On Tue, Nov 15, 2005 at 12:26:37PM +0100, Mathieu Lacage wrote:
> Out of curiosity, I wonder what gdb would use it for.

I don't have any concrete plans.  But among the things a debugger can
do with this information:

 - Display likely jump targets to the user.
 - Set breakpoints on every basic block in a function in order to trace
   execution a little more efficiently than single stepping.
 - Perhaps improve efficiency of checkpoint/restart reverse debugging.

I'm sure there's plenty more :-)

-- 
Daniel Jacobowitz
CodeSourcery, LLC

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