1 ; RUN: opt %loadNPMPolly -aa-pipeline=basic-aa -polly-stmt-granularity=bb '-passes=print<polly-dependences>' -disable-output < %s | FileCheck %s
3 ; This loopnest contains a reduction which imposes the same dependences as the
4 ; accesses to the array A. We need to ensure we keep the dependences of A.
6 ; CHECK: RAW dependences:
7 ; CHECK-NEXT: { Stmt_for_body[i0] -> Stmt_for_body[1 + i0] : 0 <= i0 <= 1022 }
8 ; CHECK-NEXT: WAR dependences:
9 ; CHECK-NEXT: { Stmt_for_body[i0] -> Stmt_for_body[1 + i0] : 0 <= i0 <= 1022 }
10 ; CHECK-NEXT: WAW dependences:
11 ; CHECK-NEXT: { Stmt_for_body[i0] -> Stmt_for_body[1 + i0] : 0 <= i0 <= 1022 }
12 ; CHECK-NEXT: Reduction dependences:
13 ; CHECK-NEXT: { Stmt_for_body[i0] -> Stmt_for_body[1 + i0] : 0 <= i0 <= 1022 }
16 ; void AandSum(int *restrict sum, int *restrict A) {
17 ; for (int i = 0; i < 1024; i++) {
18 ; A[i] = A[i] + A[i - 1];
19 ; A[i - 1] = A[i] + A[i - 2];
24 target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
26 define void @AandSum(ptr noalias %sum, ptr noalias %A) {
30 for.cond: ; preds = %for.inc, %entry
31 %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
32 %exitcond = icmp ne i32 %i.0, 1024
33 br i1 %exitcond, label %for.body, label %for.end
35 for.body: ; preds = %for.cond
36 %arrayidx = getelementptr inbounds i32, ptr %A, i32 %i.0
37 %tmp = load i32, ptr %arrayidx, align 4
38 %sub = add nsw i32 %i.0, -1
39 %arrayidx1 = getelementptr inbounds i32, ptr %A, i32 %sub
40 %tmp1 = load i32, ptr %arrayidx1, align 4
41 %add = add nsw i32 %tmp, %tmp1
42 %arrayidx2 = getelementptr inbounds i32, ptr %A, i32 %i.0
43 store i32 %add, ptr %arrayidx2, align 4
44 %sub4 = add nsw i32 %i.0, -2
45 %arrayidx5 = getelementptr inbounds i32, ptr %A, i32 %sub4
46 %tmp2 = load i32, ptr %arrayidx5, align 4
47 %add6 = add nsw i32 %add, %tmp2
48 %sub7 = add nsw i32 %i.0, -1
49 %arrayidx8 = getelementptr inbounds i32, ptr %A, i32 %sub7
50 store i32 %add6, ptr %arrayidx8, align 4
51 %tmp3 = load i32, ptr %sum, align 4
52 %add9 = add nsw i32 %tmp3, %i.0
53 store i32 %add9, ptr %sum, align 4
56 for.inc: ; preds = %for.body
57 %inc = add nsw i32 %i.0, 1
60 for.end: ; preds = %for.cond