1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
; RUN: llc < %s -march=x86-64 | FileCheck %s
declare void @bar()
define void @test1(i32* nocapture %X) nounwind minsize {
entry:
%tmp1 = load i32* %X, align 4
%and = and i32 %tmp1, 255
%cmp = icmp eq i32 %and, 47
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
; CHECK-LABEL: test1:
; CHECK: cmpb $47, (%{{rdi|rcx}})
}
define void @test2(i32 %X) nounwind minsize {
entry:
%and = and i32 %X, 255
%cmp = icmp eq i32 %and, 47
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
; CHECK-LABEL: test2:
; CHECK: cmpb $47, %{{dil|cl}}
}
define void @test3(i32 %X) nounwind minsize {
entry:
%and = and i32 %X, 255
%cmp = icmp eq i32 %and, 255
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
; CHECK-LABEL: test3:
; CHECK: cmpb $-1, %{{dil|cl}}
}
; PR16083
define i1 @test4(i64 %a, i32 %b) {
entry:
%tobool = icmp ne i32 %b, 0
br i1 %tobool, label %lor.end, label %lor.rhs
lor.rhs: ; preds = %entry
%and = and i64 0, %a
%tobool1 = icmp ne i64 %and, 0
br label %lor.end
lor.end: ; preds = %lor.rhs, %entry
%p = phi i1 [ true, %entry ], [ %tobool1, %lor.rhs ]
ret i1 %p
}
@x = global { i8, i8, i8, i8, i8, i8, i8, i8 } { i8 1, i8 0, i8 0, i8 0, i8 1, i8 0, i8 0, i8 1 }, align 4
; PR16551
define void @test5(i32 %X) nounwind minsize {
entry:
%bf.load = load i56* bitcast ({ i8, i8, i8, i8, i8, i8, i8, i8 }* @x to i56*), align 4
%bf.lshr = lshr i56 %bf.load, 32
%bf.cast = trunc i56 %bf.lshr to i32
%cmp = icmp ne i32 %bf.cast, 1
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
; CHECK-LABEL: test5:
; CHECK-NOT: cmpl $1,{{.*}}x+4
; CHECK: ret
}
|
