summaryrefslogtreecommitdiffstats
path: root/llvm/test/Transforms/SimplifyCFG/ARM/switch-to-lookup-table.ll
blob: 5c50b27c955c9ba33e7d9aa9937acd522d3d5997 (plain)
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
137
138
139
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -simplifycfg -switch-to-lookup -mtriple=arm -relocation-model=static    < %s | FileCheck %s --check-prefix=CHECK --check-prefix=ENABLE
; RUN: opt -S -simplifycfg -switch-to-lookup -mtriple=arm -relocation-model=pic       < %s | FileCheck %s --check-prefix=CHECK --check-prefix=ENABLE
; RUN: opt -S -simplifycfg -switch-to-lookup -mtriple=arm -relocation-model=ropi      < %s | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLE
; RUN: opt -S -simplifycfg -switch-to-lookup -mtriple=arm -relocation-model=rwpi      < %s | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLE
; RUN: opt -S -simplifycfg -switch-to-lookup -mtriple=arm -relocation-model=ropi-rwpi < %s | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLE

; RUN: opt -S -passes='simplify-cfg<switch-to-lookup>' -mtriple=arm -relocation-model=static    < %s | FileCheck %s --check-prefix=CHECK --check-prefix=ENABLE
; RUN: opt -S -passes='simplify-cfg<switch-to-lookup>' -mtriple=arm -relocation-model=pic       < %s | FileCheck %s --check-prefix=CHECK --check-prefix=ENABLE
; RUN: opt -S -passes='simplify-cfg<switch-to-lookup>' -mtriple=arm -relocation-model=ropi      < %s | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLE
; RUN: opt -S -passes='simplify-cfg<switch-to-lookup>' -mtriple=arm -relocation-model=rwpi      < %s | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLE
; RUN: opt -S -passes='simplify-cfg<switch-to-lookup>' -mtriple=arm -relocation-model=ropi-rwpi < %s | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLE

; CHECK:       @{{.*}} = private unnamed_addr constant [3 x i32] [i32 1234, i32 5678, i32 15532]
; ENABLE:      @{{.*}} = private unnamed_addr constant [3 x i32*] [i32* @c1, i32* @c2, i32* @c3]
; DISABLE-NOT: @{{.*}} = private unnamed_addr constant [3 x i32*] [i32* @c1, i32* @c2, i32* @c3]
; ENABLE:      @{{.*}} = private unnamed_addr constant [3 x i32*] [i32* @g1, i32* @g2, i32* @g3]
; DISABLE-NOT: @{{.*}} = private unnamed_addr constant [3 x i32*] [i32* @g1, i32* @g2, i32* @g3]
; ENABLE:      @{{.*}} = private unnamed_addr constant [3 x i32 (i32, i32)*] [i32 (i32, i32)* @f1, i32 (i32, i32)* @f2, i32 (i32, i32)* @f3]
; DISABLE-NOT: @{{.*}} = private unnamed_addr constant [3 x i32 (i32, i32)*] [i32 (i32, i32)* @f1, i32 (i32, i32)* @f2, i32 (i32, i32)* @f3]

target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "armv7a--none-eabi"

define i32 @test1(i32 %n) {
entry:
  switch i32 %n, label %sw.default [
  i32 0, label %sw.bb
  i32 1, label %sw.bb1
  i32 2, label %sw.bb2
  ]

sw.bb:
  br label %return

sw.bb1:
  br label %return

sw.bb2:
  br label %return

sw.default:
  br label %return

return:
  %retval.0 = phi i32 [ 15498, %sw.default ], [ 15532, %sw.bb2 ], [ 5678, %sw.bb1 ], [ 1234, %sw.bb ]
  ret i32 %retval.0
}

@c1 = external constant i32, align 4
@c2 = external constant i32, align 4
@c3 = external constant i32, align 4
@c4 = external constant i32, align 4


define i32* @test2(i32 %n) {
entry:
  switch i32 %n, label %sw.default [
  i32 0, label %sw.bb
  i32 1, label %sw.bb1
  i32 2, label %sw.bb2
  ]

sw.bb:
  br label %return

sw.bb1:
  br label %return

sw.bb2:
  br label %return

sw.default:
  br label %return

return:
  %retval.0 = phi i32* [ @c4, %sw.default ], [ @c3, %sw.bb2 ], [ @c2, %sw.bb1 ], [ @c1, %sw.bb ]
  ret i32* %retval.0
}

@g1 = external global i32, align 4
@g2 = external global i32, align 4
@g3 = external global i32, align 4
@g4 = external global i32, align 4

define i32* @test3(i32 %n) {
entry:
  switch i32 %n, label %sw.default [
  i32 0, label %sw.bb
  i32 1, label %sw.bb1
  i32 2, label %sw.bb2
  ]

sw.bb:
  br label %return

sw.bb1:
  br label %return

sw.bb2:
  br label %return

sw.default:
  br label %return

return:
  %retval.0 = phi i32* [ @g4, %sw.default ], [ @g3, %sw.bb2 ], [ @g2, %sw.bb1 ], [ @g1, %sw.bb ]
  ret i32* %retval.0
}

declare i32 @f1(i32, i32)
declare i32 @f2(i32, i32)
declare i32 @f3(i32, i32)
declare i32 @f4(i32, i32)
declare i32 @f5(i32, i32)

define i32 @test4(i32 %a, i32 %b, i32 %c) {
entry:
  %cmp = icmp eq i32 %a, 1
  br i1 %cmp, label %cond.end11, label %cond.false

cond.false:
  %cmp1 = icmp eq i32 %a, 2
  br i1 %cmp1, label %cond.end11, label %cond.false3

cond.false3:
  %cmp4 = icmp eq i32 %a, 3
  br i1 %cmp4, label %cond.end11, label %cond.false6

cond.false6:
  %cmp7 = icmp eq i32 %a, 4
  %cond = select i1 %cmp7, i32 (i32, i32)* @f4, i32 (i32, i32)* @f5
  br label %cond.end11

cond.end11:
  %cond12 = phi i32 (i32, i32)* [ @f1, %entry ], [ @f2, %cond.false ], [ %cond, %cond.false6 ], [ @f3, %cond.false3 ]
  %call = call i32 %cond12(i32 %b, i32 %c) #2
  ret i32 %call
}
OpenPOWER on IntegriCloud