aboutsummaryrefslogtreecommitdiff
path: root/llvm/test/CodeGen/X86/preallocated.ll
blob: 75d4dff946cbec992f0706e0d2169f8b446f8c04 (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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s

declare token @llvm.call.preallocated.setup(i32)
declare ptr @llvm.call.preallocated.arg(token, i32)

%Foo = type { i32, i32 }

declare void @init(ptr)



declare void @foo_p(ptr preallocated(%Foo))

define void @one_preallocated() {
; CHECK-LABEL: _one_preallocated:
  %t = call token @llvm.call.preallocated.setup(i32 1)
  %a = call ptr @llvm.call.preallocated.arg(token %t, i32 0) preallocated(%Foo)
; CHECK: subl $8, %esp
; CHECK: calll _foo_p
  call void @foo_p(ptr preallocated(%Foo) %a) ["preallocated"(token %t)]
  ret void
}

define void @one_preallocated_two_blocks() {
; CHECK-LABEL: _one_preallocated_two_blocks:
  %t = call token @llvm.call.preallocated.setup(i32 1)
  br label %second
second:
  %a = call ptr @llvm.call.preallocated.arg(token %t, i32 0) preallocated(%Foo)
; CHECK: subl $8, %esp
; CHECK: calll _foo_p
  call void @foo_p(ptr preallocated(%Foo) %a) ["preallocated"(token %t)]
  ret void
}

define void @preallocated_with_store() {
; CHECK-LABEL: _preallocated_with_store:
; CHECK: subl $8, %esp
  %t = call token @llvm.call.preallocated.setup(i32 1)
; CHECK: leal (%esp), [[REGISTER:%[a-z]+]]
  %a = call ptr @llvm.call.preallocated.arg(token %t, i32 0) preallocated(%Foo)
  %p1 = getelementptr %Foo, ptr %a, i32 0, i32 1
  store i32 13, ptr %a
  store i32 42, ptr %p1
; CHECK-DAG: movl $13, ([[REGISTER]])
; CHECK-DAG: movl $42, 4([[REGISTER]])
; CHECK-NOT: subl {{\$[0-9]+}}, %esp
; CHECK-NOT: pushl
; CHECK: calll _foo_p
  call void @foo_p(ptr preallocated(%Foo) %a) ["preallocated"(token %t)]
  ret void
}

define void @preallocated_with_init() {
; CHECK-LABEL: _preallocated_with_init:
; CHECK: subl $8, %esp
  %t = call token @llvm.call.preallocated.setup(i32 1)
; CHECK: leal (%esp), [[REGISTER:%[a-z]+]]
  %a = call ptr @llvm.call.preallocated.arg(token %t, i32 0) preallocated(%Foo)
; CHECK: pushl [[REGISTER]]
; CHECK: calll _init
  call void @init(ptr %a)
; CHECK-NOT: subl {{\$[0-9]+}}, %esp
; CHECK-NOT: pushl
; CHECK: calll _foo_p
  call void @foo_p(ptr preallocated(%Foo) %a) ["preallocated"(token %t)]
  ret void
}

declare void @foo_p_p(ptr preallocated(%Foo), ptr preallocated(%Foo))

define void @two_preallocated() {
; CHECK-LABEL: _two_preallocated:
  %t = call token @llvm.call.preallocated.setup(i32 2)
  %a1 = call ptr @llvm.call.preallocated.arg(token %t, i32 0) preallocated(%Foo)
  %a2 = call ptr @llvm.call.preallocated.arg(token %t, i32 1) preallocated(%Foo)
; CHECK: subl $16, %esp
; CHECK: calll _foo_p_p
  call void @foo_p_p(ptr preallocated(%Foo) %a1, ptr preallocated(%Foo) %a2) ["preallocated"(token %t)]
  ret void
}

declare void @foo_p_int(ptr preallocated(%Foo), i32)

define void @one_preallocated_one_normal() {
; CHECK-LABEL: _one_preallocated_one_normal:
; CHECK: subl $12, %esp
  %t = call token @llvm.call.preallocated.setup(i32 1)
; CHECK: leal (%esp), [[REGISTER:%[a-z]+]]
  %a = call ptr @llvm.call.preallocated.arg(token %t, i32 0) preallocated(%Foo)
; CHECK: pushl [[REGISTER]]
; CHECK: calll _init
  call void @init(ptr %a)
; CHECK-NOT: subl {{\$[0-9]+}}, %esp
; CHECK-NOT: pushl
; CHECK: movl $2, 8(%esp)
; CHECK: calll _foo_p_int
  call void @foo_p_int(ptr preallocated(%Foo) %a, i32 2) ["preallocated"(token %t)]
  ret void
}

declare void @foo_ret_p(ptr sret(%Foo), ptr preallocated(%Foo))

define void @nested_with_init() {
; CHECK-LABEL: _nested_with_init:
  %tmp = alloca %Foo

  %t1 = call token @llvm.call.preallocated.setup(i32 1)
; CHECK: subl $12, %esp
  %a1 = call ptr @llvm.call.preallocated.arg(token %t1, i32 0) preallocated(%Foo)
; CHECK: leal 4(%esp), [[REGISTER1:%[a-z]+]]

  %t2 = call token @llvm.call.preallocated.setup(i32 1)
; CHECK: subl $12, %esp
  %a2 = call ptr @llvm.call.preallocated.arg(token %t2, i32 0) preallocated(%Foo)
; CHECK: leal 4(%esp), [[REGISTER2:%[a-z]+]]

  call void @init(ptr %a2)
; CHECK: pushl [[REGISTER2]]
; CHECK: calll _init

  call void @foo_ret_p(ptr sret(%Foo) %a1, ptr preallocated(%Foo) %a2) ["preallocated"(token %t2)]
; CHECK-NOT: subl {{\$[0-9]+}}, %esp
; CHECK-NOT: pushl
; CHECK: calll _foo_ret_p
  call void @foo_ret_p(ptr sret(%Foo) %tmp, ptr preallocated(%Foo) %a1) ["preallocated"(token %t1)]
; CHECK-NOT: subl {{\$[0-9]+}}, %esp
; CHECK-NOT: pushl
; CHECK: calll _foo_ret_p
  ret void
}

declare void @foo_inreg_p(i32 inreg, ptr preallocated(%Foo))

define void @inreg() {
; CHECK-LABEL: _inreg:
  %t = call token @llvm.call.preallocated.setup(i32 1)
  %a = call ptr @llvm.call.preallocated.arg(token %t, i32 0) preallocated(%Foo)
; CHECK: subl $8, %esp
; CHECK: movl $9, %eax
; CHECK: calll _foo_inreg_p
  call void @foo_inreg_p(i32 inreg 9, ptr preallocated(%Foo) %a) ["preallocated"(token %t)]
  ret void
}

declare x86_thiscallcc void @foo_thiscall_p(ptr, ptr preallocated(%Foo))

define void @thiscall() {
; CHECK-LABEL: _thiscall:
  %t = call token @llvm.call.preallocated.setup(i32 1)
  %a = call ptr @llvm.call.preallocated.arg(token %t, i32 0) preallocated(%Foo)
; CHECK: subl $8, %esp
; CHECK: xorl %ecx, %ecx
; CHECK: calll _foo_thiscall_p
  call x86_thiscallcc void @foo_thiscall_p(ptr null, ptr preallocated(%Foo) %a) ["preallocated"(token %t)]
  ret void
}

declare x86_stdcallcc void @foo_stdcall_p(ptr preallocated(%Foo))
declare x86_stdcallcc void @i(i32)

define void @stdcall() {
; CHECK-LABEL: _stdcall:
  %t = call token @llvm.call.preallocated.setup(i32 1)
  %a = call ptr @llvm.call.preallocated.arg(token %t, i32 0) preallocated(%Foo)
; CHECK: subl $8, %esp
; CHECK: calll _foo_stdcall_p@8
  call x86_stdcallcc void @foo_stdcall_p(ptr preallocated(%Foo) %a) ["preallocated"(token %t)]
; CHECK-NOT: %esp
; CHECK: pushl
; CHECK: calll _i@4
  call x86_stdcallcc void @i(i32 0)
  ret void
}