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Hi, it makes no sense to transform the testcase in this PR: the size of the data processed by the loop is small enough to be in the L1 cache. This patch fixes the PR by tuning the profitability function. Okay for trunk after regstrap? This patch does NOT fix the problem itself, because that would be to rewrite a major part of the perfect_nestify HACK: I'm tired to tweak this function that should be replaced by a correct loop distribution. If you really want to know what this function produces, it's scarry, but anyway, from: do i=1,6 do j=1,6 gr(i,j)=0.d0 enddo if(i.le.3) then gr(i,i)=1.d0 else gr(i,i)=0.5d0 endif enddo perfect_nestify transforms this code into: do i=1,6 do j=1,6 gr(i,j)=0.d0 enddo enddo do i=1,6 gr(i,i)=1.d0 gr(i,i)=0.5d0 enddo Yes, that's just removing the condition, and also other incredible things... that end on the ICE. -- Sebastian AMD - GNU Tools
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