[PATCH] Combine location with block using block_locations

[Jakub Jelinek]

On Thu, Sep 13, 2012 at 09:33:20AM -0400, Robert Dewar wrote:
> On 9/13/2012 8:00 AM, Richard Guenther wrote:
> 
> >Because doing so would create code generation differences -g vs. -g0.
> 
> Sometimes I wonder whether the insistence on -g not changing code
> generation is warranted. In practice, gdb for me is so weak in handling

It is.  IMHO the most important reason is not that somebody would build
first with just -O2 and then later on to debug the code would build it again
with -g -O2 and hope the code is the same, but by making sure -g vs. -g0
doesn't change generate code we ensure -g doesn't pessimize the generated
code, and really many people compile even production code with -g -O2
or similar.  The debug info is then either stripped, or stripped into
separate files/not shipped or only optionally shipped with the product.

	Jakub