gcc/testsuite/gcc.target/arm/pragma_arch_switch_2.c

   1 /* Test for switching architectures during compilation.  */
   2 /* { dg-skip-if "instruction not valid on thumb" { *-*-* } { "-mthumb" } { "" } } */
   3 /* { dg-do assemble } */
   4 /* { dg-require-effective-target arm_arm_ok } */
   5 /* { dg-require-effective-target arm_arch_v5te_arm_ok } */
   6 /* { dg-additional-options "-Wall -O2 -std=gnu99" } */
   7 /* { dg-add-options arm_arch_v5te_arm } */
   8
   9 #pragma GCC target ("arch=armv6+fp")
  10 int test_assembly (int hi, int lo)
  11 {
  12    int res;
  13    __asm__ __volatile__ (
  14       "uxtah   %0, %1, %2\n"
  15       : "=r" (res)
  16       : "r" (hi),  "r" (lo));
  17    return res;
  18 }
  19