Austin Kerbow b0f4678b90 [AMDGPU] Add iglp_opt builtin and MFMA GEMM Opt strategy ...

Adds a builtin that serves as an optimization hint to apply specific optimized
DAG mutations during scheduling. This also disables any other mutations or
clustering that may interfere with the desired pipeline. The first optimization
strategy that is added here is designed to improve the performance of small gemm
kernels on gfx90a.

Reviewed By: jrbyrnes

Differential Revision: https://reviews.llvm.org/D132079

2022-08-19 15:38:36 -07:00

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