1; RUN: llc < %s -mcpu=a2 -verify-machineinstrs | FileCheck %s
2; RUN: llc < %s -mcpu=a2 -disable-lsr -verify-machineinstrs | FileCheck -check-prefix=NOLSR %s
3target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
4target triple = "powerpc64-unknown-linux-gnu"
5
6define void @main() #0 {
7entry:
8  br i1 undef, label %for.end, label %for.body
9
10for.body:                                         ; preds = %for.body, %entry
11  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 1, %entry ]
12  %indvars.iv.next = add i64 %indvars.iv, 1
13  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
14  %exitcond = icmp eq i32 %lftr.wideiv, 0
15  br i1 %exitcond, label %for.end, label %for.body
16
17; CHECK: @main
18; CHECK: li [[REG:[0-9]+]], 0
19; CHECK: oris [[REG2:[0-9]+]], [[REG]], 65535
20; CHECK: ori [[REG3:[0-9]+]], [[REG2]], 65535
21; CHECK: mtctr [[REG3]]
22; CHECK: bdnz
23
24for.end:                                          ; preds = %for.body, %entry
25  ret void
26}
27
28define void @main1() #0 {
29entry:
30  br i1 undef, label %for.end, label %for.body
31
32for.body:                                         ; preds = %for.body, %entry
33  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 1, %entry ]
34  %indvars.iv.next = add i64 %indvars.iv, 1
35  %exitcond = icmp eq i64 %indvars.iv.next, 0
36  br i1 %exitcond, label %for.end, label %for.body
37
38; FIXME: This should be a hardware loop.
39; cmp is optimized to uadd intrinsic in CGP pass which can not be recognized in
40; later HardwareLoops Pass.
41; CHECK: @main1
42; CHECK: li [[REG:[0-9]+]], 1
43; CHECK: addi [[REG2:[0-9]+]], [[REG]], 1
44; CHECK: cmpld
45; CHECK: bge
46
47for.end:                                          ; preds = %for.body, %entry
48  ret void
49}
50
51define void @main2() #0 {
52entry:
53  br i1 undef, label %for.end, label %for.body
54
55for.body:                                         ; preds = %for.body, %entry
56  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 1, %entry ]
57  %indvars.iv.next = add i64 %indvars.iv, 1
58  %exitcond = icmp eq i64 %indvars.iv.next, -100000
59  br i1 %exitcond, label %for.end, label %for.body
60
61; CHECK: @main2
62; CHECK: lis [[REG:[0-9]+]], -2
63; CHECK: ori [[REG2:[0-9]+]], [[REG]], 31071
64; CHECK: mtctr [[REG2]]
65; CHECK: bdnz
66
67for.end:                                          ; preds = %for.body, %entry
68  ret void
69}
70
71define void @main3() #0 {
72entry:
73  br i1 undef, label %for.end, label %for.body
74
75for.body:                                         ; preds = %for.body, %entry
76  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 127984, %entry ]
77  %indvars.iv.next = add i64 %indvars.iv, -16
78  %exitcond = icmp eq i64 %indvars.iv.next, -16
79  br i1 %exitcond, label %for.end, label %for.body
80
81; NOLSR: @main3
82; NOLSR: li [[REG:[0-9]+]], 8000
83; NOLSR: mtctr [[REG]]
84; NOLSR: bdnz
85
86for.end:                                          ; preds = %for.body, %entry
87  ret void
88}
89
90attributes #0 = { nounwind "less-precise-fpmad"="false" "frame-pointer"="non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
91