[PATCH] PR11706, optimize std::pow(T, int)

[Gabriel Dos Reis]

Richard Guenther <rguenth@tat.physik.uni-tuebingen.de> writes:

| The __builtin_pow variants handle constant integer exponents specially
| - they only do not dispatch to special integer versions for non-constant
| exponents.

That is a flow.  If I recall correctly, the idea is to have the
compiler handle integer powers too, be they constant or not.

-- Gaby