1 ; RUN: opt -basicaa -loop-distribute -enable-loop-distribute -S < %s | FileCheck %s
3 ; If we can't find the bounds for one of the arrays in order to generate the
4 ; memchecks (e.g., C[i * i] below), loop shold not get distributed.
6 ; for (i = 0; i < n; i++) {
8 ; -------------------------------
12 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
14 ; Verify that we didn't distribute by checking that we still have the original
17 @A = common global i32* null, align 8
18 @B = common global i32* null, align 8
19 @C = common global i32* null, align 8
23 %a = load i32*, i32** @A, align 8
24 %b = load i32*, i32** @B, align 8
25 %c = load i32*, i32** @C, align 8
29 for.body: ; preds = %for.body, %entry
30 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
32 %arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
33 %loadA = load i32, i32* %arrayidxA, align 4
35 %mulA = mul i32 %loadA, 3
37 %add = add nuw nsw i64 %ind, 1
38 %arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add
39 store i32 %mulA, i32* %arrayidxA_plus_4, align 4
41 %arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
42 %loadB = load i32, i32* %arrayidxB, align 4
44 %mulC = mul i32 %loadB, 2
46 %ind_2 = mul i64 %ind, %ind
47 %arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind_2
48 store i32 %mulC, i32* %arrayidxC, align 4
50 %exitcond = icmp eq i64 %add, 20
51 br i1 %exitcond, label %for.end, label %for.body
55 for.end: ; preds = %for.body