1; RUN: opt < %s -indvars -S | FileCheck %s
2define void @test1() nounwind {
3entry:
4	br label %bb
5
6bb:		; preds = %bb, %entry
7	%x.0.reg2mem.0 = phi double [ 0.000000e+00, %entry ], [ %1, %bb ]		; <double> [#uses=2]
8	%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind		; <i32> [#uses=0]
9	%1 = fadd double %x.0.reg2mem.0, 1.000000e+00		; <double> [#uses=2]
10	%2 = fcmp olt double %1, 1.000000e+04		; <i1> [#uses=1]
11	br i1 %2, label %bb, label %return
12
13return:		; preds = %bb
14	ret void
15; CHECK-LABEL: @test1(
16; CHECK: icmp
17}
18
19declare i32 @foo(double)
20
21define void @test2() nounwind {
22entry:
23	br label %bb
24
25bb:		; preds = %bb, %entry
26	%x.0.reg2mem.0 = phi double [ -10.000000e+00, %entry ], [ %1, %bb ]		; <double> [#uses=2]
27	%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind		; <i32> [#uses=0]
28	%1 = fadd double %x.0.reg2mem.0, 2.000000e+00		; <double> [#uses=2]
29	%2 = fcmp olt double %1, -1.000000e+00		; <i1> [#uses=1]
30	br i1 %2, label %bb, label %return
31
32return:		; preds = %bb
33	ret void
34; CHECK-LABEL: @test2(
35; CHECK: icmp
36}
37
38
39define void @test3() nounwind {
40entry:
41	br label %bb
42
43bb:		; preds = %bb, %entry
44	%x.0.reg2mem.0 = phi double [ 0.000000e+00, %entry ], [ %1, %bb ]
45	%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind
46	%1 = fadd double %x.0.reg2mem.0, 1.000000e+00
47	%2 = fcmp olt double %1, -1.000000e+00
48	br i1 %2, label %bb, label %return
49
50return:
51	ret void
52; CHECK-LABEL: @test3(
53; CHECK: fcmp
54}
55
56define void @test4() nounwind {
57entry:
58	br label %bb
59
60bb:		; preds = %bb, %entry
61	%x.0.reg2mem.0 = phi double [ 40.000000e+00, %entry ], [ %1, %bb ]		; <double> [#uses=2]
62	%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind		; <i32> [#uses=0]
63	%1 = fadd double %x.0.reg2mem.0, -1.000000e+00		; <double> [#uses=2]
64	%2 = fcmp olt double %1, 1.000000e+00		; <i1> [#uses=1]
65	br i1 %2, label %bb, label %return
66
67return:
68	ret void
69; CHECK-LABEL: @test4(
70; CHECK-NOT: cmp
71; CHECK: br i1 false
72}
73
74; PR6761
75define void @test5() nounwind {
76; <label>:0
77  br label %1
78
79; <label>:1                                       ; preds = %1, %0
80  %2 = phi double [ 9.000000e+00, %0 ], [ %4, %1 ] ; <double> [#uses=1]
81  %3 = tail call i32 @foo(double 0.0)              ; <i32> [#uses=0]
82  %4 = fadd double %2, -1.000000e+00              ; <double> [#uses=2]
83  %5 = fcmp ult double %4, 0.000000e+00           ; <i1> [#uses=1]
84  br i1 %5, label %exit, label %1
85
86exit:
87  ret void
88
89; CHECK-LABEL: @test5(
90; CHECK: icmp slt i32 {{.*}}, 0
91; CHECK-NEXT: br i1
92}
93