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...; file. > > 4) Create and edit gcc/my-builtins.def > > The file gcc/builtin-types.def lists the macros you can use to > declare the function types for your macros, and > gcc/builtin-attrs.def lists the attributes, though I've only ever > used ATTR_NOTHROW_LIST. > > a) Use the macro you defined earlier to generate your builtins, in > our example case it is > > DEF_MY_BUILTIN (BUILT_IN_MY_FOO, "my_foo", \ > BT_FN_PTR_PTRPTR_PTR, ATTR_NOTHROW_LIST) > > This is straightforward, the first parameter is a...

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