[llvm] [Xtensa] Implement lowering SELECT_CC/BRCC for Xtensa FP Option. (PR #145544)

[Matt Arsenault via llvm-commits]

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@@ -841,21 +847,93 @@ static unsigned getBranchOpcode(ISD::CondCode Cond) {
   }
 }
 
+static void GetFPBranchKind(ISD::CondCode Cond, unsigned &BrKind,
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arsenm wrote:

Start with lowercase 

https://github.com/llvm/llvm-project/pull/145544