[Mlir-commits] [mlir] [mlir][tosa] Avoid introducing int <-> float casts (PR #195882)

[Luke Hutton]

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@@ -941,6 +941,13 @@ struct NonNarrowingCastsOptimization : public OpRewritePattern<tosa::CastOp> {
                   "legal in TOSA");
     }
 
+    if (innerInputType.getElementType().isInteger() !=
+        outerOutputType.getElementType().isInteger()) {
+      return rewriter.notifyMatchFailure(
+          castOp, "integer to float and float to integer casts are not "
+                  "supported to avoid introducing illegal type combinations");
+    }
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lhutton1 wrote:

Ah yes, these are annoying cases

https://github.com/llvm/llvm-project/pull/195882