Fix choosing unroll factor in absense of load.

chriselrod · chriselrod · commit 964ae0d2baa8 · 2020-07-22T23:16:54.000-04:00
diff --git a/src/determinestrategy.jl b/src/determinestrategy.jl
@@ -230,6 +230,8 @@ function unroll_no_reductions(ls, order, vectorized)
         max(1, VectorizationBase.nextpow2( min( 4, round(Int, 8 / compute_rt) ) ))
     elseif iszero(compute_rt)
         4
+    elseif iszero(load_rt)
+        iszero(store_rt) ? 4 : max(1, min(4, round(Int, 2compute_rt / store_rt)))
     else
         max(1, min(4, round(Int, 2compute_rt / load_rt)))
     end

Original file line number	Diff line number	Diff line change
`@@ -230,6 +230,8 @@ function unroll_no_reductions(ls, order, vectorized)`
`230`	`230`	`max(1, VectorizationBase.nextpow2( min( 4, round(Int, 8 / compute_rt) ) ))`
`231`	`231`	`elseif iszero(compute_rt)`
`232`	`232`	`4`
	`233`	`+ elseif iszero(load_rt)`
	`234`	`+ iszero(store_rt) ? 4 : max(1, min(4, round(Int, 2compute_rt / store_rt)))`
`233`	`235`	`else`
`234`	`236`	`max(1, min(4, round(Int, 2compute_rt / load_rt)))`
`235`	`237`	`end`