[Bug middle-end/51848] GCC is not able to vectorize when a constant value is also added to the sum of array expression inside a loop.

[irar at il dot ibm.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51848

Ira Rosen <irar at il dot ibm.com> changed:

           What    |Removed                     |Added
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                 CC|                            |irar at il dot ibm.com

--- Comment #2 from Ira Rosen <irar at il dot ibm.com> 2012-01-15 08:06:09 UTC 
---
We don't recognize this as reduction because we look for:

     a1 = phi < a0, a2 >
     a3 = ...
     a2 = operation (a3, a1)

and here we have

     a1 = phi < a0, a2 >
     a3 = ...
     a4 = operation (a3, a1)
     a2 = a4 + 1