#7198: New codegen more than doubles compile time of T3294 -------------------------------------+------------------------------------- Reporter: simonmar | Owner: simonmar Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.4.2 (CodeGen) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #4258 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonmar): I suspect that R1 is not stable enough, but I'm not sure. You could probably find a smaller test case that fails by running the testsuite with stage=1. In any case, this probably isn't a good idea, at least in general, because if a free var is used more than once then we'll get a memory accesses to reference it each time, rather than loading it into a register. Of course if we run out of registers then it might be a good idea... but that's hard to tell at this stage (better to let the register allocator make that decision). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7198#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler