everton.constantino added a comment. @fhahn That was my first idea however its not as simple as it looks. I tried moving the adds but splats make it considerably harder to find a pattern that catches this and fuses the multiplies specially with bigger matrices. My real wish was to actually add a new IR instruction to handle matrices because the MADD is but a simple example of other more interesting optimizations that can be done, like using matrix associative properties to reduce the number of calculations. I found that path too complicated however and I opted for a compromise at the moment. I wish to start writing some GEMM micro-kernels with this extension and this builtin was the shortest path.
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