[Bug debug/47620] [4.6 Regression] Profiledbootstrap failure on powerpc-linux

[aoliva at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47620

Alexandre Oliva <aoliva at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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  Attachment #23317|0                           |1
        is obsolete|                            |

--- Comment #14 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2011-02-17 21:33:45 UTC ---
Created attachment 23390
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23390
Patch that kills the bug harder

It turns out that deps from other blocks wouldn't always have tick 0, and debug
insns other than the first could have deps other than their immediate preds,
that would cause them to be queue for a later tick as well.  But then, why
bother?  If all dependencies of a debug insns are met, just add it to the ready
set, without even computing the tick it would get from its deps.  Like this
patch, that supersedes the earlier on.  Jakub, can you give it a spin on the
affected platforms, please?  I'm bootstrapping it on x86_64-linux-gnu and
i686-linux-gnu now.