1; RUN: opt %loadNPMPolly '-passes=print<polly-function-scops>' -disable-output < %s 2>&1 | FileCheck %s 2; Verify if the following case is not detected as reduction. 3; 4; void f(int *A,int *sum) { 5; for (int i = 0; i < 1024; i++) 6; sum[0] = sum[1] + A[i]; 7; } 8; 9; Verify that we don't detect the reduction on sum 10; 11; CHECK: ReadAccess := [Reduction Type: NONE] [Scalar: 0] 12; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_sum[1] }; 13; CHECK-NEXT:ReadAccess := [Reduction Type: NONE] [Scalar: 0] 14; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_A[i0] }; 15; CHECK-NEXT:MustWriteAccess := [Reduction Type: NONE] [Scalar: 0] 16; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_sum[0] }; 17; 18target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" 19 20define dso_local void @f(ptr nocapture noundef readonly %A, ptr nocapture noundef %sum) local_unnamed_addr #0 { 21entry: 22 br label %for.body 23 24for.cond.cleanup: ; preds = %for.body 25 ret void 26 27for.body: ; preds = %entry.split, %for.body 28 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 29 %arrayidx = getelementptr inbounds i32, ptr %sum, i64 1 30 %0 = load i32, ptr %arrayidx 31 %arrayidx1 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv 32 %1 = load i32, ptr %arrayidx1 33 %add = add nsw i32 %1, %0 34 store i32 %add, ptr %sum 35 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 36 %exitcond.not = icmp eq i64 %indvars.iv.next, 1024 37 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body 38} 39