I'm (slowly) changing code to take explicit advantage of SSEs. Most of the vectorizable statements I have in a program I'm working on are not be vectorized. The compiler is issue this message (along with hundreds of others like it) in it's optimization report:
1>C:\\NewRT\\Rendering3\\RenderingWithBeamCasting 2Dblocking.f90(5707): (col. 10) remark: loop was not vectorized: nonstandard loop is not a vectorization candidate.
The pertinent code is:
! DEC$ ATTRIBUTES ALIGN: 128:: VprojectedPerpEdge
! DEC$ ATTRIBUTES ALIGN: 128:: SqMagPerpEdge
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real(4):: VprojectedPerpEdge(4,4), &
SqMagPerpEdge(4), &
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5705 SqMagPerpEdge = VprojectedPerpEdge(:,1)*VprojectedPerpEdge(:,1) + & VprojectedPerpEdge(:,2)*VprojectedPerpEdge(:,2)
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I reserve the right to be making a silly mistake, but can anyone suggest what's wrong? This happens even if I put compiler directives to explicitly vectorize this code. Strangely, this identical process works in another (much smaller) program that I've already vectorized.
David
