[pypy-dev] Re: [pypy-svn] r13583 - in pypy/dist/pypy/translator/llvm2: . test
hpk at trillke.net
Sun Jun 19 14:17:22 CEST 2005
On Sun, Jun 19, 2005 at 12:20 +0200, Armin Rigo wrote:
> On Sat, Jun 18, 2005 at 06:28:30PM +0200, cfbolz at codespeak.net wrote:
> > - added flow graph transform remove_same_as, because same_as is
> > incompatible with SSA in LLVM.
> I'm not sure I see why 'same_as' is incompatible with LLVM? It's not an
> "assignment" operation, it's just an operation that creates a new result
> variable just like all the other ones. The optimization is nice,
Basically LLVM does not support a generic
x1 = x2
and we couldn't think of a way to tweak some equivalent.
Previously, Carl used e.g. 'x1 = add int 0, x2' but we
thought we just want to get rid of the problem.
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