[LLVMdev] LLVM inquiry
baldrick at free.fr
Wed Jun 25 12:27:37 PDT 2008
> 1) What is the status of fortran/llvm-gfortran in the context of LLVM?
> Are there any plans to support fortran?
gfortran works pretty well. You'll have to build it from the llvm-gcc
source yourself though (you need to add fortran to the --enable-languages
list). There are some known bugs, which are most of the llvm bugs with
numbers from 2441 to 2450. I don't know if it builds on the mac.
> 2) Are you planning to use the GCC-based front-end in the long-term
> or is that just temporary?
No one has volunteered to write a clang-like front-end for Fortran yet,
so it's just llvm-gfortran for the moment.
> 3) Are there any performance numbers available comparing with standard
Yes, see http://lists.cs.uiuc.edu/pipermail/llvmdev/2008-June/015441.html
The conclusion is that llvm-gfortran is on the whole a bit slower than
There are some Fortran programs in the llvm testsuite but currently they
are compiled using g2c followed by llvm-gcc (C front-end) IIRC, rather
than using llvm-gfortran. It would be great if someone could tweak the
testsuite to use llvm-gfortran if it is available.
I hope this helps.
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