To see the benefit of some optimization passes in LLVM for certain architectures, I'd like to compile C or C++ code for a target where a C compiler (SDCC) already exists.
I guess the easiest way would be to use clang -S -emit-llvm then the optimization passes then the C backend (probably much easier than writing code to translate LLVM IR to SDCC iCode). There is a version of the C backend on GitHub for LLVM 3.7. I have looked at the output from that, and guess that with a few small fixes to make the C backend emit something more like proper C (instead of GCC/MSVC-isms) it should be useable with SDCC. But clang needs to know about the sizes and alignment of the C types (after all I don't want my int to become an expensive 32-bit wide 32-bit aligned thing inside clang). Is there an easy way to do so? Philipp _______________________________________________ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
