye, llvm-commits
Differential Revision: https://reviews.llvm.org/D36193
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312337
91177308-0d34-0410-b5e6-
96231b3b80d8