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

[Adam Nemet 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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anemet wrote:

Good idea!  See the additional commit.

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