1 ; RUN: llc -march=mipsel -mcpu=mips2 < %s | FileCheck %s
4 ; All test functions do the same thing - they return the first variable
7 ; All CHECK's do the same thing - they check whether variable arguments from
8 ; registers are placed on correct stack locations, and whether the first
9 ; variable argument is returned from the correct stack location.
12 declare void @llvm.va_start(i8*) nounwind
13 declare void @llvm.va_end(i8*) nounwind
16 define i32 @va1(i32 %a, ...) nounwind {
18 %a.addr = alloca i32, align 4
19 %ap = alloca i8*, align 4
20 %b = alloca i32, align 4
21 store i32 %a, i32* %a.addr, align 4
22 %ap1 = bitcast i8** %ap to i8*
23 call void @llvm.va_start(i8* %ap1)
24 %0 = va_arg i8** %ap, i32
25 store i32 %0, i32* %b, align 4
26 %ap2 = bitcast i8** %ap to i8*
27 call void @llvm.va_end(i8* %ap2)
28 %tmp = load i32* %b, align 4
32 ; CHECK: addiu $sp, $sp, -32
33 ; CHECK: sw $5, 36($sp)
34 ; CHECK: sw $6, 40($sp)
35 ; CHECK: sw $7, 44($sp)
36 ; CHECK: lw $2, 36($sp)
39 ; check whether the variable double argument will be accessed from the 8-byte
40 ; aligned location (i.e. whether the address is computed by adding 7 and
41 ; clearing lower 3 bits)
42 define double @va2(i32 %a, ...) nounwind {
44 %a.addr = alloca i32, align 4
45 %ap = alloca i8*, align 4
46 %b = alloca double, align 8
47 store i32 %a, i32* %a.addr, align 4
48 %ap1 = bitcast i8** %ap to i8*
49 call void @llvm.va_start(i8* %ap1)
50 %0 = va_arg i8** %ap, double
51 store double %0, double* %b, align 8
52 %ap2 = bitcast i8** %ap to i8*
53 call void @llvm.va_end(i8* %ap2)
54 %tmp = load double* %b, align 8
58 ; CHECK: addiu $sp, $sp, -40
59 ; CHECK: addiu $2, $sp, 44
60 ; CHECK: sw $5, 44($sp)
61 ; CHECK: sw $6, 48($sp)
62 ; CHECK: sw $7, 52($sp)
63 ; CHECK: addiu $3, $2, 7
64 ; CHECK: addiu $5, $zero, -8
65 ; CHECK: and $3, $3, $5
66 ; CHECK: ldc1 $f0, 0($3)
70 define i32 @va3(double %a, ...) nounwind {
72 %a.addr = alloca double, align 8
73 %ap = alloca i8*, align 4
74 %b = alloca i32, align 4
75 store double %a, double* %a.addr, align 8
76 %ap1 = bitcast i8** %ap to i8*
77 call void @llvm.va_start(i8* %ap1)
78 %0 = va_arg i8** %ap, i32
79 store i32 %0, i32* %b, align 4
80 %ap2 = bitcast i8** %ap to i8*
81 call void @llvm.va_end(i8* %ap2)
82 %tmp = load i32* %b, align 4
86 ; CHECK: addiu $sp, $sp, -40
87 ; CHECK: sw $6, 48($sp)
88 ; CHECK: sw $7, 52($sp)
89 ; CHECK: lw $2, 48($sp)
93 define double @va4(double %a, ...) nounwind {
95 %a.addr = alloca double, align 8
96 %ap = alloca i8*, align 4
97 %b = alloca double, align 8
98 store double %a, double* %a.addr, align 8
99 %ap1 = bitcast i8** %ap to i8*
100 call void @llvm.va_start(i8* %ap1)
101 %0 = va_arg i8** %ap, double
102 store double %0, double* %b, align 8
103 %ap2 = bitcast i8** %ap to i8*
104 call void @llvm.va_end(i8* %ap2)
105 %tmp = load double* %b, align 8
109 ; CHECK: addiu $sp, $sp, -48
110 ; CHECK: sw $6, 56($sp)
111 ; CHECK: sw $7, 60($sp)
112 ; CHECK: addiu $3, $sp, 56
113 ; CHECK: addiu $6, $3, 7
114 ; CHECK: addiu $7, $zero, -8
115 ; CHECK: and $2, $6, $7
116 ; CHECK: ldc1 $f0, 0($2)
120 define i32 @va5(i32 %a, i32 %b, i32 %c, ...) nounwind {
122 %a.addr = alloca i32, align 4
123 %b.addr = alloca i32, align 4
124 %c.addr = alloca i32, align 4
125 %ap = alloca i8*, align 4
126 %d = alloca i32, align 4
127 store i32 %a, i32* %a.addr, align 4
128 store i32 %b, i32* %b.addr, align 4
129 store i32 %c, i32* %c.addr, align 4
130 %ap1 = bitcast i8** %ap to i8*
131 call void @llvm.va_start(i8* %ap1)
132 %0 = va_arg i8** %ap, i32
133 store i32 %0, i32* %d, align 4
134 %ap2 = bitcast i8** %ap to i8*
135 call void @llvm.va_end(i8* %ap2)
136 %tmp = load i32* %d, align 4
140 ; CHECK: addiu $sp, $sp, -40
141 ; CHECK: sw $7, 52($sp)
142 ; CHECK: lw $2, 52($sp)
146 define double @va6(i32 %a, i32 %b, i32 %c, ...) nounwind {
148 %a.addr = alloca i32, align 4
149 %b.addr = alloca i32, align 4
150 %c.addr = alloca i32, align 4
151 %ap = alloca i8*, align 4
152 %d = alloca double, align 8
153 store i32 %a, i32* %a.addr, align 4
154 store i32 %b, i32* %b.addr, align 4
155 store i32 %c, i32* %c.addr, align 4
156 %ap1 = bitcast i8** %ap to i8*
157 call void @llvm.va_start(i8* %ap1)
158 %0 = va_arg i8** %ap, double
159 store double %0, double* %d, align 8
160 %ap2 = bitcast i8** %ap to i8*
161 call void @llvm.va_end(i8* %ap2)
162 %tmp = load double* %d, align 8
166 ; CHECK: addiu $sp, $sp, -48
167 ; CHECK: sw $7, 60($sp)
168 ; CHECK: addiu $2, $sp, 60
169 ; CHECK: addiu $3, $2, 7
170 ; CHECK: addiu $4, $zero, -8
171 ; CHECK: and $3, $3, $4
172 ; CHECK: ldc1 $f0, 0($3)
176 define i32 @va7(i32 %a, double %b, ...) nounwind {
178 %a.addr = alloca i32, align 4
179 %b.addr = alloca double, align 8
180 %ap = alloca i8*, align 4
181 %c = alloca i32, align 4
182 store i32 %a, i32* %a.addr, align 4
183 store double %b, double* %b.addr, align 8
184 %ap1 = bitcast i8** %ap to i8*
185 call void @llvm.va_start(i8* %ap1)
186 %0 = va_arg i8** %ap, i32
187 store i32 %0, i32* %c, align 4
188 %ap2 = bitcast i8** %ap to i8*
189 call void @llvm.va_end(i8* %ap2)
190 %tmp = load i32* %c, align 4
194 ; CHECK: addiu $sp, $sp, -40
195 ; CHECK: lw $2, 56($sp)
199 define double @va8(i32 %a, double %b, ...) nounwind {
201 %a.addr = alloca i32, align 4
202 %b.addr = alloca double, align 8
203 %ap = alloca i8*, align 4
204 %c = alloca double, align 8
205 store i32 %a, i32* %a.addr, align 4
206 store double %b, double* %b.addr, align 8
207 %ap1 = bitcast i8** %ap to i8*
208 call void @llvm.va_start(i8* %ap1)
209 %0 = va_arg i8** %ap, double
210 store double %0, double* %c, align 8
211 %ap2 = bitcast i8** %ap to i8*
212 call void @llvm.va_end(i8* %ap2)
213 %tmp = load double* %c, align 8
217 ; CHECK: addiu $sp, $sp, -48
218 ; CHECK: addiu $3, $sp, 64
219 ; CHECK: addiu $4, $3, 7
220 ; CHECK: addiu $5, $zero, -8
221 ; CHECK: and $2, $4, $5
222 ; CHECK: ldc1 $f0, 0($2)
226 define i32 @va9(double %a, double %b, i32 %c, ...) nounwind {
228 %a.addr = alloca double, align 8
229 %b.addr = alloca double, align 8
230 %c.addr = alloca i32, align 4
231 %ap = alloca i8*, align 4
232 %d = alloca i32, align 4
233 store double %a, double* %a.addr, align 8
234 store double %b, double* %b.addr, align 8
235 store i32 %c, i32* %c.addr, align 4
236 %ap1 = bitcast i8** %ap to i8*
237 call void @llvm.va_start(i8* %ap1)
238 %0 = va_arg i8** %ap, i32
239 store i32 %0, i32* %d, align 4
240 %ap2 = bitcast i8** %ap to i8*
241 call void @llvm.va_end(i8* %ap2)
242 %tmp = load i32* %d, align 4
246 ; CHECK: addiu $sp, $sp, -56
247 ; CHECK: lw $2, 76($sp)
251 define double @va10(double %a, double %b, i32 %c, ...) nounwind {
253 %a.addr = alloca double, align 8
254 %b.addr = alloca double, align 8
255 %c.addr = alloca i32, align 4
256 %ap = alloca i8*, align 4
257 %d = alloca double, align 8
258 store double %a, double* %a.addr, align 8
259 store double %b, double* %b.addr, align 8
260 store i32 %c, i32* %c.addr, align 4
261 %ap1 = bitcast i8** %ap to i8*
262 call void @llvm.va_start(i8* %ap1)
263 %0 = va_arg i8** %ap, double
264 store double %0, double* %d, align 8
265 %ap2 = bitcast i8** %ap to i8*
266 call void @llvm.va_end(i8* %ap2)
267 %tmp = load double* %d, align 8
271 ; CHECK: addiu $sp, $sp, -56
272 ; CHECK: addiu $3, $sp, 76
273 ; CHECK: addiu $2, $3, 7
274 ; CHECK: addiu $4, $zero, -8
275 ; CHECK: and $2, $2, $4
276 ; CHECK: ldc1 $f0, 0($2)