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
140
141
142
143
144
145
146
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
; RUN: opt < %s -passes=argpromotion -S | FileCheck %s
target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
%struct.ss = type { i32, i64 }
define internal void @f(ptr byval(%struct.ss) align 4 %b) nounwind {
; CHECK-LABEL: define {{[^@]+}}@f
; CHECK-SAME: (i32 [[B_0_VAL:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TEMP2:%.*]] = add i32 [[B_0_VAL]], 1
; CHECK-NEXT: ret void
;
entry:
%temp1 = load i32, ptr %b, align 4
%temp2 = add i32 %temp1, 1
store i32 %temp2, ptr %b, align 4
ret void
}
define internal void @g(ptr byval(%struct.ss) align 32 %b) nounwind {
; CHECK-LABEL: define {{[^@]+}}@g
; CHECK-SAME: (i32 [[B_0_VAL:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TEMP2:%.*]] = add i32 [[B_0_VAL]], 1
; CHECK-NEXT: ret void
;
entry:
%temp1 = load i32, ptr %b, align 4
%temp2 = add i32 %temp1, 1
store i32 %temp2, ptr %b, align 4
ret void
}
; Don't transform if alignment isn't specified; the actual alignment
; is target-specific, and not exposed anywhere.
;
; (If we ever change byval so a missing alignment isn't legal, we can
; just delete this test.)
define internal void @h(ptr byval(%struct.ss) %b) nounwind {
; CHECK-LABEL: define {{[^@]+}}@h
; CHECK-SAME: (ptr byval([[STRUCT_SS:%.*]]) [[B:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TEMP1:%.*]] = load i32, ptr [[B]], align 4
; CHECK-NEXT: [[TEMP2:%.*]] = add i32 [[TEMP1]], 1
; CHECK-NEXT: store i32 [[TEMP2]], ptr [[B]], align 4
; CHECK-NEXT: ret void
;
entry:
%temp1 = load i32, ptr %b, align 4
%temp2 = add i32 %temp1, 1
store i32 %temp2, ptr %b, align 4
ret void
}
; Transform even if an argument is written to and then is loaded from.
define internal void @k(ptr byval(%struct.ss) align 4 %b) nounwind {
; CHECK-LABEL: define {{[^@]+}}@k
; CHECK-SAME: (i32 [[B_0_VAL:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TEMP2:%.*]] = add i32 [[B_0_VAL]], 1
; CHECK-NEXT: ret void
;
entry:
%temp1 = load i32, ptr %b, align 4
%temp2 = add i32 %temp1, 1
store i32 %temp2, ptr %b, align 4
%temp3 = load i32, ptr %b, align 4
ret void
}
; Transform even if a store instruction is the single user.
define internal void @l(ptr byval(%struct.ss) align 4 %b) nounwind {
; CHECK-LABEL: define {{[^@]+}}@l
; CHECK-SAME: (i32 [[B_0_VAL:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: ret void
;
entry:
store i32 1, ptr %b, align 4
ret void
}
; Transform all the arguments creating the required number of 'alloca's and
; then optimize them out.
define internal void @m(ptr byval(%struct.ss) align 4 %b, ptr byval(%struct.ss) align 4 %c) nounwind {
; CHECK-LABEL: define {{[^@]+}}@m
; CHECK-SAME: (i32 [[B_0_VAL:%.*]], i32 [[C_0_VAL:%.*]], i64 [[C_4_VAL:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TEMP2:%.*]] = add i32 [[B_0_VAL]], 1
; CHECK-NEXT: [[TEMP6:%.*]] = add i64 [[C_4_VAL]], 1
; CHECK-NEXT: ret void
;
entry:
%temp1 = load i32, ptr %b, align 4
%temp2 = add i32 %temp1, 1
store i32 %temp2, ptr %b, align 4
store i32 %temp2, ptr %c, align 4
%temp4 = getelementptr %struct.ss, ptr %c, i32 0, i32 1
%temp5 = load i64, ptr %temp4, align 8
%temp6 = add i64 %temp5, 1
store i64 %temp6, ptr %temp4, align 8
ret void
}
define i32 @main() nounwind {
; CHECK-LABEL: define {{[^@]+}}@main
; CHECK-SAME: () #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[S:%.*]] = alloca [[STRUCT_SS:%.*]], align 32
; CHECK-NEXT: store i32 1, ptr [[S]], align 8
; CHECK-NEXT: [[TEMP4:%.*]] = getelementptr [[STRUCT_SS]], ptr [[S]], i32 0, i32 1
; CHECK-NEXT: store i64 2, ptr [[TEMP4]], align 4
; CHECK-NEXT: [[S_VAL:%.*]] = load i32, ptr [[S]], align 4
; CHECK-NEXT: call void @f(i32 [[S_VAL]])
; CHECK-NEXT: [[S_VAL1:%.*]] = load i32, ptr [[S]], align 4
; CHECK-NEXT: call void @g(i32 [[S_VAL1]])
; CHECK-NEXT: call void @h(ptr byval([[STRUCT_SS]]) [[S]])
; CHECK-NEXT: [[S_VAL2:%.*]] = load i32, ptr [[S]], align 4
; CHECK-NEXT: call void @k(i32 [[S_VAL2]])
; CHECK-NEXT: [[S_VAL3:%.*]] = load i32, ptr [[S]], align 4
; CHECK-NEXT: call void @l(i32 [[S_VAL3]])
; CHECK-NEXT: [[S_VAL4:%.*]] = load i32, ptr [[S]], align 4
; CHECK-NEXT: [[S_VAL5:%.*]] = load i32, ptr [[S]], align 4
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr i8, ptr [[S]], i64 4
; CHECK-NEXT: [[S_VAL6:%.*]] = load i64, ptr [[TMP0]], align 8
; CHECK-NEXT: call void @m(i32 [[S_VAL4]], i32 [[S_VAL5]], i64 [[S_VAL6]])
; CHECK-NEXT: ret i32 0
;
entry:
%S = alloca %struct.ss, align 32
store i32 1, ptr %S, align 8
%temp4 = getelementptr %struct.ss, ptr %S, i32 0, i32 1
store i64 2, ptr %temp4, align 4
call void @f(ptr byval(%struct.ss) align 4 %S) nounwind
call void @g(ptr byval(%struct.ss) align 32 %S) nounwind
call void @h(ptr byval(%struct.ss) %S) nounwind
call void @k(ptr byval(%struct.ss) align 4 %S) nounwind
call void @l(ptr byval(%struct.ss) align 4 %S) nounwind
call void @m(ptr byval(%struct.ss) align 4 %S, ptr byval(%struct.ss) align 4 %S) nounwind
ret i32 0
}
|
