xref: /aosp_15_r20/external/clang/test/CodeGen/attributes.c (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 -emit-llvm -triple i386-linux-gnu -o %t %s
2*67e74705SXin Li // RUN: FileCheck --input-file=%t %s
3*67e74705SXin Li 
4*67e74705SXin Li // CHECK: @t5 = weak global i32 2
5*67e74705SXin Li int t5 __attribute__((weak)) = 2;
6*67e74705SXin Li 
7*67e74705SXin Li // CHECK: @t13 = global %struct.s0 zeroinitializer, section "SECT"
8*67e74705SXin Li struct s0 { int x; };
9*67e74705SXin Li struct s0 t13 __attribute__((section("SECT"))) = { 0 };
10*67e74705SXin Li 
11*67e74705SXin Li // CHECK: @t14.x = internal global i32 0, section "SECT"
t14(void)12*67e74705SXin Li void t14(void) {
13*67e74705SXin Li   static int x __attribute__((section("SECT"))) = 0;
14*67e74705SXin Li }
15*67e74705SXin Li 
16*67e74705SXin Li // CHECK: @t18 = global i32 1, align 4
17*67e74705SXin Li extern int t18 __attribute__((weak_import));
18*67e74705SXin Li int t18 = 1;
19*67e74705SXin Li 
20*67e74705SXin Li // CHECK: @t16 = extern_weak global i32
21*67e74705SXin Li extern int t16 __attribute__((weak_import));
22*67e74705SXin Li 
23*67e74705SXin Li // CHECK: @t6 = common protected global i32 0
24*67e74705SXin Li int t6 __attribute__((visibility("protected")));
25*67e74705SXin Li 
26*67e74705SXin Li // CHECK: @t12 = global i32 0, section "SECT"
27*67e74705SXin Li int t12 __attribute__((section("SECT")));
28*67e74705SXin Li 
29*67e74705SXin Li // CHECK: @t9 = weak alias void (...), bitcast (void ()* @__t8 to void (...)*)
__t8()30*67e74705SXin Li void __t8() {}
31*67e74705SXin Li void t9() __attribute__((weak, alias("__t8")));
32*67e74705SXin Li 
33*67e74705SXin Li // CHECK: declare extern_weak i32 @t15()
34*67e74705SXin Li int __attribute__((weak_import)) t15(void);
t17()35*67e74705SXin Li int t17() {
36*67e74705SXin Li   return t15() + t16;
37*67e74705SXin Li }
38*67e74705SXin Li 
39*67e74705SXin Li // CHECK: define void @t1() [[NR:#[0-9]+]] {
40*67e74705SXin Li void t1() __attribute__((noreturn));
t1()41*67e74705SXin Li void t1() { while (1) {} }
42*67e74705SXin Li 
43*67e74705SXin Li // CHECK: define void @t2() [[NUW:#[0-9]+]] {
44*67e74705SXin Li void t2() __attribute__((nothrow));
t2()45*67e74705SXin Li void t2() {}
46*67e74705SXin Li 
47*67e74705SXin Li // CHECK: define weak void @t3() [[NUW]] {
48*67e74705SXin Li void t3() __attribute__((weak));
t3()49*67e74705SXin Li void t3() {}
50*67e74705SXin Li 
51*67e74705SXin Li // CHECK: define hidden void @t4() [[NUW]] {
52*67e74705SXin Li void t4() __attribute__((visibility("hidden")));
t4()53*67e74705SXin Li void t4() {}
54*67e74705SXin Li 
55*67e74705SXin Li // CHECK: define void @t7() [[NR]] {
56*67e74705SXin Li void t7() __attribute__((noreturn, nothrow));
t7()57*67e74705SXin Li void t7() { while (1) {} }
58*67e74705SXin Li 
59*67e74705SXin Li // CHECK: define void @t10() [[NUW]] section "SECT" {
60*67e74705SXin Li void t10(void) __attribute__((section("SECT")));
t10(void)61*67e74705SXin Li void t10(void) {}
62*67e74705SXin Li // CHECK: define void @t11() [[NUW]] section "SECT" {
t11(void)63*67e74705SXin Li void __attribute__((section("SECT"))) t11(void) {}
64*67e74705SXin Li 
65*67e74705SXin Li // CHECK: define i32 @t19() [[NUW]] {
66*67e74705SXin Li extern int t19(void) __attribute__((weak_import));
t19(void)67*67e74705SXin Li int t19(void) {
68*67e74705SXin Li   return 10;
69*67e74705SXin Li }
70*67e74705SXin Li 
71*67e74705SXin Li // CHECK:define void @t20() [[NUW]] {
72*67e74705SXin Li // CHECK: call void @abort()
73*67e74705SXin Li // CHECK-NEXT: unreachable
t20(void)74*67e74705SXin Li void t20(void) {
75*67e74705SXin Li   __builtin_abort();
76*67e74705SXin Li }
77*67e74705SXin Li 
78*67e74705SXin Li void (__attribute__((fastcall)) *fptr)(int);
t21(void)79*67e74705SXin Li void t21(void) {
80*67e74705SXin Li   fptr(10);
81*67e74705SXin Li }
82*67e74705SXin Li // CHECK: [[FPTRVAR:%[a-z0-9]+]] = load void (i32)*, void (i32)** @fptr
83*67e74705SXin Li // CHECK-NEXT: call x86_fastcallcc void [[FPTRVAR]](i32 inreg 10)
84*67e74705SXin Li 
85*67e74705SXin Li 
86*67e74705SXin Li // PR9356: We might want to err on this, but for now at least make sure we
87*67e74705SXin Li // use the section in the definition.
88*67e74705SXin Li void __attribute__((section(".foo"))) t22(void);
t22(void)89*67e74705SXin Li void __attribute__((section(".bar"))) t22(void) {}
90*67e74705SXin Li 
91*67e74705SXin Li // CHECK: define void @t22() [[NUW]] section ".bar"
92*67e74705SXin Li 
93*67e74705SXin Li // CHECK: attributes [[NUW]] = { nounwind{{.*}} }
94*67e74705SXin Li // CHECK: attributes [[NR]] = { noreturn nounwind{{.*}} }
95