1; RUN: llc -verify-machineinstrs -mtriple=aarch64-linux-gnueabi < %s | FileCheck %s
2
3; CHECK-LABEL: test1
4; CHECK: tbz {{w[0-9]}}, #3, {{.LBB0_3}}
5; CHECK: tbz w[[REG1:[0-9]+]], #2, {{.LBB0_3}}
6; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]], #0x4
7; CHECK-NOT: cbz [[REG2]], {{.LBB0_3}}
8
9; CHECK: b
10define void @test1(i64 %A, i64 %B) {
11entry:
12  %and = and i64 %A, 4
13  %notlhs = icmp eq i64 %and, 0
14  %and.1 = and i64 %B, 8
15  %0 = icmp eq i64 %and.1, 0
16  %1 = or i1 %0, %notlhs
17  br i1 %1, label %if.end3, label %if.then2
18
19if.then2:                                         ; preds = %entry
20  tail call void @foo(i64 %A, i64 %B)
21  br label %if.end3
22
23if.end3:                                          ; preds = %if.then2, %entry
24  ret void
25}
26
27; CHECK-LABEL: test2
28; CHECK: cbz {{x[0-9]}}, {{.LBB1_3}}
29; CHECK: tbz w[[REG1:[0-9]+]], #3, {{.LBB1_3}}
30; CHECK-NOT: and [REG2:x[0-9]+], x[[REG1]], #0x08
31; CHECK-NOT: cbz [[REG2]], {{.LBB1_3}}
32
33define void @test2(i64 %A, i64* readonly %B) #0 {
34entry:
35  %tobool = icmp eq i64* %B, null
36  %and = and i64 %A, 8
37  %tobool1 = icmp eq i64 %and, 0
38  %or.cond = or i1 %tobool, %tobool1
39  br i1 %or.cond, label %if.end3, label %if.then2
40
41if.then2:                                         ; preds = %entry
42  %0 = load i64, i64* %B, align 4
43  tail call void @foo(i64 %A, i64 %0)
44  br label %if.end3
45
46if.end3:                                          ; preds = %entry, %if.then2
47  ret void
48}
49
50; Make sure we use the W variant when log2(mask) is < 32.
51; CHECK-LABEL: test3
52; CHECK: tbz {{w[0-9]}}, #3, {{.LBB2_3}}
53; CHECK: tbz w[[REG1:[0-9]+]], #28, {{.LBB2_3}}
54; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]]
55; CHECK-NOT: cbz [[REG2]], {{.LBB2_3}}
56define void @test3(i64 %A, i64 %B) {
57entry:
58  %shift = shl i64 1, 28
59  %and = and i64 %A, %shift
60  %notlhs = icmp eq i64 %and, 0
61  %and.1 = and i64 %B, 8
62  %0 = icmp eq i64 %and.1, 0
63  %1 = or i1 %0, %notlhs
64  br i1 %1, label %if.then2, label %if.end3
65
66if.then2:                                         ; preds = %entry
67  tail call void @foo(i64 %A, i64 %B)
68  br label %if.end3
69
70if.end3:                                          ; preds = %if.then2, %entry
71  ret void
72}
73
74; CHECK-LABEL: test4
75; CHECK: tbz {{w[0-9]}}, #3, {{.LBB3_3}}
76; CHECK: tbz [[REG1:x[0-9]+]], #35, {{.LBB3_3}}
77; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]]
78; CHECK-NOT: cbz [[REG2]], {{.LBB2_3}}
79define void @test4(i64 %A, i64 %B) {
80entry:
81  %shift = shl i64 1, 35
82  %and = and i64 %A, %shift
83  %notlhs = icmp eq i64 %and, 0
84  %and.1 = and i64 %B, 8
85  %0 = icmp eq i64 %and.1, 0
86  %1 = or i1 %0, %notlhs
87  br i1 %1, label %if.then2, label %if.end3
88
89if.then2:                                         ; preds = %entry
90  tail call void @foo(i64 %A, i64 %B)
91  br label %if.end3
92
93if.end3:                                          ; preds = %if.then2, %entry
94  ret void
95}
96
97
98declare void @foo(i64, i64)
99