[llvm] [RISCV] Move the rest of Zfa FLI instruction handling to lowerConstantFP. (PR #109217)

[Alex Bradbury via llvm-commits]

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@@ -5802,22 +5802,29 @@ SDValue RISCVTargetLowering::lowerConstantFP(SDValue Op,
   MVT VT = Op.getSimpleValueType();
   const APFloat &Imm = cast<ConstantFPSDNode>(Op)->getValueAPF();
 
-  if (getLegalZfaFPImm(Imm, VT) >= 0)
-    return Op;
+  // Can this constant be select by a Zfa FLI instruction?
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asb wrote:

Tiny nit: "select" -> "selected"

https://github.com/llvm/llvm-project/pull/109217