1 ; RUN: opt -loop-vectorize -scalable-vectorization=on -force-target-instruction-cost=1 -dce -instcombine < %s -S | FileCheck %s
3 target triple = "aarch64-linux-gnu"
5 ; Test a case where the vectorised induction variable is used to
7 ; for (long long i = 0; i < n; i++) {
12 define void @cond_ind64(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i64 %n) #0 {
13 ; CHECK-LABEL: @cond_ind64(
15 ; CHECK-NEXT: %[[INDEX:.*]] = phi i64 [ 0, %vector.ph ], [ %{{.*}}, %vector.body ]
16 ; CHECK: %[[STEPVEC:.*]] = call <vscale x 4 x i64> @llvm.experimental.stepvector.nxv4i64()
17 ; CHECK-NEXT: %[[TMP1:.*]] = insertelement <vscale x 4 x i64> poison, i64 %[[INDEX]], i32 0
18 ; CHECK-NEXT: %[[IDXSPLT:.*]] = shufflevector <vscale x 4 x i64> %[[TMP1]], <vscale x 4 x i64> poison, <vscale x 4 x i32> zeroinitializer
19 ; CHECK-NEXT: %[[VECIND:.*]] = add <vscale x 4 x i64> %[[IDXSPLT]], %[[STEPVEC]]
20 ; CHECK-NEXT: %[[MASK:.*]] = trunc <vscale x 4 x i64> %[[VECIND]] to <vscale x 4 x i1>
21 ; CHECK: %[[LOAD:.*]] = call <vscale x 4 x i32> @llvm.masked.load.nxv4i32.p0nxv4i32(<vscale x 4 x i32>* %{{.*}}, i32 4, <vscale x 4 x i1> %[[MASK]], <vscale x 4 x i32> poison)
22 ; CHECK: call void @llvm.masked.store.nxv4i32.p0nxv4i32(<vscale x 4 x i32> %[[LOAD]], <vscale x 4 x i32>* %{{.*}}, i32 4, <vscale x 4 x i1> %[[MASK]])
26 for.body: ; preds = %entry, %for.inc
27 %i.08 = phi i64 [ %inc, %for.inc ], [ 0, %entry ]
28 %and = and i64 %i.08, 1
29 %tobool.not = icmp eq i64 %and, 0
30 br i1 %tobool.not, label %for.inc, label %if.then
32 if.then: ; preds = %for.body
33 %arrayidx = getelementptr inbounds i32, i32* %b, i64 %i.08
34 %0 = load i32, i32* %arrayidx, align 4
35 %arrayidx1 = getelementptr inbounds i32, i32* %a, i64 %i.08
36 store i32 %0, i32* %arrayidx1, align 4
39 for.inc: ; preds = %for.body, %if.then
40 %inc = add nuw nsw i64 %i.08, 1
41 %exitcond.not = icmp eq i64 %inc, %n
42 br i1 %exitcond.not, label %exit, label %for.body, !llvm.loop !0
44 exit: ; preds = %for.inc
48 attributes #0 = { "target-features"="+sve" }
50 !0 = distinct !{!0, !1, !2, !3, !4, !5}
51 !1 = !{!"llvm.loop.mustprogress"}
52 !2 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
53 !3 = !{!"llvm.loop.vectorize.enable", i1 true}
54 !4 = !{!"llvm.loop.vectorize.width", i32 4}
55 !5 = !{!"llvm.loop.interleave.count", i32 1}