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authorSebastian Graf <sebastian.graf@kit.edu>2019-02-07 15:34:07 +0100
committerMarge Bot <ben+marge-bot@smart-cactus.org>2019-04-30 20:23:21 -0400
commit014ed644eea9037427c1ebeaac16189b00f9dbc7 (patch)
tree4e41d1183e559e81a0fbdb1cf9c16fae0448ee43 /ghc.mk
parent1abb76ab8e32e7be224631506201d1beec62a5c2 (diff)
downloadhaskell-014ed644eea9037427c1ebeaac16189b00f9dbc7.tar.gz
Compute demand signatures assuming idArity
This does four things: 1. Look at `idArity` instead of manifest lambdas to decide whether to use LetUp 2. Compute the strictness signature in LetDown assuming at least `idArity` incoming arguments 3. Remove the special case for trivial RHSs, which is subsumed by 2 4. Don't perform the W/W split when doing so would eta expand a binding. Otherwise we would eta expand PAPs, causing unnecessary churn in the Simplifier. NoFib Results -------------------------------------------------------------------------------- Program Allocs Instrs -------------------------------------------------------------------------------- fannkuch-redux +0.3% 0.0% gg -0.0% -0.1% maillist +0.2% +0.2% minimax 0.0% +0.8% pretty 0.0% -0.1% reptile -0.0% -1.2% -------------------------------------------------------------------------------- Min -0.0% -1.2% Max +0.3% +0.8% Geometric Mean +0.0% -0.0%
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