forked from OSchip/llvm-project
41 lines
1.4 KiB
LLVM
41 lines
1.4 KiB
LLVM
; RUN: opt %loadPolly -polly-detect < %s
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; This test case helps to determine wether SCEVRemoveMax::remove produces
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; an infinite loop and a segmentation fault, if it processes, for example,
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; '((-1 + (-1 * %b1)) umax {(-1 + (-1 * %yStart)),+,-1}<%.preheader>)'.
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;
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; In this case, the SCoP is invalid. However, SCoP detection failed when
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; running over it.
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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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@vertPlane = external global i8*, align 8
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define fastcc void @Maze2Mech(i64 %i, i64 %b1, i64 %yStart) {
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.split:
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br i1 undef, label %DrawSegment.exit, label %DrawSegment.exit34
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DrawSegment.exit34: ; preds = %.split
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%tmp = icmp ugt i64 %yStart, %b1
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%tmp1 = select i1 %tmp, i64 %b1, i64 %yStart
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%tmp2 = load i8*, i8** @vertPlane, align 8
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%y.04.i21 = add i64 %tmp1, 1
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br label %.lr.ph.i24
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.lr.ph.i24: ; preds = %.lr.ph.i24, %DrawSegment.exit34
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%y.05.i22 = phi i64 [ %y.0.i23, %.lr.ph.i24 ], [ %y.04.i21, %DrawSegment.exit34 ]
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%tmp3 = mul i64 %y.05.i22, undef
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%tmp4 = add i64 %tmp3, %i
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%tmp5 = getelementptr inbounds i8, i8* %tmp2, i64 %tmp4
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%tmp6 = load i8, i8* %tmp5, align 1
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%y.0.i23 = add nuw i64 %y.05.i22, 1
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br i1 false, label %bb, label %.lr.ph.i24
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bb: ; preds = %.lr.ph.i24
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unreachable
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DrawSegment.exit: ; preds = %.split
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ret void
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}
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