gcc/testsuite/gcc.target/i386/asm-4.c

   1 /* Test if functions marked __attribute__((used)), but with address never
   2    taken in C code, don't use alternate calling convention for local
   3    functions on IA-32.  */
   4 /* { dg-do run } */
   5 /* The asm in this test uses an absolute address.  */
   6 /* { dg-require-effective-target nonpic } */
   7 /* { dg-options "-O2" } */
   8
   9 extern void abort (void);
  10
  11 static int foo (int, int, int, int) __asm ("foo");
  12 static __attribute__((noinline, used)) int
  13 foo (int i, int j, int k, int l)
  14 {
  15   return i + j + k + l;
  16 }
  17
  18 void
  19 bar (void)
  20 {
  21   if (foo (1, 2, 3, 4) != 10)
  22     abort ();
  23 }
  24
  25 int (*fn) (int, int, int, int);
  26
  27 void
  28 baz (void)
  29 {
  30   /* Darwin loads 64-bit regions above the 4GB boundary so
  31      we need to use this instead.  */
  32 #if defined (__LP64__) && defined (__MACH__)
  33   __asm ("leaq foo(%%rip), %0" : "=r" (fn));
  34 #else
  35   __asm ("movl $foo, %k0" : "=r" (fn));
  36 #endif
  37   if (fn (2, 3, 4, 5) != 14)
  38     abort ();
  39 }
  40
  41 int
  42 main (void)
  43 {
  44   bar ();
  45   baz ();
  46   return 0;
  47 }