1; RUN: opt < %s -indvars -loop-deletion -S | grep phi | count 1
2; XFAIL: *
3
4; Indvars can't evaluate this loop, because ScalarEvolution can't compute
5; an exact trip count, because it doesn't know if dividing by the stride will
6; have a remainder. It could be done with more aggressive VRP though.
7
8define i32 @test(i32 %x_offs) nounwind readnone {
9entry:
10	%0 = icmp sgt i32 %x_offs, 4		; <i1> [#uses=1]
11	br i1 %0, label %bb.nph, label %bb2
12
13bb.nph:		; preds = %entry
14	br label %bb
15
16bb:		; preds = %bb1, %bb.nph
17	%x_offs_addr.01 = phi i32 [ %1, %bb1 ], [ %x_offs, %bb.nph ]		; <i32> [#uses=1]
18	%1 = add i32 %x_offs_addr.01, -4		; <i32> [#uses=3]
19	br label %bb1
20
21bb1:		; preds = %bb
22	%2 = icmp sgt i32 %1, 4		; <i1> [#uses=1]
23	br i1 %2, label %bb, label %bb1.bb2_crit_edge
24
25bb1.bb2_crit_edge:		; preds = %bb1
26	br label %bb2
27
28bb2:		; preds = %bb1.bb2_crit_edge, %entry
29	%x_offs_addr.0.lcssa = phi i32 [ %1, %bb1.bb2_crit_edge ], [ %x_offs, %entry ]		; <i32> [#uses=1]
30	ret i32 %x_offs_addr.0.lcssa
31}
32