Tom Stellard 1f520e5c98 AMDGPU/SI: Use the hazard recognizer to break SMEM soft clauses ...

Summary:
Add support for detecting hazards in SMEM soft clauses, so that we only
break the clauses when necessary, either by adding s_nop or re-ordering
other alu instructions.

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D18870

llvm-svn: 268260

2016-05-02 17:39:06 +00:00

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