[llvm] [LMI] Support non-power-of-2 types for the matmul remainder (PR #163987)

[Jon Roelofs via llvm-commits]

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@@ -97,6 +97,11 @@ static cl::opt<MatrixLayoutTy> MatrixLayout(
 static cl::opt<bool> PrintAfterTransposeOpt("matrix-print-after-transpose-opt",
                                             cl::init(false));
 
+static cl::opt<bool> SplitMatmulRemainder(
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jroelofs wrote:

If you make this a threshold instead of a boolean, I think it would be a little better for both the test and "what if"-type experimentation.

https://github.com/llvm/llvm-project/pull/163987