A little warning in GMP.h

[Torbjorn Granlund]

Brian Hurt <bhurt at spnz.org> writes:

  Another comment I'll make is that the cost of a branch is a function of 
  how predictable it is.  A correctly predicted branch is very cheap- a 
  clock cycle or two at worst.  It's a mispredicted branch which is 
  expensive.
  
Yes, but eliminating even a very predictable branch has the
advantage of expanding basic blocks, and thereby facilitate
scheduling and other optimizations.

-- 
Torbjörn