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1; RUN: opt < %s -O2 -force-vector-interleave=2 -force-vector-width=4 -debug-only=loop-vectorize -S 2>&1 | FileCheck %s2; REQUIRES: asserts3 4; CHECK: LV: Checking a loop in 'foo'5; CHECK: LV: Loop hints: force=enabled6 7target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"8 9; Ensure that "llvm.loop.vectorize.enable" metadata was not lost even10; if loop was not rotated.11;12; See http://reviews.llvm.org/D3348 for details.13;14; CHECK-LABEL: @foo15; CHECK: !llvm.loop !016; CHECK: !0 = distinct !{!0, !1}17; CHECK: !1 = !{!"llvm.loop.vectorize.enable", i1 true}18define i32 @foo(i32 %a) {19entry:20 br label %loop_cond21 22loop_cond:23 %indx = phi i32 [ 1, %entry ], [ %inc, %loop_inc ]24 %cmp = icmp ne i32 %indx, %a25 br i1 %cmp, label %return, label %loop_inc26 27loop_inc:28 %inc = add i32 %indx, 129 br label %loop_cond, !llvm.loop !030 31return:32 ret i32 033}34 35!0 = !{!0, !1}36!1 = !{!"llvm.loop.vectorize.enable", i1 true}37