[PATCH] Fix remaining issue in PR15355

[Michael Liao]

Hi All,

Here is the revised patch following Jacob's suggestion on EFLAGS
propagation.

Thanks for review
- Michael

On Wed, 2013-03-06 at 09:30 -0800, Michael Liao wrote:
> Ping. - Michael
> 
> On Tue, 2013-03-05 at 18:54 -0800, Michael Liao wrote:
> > Hi All,
> > 
> > The attached patch fixes a remaining issue after fixing PR15355. When
> > CMOV is not available, the phi node created in advanced needs replacing
> > with a new one. One of that Phi node's BB operand creating these
> > operands will be changed after lowering CMOV into branches. The attached
> > patch fixes them by replacing these phi nodes and adds a workaround for
> > machine code verifier.
> > 
> > BTW, it seems X86 attributes (e.g. -mattr=+cmov) is not properly
> > propagated in non-x86 builds, quite weird. I have no way to verify them
> > on these builds but could only verify it with '-attr=-cmov' on X86
> > build. Please let me immediately if any non-X86 builds still fail with
> > this patch.
> > 
> > Thanks for your review
> > - Michael
> > 
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