[llvm] [Xtensa] Implement lowering SELECT_CC, SETCC. (PR #97017)

[Sergei Barannikov via llvm-commits]

================
@@ -697,6 +718,126 @@ const char *XtensaTargetLowering::getTargetNodeName(unsigned Opcode) const {
     return "XtensaISD::PCREL_WRAPPER";
   case XtensaISD::RET:
     return "XtensaISD::RET";
+  case XtensaISD::SELECT_CC:
+    return "XtensaISD::SELECT_CC";
   }
   return nullptr;
 }
+
+//===----------------------------------------------------------------------===//
+// Custom insertion
+//===----------------------------------------------------------------------===//
+
+static int GetBranchKind(int Cond, bool &BrInv) {
----------------
s-barannikov wrote:

```suggestion
static unsigned getBranchOpcode(ISD::CondCode Cond, bool &BrInv) {
```


https://github.com/llvm/llvm-project/pull/97017