1 ; RUN: opt -S -loop-vectorize < %s | FileCheck %s
2 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
4 ; Check that we vectorize only bottom-tested loops.
5 ; This is a reduced testcase from PR21302.
7 ; rdar://problem/18886083
9 %struct.X = type { i32, i16 }
11 ; CHECK-NOT: vector.body
13 define void @foo(i32 %n) {
18 %i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
19 %cmp = icmp slt i32 %i, %n
20 br i1 %cmp, label %for.body, label %if.end
23 %iprom = sext i32 %i to i64
24 %b = getelementptr inbounds %struct.X, %struct.X* undef, i64 %iprom, i32 1
25 store i16 0, i16* %b, align 4
26 %inc = add nsw i32 %i, 1