mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-20 03:55:48 -04:00
85eda12d09
This patch add support for GCC attribute((ifunc("resolver"))) for
targets that use ELF as object file format. In general ifunc is a
special kind of function alias with type @gnu_indirect_function. LLVM
patch http://reviews.llvm.org/D15525
Differential Revision: http://reviews.llvm.org/D15524
llvm-svn: 265917
42 lines
805 B
C
42 lines
805 B
C
// RUN: %clang_cc1 -triple i386-unknown-linux-gnu -emit-llvm -o - %s | FileCheck %s
|
|
// RUN: %clang_cc1 -triple i386-unknown-linux-gnu -O2 -emit-llvm -o - %s | FileCheck %s
|
|
|
|
int foo(int) __attribute__ ((ifunc("foo_ifunc")));
|
|
|
|
static int f1(int i) {
|
|
return i + 1;
|
|
}
|
|
|
|
static int f2(int i) {
|
|
return i + 2;
|
|
}
|
|
|
|
typedef int (*foo_t)(int);
|
|
|
|
int global;
|
|
|
|
static foo_t foo_ifunc() {
|
|
return global ? f1 : f2;
|
|
}
|
|
|
|
int bar() {
|
|
return foo(1);
|
|
}
|
|
|
|
extern void goo(void);
|
|
|
|
void bar2(void) {
|
|
goo();
|
|
}
|
|
|
|
extern void goo(void) __attribute__ ((ifunc("goo_ifunc")));
|
|
|
|
void* goo_ifunc(void) {
|
|
return 0;
|
|
}
|
|
// CHECK: @foo = ifunc i32 (i32), bitcast (i32 (i32)* ()* @foo_ifunc to i32 (i32)*)
|
|
// CHECK: @goo = ifunc void (), bitcast (i8* ()* @goo_ifunc to void ()*)
|
|
|
|
// CHECK: call i32 @foo(i32
|
|
// CHECK: call void @goo()
|