[PATCH] Fix optnone on Windows

[Robinson, Paul]

ping.

> -----Original Message-----
> From: Robinson, Paul
> Sent: Sunday, October 26, 2014 9:23 PM
> To: Robinson, Paul; llvm-commits at cs.uiuc.edu
> Subject: RE: [PATCH] Fix optnone on Windows
> 
> Ping.
> 
> > -----Original Message-----
> > From: llvm-commits-bounces at cs.uiuc.edu [mailto:llvm-commits-
> > bounces at cs.uiuc.edu] On Behalf Of Robinson, Paul
> > Sent: Monday, October 20, 2014 3:55 PM
> > To: llvm-commits at cs.uiuc.edu
> > Subject: [PATCH] Fix optnone on Windows
> >
> > [PATCH] Fix optnone on Windows
> >
> > Normally an 'optnone' function goes through fast-isel, which does not
> > call DAGCombiner.  But we ran into a case (on Windows) where the
> > calling convention causes argument lowering to bail out of fast-isel,
> > and we end up in CodeGenAndEmitDAG() which does run DAGCombiner.
> > So, we need to make DAGCombiner check for 'optnone' after all.
> >
> > Along the way we discovered we hadn't committed all the tests we had
> > written for 'optnone' so here are two more. 'fastmath-optnone.ll' is
> > the test that caught this, 'optnone-simple.ll' is one we missed from
> > our original implementation.
> > Thanks,
> > --paulr

-------------- next part --------------
A non-text attachment was scrubbed...
Name: optnone-dag.patch
Type: application/octet-stream
Size: 5790 bytes
Desc: optnone-dag.patch
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20141103/afe72cae/attachment.obj>