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Re: __builtin_choose_expr
On Monday, October 10, 2011 9:16 PM, Ian Lance Taylor wrote:
The patch looks fine to me. You should move it to trunk and submit it
to gcc-patches.
Thanks for checking it for me! I have done more work on it today so that it
works correctly with templates as well. I will merge the patch now across
to trunk and check that all my test-cases still work correctly and then put
it forward to gcc-patches.
The only area which I haven't successfully managed to implement
__builting_choose_expr is in within an auto return type, for example:
template <int i>
constexpr auto test() -> decltype(__builtin_choose_expr(i, 1, 2))
{ return __builtin_choose_expr(i, 1, 2); }
GCC gives up with "sorry, unimplemented: mangling choose_expr" since I
didn't think myself qualified to make alterations to GCC in this area. In
honest, I'm not entirely sure that alterations should be necessary... but
how to solve this, I don't know.
You will probably need to sign a copyright assignment;
let me know if you want to start that process.
Yes, please, if you could point me in the right direction to do this.
Many thanks
Andy