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| ; RUN: opt %loadPolly -polly-detect < %s
; This test case helps to determine wether SCEVRemoveMax::remove produces
; an infinite loop and a segmentation fault, if it processes, for example,
; '((-1 + (-1 * %b1)) umax {(-1 + (-1 * %yStart)),+,-1}<%.preheader>)'.
;
; In this case, the SCoP is invalid. However, SCoP detection failed when
; running over it.
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@vertPlane = external global i8*, align 8
define fastcc void @Maze2Mech(i64 %i, i64 %b1, i64 %yStart) {
.split:
br i1 undef, label %DrawSegment.exit, label %DrawSegment.exit34
DrawSegment.exit34: ; preds = %.split
%tmp = icmp ugt i64 %yStart, %b1
%tmp1 = select i1 %tmp, i64 %b1, i64 %yStart
%tmp2 = load i8*, i8** @vertPlane, align 8
%y.04.i21 = add i64 %tmp1, 1
br label %.lr.ph.i24
.lr.ph.i24: ; preds = %.lr.ph.i24, %DrawSegment.exit34
%y.05.i22 = phi i64 [ %y.0.i23, %.lr.ph.i24 ], [ %y.04.i21, %DrawSegment.exit34 ]
%tmp3 = mul i64 %y.05.i22, undef
%tmp4 = add i64 %tmp3, %i
%tmp5 = getelementptr inbounds i8, i8* %tmp2, i64 %tmp4
%tmp6 = load i8, i8* %tmp5, align 1
%y.0.i23 = add nuw i64 %y.05.i22, 1
br i1 false, label %bb, label %.lr.ph.i24
bb: ; preds = %.lr.ph.i24
unreachable
DrawSegment.exit: ; preds = %.split
ret void
}
|