1 // REQUIRES: hexagon-registered-target
2 // RUN: %clang_cc1 -emit-llvm -triple hexagon-unknown-linux-musl %s -o - | FileCheck %s
3 #include <stdarg.h>
4
5 struct AAA {
6 int x;
7 int y;
8 int z;
9 int d;
10 };
11
12 // CHECK: call void @llvm.va_start.p0(ptr %arraydecay)
13 // CHECK: %arraydecay1 = getelementptr inbounds [1 x %struct.__va_list_tag],
14 // ptr %ap, i32 0, i32 0
15 // CHECK: br label %vaarg.maybe_reg
16
17 // CHECK: vaarg.maybe_reg: ; preds = %entry
18 // CHECK: %__current_saved_reg_area_pointer_p = getelementptr inbounds
19 // %struct.__va_list_tag, ptr %arraydecay2, i32 0, i32 0
20 // CHECK: %__current_saved_reg_area_pointer = load ptr, ptr
21 // %__current_saved_reg_area_pointer_p
22 // CHECK: %__saved_reg_area_end_pointer_p = getelementptr inbounds
23 // %struct.__va_list_tag, ptr %arraydecay2, i32 0, i32 1
24 // CHECK: %__saved_reg_area_end_pointer = load ptr, ptr
25 // %__saved_reg_area_end_pointer_p
26 // CHECK: %__new_saved_reg_area_pointer = getelementptr i8, ptr
27 // %__current_saved_reg_area_pointer, i32 4
28 // CHECK: %0 = icmp sgt ptr %__new_saved_reg_area_pointer,
29 // %__saved_reg_area_end_pointer
30 // CHECK: br i1 %0, label %vaarg.on_stack, label %vaarg.in_reg
31
32 // CHECK: vaarg.in_reg: ; preds =
33 // %vaarg.maybe_reg
34 // CHECK: store ptr %__new_saved_reg_area_pointer, ptr
35 // %__current_saved_reg_area_pointer_p
36 // CHECK: br label %vaarg.end
37
38 // CHECK: vaarg.on_stack: ; preds =
39 // %vaarg.maybe_reg
40 // CHECK: %__overflow_area_pointer_p = getelementptr inbounds
41 // %struct.__va_list_tag, ptr %arraydecay2, i32 0, i32 2
42 // CHECK: %__overflow_area_pointer = load ptr, ptr %__overflow_area_pointer_p
43 // CHECK: %__overflow_area_pointer.next = getelementptr i8, ptr
44 // %__overflow_area_pointer, i32 4
45 // CHECK: store ptr %__overflow_area_pointer.next, ptr
46 // %__overflow_area_pointer_p
47 // CHECK: store ptr %__overflow_area_pointer.next, ptr
48 // %__current_saved_reg_area_pointer_p
49 // CHECK: br label %vaarg.end
50
51 // CHECK: vaarg.end: ; preds =
52 // %vaarg.on_stack, %vaarg.in_reg
53 // CHECK: %vaarg.addr = phi ptr [ %__current_saved_reg_area_pointer, %vaarg.in_reg ], [ %__overflow_area_pointer, %vaarg.on_stack
54 // ]
55 // CHECK: %1 = load i32, ptr %vaarg.addr
56
57 struct AAA aaa = {100, 200, 300, 400};
58
foo(int xx,...)59 int foo(int xx, ...) {
60 va_list ap;
61 int d;
62 int ret = 0;
63 struct AAA bbb;
64 va_start(ap, xx);
65 d = va_arg(ap, int);
66 ret += d;
67 bbb = va_arg(ap, struct AAA);
68 ret += bbb.d;
69 d = va_arg(ap, int);
70 ret += d;
71 va_end(ap);
72 return ret;
73 }
74
main(void)75 int main(void) {
76 int x;
77 x = foo(1, 2, aaa, 4);
78 return x;
79 }
80