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

[Andy Kaylor via cfe-commits]

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@@ -442,6 +457,25 @@ class CIRGenFunction : public CIRGenTypeCache {
   mlir::LogicalResult emitDeclStmt(const clang::DeclStmt &s);
   LValue emitDeclRefLValue(const clang::DeclRefExpr *e);
 
+  /// Emit an if on a boolean condition to the specified blocks.
+  /// FIXME: Based on the condition, this might try to simplify the codegen of
+  /// the conditional based on the branch. TrueCount should be the number of
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andykaylor wrote:

OK, so the comment here is basically saying we should consider performing the simplifications that are performed in the classic codegen. @Andres-Salamanca Can you reword the comment to reflect that? You should removed the sentence about TrueCount.

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