Fixed outer reduction bug when tiling.

Author: chriselrod

Project.toml

@@ -1,7 +1,7 @@
 name = "LoopVectorization"
 uuid = "bdcacae8-1622-11e9-2a5c-532679323890"
 authors = ["Chris Elrod <[email protected]>"]
-version = "0.2.1"
+version = "0.2.2"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"

src/lowering.jl

@@ -369,7 +369,7 @@ function lower_compute!(
     for u ∈ 0:Uiter
         instrcall = callfun(instr) # Expr(:call, instr)
         varsym = if tiledouterreduction > 0 # then suffix !== nothing
-            modsuff = ((u+suffix*U) & 3)
+            modsuffix = ((u + suffix*U) & 3)
             Symbol("##",var,:_, modsuffix)
         elseif opunrolled
             Symbol("##",var,:_,u)
@@ -896,7 +896,7 @@ function lower_tiled(ls::LoopSet, vectorized::Symbol, U::Int, T::Int)
         firstiter = false
     end
     q = gc_preserve(ls, q)
-    reduce_expr!(q, ls, U)
+    reduce_expr!(q, ls, 4)
     Expr(:block, ls.preamble, q)
 end
 function lower_unrolled(ls::LoopSet, vectorized::Symbol, U::Int)