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Re: [RFC] type promotion pass
On Fri, 15 Sep 2017, Richard Biener wrote:
> IIRC the last time we went over this patch I concluded a better first
> step would be to expose call ABI details on GIMPLE much earlier. But I
> may misremember here.
Some call details are exposed in the front ends (see
targetm.calls.promote_prototypes called from c-typeck.c, for example). I
think that's too early; the front end should be generating IR for calls
that reflects the language semantics, and architecture details should be
exposed later (quite likely on GIMPLE).
Joseph S. Myers