[mlir][complex] Mark all supported operation illegal explicitly for complex to libm

We can mark all supported operations illegal explicitly to ensure no convertible ops remain.

Differential Revision: https://reviews.llvm.org/D131877

Author: Lewuathe

mlir/lib/Conversion/ComplexToLibm/ComplexToLibm.cpp

@@ -131,7 +131,8 @@ void ConvertComplexToLibmPass::runOnOperation() {
   ConversionTarget target(getContext());
   target.addLegalDialect<func::FuncDialect>();
   target.addIllegalOp<complex::PowOp, complex::SqrtOp, complex::TanhOp,
-                      complex::AbsOp, complex::AngleOp>();
+                      complex::CosOp, complex::SinOp, complex::ConjOp,
+                      complex::LogOp, complex::AbsOp, complex::AngleOp>();
   if (failed(applyPartialConversion(module, target, std::move(patterns))))
     signalPassFailure();
 }