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This crash occurs due to memory corruption when trying to update dependency direction based on Constraints. This crash was observed during lnt regression of Polybench benchmark test case dynprog. Review: http://reviews.llvm.org/D8059 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231788 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
4.9 KiB
LLVM
104 lines
4.9 KiB
LLVM
; RUN: opt < %s -analyze -basicaa -da
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;; Check that this code doesn't abort. Test case is reduced version of lnt Polybench benchmark test case dynprog.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@sum_c = common global [10 x [10 x [10 x i32]]] zeroinitializer
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@c = common global [10 x [10 x i32]] zeroinitializer
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@W = common global [10 x [10 x i32]] zeroinitializer
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@out_l = common global i32 0
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; Function Attrs: nounwind uwtable
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define void @dep_constraint_crash_test(i32 %M, i32 %N) {
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%1 = icmp sgt i32 %N, 0
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br i1 %1, label %.preheader.lr.ph, label %35
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.preheader.lr.ph: ; preds = %0
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%2 = add nsw i32 %M, -2
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%3 = icmp slt i32 %M, 2
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%4 = add nsw i32 %M, -1
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%5 = sext i32 %4 to i64
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%6 = getelementptr inbounds [10 x [10 x i32]], [10 x [10 x i32]]* @c, i64 0, i64 0, i64 %5
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%7 = add nsw i32 %M, -1
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%out_l.promoted = load i32, i32* @out_l
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%8 = sext i32 %7 to i64
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%9 = sext i32 %2 to i64
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br label %.preheader
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.preheader: ; preds = %._crit_edge7, %.preheader.lr.ph
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%10 = phi i32 [ %out_l.promoted, %.preheader.lr.ph ], [ %33, %._crit_edge7 ]
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%iter.08 = phi i32 [ 0, %.preheader.lr.ph ], [ %34, %._crit_edge7 ]
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br i1 %3, label %._crit_edge7, label %.lr.ph6
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.loopexit: ; preds = %._crit_edge, %.lr.ph6
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%11 = icmp slt i64 %indvars.iv23, %9
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%indvars.iv.next18 = add nuw nsw i64 %indvars.iv17, 1
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%indvars.iv.next14 = add nuw i32 %indvars.iv13, 1
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br i1 %11, label %.lr.ph6, label %._crit_edge7
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.lr.ph6: ; preds = %.preheader, %.loopexit
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%indvars.iv23 = phi i64 [ %indvars.iv.next24, %.loopexit ], [ 0, %.preheader ]
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%indvars.iv17 = phi i64 [ %indvars.iv.next18, %.loopexit ], [ 1, %.preheader ]
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%indvars.iv13 = phi i32 [ %indvars.iv.next14, %.loopexit ], [ 1, %.preheader ]
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%indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
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%12 = icmp slt i64 %indvars.iv23, %8
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br i1 %12, label %.lr.ph4, label %.loopexit
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.lr.ph4: ; preds = %.lr.ph6, %._crit_edge
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%indvars.iv19 = phi i64 [ %indvars.iv.next20, %._crit_edge ], [ %indvars.iv17, %.lr.ph6 ]
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%indvars.iv15 = phi i32 [ %indvars.iv.next16, %._crit_edge ], [ %indvars.iv13, %.lr.ph6 ]
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%13 = getelementptr inbounds [10 x [10 x [10 x i32]]], [10 x [10 x [10 x i32]]]* @sum_c, i64 0, i64 %indvars.iv23, i64 %indvars.iv19, i64 %indvars.iv23
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store i32 0, i32* %13
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%14 = add nsw i64 %indvars.iv19, -1
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%15 = icmp slt i64 %indvars.iv23, %14
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br i1 %15, label %.lr.ph, label %._crit_edge
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.lr.ph: ; preds = %.lr.ph4, %.lr.ph
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%indvars.iv11 = phi i64 [ %indvars.iv.next12, %.lr.ph ], [ %indvars.iv17, %.lr.ph4 ]
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%16 = add nsw i64 %indvars.iv11, -1
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%17 = getelementptr inbounds [10 x [10 x [10 x i32]]], [10 x [10 x [10 x i32]]]* @sum_c, i64 0, i64 %indvars.iv23, i64 %indvars.iv19, i64 %16
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%18 = load i32, i32* %17
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%19 = getelementptr inbounds [10 x [10 x i32]], [10 x [10 x i32]]* @c, i64 0, i64 %indvars.iv23, i64 %indvars.iv11
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%20 = load i32, i32* %19
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%21 = add nsw i32 %20, %18
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%22 = getelementptr inbounds [10 x [10 x i32]], [10 x [10 x i32]]* @c, i64 0, i64 %indvars.iv11, i64 %indvars.iv19
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%23 = load i32, i32* %22
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%24 = add nsw i32 %21, %23
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%25 = getelementptr inbounds [10 x [10 x [10 x i32]]], [10 x [10 x [10 x i32]]]* @sum_c, i64 0, i64 %indvars.iv23, i64 %indvars.iv19, i64 %indvars.iv11
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store i32 %24, i32* %25
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%indvars.iv.next12 = add nuw nsw i64 %indvars.iv11, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next12 to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %indvars.iv15
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br i1 %exitcond, label %._crit_edge, label %.lr.ph
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._crit_edge: ; preds = %.lr.ph, %.lr.ph4
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%26 = getelementptr inbounds [10 x [10 x [10 x i32]]], [10 x [10 x [10 x i32]]]* @sum_c, i64 0, i64 %indvars.iv23, i64 %indvars.iv19, i64 %14
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%27 = load i32, i32* %26
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%28 = getelementptr inbounds [10 x [10 x i32]], [10 x [10 x i32]]* @W, i64 0, i64 %indvars.iv23, i64 %indvars.iv19
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%29 = load i32, i32* %28
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%30 = add nsw i32 %29, %27
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%31 = getelementptr inbounds [10 x [10 x i32]], [10 x [10 x i32]]* @c, i64 0, i64 %indvars.iv23, i64 %indvars.iv19
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store i32 %30, i32* %31
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%indvars.iv.next16 = add nuw i32 %indvars.iv15, 1
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%indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
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%lftr.wideiv21 = trunc i64 %indvars.iv.next20 to i32
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%exitcond22 = icmp eq i32 %lftr.wideiv21, %M
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br i1 %exitcond22, label %.loopexit, label %.lr.ph4
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._crit_edge7: ; preds = %.loopexit, %.preheader
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%32 = load i32, i32* %6
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%33 = add nsw i32 %10, %32
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%34 = add nuw nsw i32 %iter.08, 1
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%exitcond25 = icmp eq i32 %34, %N
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br i1 %exitcond25, label %._crit_edge9, label %.preheader
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._crit_edge9: ; preds = %._crit_edge7
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store i32 %33, i32* @out_l
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br label %35
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; <label>:35 ; preds = %._crit_edge9, %0
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ret void
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}
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