[PATCH] Remove dead labels to increase superblock scope

[Michael Matz]

Hi,

On Fri, 25 Nov 2011, Tom de Vries wrote:

> > Note that you actually can remove labels also if they are 
> > !can_delete_label_p, if you use delete_insn (which you do).  It will 
> > replace such undeletable labels by a DELETED_LABEL note.
> 
> I tried that as well but ran into these errors in rtl_verify_flow_info_1:
> ...
> libquadmath/printf/cmp.c:56:1: error: NOTE_INSN_BASIC_BLOCK is missing for block 6
> libquadmath/printf/cmp.c:56:1: error: NOTE_INSN_BASIC_BLOCK 79 in middle of
> basic block 6

Hmpf, probably bitrotted over time.  Oh well, so be it.


Ciao,
Michael.