nikic wrote:

FYI I'm seeing about 0.6% compile-time regressions for `O0` test-suite builds 
with this change 
(https://llvm-compile-time-tracker.com/compare.php?from=ef2ca97f48f1aee1483f0c29de5ba52979bec454&to=18376810f359dbd39d2a0aa0ddfc0f7f50eac199&stat=instructions:u).
 Though there is also a 4.5% reduction in text size 
(https://llvm-compile-time-tracker.com/compare.php?from=ef2ca97f48f1aee1483f0c29de5ba52979bec454&to=18376810f359dbd39d2a0aa0ddfc0f7f50eac199&stat=size-text)
 so maybe the tradeoff is reasonable even for `O0`.

https://github.com/llvm/llvm-project/pull/90013
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