1; RUN: opt -S -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -enable-interleaved-mem-accesses=true < %s 2 3; Make sure the vectorizer can handle this loop: The strided load is only used 4; by the loop's exit condition, which is not vectorized, and is therefore 5; considered uniform while also forming an interleave group. 6 7%0 = type { i32 ()*, i32 } 8 9@0 = internal unnamed_addr constant [59 x %0] [%0 zeroinitializer, 10%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 11%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 12%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 13%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 14%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 15%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 16%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 17%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 18%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 19%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 20%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 21%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 22%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 23%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 24%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 25%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 26%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 27%0 {i32 ()* null, i32 258}, %0 zeroinitializer, %0 zeroinitializer, 28%0 zeroinitializer, %0 zeroinitializer, %0 zeroinitializer, 29%0 zeroinitializer], align 8 30 31define dso_local void @test_dead_load(i32 %arg) { 32; CHECK-LABEL: @test_dead_load( 33; CHECK: vector.body: 34; CHECK: %wide.vec = load <16 x i32>, <16 x i32>* %3, align 8 35; CHECK: %strided.vec = shufflevector <16 x i32> %wide.vec, <16 x i32> undef, <4 x i32> <i32 0, i32 4, i32 8, i32 12> 36bb1: 37 br label %bb2 38 39bb2: 40 %tmp = phi %0* [ %tmp6, %bb2 ], [ getelementptr inbounds ([59 x %0], [59 x %0]* @0, i64 0, i64 0), %bb1 ] 41 %tmp3 = getelementptr inbounds %0, %0* %tmp, i64 0, i32 1 42 %tmp4 = load i32, i32* %tmp3, align 8 43 %tmp5 = icmp eq i32 %tmp4, 258 44 %tmp6 = getelementptr inbounds %0, %0* %tmp, i64 1 45 br i1 %tmp5, label %bb65, label %bb2 46 47bb65: 48 unreachable 49} 50