================
@@ -664,50 +680,139 @@ void mlirTypeConverterAddConversion(
});
}
+void mlirTypeConverterConversionResultsAppend(
+ MlirTypeConverterConversionResults results, MlirType type) {
+ static_cast<SmallVectorImpl<Type> *>(results.ptr)->push_back(unwrap(type));
+}
+
+void mlirTypeConverterAdd1ToNConversion(
+ MlirTypeConverter typeConverter,
+ MlirTypeConverter1ToNConversionCallback convertType, void *userData) {
+ unwrap(typeConverter)
+ ->addConversion(
+ [convertType, userData](Type type, SmallVectorImpl<Type> &results)
+ -> std::optional<LogicalResult> {
+ size_t numPriorResults = results.size();
+ MlirTypeConverterConversionResults wrappedResults{&results};
+ MlirLogicalResult result =
+ convertType(wrap(type), wrappedResults, userData);
+ if (mlirLogicalResultIsFailure(result)) {
+ // The callback declined. Restore any types it appended so the
+ // driver's "try the next conversion" invariant holds (a
declining
+ // conversion function must not mutate `results`).
+ results.truncate(numPriorResults);
+ return std::nullopt;
+ }
+ return success();
----------------
makslevental wrote:
@kuhar what do you think? I know we try to preserve C API, and this one is
about ~6 months since landed, but I suspect no one is [using
it](https://sourcegraph.com/search?q=context:global+MlirTypeConverterConversionCallback&patternType=keyword&sm=0).
https://github.com/llvm/llvm-project/pull/208935
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