| ; RUN: opt -S -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -instsimplify -simplifycfg < %s | FileCheck %s | |
| ; Note: -instsimplify -simplifycfg remove the (now dead) original loop, making | |
| ; it easy to test that the llvm.loop.unroll.disable hint is still present. | |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" | |
| ; Function Attrs: norecurse nounwind uwtable | |
| define void @foo(i32* nocapture %b) #0 { | |
| entry: | |
| br label %for.body | |
| for.cond.cleanup: ; preds = %for.body | |
| ret void | |
| for.body: ; preds = %for.body, %entry | |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] | |
| %arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv | |
| store i32 1, i32* %arrayidx, align 4 | |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 | |
| %exitcond = icmp eq i64 %indvars.iv.next, 16 | |
| br i1 %exitcond, label %for.cond.cleanup, label %for.body, !llvm.loop !0 | |
| } | |
| ; CHECK-LABEL: @foo | |
| ; CHECK: = !{!"llvm.loop.unroll.disable"} | |
| attributes #0 = { norecurse nounwind uwtable } | |
| !0 = distinct !{!0, !1} | |
| !1 = !{!"llvm.loop.unroll.disable"} |