[PATCH] Fix -fcrossjumping at -O1 (PR rtl-optimization/48156)

[Paolo Bonzini]

On Fri, Mar 18, 2011 at 17:23, Kenneth Zadeck <zadeck@naturalbridge.com> wrote:
> I believe that this is not the right way to go.
>
> if someone specifies -fcrossjumping, then the pass should turn on live for
> the duration of the pass just as ifcvt does.    If they ask for crossjumping
> you should give them crossjumping and not some crippled version of it.

Then we should have both patches, but df_lr is not always being used
as a fallback for df_live, and that is a bug.

Paolo