Incorrect use of anti-dependency to order instructions in the DFA scheduler

[Richard Henderson]

On Thu, Sep 01, 2005 at 11:12:51AM +0100, Daniel Towner wrote:
> Why is an anti-dependence used to enforce the ordering of the branch and 
> the subsequent instruction?

Because gcc doesn't target true vliw machines, and given strict
program ordering of insn, anti-dependence is correct.

> ... and if I changed it, would this break other ports?

Yes.

You need to be special-casing branches in your backend's bundling hooks.


r~