1; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
2; PR3275
3
4; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'func_15'
5; CHECK-NOT: /u -1
6
7@g_16 = external global i16		; <i16*> [#uses=3]
8@.str = external constant [4 x i8]		; <[4 x i8]*> [#uses=0]
9
10define void @func_15() nounwind {
11entry:
12	%0 = load i16* @g_16, align 2		; <i16> [#uses=1]
13	%1 = icmp sgt i16 %0, 0		; <i1> [#uses=1]
14	br i1 %1, label %bb2, label %bb.nph
15
16bb.nph:		; preds = %entry
17	%g_16.promoted = load i16* @g_16		; <i16> [#uses=1]
18	br label %bb
19
20bb:		; preds = %bb1, %bb.nph
21	%g_16.tmp.0 = phi i16 [ %g_16.promoted, %bb.nph ], [ %2, %bb1 ]		; <i16> [#uses=1]
22	%2 = add i16 %g_16.tmp.0, -1		; <i16> [#uses=3]
23	br label %bb1
24
25bb1:		; preds = %bb
26	%3 = icmp sgt i16 %2, 0		; <i1> [#uses=1]
27	br i1 %3, label %bb1.bb2_crit_edge, label %bb
28
29bb1.bb2_crit_edge:		; preds = %bb1
30	store i16 %2, i16* @g_16
31	br label %bb2
32
33bb2:		; preds = %bb1.bb2_crit_edge, %entry
34	br label %return
35
36return:		; preds = %bb2
37	ret void
38}
39
40declare i32 @main() nounwind
41
42declare i32 @printf(i8*, ...) nounwind
43
44