[GHC] #14687: Investigate differences in Int-In/Outlining
GHC
ghc-devs at haskell.org
Fri Jan 19 10:38:01 UTC 2018
#14687: Investigate differences in Int-In/Outlining
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Reporter: AndreasK | Owner: (none)
Type: task | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 8.2.2
Keywords: | Operating System: Unknown/Multiple
Architecture: | Type of failure: None/Unknown
Unknown/Multiple |
Test Case: | Blocked By:
Blocking: | Related Tickets:
Differential Rev(s): | Wiki Page:
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In one case the numbers get floated out and in the others they stay in the
alternative.
This results in one being compiled as a CAF while the other gets recreated
on the heap.
{{{
{-# LANGUAGE MagicHash, BangPatterns, ScopedTypeVariables #-}
import GHC.Prim
import GHC.Exts
func :: Int# -> Int# -> Int
func 1# 1# = 10
func 1# 2# = 20
foo :: Int# -> Int# -> Int
foo 1# 1# = 30
foo 2# 1# = 40
}}}
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14687>
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