| ; RUN: opt %loadPolly -polly-print-scops -disable-output < %s | FileCheck %s |
| ; Verify if the following case is not detected as reduction. |
| ; |
| ; void f(int *A,int *sum) { |
| ; for (int i = 0; i < 1024; i++) |
| ; sum[0] = sum[1] + A[i]; |
| ; } |
| ; |
| ; Verify that we don't detect the reduction on sum |
| ; |
| ; CHECK: ReadAccess := [Reduction Type: NONE] [Scalar: 0] |
| ; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_sum[1] }; |
| ; CHECK-NEXT:ReadAccess := [Reduction Type: NONE] [Scalar: 0] |
| ; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_A[i0] }; |
| ; CHECK-NEXT:MustWriteAccess := [Reduction Type: NONE] [Scalar: 0] |
| ; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_sum[0] }; |
| ; |
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| |
| define dso_local void @f(ptr nocapture noundef readonly %A, ptr nocapture noundef %sum) local_unnamed_addr #0 { |
| entry: |
| br label %for.body |
| |
| for.cond.cleanup: ; preds = %for.body |
| ret void |
| |
| for.body: ; preds = %entry.split, %for.body |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %arrayidx = getelementptr inbounds i32, ptr %sum, i64 1 |
| %0 = load i32, ptr %arrayidx |
| %arrayidx1 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv |
| %1 = load i32, ptr %arrayidx1 |
| %add = add nsw i32 %1, %0 |
| store i32 %add, ptr %sum |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond.not = icmp eq i64 %indvars.iv.next, 1024 |
| br i1 %exitcond.not, label %for.cond.cleanup, label %for.body |
| } |