1 ; RUN: opt -S -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -instsimplify -simplifycfg < %s | FileCheck %s 2 ; Note: -instsimplify -simplifycfg remove the (now dead) original loop, making 3 ; it easy to test that the llvm.loop.unroll.disable hint is still present. 4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 target triple = "x86_64-unknown-linux-gnu" 6 7 ; Function Attrs: norecurse nounwind uwtable 8 define void @foo(i32* nocapture %b) #0 { 9 entry: 10 br label %for.body 11 12 for.cond.cleanup: ; preds = %for.body 13 ret void 14 15 for.body: ; preds = %for.body, %entry 16 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 17 %arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv 18 store i32 1, i32* %arrayidx, align 4 19 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 20 %exitcond = icmp eq i64 %indvars.iv.next, 16 21 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !llvm.loop !0 22 } 23 24 ; CHECK-LABEL: @foo 25 ; CHECK: = !{!"llvm.loop.unroll.disable"} 26 27 attributes #0 = { norecurse nounwind uwtable } 28 29 !0 = distinct !{!0, !1} 30 !1 = !{!"llvm.loop.unroll.disable"} 31
