[PATCH] D50791: [SelectionDAG] unroll unsupported vector FP ops earlier to avoid libcalls on undef elements (PR38527)

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


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Comment at: lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp:2445
+    EVT VT = N->getValueType(0);
+    EVT WideVecVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+    if (TLI.isOperationExpand(N->getOpcode(), WideVecVT) &&
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I think you need to call TLI.getRegisterType() rather than getTypeToTransformTo()?  Consider what happens to, for example, `<5 x f32>` on AArch64.


https://reviews.llvm.org/D50791