Simon Peyton Jones pushed to branch wip/26543 at Glasgow Haskell Compiler / GHC

Commits:

• 43b75476
  by Simon Peyton Jones at 2025-12-13T17:32:07+00:00

  Add comment to test
  

1 changed file:

• testsuite/tests/perf/compiler/T5030.hs

Changes:

 {-# LANGUAGE TypeFamilies, GADTs, EmptyDataDecls, FlexibleContexts #-}

 {-# LANGUAGE UndecidableInstances #-}

+-- Almost all compile time is in coercion optimisation!

+--   -O0 -fno-coercion-opt    372M alloc

+--   -O0 -fcoercion-opt      1600M alloc

+

 module SlowComp where

 import Control.Monad