{
  "$type": "site.standard.document",
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  "path": "/t/should-pgo-automatically-compile-hot-code-o3-and-cold-code-oz/24401#post_5",
  "publishedAt": "2026-06-19T07:29:31.000Z",
  "site": "https://internals.rust-lang.org",
  "tags": [
    "Should PGO automatically compile hot code O3 and cold code Os? - IR & Optimizations - LLVM Discussion Forums"
  ],
  "textContent": "Apparently \"There is already an LLVM option to do this (`-mllvm -pgo-cold-func-opt=optsize`, or `minsize` for -Oz behavior).\" -- Should PGO automatically compile hot code O3 and cold code Os? - IR & Optimizations - LLVM Discussion Forums",
  "title": "Should PGO automatically compile hot code O3 and cold code Oz?"
}