#16039: 'GHC.Magic.noinline <var>' should not float out -------------------------------------+------------------------------------- Reporter: heisenbug | Owner: heisenbug Type: bug | Status: new Priority: normal | Milestone: 8.10.1 Component: Compiler | Version: 8.2.1 Resolution: | Keywords: FloatOut Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #15155 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj):
`exprIsCheapX` helped a lot
What does that mean? How did it help? Rather than doing this deep pattern matching during `exprIsCheapX` (which will happen repeatedly in an `App`-chain), I think it might be nicer (more efficient) to accumulate a list of (value) arguments instead of the `n` argument to `go`.
Check out exprIsBig too.
Maybe. But concentrate on the places where we know it makes a difference. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16039#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler