xref: /aosp_15_r20/external/clang/test/CodeGen/ifunc.c (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 -triple i386-unknown-linux-gnu -emit-llvm -o - %s | FileCheck %s
2*67e74705SXin Li // RUN: %clang_cc1 -triple i386-unknown-linux-gnu -O2 -emit-llvm -o - %s | FileCheck %s
3*67e74705SXin Li 
4*67e74705SXin Li int foo(int) __attribute__ ((ifunc("foo_ifunc")));
5*67e74705SXin Li 
f1(int i)6*67e74705SXin Li static int f1(int i) {
7*67e74705SXin Li   return i + 1;
8*67e74705SXin Li }
9*67e74705SXin Li 
f2(int i)10*67e74705SXin Li static int f2(int i) {
11*67e74705SXin Li   return i + 2;
12*67e74705SXin Li }
13*67e74705SXin Li 
14*67e74705SXin Li typedef int (*foo_t)(int);
15*67e74705SXin Li 
16*67e74705SXin Li int global;
17*67e74705SXin Li 
foo_ifunc()18*67e74705SXin Li static foo_t foo_ifunc() {
19*67e74705SXin Li   return global ? f1 : f2;
20*67e74705SXin Li }
21*67e74705SXin Li 
bar()22*67e74705SXin Li int bar() {
23*67e74705SXin Li   return foo(1);
24*67e74705SXin Li }
25*67e74705SXin Li 
26*67e74705SXin Li extern void goo(void);
27*67e74705SXin Li 
bar2(void)28*67e74705SXin Li void bar2(void) {
29*67e74705SXin Li   goo();
30*67e74705SXin Li }
31*67e74705SXin Li 
32*67e74705SXin Li extern void goo(void) __attribute__ ((ifunc("goo_ifunc")));
33*67e74705SXin Li 
goo_ifunc(void)34*67e74705SXin Li void* goo_ifunc(void) {
35*67e74705SXin Li   return 0;
36*67e74705SXin Li }
37*67e74705SXin Li // CHECK: @foo = ifunc i32 (i32), bitcast (i32 (i32)* ()* @foo_ifunc to i32 (i32)*)
38*67e74705SXin Li // CHECK: @goo = ifunc void (), bitcast (i8* ()* @goo_ifunc to void ()*)
39*67e74705SXin Li 
40*67e74705SXin Li // CHECK: call i32 @foo(i32
41*67e74705SXin Li // CHECK: call void @goo()
42