x86_32-arguments-darwin.c revision ca3d3fcabaa0d7255e9a778ef468daa6e052b211
1// RUN: %clang_cc1 -w -fblocks -triple i386-apple-darwin9 -target-cpu yonah -emit-llvm -o - %s | FileCheck %s
2
3// CHECK: define signext i8 @f0()
4char f0(void) {
5  return 0;
6}
7
8// CHECK: define signext i16 @f1()
9short f1(void) {
10  return 0;
11}
12
13// CHECK: define i32 @f2()
14int f2(void) {
15  return 0;
16}
17
18// CHECK: define float @f3()
19float f3(void) {
20  return 0;
21}
22
23// CHECK: define double @f4()
24double f4(void) {
25  return 0;
26}
27
28// CHECK: define x86_fp80 @f5()
29long double f5(void) {
30  return 0;
31}
32
33// CHECK: define void @f6(i8 signext %a0, i16 signext %a1, i32 %a2, i64 %a3, i8* %a4)
34void f6(char a0, short a1, int a2, long long a3, void *a4) {}
35
36// CHECK: define void @f7(i32 %a0)
37typedef enum { A, B, C } e7;
38void f7(e7 a0) {}
39
40// CHECK: define i64 @f8_1()
41// CHECK: define void @f8_2(i32 %a0.0, i32 %a0.1)
42struct s8 {
43  int a;
44  int b;
45};
46struct s8 f8_1(void) { while (1) {} }
47void f8_2(struct s8 a0) {}
48
49// This should be passed just as s8.
50
51// CHECK: define i64 @f9_1()
52
53// FIXME: llvm-gcc expands this, this may have some value for the
54// backend in terms of optimization but doesn't change the ABI.
55// CHECK: define void @f9_2(%struct.s9* byval align 4 %a0)
56struct s9 {
57  int a : 17;
58  int b;
59};
60struct s9 f9_1(void) { while (1) {} }
61void f9_2(struct s9 a0) {}
62
63// Return of small structures and unions
64
65// CHECK: float @f10()
66struct s10 {
67  union { };
68  float f;
69} f10(void) { while (1) {} }
70
71// Small vectors and 1 x {i64,double} are returned in registers
72
73// CHECK: i32 @f11()
74// CHECK: void @f12(<2 x i32>* noalias sret %agg.result)
75// CHECK: i64 @f13()
76// CHECK: i64 @f14()
77// CHECK: <2 x i64> @f15()
78// CHECK: <2 x i64> @f16()
79typedef short T11 __attribute__ ((vector_size (4)));
80T11 f11(void) { while (1) {} }
81typedef int T12 __attribute__ ((vector_size (8)));
82T12 f12(void) { while (1) {} }
83typedef long long T13 __attribute__ ((vector_size (8)));
84T13 f13(void) { while (1) {} }
85typedef double T14 __attribute__ ((vector_size (8)));
86T14 f14(void) { while (1) {} }
87typedef long long T15 __attribute__ ((vector_size (16)));
88T15 f15(void) { while (1) {} }
89typedef double T16 __attribute__ ((vector_size (16)));
90T16 f16(void) { while (1) {} }
91
92// And when the single element in a struct (but not for 64 and
93// 128-bits).
94
95// CHECK: i32 @f17()
96// CHECK: void @f18(%{{.*}}* noalias sret %agg.result)
97// CHECK: void @f19(%{{.*}}* noalias sret %agg.result)
98// CHECK: void @f20(%{{.*}}* noalias sret %agg.result)
99// CHECK: void @f21(%{{.*}}* noalias sret %agg.result)
100// CHECK: void @f22(%{{.*}}* noalias sret %agg.result)
101struct { T11 a; } f17(void) { while (1) {} }
102struct { T12 a; } f18(void) { while (1) {} }
103struct { T13 a; } f19(void) { while (1) {} }
104struct { T14 a; } f20(void) { while (1) {} }
105struct { T15 a; } f21(void) { while (1) {} }
106struct { T16 a; } f22(void) { while (1) {} }
107
108// Single element structures are handled specially
109
110// CHECK: float @f23()
111// CHECK: float @f24()
112// CHECK: float @f25()
113struct { float a; } f23(void) { while (1) {} }
114struct { float a[1]; } f24(void) { while (1) {} }
115struct { struct {} a; struct { float a[1]; } b; } f25(void) { while (1) {} }
116
117// Small structures are handled recursively
118// CHECK: i32 @f26()
119// CHECK: void @f27(%struct.s27* noalias sret %agg.result)
120struct s26 { struct { char a, b; } a; struct { char a, b; } b; } f26(void) { while (1) {} }
121struct s27 { struct { char a, b, c; } a; struct { char a; } b; } f27(void) { while (1) {} }
122
123// CHECK: void @f28(%struct.s28* noalias sret %agg.result)
124struct s28 { int a; int b[]; } f28(void) { while (1) {} }
125
126// CHECK: define i16 @f29()
127struct s29 { struct { } a[1]; char b; char c; } f29(void) { while (1) {} }
128
129// CHECK: define i16 @f30()
130struct s30 { char a; char b : 4; } f30(void) { while (1) {} }
131
132// CHECK: define float @f31()
133struct s31 { char : 0; float b; char : 0; } f31(void) { while (1) {} }
134
135// CHECK: define i32 @f32()
136struct s32 { char a; unsigned : 0; } f32(void) { while (1) {} }
137
138// CHECK: define float @f33()
139struct s33 { float a; long long : 0; } f33(void) { while (1) {} }
140
141// CHECK: define float @f34()
142struct s34 { struct { int : 0; } a; float b; } f34(void) { while (1) {} }
143
144// CHECK: define i16 @f35()
145struct s35 { struct { int : 0; } a; char b; char c; } f35(void) { while (1) {} }
146
147// CHECK: define i16 @f36()
148struct s36 { struct { int : 0; } a[2][10]; char b; char c; } f36(void) { while (1) {} }
149
150// CHECK: define float @f37()
151struct s37 { float c[1][1]; } f37(void) { while (1) {} }
152
153// CHECK: define void @f38(%struct.s38* noalias sret %agg.result)
154struct s38 { char a[3]; short b; } f38(void) { while (1) {} }
155
156// CHECK: define void @f39(%struct.s39* byval align 16 %x)
157typedef int v39 __attribute((vector_size(16)));
158struct s39 { v39 x; };
159void f39(struct s39 x) {}
160
161// <rdar://problem/7247671>
162// CHECK: define i32 @f40()
163enum e40 { ec0 = 0 };
164enum e40 f40(void) { }
165
166// CHECK: define void ()* @f41()
167typedef void (^vvbp)(void);
168vvbp f41(void) { }
169
170// CHECK: define i32 @f42()
171struct s42 { enum e40 f0; } f42(void) {  }
172
173// CHECK: define i64 @f43()
174struct s43 { enum e40 f0; int f1; } f43(void) {  }
175
176// CHECK: define i32 @f44()
177struct s44 { vvbp f0; } f44(void) {  }
178
179// CHECK: define i64 @f45()
180struct s45 { vvbp f0; int f1; } f45(void) {  }
181
182// CHECK: define void @f46(i32 %a0)
183void f46(enum e40 a0) { }
184
185// CHECK: define void @f47(void ()* %a1)
186void f47(vvbp a1) { }
187
188// CHECK: define void @f48(i32 %a0.0)
189struct s48 { enum e40 f0; };
190void f48(struct s48 a0) { }
191
192// CHECK: define void @f49(i32 %a0.0, i32 %a0.1)
193struct s49 { enum e40 f0; int f1; };
194void f49(struct s49 a0) { }
195
196// CHECK: define void @f50(void ()* %a0.0)
197struct s50 { vvbp f0; };
198void f50(struct s50 a0) { }
199
200// CHECK: define void @f51(void ()* %a0.0, i32 %a0.1)
201struct s51 { vvbp f0; int f1; };
202void f51(struct s51 a0) { }
203
204// CHECK: define void @f52(%struct.s52* byval align 4)
205struct s52 {
206  long double a;
207};
208void f52(struct s52 x) {}
209
210// CHECK: define void @f53(%struct.s53* byval align 4)
211struct __attribute__((aligned(32))) s53 {
212  int x;
213  int y;
214};
215void f53(struct s53 x) {}
216
217typedef unsigned short v2i16 __attribute__((__vector_size__(4)));
218
219// CHECK: define i32 @f54(i32 %arg.coerce)
220// rdar://8359483
221v2i16 f54(v2i16 arg) { return arg+arg; }
222
223
224typedef int v4i32 __attribute__((__vector_size__(16)));
225
226// CHECK: define <2 x i64> @f55(<4 x i32> %arg)
227// PR8029
228v4i32 f55(v4i32 arg) { return arg+arg; }
229
230// CHECK: define void @f56(
231// CHECK: i8 signext %a0, %struct.s56_0* byval align 4 %a1,
232// CHECK: x86_mmx %a2.coerce, %struct.s56_1* byval align 4,
233// CHECK: i64 %a4.coerce, %struct.s56_2* byval align 4,
234// CHECK: <4 x i32> %a6, %struct.s56_3* byval align 16 %a7,
235// CHECK: <2 x double> %a8, %struct.s56_4* byval align 16 %a9,
236// CHECK: <8 x i32> %a10, %struct.s56_5* byval align 4,
237// CHECK: <4 x double> %a12, %struct.s56_6* byval align 4)
238
239// CHECK:   call void (i32, ...)* @f56_0(i32 1,
240// CHECK: i32 %{{[^ ]*}}, %struct.s56_0* byval align 4 %{{[^ ]*}},
241// CHECK: x86_mmx %{{[^ ]*}}, %struct.s56_1* byval align 4 %{{[^ ]*}},
242// CHECK: i64 %{{[^ ]*}}, %struct.s56_2* byval align 4 %{{[^ ]*}},
243// CHECK: <4 x i32> %{{[^ ]*}}, %struct.s56_3* byval align 16 %{{[^ ]*}},
244// CHECK: <2 x double> %{{[^ ]*}}, %struct.s56_4* byval align 16 %{{[^ ]*}},
245// CHECK: <8 x i32> {{[^ ]*}}, %struct.s56_5* byval align 4 %{{[^ ]*}},
246// CHECK: <4 x double> {{[^ ]*}}, %struct.s56_6* byval align 4 %{{[^ ]*}})
247// CHECK: }
248//
249// <rdar://problem/7964854> [i386] clang misaligns long double in structures
250// when passed byval
251// <rdar://problem/8431367> clang misaligns parameters on stack
252typedef int __attribute__((vector_size (8))) t56_v2i;
253typedef double __attribute__((vector_size (8))) t56_v1d;
254typedef int __attribute__((vector_size (16))) t56_v4i;
255typedef double __attribute__((vector_size (16))) t56_v2d;
256typedef int __attribute__((vector_size (32))) t56_v8i;
257typedef double __attribute__((vector_size (32))) t56_v4d;
258
259struct s56_0 { char a; };
260struct s56_1 { t56_v2i a; };
261struct s56_2 { t56_v1d a; };
262struct s56_3 { t56_v4i a; };
263struct s56_4 { t56_v2d a; };
264struct s56_5 { t56_v8i a; };
265struct s56_6 { t56_v4d a; };
266
267void f56(char a0, struct s56_0 a1,
268         t56_v2i a2, struct s56_1 a3,
269         t56_v1d a4, struct s56_2 a5,
270         t56_v4i a6, struct s56_3 a7,
271         t56_v2d a8, struct s56_4 a9,
272         t56_v8i a10, struct s56_5 a11,
273         t56_v4d a12, struct s56_6 a13) {
274  extern void f56_0(int x, ...);
275  f56_0(1, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9,
276        a10, a11, a12, a13);
277}
278
279// CHECK: define void @f57(i32 %x.0, i32 %x.1)
280// CHECK: call void @f57(
281struct s57 { _Complex int x; };
282void f57(struct s57 x) {} void f57a(void) { f57((struct s57){1}); }
283