| ; RUN: opt < %s -aa-pipeline=default -passes='print<da>' -da-miv-max-level-threshold=2 |
| |
| ;; Check to make sure when MIV tests reach a maximum depth level |
| ;; threshold, the resulting dependence is conservatively correct. |
| |
| ;; for (int i = 0; i < n; i++) |
| ;; for (int j = 0; j < m; j++) |
| ;; for (int k = 0; k < o; k++) |
| ;; A[i+j+k] = A[i-j+k] + B[i+j+k]; |
| |
| |
| ; CHECK: Src: %2 = load float, float* %arrayidx, align 4 --> Dst: %5 = load float, float* %arrayidx12, align 4 |
| ; CHECK-NEXT: da analyze - none! |
| ; CHECK: Src: %2 = load float, float* %arrayidx, align 4 --> Dst: store float %add13, float* %arrayidx17, align 4 |
| ; CHECK-NEXT: da analyze - anti [* * *|<]! |
| ; CHECK: Src: %5 = load float, float* %arrayidx12, align 4 --> Dst: store float %add13, float* %arrayidx17, align 4 |
| ; CHECK-NEXT: da analyze - none! |
| |
| define void @foo(ptr noalias %A, ptr noalias %B, i32 signext %m, i32 signext %n, i32 signext %o) { |
| entry: |
| %cmp5 = icmp sgt i32 %n, 0 |
| br i1 %cmp5, label %for.body.preheader, label %for.end23 |
| |
| for.body.preheader: ; preds = %entry |
| %wide.trip.count21 = zext i32 %n to i64 |
| br label %for.body |
| |
| for.body: ; preds = %for.body.preheader, %for.inc21 |
| %indvars.iv19 = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next20, %for.inc21 ] |
| %cmp23 = icmp sgt i32 %m, 0 |
| br i1 %cmp23, label %for.body4.preheader, label %for.inc21 |
| |
| for.body4.preheader: ; preds = %for.body |
| %wide.trip.count17 = zext i32 %m to i64 |
| br label %for.body4 |
| |
| for.body4: ; preds = %for.body4.preheader, %for.inc18 |
| %indvars.iv12 = phi i64 [ 0, %for.body4.preheader ], [ %indvars.iv.next13, %for.inc18 ] |
| %cmp61 = icmp sgt i32 %o, 0 |
| br i1 %cmp61, label %for.body8.preheader, label %for.inc18 |
| |
| for.body8.preheader: ; preds = %for.body4 |
| %wide.trip.count = zext i32 %o to i64 |
| br label %for.body8 |
| |
| for.body8: ; preds = %for.body8.preheader, %for.body8 |
| %indvars.iv = phi i64 [ 0, %for.body8.preheader ], [ %indvars.iv.next, %for.body8 ] |
| %0 = sub nsw i64 %indvars.iv19, %indvars.iv12 |
| %1 = add nsw i64 %0, %indvars.iv |
| %arrayidx = getelementptr inbounds float, ptr %A, i64 %1 |
| %2 = load float, ptr %arrayidx, align 4 |
| %3 = add nuw nsw i64 %indvars.iv19, %indvars.iv12 |
| %4 = add nuw nsw i64 %3, %indvars.iv |
| %arrayidx12 = getelementptr inbounds float, ptr %B, i64 %4 |
| %5 = load float, ptr %arrayidx12, align 4 |
| %add13 = fadd fast float %2, %5 |
| %6 = add nuw nsw i64 %indvars.iv19, %indvars.iv12 |
| %7 = add nuw nsw i64 %6, %indvars.iv |
| %arrayidx17 = getelementptr inbounds float, ptr %A, i64 %7 |
| store float %add13, ptr %arrayidx17, align 4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count |
| br i1 %exitcond, label %for.body8, label %for.inc18.loopexit |
| |
| for.inc18.loopexit: ; preds = %for.body8 |
| br label %for.inc18 |
| |
| for.inc18: ; preds = %for.inc18.loopexit, %for.body4 |
| %indvars.iv.next13 = add nuw nsw i64 %indvars.iv12, 1 |
| %exitcond18 = icmp ne i64 %indvars.iv.next13, %wide.trip.count17 |
| br i1 %exitcond18, label %for.body4, label %for.inc21.loopexit |
| |
| for.inc21.loopexit: ; preds = %for.inc18 |
| br label %for.inc21 |
| |
| for.inc21: ; preds = %for.inc21.loopexit, %for.body |
| %indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1 |
| %exitcond22 = icmp ne i64 %indvars.iv.next20, %wide.trip.count21 |
| br i1 %exitcond22, label %for.body, label %for.end23.loopexit |
| |
| for.end23.loopexit: ; preds = %for.inc21 |
| br label %for.end23 |
| |
| for.end23: ; preds = %for.end23.loopexit, %entry |
| ret void |
| } |