search for: target_init_builtins

Personally I would just modify the frontend - it's not that hard once you know where to look . In this case all you need to do is add the declaration of your builtin to the TARGET_INIT_BUILTINS target hook (see the gcc internals manual) defined in the gcc/config directory corresponding to your target. If the name the the declaration matches the name used with GCCBuiltin in the intrinsics td file then any calls to the gcc builtin in the source should get automatically translated to th...

As mentioned in an earlier mail, I am working on an LLVM backend for a custom processor based on MIPS. My problem is how to extend LLVM to support some esoteric/non-standard feature of the underlying hardware. I saw in the "Extending LLVM" document, that the easiest / most common way to do this was using an intrinsic function, and examples of the technique abound (all SSE for