constMaterialization.ll
2.43 KB
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
; RUN: llc -march=mips < %s | FileCheck %s -check-prefixes=ALL,MIPS
; RUN: llc -march=mips < %s -mattr=+micromips | FileCheck %s -check-prefixes=ALL,MM
; Test the patterns used for constant materialization.
; Constants generated using li16
define i32 @Li16LowBoundary() {
entry:
; ALL-LABEL: Li16LowBoundary:
; MIPS: addiu $2, $zero, -1
; MM: li16 $2, -1
; ALL-NOT: lui
; ALL-NOT: ori
; MIPS-NOT: li16
; MM-NOT: addiu
ret i32 -1
}
define i32 @Li16HighBoundary() {
entry:
; ALL-LABEL: Li16HighBoundary:
; MIPS: addiu $2, $zero, 126
; MM: li16 $2, 126
; ALL-NOT: lui
; ALL-NOT: ori
; MM-NOT: addiu
; MIPS-NOT: li16
ret i32 126
}
; Constants generated using addiu
define i32 @AddiuLowBoundary() {
entry:
; ALL-LABEL: AddiuLowBoundary:
; ALL: addiu $2, $zero, -32768
; ALL-NOT: lui
; ALL-NOT: ori
; ALL-NOT: li16
ret i32 -32768
}
define i32 @AddiuZero() {
entry:
; ALL-LABEL: AddiuZero:
; MIPS: addiu $2, $zero, 0
; MM: li16 $2, 0
; ALL-NOT: lui
; ALL-NOT: ori
; MIPS-NOT: li16
; MM-NOT: addiu
ret i32 0
}
define i32 @AddiuHighBoundary() {
entry:
; ALL-LABEL: AddiuHighBoundary:
; ALL: addiu $2, $zero, 32767
; ALL-NOT: lui
; ALL-NOT: ori
; ALL-NOT: li16
ret i32 32767
}
; Constants generated using ori
define i32 @OriLowBoundary() {
entry:
; ALL-LABEL: OriLowBoundary:
; ALL: ori $2, $zero, 32768
; ALL-NOT: addiu
; ALL-NOT: lui
; ALL-NOT: li16
ret i32 32768
}
define i32 @OriHighBoundary() {
entry:
; ALL-LABEL: OriHighBoundary:
; ALL: ori $2, $zero, 65535
; ALL-NOT: addiu
; ALL-NOT: lui
; ALL-NOT: li16
ret i32 65535
}
; Constants generated using lui
define i32 @LuiPositive() {
entry:
; ALL-LABEL: LuiPositive:
; ALL: lui $2, 1
; ALL-NOT: addiu
; ALL-NOT: ori
; ALL-NOT: li16
ret i32 65536
}
define i32 @LuiNegative() {
entry:
; ALL-LABEL: LuiNegative:
; ALL: lui $2, 65535
; ALL-NOT: addiu
; ALL-NOT: ori
; ALL-NOT: li16
ret i32 -65536
}
; Constants generated using a combination of lui and ori
define i32 @LuiWithLowBitsSet() {
entry:
; ALL-LABEL: LuiWithLowBitsSet:
; ALL: lui $1, 1
; ALL: ori $2, $1, 1
; ALL-NOT: addiu
; ALL-NOT: li16
ret i32 65537
}
define i32 @BelowAddiuLowBoundary() {
entry:
; ALL-LABEL: BelowAddiuLowBoundary:
; ALL: lui $1, 65535
; ALL: ori $2, $1, 32767
; ALL-NOT: addiu
; ALL-NOT: li16
ret i32 -32769
}