[PATCH] D107581: [LegalizeTypes] Add a simple expansion for SMULO when a libcall isn't available.

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp:4053
+        DAG.getSetCC(dl, N->getValueType(1), MulHi, SRA, ISD::SETNE);
+    SplitInteger(MulLo, Lo, Hi);
+    ReplaceValueWith(SDValue(N, 1), Overflow);
----------------
pengfei wrote:
> Seems `Lo` and `Hi` are not used?
They are output references passed to this function see line 3969.


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  https://reviews.llvm.org/D107581/new/

https://reviews.llvm.org/D107581