Re: Trying to understand linearized output

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On Sun, Mar 12, 2017 at 02:11:37PM +0000, Dibyendu Majumdar wrote:
> ...
>
> My question is:
> 
> phisrc.64   %phi98(current) <- %r333
> 
> The phi98 above is presumably referencing a pseudo which has number
> 98. But this is not part of this function, so I am confused. Does this
> look right?

I didn't checked all the details by it looks right.

The %phi98 is not referencing a pseudo which has the number 98.
It is a pseudo numbered 98 and which is of type PSEUDO_PHI.
Those kind of pseudos are exclusively created by 'phisrc' instructions
and used by 'phi' instructions.
Here this %phi98 is used by the phi instructions at block .L127

These 'phi' instructions are the core of the SSA representation of
intermediate code. If needed Wikipedia gives a good introduction:
	 https://en.wikipedia.org/wiki/Static_single_assignment_form

-- Luc Van Oostenryck
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