1 ; RUN: opt -loop-vectorize -scalable-vectorization=on -force-target-instruction-cost=1 -force-target-supports-scalable-vectors -dce -instcombine < %s -S | FileCheck %s
3 ; Test that we can add on the induction variable
4 ; for (long long i = 0; i < n; i++) {
7 ; with an unroll factor (interleave count) of 2.
9 define void @add_ind64_unrolled(i64* noalias nocapture %a, i64* noalias nocapture readonly %b, i64 %n) {
10 ; CHECK-LABEL: @add_ind64_unrolled(
13 ; CHECK-NEXT: %[[INDEX:.*]] = phi i64 [ 0, %vector.ph ], [ %{{.*}}, %vector.body ]
14 ; CHECK-NEXT: %[[STEPVEC:.*]] = call <vscale x 2 x i64> @llvm.experimental.stepvector.nxv2i64()
15 ; CHECK-NEXT: %[[TMP1:.*]] = insertelement <vscale x 2 x i64> poison, i64 %[[INDEX]], i32 0
16 ; CHECK-NEXT: %[[IDXSPLT:.*]] = shufflevector <vscale x 2 x i64> %[[TMP1]], <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
17 ; CHECK-NEXT: %[[VECIND1:.*]] = add <vscale x 2 x i64> %[[IDXSPLT]], %[[STEPVEC]]
18 ; CHECK-NEXT: %[[VSCALE:.*]] = call i64 @llvm.vscale.i64()
19 ; CHECK-NEXT: %[[EC:.*]] = shl i64 %[[VSCALE]], 1
20 ; CHECK-NEXT: %[[TMP2:.*]] = insertelement <vscale x 2 x i64> poison, i64 %[[EC]], i32 0
21 ; CHECK-NEXT: %[[ECSPLT:.*]] = shufflevector <vscale x 2 x i64> %[[TMP2]], <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
22 ; CHECK-NEXT: %[[TMP3:.*]] = add <vscale x 2 x i64> %[[ECSPLT]], %[[STEPVEC]]
23 ; CHECK-NEXT: %[[VECIND2:.*]] = add <vscale x 2 x i64> %[[IDXSPLT]], %[[TMP3]]
24 ; CHECK: %[[LOAD1:.*]] = load <vscale x 2 x i64>
25 ; CHECK: %[[LOAD2:.*]] = load <vscale x 2 x i64>
26 ; CHECK: %[[STOREVAL1:.*]] = add nsw <vscale x 2 x i64> %[[LOAD1]], %[[VECIND1]]
27 ; CHECK: %[[STOREVAL2:.*]] = add nsw <vscale x 2 x i64> %[[LOAD2]], %[[VECIND2]]
28 ; CHECK: store <vscale x 2 x i64> %[[STOREVAL1]]
29 ; CHECK: store <vscale x 2 x i64> %[[STOREVAL2]]
34 for.body: ; preds = %entry, %for.body
35 %i.08 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
36 %arrayidx = getelementptr inbounds i64, i64* %b, i64 %i.08
37 %0 = load i64, i64* %arrayidx, align 8
38 %add = add nsw i64 %0, %i.08
39 %arrayidx1 = getelementptr inbounds i64, i64* %a, i64 %i.08
40 store i64 %add, i64* %arrayidx1, align 8
41 %inc = add nuw nsw i64 %i.08, 1
42 %exitcond.not = icmp eq i64 %inc, %n
43 br i1 %exitcond.not, label %exit, label %for.body, !llvm.loop !0
45 exit: ; preds = %for.body
50 ; Same as above, except we test with a vectorisation factor of (1, scalable)
52 define void @add_ind64_unrolled_nxv1i64(i64* noalias nocapture %a, i64* noalias nocapture readonly %b, i64 %n) {
53 ; CHECK-LABEL: @add_ind64_unrolled_nxv1i64(
56 ; CHECK-NEXT: %[[INDEX:.*]] = phi i64 [ 0, %vector.ph ], [ %{{.*}}, %vector.body ]
57 ; CHECK-NEXT: %[[STEPVEC:.*]] = call <vscale x 1 x i64> @llvm.experimental.stepvector.nxv1i64()
58 ; CHECK-NEXT: %[[TMP1:.*]] = insertelement <vscale x 1 x i64> poison, i64 %[[INDEX]], i32 0
59 ; CHECK-NEXT: %[[IDXSPLT:.*]] = shufflevector <vscale x 1 x i64> %[[TMP1]], <vscale x 1 x i64> poison, <vscale x 1 x i32> zeroinitializer
60 ; CHECK-NEXT: %[[VECIND1:.*]] = add <vscale x 1 x i64> %[[IDXSPLT]], %[[STEPVEC]]
61 ; CHECK-NEXT: %[[EC:.*]] = call i64 @llvm.vscale.i64()
62 ; CHECK-NEXT: %[[TMP2:.*]] = insertelement <vscale x 1 x i64> poison, i64 %[[EC]], i32 0
63 ; CHECK-NEXT: %[[ECSPLT:.*]] = shufflevector <vscale x 1 x i64> %[[TMP2]], <vscale x 1 x i64> poison, <vscale x 1 x i32> zeroinitializer
64 ; CHECK-NEXT: %[[TMP3:.*]] = add <vscale x 1 x i64> %[[ECSPLT]], %[[STEPVEC]]
65 ; CHECK-NEXT: %[[VECIND2:.*]] = add <vscale x 1 x i64> %[[IDXSPLT]], %[[TMP3]]
66 ; CHECK: %[[LOAD1:.*]] = load <vscale x 1 x i64>
67 ; CHECK: %[[LOAD2:.*]] = load <vscale x 1 x i64>
68 ; CHECK: %[[STOREVAL1:.*]] = add nsw <vscale x 1 x i64> %[[LOAD1]], %[[VECIND1]]
69 ; CHECK: %[[STOREVAL2:.*]] = add nsw <vscale x 1 x i64> %[[LOAD2]], %[[VECIND2]]
70 ; CHECK: store <vscale x 1 x i64> %[[STOREVAL1]]
71 ; CHECK: store <vscale x 1 x i64> %[[STOREVAL2]]
76 for.body: ; preds = %entry, %for.body
77 %i.08 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
78 %arrayidx = getelementptr inbounds i64, i64* %b, i64 %i.08
79 %0 = load i64, i64* %arrayidx, align 8
80 %add = add nsw i64 %0, %i.08
81 %arrayidx1 = getelementptr inbounds i64, i64* %a, i64 %i.08
82 store i64 %add, i64* %arrayidx1, align 8
83 %inc = add nuw nsw i64 %i.08, 1
84 %exitcond.not = icmp eq i64 %inc, %n
85 br i1 %exitcond.not, label %exit, label %for.body, !llvm.loop !9
87 exit: ; preds = %for.body
92 ; Test that we can vectorize a separate induction variable (not used for the branch)
94 ; for (long long i = 0; i < n; i++) {
98 ; with an unroll factor (interleave count) of 1.
101 define void @add_unique_ind32(i32* noalias nocapture %a, i64 %n) {
102 ; CHECK-LABEL: @add_unique_ind32(
104 ; CHECK: %[[STEPVEC:.*]] = call <vscale x 4 x i32> @llvm.experimental.stepvector.nxv4i32()
105 ; CHECK-NEXT: %[[INDINIT:.*]] = shl <vscale x 4 x i32> %[[STEPVEC]], shufflevector (<vscale x 4 x i32> insertelement (<vscale x 4 x i32> poison, i32 1, i32 0), <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer)
106 ; CHECK-NEXT: %[[VSCALE:.*]] = call i32 @llvm.vscale.i32()
107 ; CHECK-NEXT: %[[INC:.*]] = shl i32 %[[VSCALE]], 3
108 ; CHECK-NEXT: %[[TMP:.*]] = insertelement <vscale x 4 x i32> poison, i32 %[[INC]], i32 0
109 ; CHECK-NEXT: %[[VECINC:.*]] = shufflevector <vscale x 4 x i32> %[[TMP]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
110 ; CHECK: vector.body:
111 ; CHECK: %[[VECIND:.*]] = phi <vscale x 4 x i32> [ %[[INDINIT]], %vector.ph ], [ %[[VECINDNXT:.*]], %vector.body ]
112 ; CHECK: store <vscale x 4 x i32> %[[VECIND]]
113 ; CHECK: %[[VECINDNXT]] = add <vscale x 4 x i32> %[[VECIND]], %[[VECINC]]
117 for.body: ; preds = %entry, %for.body
118 %i.08 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
119 %r.07 = phi i32 [ %add, %for.body ], [ 0, %entry ]
120 %arrayidx = getelementptr inbounds i32, i32* %a, i64 %i.08
121 store i32 %r.07, i32* %arrayidx, align 4
122 %add = add nuw nsw i32 %r.07, 2
123 %inc = add nuw nsw i64 %i.08, 1
124 %exitcond.not = icmp eq i64 %inc, %n
125 br i1 %exitcond.not, label %exit, label %for.body, !llvm.loop !6
127 exit: ; preds = %for.body
132 ; Test that we can vectorize a separate FP induction variable (not used for the branch)
134 ; for (long long i = 0; i < n; i++) {
138 ; with an unroll factor (interleave count) of 1.
140 define void @add_unique_indf32(float* noalias nocapture %a, i64 %n) {
141 ; CHECK-LABEL: @add_unique_indf32(
143 ; CHECK: %[[STEPVEC:.*]] = call <vscale x 4 x i32> @llvm.experimental.stepvector.nxv4i32()
144 ; CHECK-NEXT: %[[TMP1:.*]] = uitofp <vscale x 4 x i32> %[[STEPVEC]] to <vscale x 4 x float>
145 ; CHECK-NEXT: %[[TMP2:.*]] = fmul <vscale x 4 x float> %[[TMP1]], shufflevector (<vscale x 4 x float> insertelement (<vscale x 4 x float> poison, float 2.000000e+00, i32 0), <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer)
146 ; CHECK-NEXT: %[[INDINIT:.*]] = fadd <vscale x 4 x float> %[[TMP2]], shufflevector (<vscale x 4 x float> insertelement (<vscale x 4 x float> poison, float 0.000000e+00, i32 0), <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer)
147 ; CHECK-NEXT: %[[VSCALE:.*]] = call i32 @llvm.vscale.i32()
148 ; CHECK-NEXT: %[[TMP3:.*]] = shl i32 %8, 2
149 ; CHECK-NEXT: %[[TMP4:.*]] = sitofp i32 %[[TMP3]] to float
150 ; CHECK-NEXT: %[[INC:.*]] = fmul float %[[TMP4]], 2.000000e+00
151 ; CHECK-NEXT: %[[TMP5:.*]] = insertelement <vscale x 4 x float> poison, float %[[INC]], i32 0
152 ; CHECK-NEXT: %[[VECINC:.*]] = shufflevector <vscale x 4 x float> %[[TMP5]], <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
153 ; CHECK: vector.body:
154 ; CHECK: %[[VECIND:.*]] = phi <vscale x 4 x float> [ %[[INDINIT]], %vector.ph ], [ %[[VECINDNXT:.*]], %vector.body ]
155 ; CHECK: store <vscale x 4 x float> %[[VECIND]]
156 ; CHECK: %[[VECINDNXT]] = fadd <vscale x 4 x float> %[[VECIND]], %[[VECINC]]
161 for.body: ; preds = %entry, %for.body
162 %i.08 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
163 %r.07 = phi float [ %add, %for.body ], [ 0.000000e+00, %entry ]
164 %arrayidx = getelementptr inbounds float, float* %a, i64 %i.08
165 store float %r.07, float* %arrayidx, align 4
166 %add = fadd float %r.07, 2.000000e+00
167 %inc = add nuw nsw i64 %i.08, 1
168 %exitcond.not = icmp eq i64 %inc, %n
169 br i1 %exitcond.not, label %exit, label %for.body, !llvm.loop !6
171 exit: ; preds = %for.body
175 !0 = distinct !{!0, !1, !2, !3, !4, !5}
176 !1 = !{!"llvm.loop.mustprogress"}
177 !2 = !{!"llvm.loop.vectorize.width", i32 2}
178 !3 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
179 !4 = !{!"llvm.loop.interleave.count", i32 2}
180 !5 = !{!"llvm.loop.vectorize.enable", i1 true}
181 !6 = distinct !{!6, !1, !7, !3, !8, !5}
182 !7 = !{!"llvm.loop.vectorize.width", i32 4}
183 !8 = !{!"llvm.loop.interleave.count", i32 1}
184 !9 = distinct !{!9, !1, !10, !3, !4, !5}
185 !10 = !{!"llvm.loop.vectorize.width", i32 1}