1 ; RUN: opt -basic-aa -loop-versioning -S < %s | FileCheck %s
2 ; RUN: opt -aa-pipeline=basic-aa -passes=loop-versioning -S < %s | FileCheck %s
4 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
6 ; Version this loop with overlap checks between a, c and b, c.
8 define void @f(i32* %a, i32* %b, i32* %c) {
12 ; CHECK: for.body.lver.check:
18 ; CHECK: br i1 %conflict.rdx, label %for.body.ph.lver.orig, label %for.body.ph
20 ; CHECK: for.body.ph.lver.orig:
21 ; CHECK: for.body.lver.orig:
22 ; CHECK: br i1 %exitcond.lver.orig, label %for.end.loopexit, label %for.body.lver.orig
25 ; CHECK: br i1 %exitcond, label %for.end.loopexit12, label %for.body
26 ; CHECK: for.end.loopexit:
27 ; CHECK: br label %for.end
28 ; CHECK: for.end.loopexit12:
29 ; CHECK: br label %for.end
32 for.body: ; preds = %for.body, %entry
33 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
35 %arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
36 %loadA = load i32, i32* %arrayidxA, align 4
38 %arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
39 %loadB = load i32, i32* %arrayidxB, align 4
41 %mulC = mul i32 %loadA, %loadB
43 %arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind
44 store i32 %mulC, i32* %arrayidxC, align 4
46 %add = add nuw nsw i64 %ind, 1
47 %exitcond = icmp eq i64 %add, 20
48 br i1 %exitcond, label %for.end, label %for.body
50 for.end: ; preds = %for.body