1; RUN: opt %loadNPMPolly -polly-process-unprofitable=false '-passes=print<polly-detect>' -disable-output < %s 2>&1 | FileCheck %s 2; 3; CHECK-NOT: Valid 4; 5; Do not consider this a SCoP as we do not perform any optimizations for 6; loops with a small trip count. 7; 8; void f(int *A) { 9; for (int i = 0; i < 4; i++) 10; for (int j = 0; j < 4; j++) 11; for (int k = 0; k < 4; k++) 12; for (int l = 0; l < 4; l++) 13; A[i] += A[i] * A[i - 1] + A[i + 1]; 14; } 15; 16target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 17 18define void @f(ptr %A) { 19entry: 20 br label %for.cond 21 22for.cond: ; preds = %for.inc.24, %entry 23 %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc.24 ], [ 0, %entry ] 24 %exitcond5 = icmp ne i64 %indvars.iv, 4 25 br i1 %exitcond5, label %for.body, label %for.end.26 26 27for.body: ; preds = %for.cond 28 br label %for.cond.1 29 30for.cond.1: ; preds = %for.inc.21, %for.body 31 %j.0 = phi i32 [ 0, %for.body ], [ %inc22, %for.inc.21 ] 32 %exitcond2 = icmp ne i32 %j.0, 4 33 br i1 %exitcond2, label %for.body.3, label %for.end.23 34 35for.body.3: ; preds = %for.cond.1 36 br label %for.cond.4 37 38for.cond.4: ; preds = %for.inc.18, %for.body.3 39 %k.0 = phi i32 [ 0, %for.body.3 ], [ %inc19, %for.inc.18 ] 40 %exitcond1 = icmp ne i32 %k.0, 4 41 br i1 %exitcond1, label %for.body.6, label %for.end.20 42 43for.body.6: ; preds = %for.cond.4 44 br label %for.cond.7 45 46for.cond.7: ; preds = %for.inc, %for.body.6 47 %l.0 = phi i32 [ 0, %for.body.6 ], [ %inc, %for.inc ] 48 %exitcond = icmp ne i32 %l.0, 4 49 br i1 %exitcond, label %for.body.9, label %for.end 50 51for.body.9: ; preds = %for.cond.7 52 %arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv 53 %tmp = load i32, ptr %arrayidx, align 4 54 %tmp6 = add nsw i64 %indvars.iv, -1 55 %arrayidx11 = getelementptr inbounds i32, ptr %A, i64 %tmp6 56 %tmp7 = load i32, ptr %arrayidx11, align 4 57 %mul = mul nsw i32 %tmp, %tmp7 58 %tmp8 = add nuw nsw i64 %indvars.iv, 1 59 %arrayidx13 = getelementptr inbounds i32, ptr %A, i64 %tmp8 60 %tmp9 = load i32, ptr %arrayidx13, align 4 61 %add14 = add nsw i32 %mul, %tmp9 62 %arrayidx16 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv 63 %tmp10 = load i32, ptr %arrayidx16, align 4 64 %add17 = add nsw i32 %tmp10, %add14 65 store i32 %add17, ptr %arrayidx16, align 4 66 br label %for.inc 67 68for.inc: ; preds = %for.body.9 69 %inc = add nuw nsw i32 %l.0, 1 70 br label %for.cond.7 71 72for.end: ; preds = %for.cond.7 73 br label %for.inc.18 74 75for.inc.18: ; preds = %for.end 76 %inc19 = add nuw nsw i32 %k.0, 1 77 br label %for.cond.4 78 79for.end.20: ; preds = %for.cond.4 80 br label %for.inc.21 81 82for.inc.21: ; preds = %for.end.20 83 %inc22 = add nuw nsw i32 %j.0, 1 84 br label %for.cond.1 85 86for.end.23: ; preds = %for.cond.1 87 br label %for.inc.24 88 89for.inc.24: ; preds = %for.end.23 90 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 91 br label %for.cond 92 93for.end.26: ; preds = %for.cond 94 ret void 95} 96