1 ; RUN: opt %loadPolly -polly-mse -analyze < %s | FileCheck %s
2 ; RUN: opt %loadPolly -polly-mse -pass-remarks-analysis="polly-mse" -analyze < %s 2>&1| FileCheck %s --check-prefix=MSE
4 ; Verify that Polly detects problems and does not expand the array
6 ; Original source code :
11 ; double mse(double A[Ni], double B[Nj]) {
14 ; for (i = 0; i < Ni; i++) {
15 ; for (int j = 2; j<Nj; j++) {
23 ; Check that the pass detects the problem of read from original array after expansion.
25 ; MSE: The expansion of MemRef_B would lead to a read from the original array.
27 ; CHECK-NOT: double MemRef_B2_expanded[2000][3000]; // Element size 8
29 ; Check that the memory accesses are not modified
31 ; CHECK-NOT: new: { Stmt_for_body3[i0, i1] -> MemRef_B_Stmt_for_body3_expanded[i0, i1] };
32 ; CHECK-NOT: new: { Stmt_for_end[i0] -> MemRef_B_Stmt_for_body3_expanded
34 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
35 target triple = "x86_64-unknown-linux-gnu"
37 define double @mse(double* %A, double* %B) {
41 entry.split: ; preds = %entry
44 for.body: ; preds = %entry.split, %for.end
45 %indvars.iv4 = phi i64 [ 0, %entry.split ], [ %indvars.iv.next5, %for.end ]
48 for.body3: ; preds = %for.body, %for.body3
49 %indvars.iv = phi i64 [ 2, %for.body ], [ %indvars.iv.next, %for.body3 ]
50 %0 = trunc i64 %indvars.iv to i32
51 %conv = sitofp i32 %0 to double
52 %1 = add nsw i64 %indvars.iv, -1
53 %arrayidx = getelementptr inbounds double, double* %B, i64 %1
54 store double %conv, double* %arrayidx, align 8
55 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
56 %exitcond = icmp ne i64 %indvars.iv.next, 3000
57 br i1 %exitcond, label %for.body3, label %for.end
59 for.end: ; preds = %for.body3
60 %arrayidx5 = getelementptr inbounds double, double* %B, i64 %indvars.iv4
61 %2 = bitcast double* %arrayidx5 to i64*
62 %3 = load i64, i64* %2, align 8
63 %arrayidx7 = getelementptr inbounds double, double* %A, i64 %indvars.iv4
64 %4 = bitcast double* %arrayidx7 to i64*
65 store i64 %3, i64* %4, align 8
66 %indvars.iv.next5 = add nuw nsw i64 %indvars.iv4, 1
67 %exitcond6 = icmp ne i64 %indvars.iv.next5, 2000
68 br i1 %exitcond6, label %for.body, label %for.end10
70 for.end10: ; preds = %for.end
71 ret double 6.000000e+00