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1; RUN: opt < %s -cache-line-size=64 -passes='print<loop-cache-cost>' -disable-output 2>&1 | FileCheck %s2 3;; This test checks the effect of rounding cache cost to 1 when it is 4;; evaluated to 0 because at least 1 cache line is accessed by the loopnest.5;; It does not make sense to output that zero cache lines are used.6;; The cost of reference group for B[j], C[j], D[j] and E[j] were 7;; calculted 0 before but now they are 1 which makes each loop cost more reasonable.8;9; void test(int n, int m, int o, int A[2][3], int B[2], int C[2], int D[2], int E[2]) {10; for (int i = 0; i < 3; i++)11; for (int j = 0; j < 2; j++)12; A[j][i] = 1;13; B[j] = 1;14; C[j] = 1;15; D[j] = 116; E[j] = 117; }18 19; CHECK: Loop 'for.j' has cost = 1820; CHECK-NEXT: Loop 'for.i' has cost = 1021 22define void @test(ptr %A, ptr %B, ptr %C, ptr %D, ptr %E) {23 24entry:25 br label %for.i.preheader.split26 27for.i.preheader.split: ; preds = %for.i.preheader28 br label %for.i29 30for.i: ; preds = %for.inci, %for.i.preheader.split31 %i = phi i64 [ %inci, %for.inci ], [ 0, %for.i.preheader.split ]32 br label %for.j33 34for.j: ; preds = %for.incj, %for.i35 %j = phi i64 [ %incj, %for.j ], [ 0, %for.i ]36 %mul_j = mul nsw i64 %j, 337 %index_j = add i64 %mul_j, %i38 %arrayidxA = getelementptr inbounds [2 x [ 3 x i32]], ptr %A, i64 %j, i64 %i39 store i32 1, ptr %arrayidxA, align 440 %arrayidxB = getelementptr inbounds i32, ptr %B, i64 %j41 store i32 1, ptr %arrayidxB, align 442 %arrayidxC = getelementptr inbounds i32, ptr %C, i64 %j43 store i32 1, ptr %arrayidxC, align 444 %arrayidxD = getelementptr inbounds i32, ptr %D, i64 %j45 store i32 1, ptr %arrayidxD, align 446 %arrayidxE = getelementptr inbounds i32, ptr %E, i64 %j47 store i32 1, ptr %arrayidxE, align 448 %incj = add nsw i64 %j, 149 %exitcond.us = icmp eq i64 %incj, 250 br i1 %exitcond.us, label %for.inci, label %for.j51 52for.inci: ; preds = %for.incj53 %inci = add nsw i64 %i, 154 %exitcond55.us = icmp eq i64 %inci, 355 br i1 %exitcond55.us, label %for.end.loopexit, label %for.i56 57for.end.loopexit: ; preds = %for.inci58 br label %for.end59 60for.end: ; preds = %for.end.loopexit, %for.cond1.preheader.lr.ph, %entry61 ret void62}63