Sorry, numbers I reported were with GHC 7.2.1, HEAD is indeed much quicker.
On 22 November 2011 01:18, Simon Marlow <[email protected]> wrote: > On 22/11/2011 07:36, David Terei wrote: >> >> Argh! I spent the weekend fixing LLVM bugs and managed to close all >> but one! I was so close to freedom. >> >> Yep can confirm. -fasm -O0 takes 30seconds on my machine, -fllvm -O0 >> takes 2 min. 1 min spent in code generator (so either bad performance >> in llvm code generator or in the llvm mangler) and 1 min in the llvm >> tools (mostly llc) so probably nothing we can do there. Haven't tried >> -O1 yet for -fllvm but -O1 -fasm takes 8min on my machine. > > Can you recheck that? -O -fasm takes 8 *seconds* here: > > '/64playpen/simonmar/nightly/HEAD-cam-04-unx/x86_64-unknown-linux/inplace/bin/ghc-stage2' > -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output > -no-user-package-conf -rtsopts -fno-ghci-history -c T3016.hs -O -fasm +RTS > -s > 3,104,745,616 bytes allocated in the heap > 829,479,400 bytes copied during GC > 79,029,208 bytes maximum residency (20 sample(s)) > 842,880 bytes maximum slop > 218 MB total memory in use (0 MB lost due to fragmentation) > > Tot time (elapsed) Avg pause Max pause > Gen 0 5969 colls, 0 par 1.51s 1.51s 0.0003s 0.0097s > Gen 1 20 colls, 0 par 1.86s 1.86s 0.0932s 0.4177s > > Parallel GC work balance: -nan (0 / 0, ideal 1) > > MUT time (elapsed) GC time (elapsed) > Task 0 (worker) : 0.00s ( 7.96s) 0.00s ( 0.00s) > Task 1 (worker) : 0.00s ( 7.99s) 0.00s ( 0.00s) > Task 2 (bound) : 3.82s ( 4.61s) 3.37s ( 3.38s) > > SPARKS: 0 (0 converted, 0 overflowed, 0 dud, 0 GC'd, 0 fizzled) > > INIT time 0.00s ( 0.00s elapsed) > MUT time 3.82s ( 4.61s elapsed) > GC time 3.37s ( 3.38s elapsed) > EXIT time 0.00s ( 0.00s elapsed) > Total time 7.20s ( 7.99s elapsed) > > > Cheers, > Simon > > > > >> Created ticket to track: http://hackage.haskell.org/trac/ghc/ticket/5652 >> >> Cheers, >> David >> >> On 21 November 2011 07:02, Simon Marlow<[email protected]> wrote: >>> >>> David, >>> >>> It looks like T3016 is running out of time with -fllvm: >>> >>> =====> T3016(optllvm) 763 of 3159 [0, 1, 0] >>> cd ./simplCore/should_compile&& >>> >>> '/64playpen/simonmar/nightly/HEAD-cam-04-unx/x86_64-unknown-linux/inplace/bin/ghc-stage2' >>> -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output >>> -no-user-package-conf -rtsopts -fno-ghci-history -c T3016.hs -O -fllvm >>>> >>>> T3016.comp.stderr 2>&1 >>> >>> Timeout happened...killing process... >>> Compile failed (status 25344) errors were: >>> >>> *** unexpected failure for T3016(optllvm) >>> >>> >>> Maybe it's hitting a bad case in the LLVM generator? This module is just >>> full of large integer constants, which ends up as a lot of top-level >>> static >>> data. >>> >>> Cheers, >>> Simon >>> > > _______________________________________________ Cvs-ghc mailing list [email protected] http://www.haskell.org/mailman/listinfo/cvs-ghc
