[llvm] [Xtensa] Implement Xtensa Floating Point Option. (PR #136086)

[Matt Arsenault via llvm-commits]

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@@ -815,6 +936,21 @@ SDValue XtensaTargetLowering::LowerImmediate(SDValue Op,
   return Op;
 }
 
+SDValue XtensaTargetLowering::LowerImmediateFP(SDValue Op,
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arsenm wrote:

This is the same as the default expansion?

https://github.com/llvm/llvm-project/pull/136086