llvm-project/clang/test/CodeGen/2008-07-29-override-alias-decl.c

// RUN: clang-cc -emit-llvm -o - %s | FileCheck %s

int x() { return 1; }

// CHECK:  %retval = alloca i32
// CHECK:  store i32 1, i32* %retval
// CHECK:  %0 = load i32* %retval
// CHECK:  ret i32 %0


int f() __attribute__((weak, alias("x")));

/* Test that we link to the alias correctly instead of making a new
   forward definition. */
int f();
int h() {
  return f();
}

// CHECK:  %retval = alloca i32
// CHECK:  %call = call i32 (...)* @f()
// CHECK:  store i32 %call, i32* %retval
// CHECK:  %0 = load i32* %retval
// CHECK:  ret i32 %0