1 ; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb "-passes=scop(print<polly-mse>)" -disable-output < %s | FileCheck %s
2 ; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb "-passes=scop(print<polly-mse>)" -pass-remarks-analysis="polly-mse" -disable-output < %s 2>&1 | FileCheck %s --check-prefix=MSE
4 ; Verify that the expansion of an array with load after store in a same statement is not done.
6 ; Original source code :
11 ; void mse(double A[Ni], double B[Nj], double C[Nj], double D[Nj]) {
13 ; for (i = 0; i < Ni; i++) {
14 ; for (int j = 0; j<Nj; j++) {
21 ; Check that C is expanded
23 ; CHECK: i64 MemRef_C_Stmt_for_body4_expanded[10000][10000]; // Element size 8
24 ; CHECK: new: { Stmt_for_body4[i0, i1] -> MemRef_C_Stmt_for_body4_expanded[i0, i1] };
26 ; Check that B is not expanded
28 ; CHECK-NOT: double MemRef_B_Stmt_for_body4_expanded[10000][10000]; // Element size 8
29 ; MSE: MemRef_B has read after write to the same element in same statement. The dependences found during analysis may be wrong because Polly is not able to handle such case for now.
31 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
32 target triple = "x86_64-unknown-linux-gnu"
34 define void @mse(ptr %A, ptr %B, ptr %C, ptr %D) {
38 entry.split: ; preds = %entry
41 for.body: ; preds = %entry.split, %for.inc9
42 %i.02 = phi i32 [ 0, %entry.split ], [ %inc10, %for.inc9 ]
45 for.body4: ; preds = %for.body, %for.body4
46 %indvars.iv = phi i64 [ 0, %for.body ], [ %indvars.iv.next, %for.body4 ]
47 %0 = trunc i64 %indvars.iv to i32
48 %conv = sitofp i32 %0 to double
49 %arrayidx = getelementptr inbounds double, ptr %B, i64 %indvars.iv
50 store double %conv, ptr %arrayidx, align 8
51 %arrayidx6 = getelementptr inbounds double, ptr %B, i64 %indvars.iv
52 %1 = load i64, ptr %arrayidx6, align 8
53 %arrayidx8 = getelementptr inbounds double, ptr %C, i64 %indvars.iv
54 store i64 %1, ptr %arrayidx8, align 8
55 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
56 %exitcond = icmp ne i64 %indvars.iv.next, 10000
57 br i1 %exitcond, label %for.body4, label %for.inc9
59 for.inc9: ; preds = %for.body4
60 %inc10 = add nuw nsw i32 %i.02, 1
61 %exitcond3 = icmp ne i32 %inc10, 10000
62 br i1 %exitcond3, label %for.body, label %for.end11
64 for.end11: ; preds = %for.inc9