[llvm] [SelectionDAG] Expand fixed point multiplication into libcall (PR #79352)

[Bevin Hansson via llvm-commits]

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@@ -4008,44 +4008,7 @@ void DAGTypeLegalizer::ExpandIntRes_MUL(SDNode *N,
     LC = RTLIB::MUL_I128;
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bevin-hansson wrote:

The surrounding libcall code here looks like what ForceExpandMUL already does. Could this be removed and all replaced with just the call to ForceExpandMUL?

https://github.com/llvm/llvm-project/pull/79352