[Edinburgh-pm] DaliBug

Miles Gould miles at assyrian.org.uk
Mon Aug 2 04:36:52 PDT 2010


On Sat, Jul 31, 2010 at 07:20:23PM +0100, Aaron Crane wrote:
> Here's a random guess: there's a compiler bug which is present at all
> optimisation levels, but happens to be hidden by an optimisation
> enabled at -O2 — perhaps an IR structure that's mishandled is only
> ever present at -O1 or -O0, because -O2 changes the underlying code to
> something else first.

It turns out that all IR opcodes present in the "bad" version are also
present in the "good" version...

p_q

Miles

-- 
It is better to be deprived of food for three days than of tea for one.
  -- Confucius


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