[llvm] [Matrix][IR] Cap stride bitwidth at 64 (PR #163729)

[Florian Hahn via llvm-commits]

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@@ -6479,9 +6479,12 @@ void Verifier::visitIntrinsicCall(Intrinsic::ID ID, CallBase &Call) {
               NumRows->getZExtValue() * NumColumns->getZExtValue(),
           "Result of a matrix operation does not fit in the returned vector!");
 
-    if (Stride)
+    if (Stride) {
+      Check(Stride->getBitWidth() <= 64, "Stride bitwidth cannot exceed 64!",
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fhahn wrote:

Yes, in practice on targets with 32 bit index width (or lower), it may be smaller, matching the index width 

https://github.com/llvm/llvm-project/pull/163729