good chemistry is complicated, and a little bit messy -LW |
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The current documentation for LLVM has an example of using JIT with an existing 'C' program, without a custom front-end. I couldn't get it to work using the sample, so maybe it's not in version 3.1 - 3.2. And maybe it's a mis-print! I joined the LLVMdev list and asked that question. If and when I get an answer, I'll post either 'success' or 'failure' or whatever, but 15% improvement is nice. I'm not endorsing anything, since this is more of a learning exercise for me. IBM 'xlc' is way faster on p-series machines than 'GCC', but I gave up long ago trying to get 'C' code that was designed and tested with 'GCC' to get compiled with 'xlc'! If it's my code, then I'll go with 'xlc'. To generate a Perl 5.16.0 took half the time with 'clang' as it was to generate it with 'GCC'. And 100% of the Perl test-cases worked. For that, I'm impressed. Thank you "Well done is better than well said." - Benjamin Franklin In reply to Re^4: perllVm: A Linux test of how Perl and LLVM would work together.
by flexvault
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