llvm-project

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; RUN: opt %loadNPMPolly '-passes=print<polly-ast>' -polly-ast-detect-parallel -disable-output < %s | FileCheck %s
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;
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; The minimal dependence distance of the innermost loop should be 1 instead of 250.
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; CHECK:    #pragma minimal dependence distance: 1
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; CHECK:    for (int c0 = 0; c0 <= 499; c0 += 1)
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; CHECK:      #pragma minimal dependence distance: 1
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; CHECK:      for (int c1 = 0; c1 <= 998; c1 += 1) {
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; CHECK:        Stmt_bb9(c0, c1);
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; CHECK:        Stmt_bb9_b(c0, c1);
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;
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;    void foo (int *A, int *B) {
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;      for (int i=0; i < 500; i++) {
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;        for (int j=0; j < 1000; j++) {
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;          B[i] = B[i] + 1;
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;          A[j] += A[j % 250];
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;        }
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;      }
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;    }
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;
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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define void @foo(ptr nocapture %arg, ptr nocapture %arg1) {
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bb:
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  br label %bb2
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bb2:                                              ; preds = %bb
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  br label %bb4
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bb3:                                              ; preds = %bb6
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  ret void
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bb4:                                              ; preds = %bb6, %bb2
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  %tmp = phi i32 [ 0, %bb2 ], [ %tmp7, %bb6 ]
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  %tmp5 = getelementptr inbounds i32, ptr %arg1, i32 %tmp
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  br label %bb9
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bb6:                                              ; preds = %bb9
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  %tmp7 = add nuw nsw i32 %tmp, 1
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  %tmp8 = icmp eq i32 %tmp7, 500
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  br i1 %tmp8, label %bb3, label %bb4
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bb9:                                              ; preds = %bb9, %bb4
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  %tmp10 = phi i32 [ 1, %bb4 ], [ %tmp19, %bb9 ]
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  %tmp11 = load i32, ptr %tmp5, align 4
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  %tmp12 = add nsw i32 %tmp11, 1
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  store i32 %tmp12, ptr %tmp5, align 4
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  %tmp13 = urem i32 %tmp10, 250
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  %tmp14 = getelementptr inbounds i32, ptr %arg, i32 %tmp13
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  %tmp15 = load i32, ptr %tmp14, align 4
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  %tmp16 = getelementptr inbounds i32, ptr %arg, i32 %tmp10
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  %tmp17 = load i32, ptr %tmp16, align 4
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  %tmp18 = add nsw i32 %tmp17, %tmp15
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  store i32 %tmp18, ptr %tmp16, align 4
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  %tmp19 = add nuw nsw i32 %tmp10, 1
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  %tmp20 = icmp eq i32 %tmp19, 1000
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  br i1 %tmp20, label %bb6, label %bb9
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}
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