1; RUN: opt < %s -indvars -S | not grep sext
2
3; Provide legal integer types.
4target datalayout = "n8:16:32:64"
5
6
7define i64 @test(i64* nocapture %first, i32 %count) nounwind readonly {
8entry:
9	%t0 = icmp sgt i32 %count, 0		; <i1> [#uses=1]
10	br i1 %t0, label %bb.nph, label %bb2
11
12bb.nph:		; preds = %entry
13	br label %bb
14
15bb:		; preds = %bb1, %bb.nph
16	%result.02 = phi i64 [ %t5, %bb1 ], [ 0, %bb.nph ]		; <i64> [#uses=1]
17	%n.01 = phi i32 [ %t6, %bb1 ], [ 0, %bb.nph ]		; <i32> [#uses=2]
18	%t1 = sext i32 %n.01 to i64		; <i64> [#uses=1]
19	%t2 = getelementptr i64, i64* %first, i64 %t1		; <i64*> [#uses=1]
20	%t3 = load i64, i64* %t2, align 8		; <i64> [#uses=1]
21	%t4 = lshr i64 %t3, 4		; <i64> [#uses=1]
22	%t5 = add i64 %t4, %result.02		; <i64> [#uses=2]
23	%t6 = add i32 %n.01, 1		; <i32> [#uses=2]
24	br label %bb1
25
26bb1:		; preds = %bb
27	%t7 = icmp slt i32 %t6, %count		; <i1> [#uses=1]
28	br i1 %t7, label %bb, label %bb1.bb2_crit_edge
29
30bb1.bb2_crit_edge:		; preds = %bb1
31	%.lcssa = phi i64 [ %t5, %bb1 ]		; <i64> [#uses=1]
32	br label %bb2
33
34bb2:		; preds = %bb1.bb2_crit_edge, %entry
35	%result.0.lcssa = phi i64 [ %.lcssa, %bb1.bb2_crit_edge ], [ 0, %entry ]		; <i64> [#uses=1]
36	ret i64 %result.0.lcssa
37}
38
39define void @foo(i16 signext %N, i32* nocapture %P) nounwind {
40entry:
41	%t0 = icmp sgt i16 %N, 0		; <i1> [#uses=1]
42	br i1 %t0, label %bb.nph, label %return
43
44bb.nph:		; preds = %entry
45	br label %bb
46
47bb:		; preds = %bb1, %bb.nph
48	%i.01 = phi i16 [ %t3, %bb1 ], [ 0, %bb.nph ]		; <i16> [#uses=2]
49	%t1 = sext i16 %i.01 to i64		; <i64> [#uses=1]
50	%t2 = getelementptr i32, i32* %P, i64 %t1		; <i32*> [#uses=1]
51	store i32 123, i32* %t2, align 4
52	%t3 = add i16 %i.01, 1		; <i16> [#uses=2]
53	br label %bb1
54
55bb1:		; preds = %bb
56	%t4 = icmp slt i16 %t3, %N		; <i1> [#uses=1]
57	br i1 %t4, label %bb, label %bb1.return_crit_edge
58
59bb1.return_crit_edge:		; preds = %bb1
60	br label %return
61
62return:		; preds = %bb1.return_crit_edge, %entry
63	ret void
64}
65
66; Test cases from PR1301:
67
68define void @kinds__srangezero([21 x i32]* nocapture %a) nounwind {
69bb.thread:
70  br label %bb
71
72bb:             ; preds = %bb, %bb.thread
73  %i.0.reg2mem.0 = phi i8 [ -10, %bb.thread ], [ %tmp7, %bb ]           ; <i8> [#uses=2]
74  %tmp12 = sext i8 %i.0.reg2mem.0 to i32                ; <i32> [#uses=1]
75  %tmp4 = add i32 %tmp12, 10            ; <i32> [#uses=1]
76  %tmp5 = getelementptr [21 x i32], [21 x i32]* %a, i32 0, i32 %tmp4                ; <i32*> [#uses=1]
77  store i32 0, i32* %tmp5
78  %tmp7 = add i8 %i.0.reg2mem.0, 1              ; <i8> [#uses=2]
79  %0 = icmp sgt i8 %tmp7, 10            ; <i1> [#uses=1]
80  br i1 %0, label %return, label %bb
81
82return:         ; preds = %bb
83  ret void
84}
85
86define void @kinds__urangezero([21 x i32]* nocapture %a) nounwind {
87bb.thread:
88  br label %bb
89
90bb:             ; preds = %bb, %bb.thread
91  %i.0.reg2mem.0 = phi i8 [ 10, %bb.thread ], [ %tmp7, %bb ]            ; <i8> [#uses=2]
92  %tmp12 = sext i8 %i.0.reg2mem.0 to i32                ; <i32> [#uses=1]
93  %tmp4 = add i32 %tmp12, -10           ; <i32> [#uses=1]
94  %tmp5 = getelementptr [21 x i32], [21 x i32]* %a, i32 0, i32 %tmp4                ; <i32*> [#uses=1]
95  store i32 0, i32* %tmp5
96  %tmp7 = add i8 %i.0.reg2mem.0, 1              ; <i8> [#uses=2]
97  %0 = icmp sgt i8 %tmp7, 30            ; <i1> [#uses=1]
98  br i1 %0, label %return, label %bb
99
100return:         ; preds = %bb
101  ret void
102}
103