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