1 ; RUN: opt -basic-aa -loop-vectorize -enable-mem-access-versioning -force-vector-width=2 -force-vector-interleave=1 < %s -S | FileCheck %s
3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
5 ; Check that we version this loop with speculating the value 1 for symbolic
6 ; strides. This also checks that the symbolic stride information is correctly
7 ; propagated to the memcheck generation. Without this the loop wouldn't
8 ; vectorize because we couldn't determine the array bounds for the required
12 define void @test(i32* %A, i64 %AStride,
13 i32* %B, i32 %BStride,
14 i32* %C, i64 %CStride, i32 %N) {
16 %cmp13 = icmp eq i32 %N, 0
17 br i1 %cmp13, label %for.end, label %for.body.preheader
19 ; CHECK-DAG: icmp ne i64 %AStride, 1
20 ; CHECK-DAG: icmp ne i32 %BStride, 1
21 ; CHECK-DAG: icmp ne i64 %CStride, 1
27 ; CHECK: load <2 x i32>
33 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
34 %iv.trunc = trunc i64 %indvars.iv to i32
35 %mul = mul i32 %iv.trunc, %BStride
36 %mul64 = zext i32 %mul to i64
37 %arrayidx = getelementptr inbounds i32, i32* %B, i64 %mul64
38 %0 = load i32, i32* %arrayidx, align 4
39 %mul2 = mul nsw i64 %indvars.iv, %CStride
40 %arrayidx3 = getelementptr inbounds i32, i32* %C, i64 %mul2
41 %1 = load i32, i32* %arrayidx3, align 4
42 %mul4 = mul nsw i32 %1, %0
43 %mul3 = mul nsw i64 %indvars.iv, %AStride
44 %arrayidx7 = getelementptr inbounds i32, i32* %A, i64 %mul3
45 store i32 %mul4, i32* %arrayidx7, align 4
46 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
47 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
48 %exitcond = icmp eq i32 %lftr.wideiv, %N
49 br i1 %exitcond, label %for.end.loopexit, label %for.body
58 ; We used to crash on this function because we removed the fptosi cast when
59 ; replacing the symbolic stride '%conv'.
63 ; CHECK: load <2 x double>
65 define void @fn1(double* noalias %x, double* noalias %c, double %a) {
67 %conv = fptosi double %a to i32
68 %conv2 = add i32 %conv, 4
69 %cmp8 = icmp sgt i32 %conv2, 0
70 br i1 %cmp8, label %for.body.preheader, label %for.end
76 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
77 %0 = trunc i64 %indvars.iv to i32
78 %mul = mul nsw i32 %0, %conv
79 %idxprom = sext i32 %mul to i64
80 %arrayidx = getelementptr inbounds double, double* %x, i64 %idxprom
81 %1 = load double, double* %arrayidx, align 8
82 %arrayidx3 = getelementptr inbounds double, double* %c, i64 %indvars.iv
83 store double %1, double* %arrayidx3, align 8
84 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
85 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
86 %exitcond = icmp eq i32 %lftr.wideiv, %conv2
87 br i1 %exitcond, label %for.end.loopexit, label %for.body