[llvm] [RISCV] Expand constant multiplication for targets without M extension (PR #137195)

[Sam Elliott via llvm-commits]

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@@ -15447,20 +15584,23 @@ static SDValue expandMul(SDNode *N, SelectionDAG &DAG,
   if (DAG.getMachineFunction().getFunction().hasMinSize())
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lenary wrote:

I wonder if this should be `hasOptSize` (Os and Oz) rather than `hasMinSize` (just Oz). I'm not sure when one of these is chosen instead of the other.

https://github.com/llvm/llvm-project/pull/137195