[Mlir-commits] [mlir] [mlir][ArmSME] Switch to an attribute-based tile allocation scheme (PR #73253)

[Cullen Rhodes]

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@@ -32,24 +32,41 @@ using namespace mlir;
 
 namespace {
 
+IntegerAttr getTileIdOrError(arm_sme::ArmSMETileOpInterface op) {
+  auto tileId = op.getTileId();
+  if (!tileId)
+    op.emitOpError(
+        "expected tile ID to be allocated before conversion to LLVM");
+  return tileId;
+}
+
+struct GetTileConversion : public ConvertOpToLLVMPattern<arm_sme::GetTileOp> {
+  using ConvertOpToLLVMPattern<arm_sme::GetTileOp>::ConvertOpToLLVMPattern;
+
+  LogicalResult
+  matchAndRewrite(arm_sme::GetTileOp getTile, OpAdaptor,
+                  ConversionPatternRewriter &rewriter) const override {
+    rewriter.replaceOpWithNewOp<arm_sme::MaterializeSSATileOp>(
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c-rhodes wrote:

Could `arm_sme.materialize_ssa_tile` be replaced with `llvm.mlir.undef`?

https://github.com/llvm/llvm-project/pull/73253