1; RUN: opt -loop-vectorize -force-vector-width=4 -enable-vplan-native-path -S %s | FileCheck %s
2
3; Test that VPlan native path is able to widen call intructions like
4; llvm.sqrt.* intrincis calls.
5
6declare double @llvm.sqrt.f64(double %0)
7define void @widen_call_instruction(double* noalias nocapture readonly %a.in, double* noalias nocapture readonly %b.in, double* noalias nocapture %c.out) {
8; CHECK-LABEL: @widen_call_instruction(
9
10; CHECK: vector.body:
11; CHECK-NEXT: %[[FOR1_INDEX:.*]] = phi i64 [ 0, %[[LABEL_PR:.*]] ], [ %{{.*}}, %[[LABEL_FOR1_LATCH:.*]] ]
12; CHECK: %[[VEC_INDEX:.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, %[[LABEL_PR]] ], [ %{{.*}}, %[[LABEL_FOR1_LATCH]] ]
13; CHECK-NEXT: %[[A_PTR:.*]] = getelementptr inbounds double, double* %a.in, <4 x i64> %[[VEC_INDEX]]
14; CHECK-NEXT: %[[MASKED_GATHER1:.*]] = call <4 x double> @llvm.masked.gather.v4f64.v4p0f64(<4 x double*> %[[A_PTR]], i32 8, <4 x i1> <i1 true, i1 true, i1 true, i1 true>, <4 x double> undef)
15; CHECK-NEXT: %[[B_PTR:.*]] = getelementptr inbounds double, double* %b.in, <4 x i64> %[[VEC_INDEX]]
16; CHECK-NEXT: %[[MASKED_GATHER2:.*]] = call <4 x double> @llvm.masked.gather.v4f64.v4p0f64(<4 x double*> %[[B_PTR]], i32 8, <4 x i1> <i1 true, i1 true, i1 true, i1 true>, <4 x double> undef)
17; CHECK-NEXT: %[[B_SQRT:.*]] = call <4 x double> @llvm.sqrt.v4f64(<4 x double> %[[MASKED_GATHER2]])
18; CHECK-NEXT: br label %[[FOR2_HEADER:.*]]
19
20; CHECK: [[FOR2_HEADER]]:
21; CHECK-NEXT: %[[FOR2_INDEX:.*]] = phi <4 x i32> [ zeroinitializer, %vector.body ], [ %[[FOR2_INDEX_NEXT:.*]], %[[FOR2_HEADER]] ]
22; CHECK-NEXT: %[[REDUCTION:.*]] = phi <4 x double> [ %[[MASKED_GATHER1]], %vector.body ], [ %[[REDUCTION_NEXT:.*]], %[[FOR2_HEADER]] ]
23; CHECK-NEXT: %[[REDUCTION_NEXT]] = fadd <4 x double> %[[B_SQRT]], %[[REDUCTION]]
24; CHECK-NEXT: %[[FOR2_INDEX_NEXT]] = add nuw nsw <4 x i32> %[[FOR2_INDEX]], <i32 1, i32 1, i32 1, i32 1>
25; CHECK-NEXT: %[[VEC_PTR:.*]] = icmp eq <4 x i32> %[[FOR2_INDEX_NEXT]], <i32 10000, i32 10000, i32 10000, i32 10000>
26; CHECK-NEXT: %[[EXIT_COND:.*]] = extractelement <4 x i1> %[[VEC_PTR]], i32 0
27; CHECK-NEXT: br i1 %[[EXIT_COND]], label %[[FOR1_LATCH:.*]], label %{{.*}}
28
29; CHECK: [[FOR1_LATCH]]:
30; CHECK-NEXT: %[[REDUCTION:.*]] = phi <4 x double> [ %[[REDUCTION_NEXT]], %[[FOR2_HEADER]] ]
31; CHECK-NEXT: %[[C_PTR:.*]] = getelementptr inbounds double, double* %c.out, <4 x i64> %[[VEC_INDEX]]
32; CHECK-NEXT: call void @llvm.masked.scatter.v4f64.v4p0f64(<4 x double> %[[REDUCTION]], <4 x double*> %[[C_PTR]], i32 8, <4 x i1> <i1 true, i1 true, i1 true, i1 true>)
33; CHECK-NEXT: %[[VEC_INDEX_NEXT:.*]] = add nuw nsw <4 x i64> %[[VEC_INDEX]], <i64 1, i64 1, i64 1, i64 1>
34; CHECK-NEXT: %[[VEC_PTR:.*]] = icmp eq <4 x i64> %[[VEC_INDEX_NEXT]], <i64 1000, i64 1000, i64 1000, i64 1000>
35; CHECK-NEXT: %{{.*}} = extractelement <4 x i1> %[[VEC_PTR]], i32 0
36; CHECK-NEXT: %[[FOR1_INDEX_NEXT:.*]] = add nuw i64 %[[FOR1_INDEX]], 4
37; CHECK-NEXT: %{{.*}} = add <4 x i64> %[[VEC_INDEX]], <i64 4, i64 4, i64 4, i64 4>
38; CHECK-NEXT: %[[EXIT_COND:.*]] = icmp eq i64 %[[FOR1_INDEX_NEXT]], 1000
39; CHECK-NEXT: br i1 %[[EXIT_COND]], label %{{.*}}, label %vector.body
40
41entry:
42  br label %for1.header
43
44for1.header:
45  %indvar1 = phi i64 [ 0, %entry ], [ %indvar11, %for1.latch ]
46  %a.ptr = getelementptr inbounds double, double* %a.in, i64 %indvar1
47  %a = load double, double* %a.ptr, align 8
48  %b.ptr = getelementptr inbounds double, double* %b.in, i64 %indvar1
49  %b = load double, double* %b.ptr, align 8
50  %b.sqrt = call double @llvm.sqrt.f64(double %b)
51  br label %for2.header
52
53for2.header:
54  %indvar2 = phi i32 [ 0, %for1.header ], [ %indvar21, %for2.header ]
55  %a.reduction = phi double [ %a, %for1.header ], [ %a.reduction1, %for2.header ]
56  %a.reduction1 = fadd double %b.sqrt, %a.reduction
57  %indvar21 = add nuw nsw i32 %indvar2, 1
58  %for2.cond = icmp eq i32 %indvar21, 10000
59  br i1 %for2.cond, label %for1.latch, label %for2.header
60
61for1.latch:
62  %c.ptr = getelementptr inbounds double, double* %c.out, i64 %indvar1
63  store double %a.reduction1, double* %c.ptr, align 8
64  %indvar11 = add nuw nsw i64 %indvar1, 1
65  %for1.cond = icmp eq i64 %indvar11, 1000
66  br i1 %for1.cond, label %exit, label %for1.header, !llvm.loop !0
67
68exit:
69  ret void
70}
71
72!0 = distinct !{!0, !1}
73!1 = !{!"llvm.loop.vectorize.enable", i1 true}
74