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