[clang] [CIR] Add if statement support (PR #134333)

[Bruno Cardoso Lopes via cfe-commits]

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@@ -135,6 +135,55 @@ mlir::Location CIRGenFunction::getLoc(mlir::Location lhs, mlir::Location rhs) {
   return mlir::FusedLoc::get(locs, metadata, &getMLIRContext());
 }
 
+bool CIRGenFunction::ContainsLabel(const Stmt *s, bool ignoreCaseStmts) {
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bcardosolopes wrote:

this should be camelBack -> `containsLabel`, similar for anything else introduced in this PR

https://github.com/llvm/llvm-project/pull/134333