clang/test/CodeGenCXX/externc-ifunc-resolver.cpp

   1 // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
   2
   3 extern "C" {
   4 __attribute__((used)) static void *resolve_foo() { return 0; }
   5 __attribute__((ifunc("resolve_foo"))) char *foo();
   6 __attribute__((ifunc("resolve_foo"))) void foo2(int);
   7 __attribute__((ifunc("resolve_foo"))) char foo3(float);
   8 __attribute__((ifunc("resolve_foo"))) char foo4(float);
   9 }
  10
  11 // CHECK: @resolve_foo = internal alias ptr (), ptr @_ZL11resolve_foov
  12 // CHECK: @foo = ifunc ptr (), ptr @_ZL11resolve_foov
  13 // CHECK: @foo2 = ifunc void (i32), ptr @_ZL11resolve_foov
  14 // CHECK: @foo3 = ifunc i8 (float), ptr @_ZL11resolve_foov
  15 // CHECK: @foo4 = ifunc i8 (float), ptr @_ZL11resolve_foov
  16 // CHECK: define internal noundef ptr @_ZL11resolve_foov()