#5030: Slow type checking of type-level computation heavy code.
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Reporter: thesz | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 7.2.1
Component: Compiler (Type checker) | Version: 7.0.2
Resolution: | Keywords:
Os: Unknown/Multiple | Architecture: x86
Failure: Compile-time performance bug | Difficulty: Unknown
Testcase: T5030 | Blockedby:
Blocking: | Related:
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Comment(by simonpj@…):
commit 902a8632c627304bc553557c21263c591ae63428
{{{
Author: Simon Peyton Jones <simo...@microsoft.com>
Date: Tue Oct 2 09:20:53 2012 +0100
Improve (and simplify) the short-circuiting of Refl coercions
The constraint solver sometimes goes to a lot of effort that turns
out to be Refl in the end, and avoiding zonking those proofs is a
useful optimisation. (Trac #5030)
compiler/typecheck/TcHsSyn.lhs | 45
+++++++++++++++------------------------
1 files changed, 17 insertions(+), 28 deletions(-)
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5030#comment:10>
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