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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs -mtriple=arm-unknown-linux < %s | FileCheck %s
; Check CSR split can work properly for tests below.
@a = common dso_local local_unnamed_addr global i32 0, align 4
define dso_local signext i32 @test1(ptr %b) local_unnamed_addr {
; CHECK-LABEL: test1:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: ldr r1, .LCPI0_0
; CHECK-NEXT: ldr r1, [r1]
; CHECK-NEXT: cmp r1, r0
; CHECK-NEXT: movne pc, lr
; CHECK-NEXT: .LBB0_1: @ %if.then
; CHECK-NEXT: push {r4, lr}
; CHECK-NEXT: mov r4, r0
; CHECK-NEXT: bl callVoid
; CHECK-NEXT: mov r0, r4
; CHECK-NEXT: pop {r4, lr}
; CHECK-NEXT: b callNonVoid
; CHECK-NEXT: .p2align 2
; CHECK-NEXT: @ %bb.2:
; CHECK-NEXT: .LCPI0_0:
; CHECK-NEXT: .long a
entry:
%0 = load i32, ptr @a, align 4, !tbaa !2
%conv = sext i32 %0 to i64
%1 = inttoptr i64 %conv to ptr
%cmp = icmp eq ptr %1, %b
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
%call = tail call signext i32 @callVoid()
%call2 = tail call signext i32 @callNonVoid(ptr %b)
br label %if.end
if.end: ; preds = %if.then, %entry
%retval.0 = phi i32 [ %call2, %if.then ], [ undef, %entry ]
ret i32 %retval.0
}
declare signext i32 @callVoid(...) local_unnamed_addr
declare signext i32 @callNonVoid(ptr) local_unnamed_addr
define dso_local signext i32 @test2(ptr %p1) local_unnamed_addr {
; CHECK-LABEL: test2:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: cmp r0, #0
; CHECK-NEXT: beq .LBB1_2
; CHECK-NEXT: @ %bb.1: @ %if.end
; CHECK-NEXT: ldr r1, .LCPI1_0
; CHECK-NEXT: ldr r1, [r1]
; CHECK-NEXT: cmp r1, r0
; CHECK-NEXT: beq .LBB1_3
; CHECK-NEXT: .LBB1_2: @ %return
; CHECK-NEXT: mov r0, #0
; CHECK-NEXT: mov pc, lr
; CHECK-NEXT: .LBB1_3: @ %if.then2
; CHECK-NEXT: push {r4, lr}
; CHECK-NEXT: mov r4, r0
; CHECK-NEXT: bl callVoid
; CHECK-NEXT: mov r0, r4
; CHECK-NEXT: pop {r4, lr}
; CHECK-NEXT: b callNonVoid
; CHECK-NEXT: .p2align 2
; CHECK-NEXT: @ %bb.4:
; CHECK-NEXT: .LCPI1_0:
; CHECK-NEXT: .long a
entry:
%tobool = icmp eq ptr %p1, null
br i1 %tobool, label %return, label %if.end
if.end: ; preds = %entry
%0 = load i32, ptr @a, align 4, !tbaa !2
%conv = sext i32 %0 to i64
%1 = inttoptr i64 %conv to ptr
%cmp = icmp eq ptr %1, %p1
br i1 %cmp, label %if.then2, label %return
if.then2: ; preds = %if.end
%call = tail call signext i32 @callVoid()
%call3 = tail call signext i32 @callNonVoid(ptr nonnull %p1)
br label %return
return: ; preds = %if.end, %entry, %if.then2
%retval.0 = phi i32 [ %call3, %if.then2 ], [ 0, %entry ], [ 0, %if.end ]
ret i32 %retval.0
}
define dso_local ptr @test3(ptr nocapture %p1, i8 zeroext %p2) local_unnamed_addr {
; CHECK-LABEL: test3:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: push {r4, r5, r11, lr}
; CHECK-NEXT: ldr r4, [r0]
; CHECK-NEXT: cmp r4, #0
; CHECK-NEXT: beq .LBB2_2
; CHECK-NEXT: @ %bb.1: @ %land.rhs
; CHECK-NEXT: mov r5, r0
; CHECK-NEXT: mov r0, r4
; CHECK-NEXT: bl bar
; CHECK-NEXT: str r0, [r5]
; CHECK-NEXT: .LBB2_2: @ %land.end
; CHECK-NEXT: mov r0, r4
; CHECK-NEXT: pop {r4, r5, r11, lr}
; CHECK-NEXT: mov pc, lr
entry:
%0 = load ptr, ptr %p1, align 8, !tbaa !6
%tobool = icmp eq ptr %0, null
br i1 %tobool, label %land.end, label %land.rhs
land.rhs: ; preds = %entry
%call = tail call ptr @bar(ptr nonnull %0, i8 zeroext %p2)
store ptr %call, ptr %p1, align 8, !tbaa !6
br label %land.end
land.end: ; preds = %entry, %land.rhs
ret ptr %0
}
declare ptr @bar(ptr, i8 zeroext) local_unnamed_addr
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{!"clang version 10.0.0 (trunk 367381) (llvm/trunk 367388)"}
!2 = !{!3, !3, i64 0}
!3 = !{!"int", !4, i64 0}
!4 = !{!"omnipotent char", !5, i64 0}
!5 = !{!"Simple C/C++ TBAA"}
!6 = !{!7, !7, i64 0}
!7 = !{!"any pointer", !4, i64 0}
|