adams381 wrote:

Addressed @bcardosolopes's feedback about the expensive AST visitor walk.

**Changes in commit 0f7052857adf:**
- Added `hasEmittedBuiltinCall` flag to `CIRGenFunction` that gets set when 
`emitBuiltinExpr` is called
- Updated `setCIRFunctionAttributesForDefinition` to accept this flag instead 
of walking the AST
- Removed the `BuiltinCallFinder` visitor (37 lines) and replaced with a simple 
boolean check
- Removed the now-unused `StmtVisitor.h` include

This changes the builtin detection from O(n) AST traversal to O(1) flag check, 
set during the normal codegen process.

https://github.com/llvm/llvm-project/pull/175233
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