gcc/testsuite/gcc.target/aarch64/bfxil_1.c

   1 /* { dg-do run { target aarch64*-*-* } } */
   2 /* { dg-options "-O2 --save-temps -fno-inline" } */
   3 /* { dg-require-effective-target aarch64_little_endian } */
   4
   5 extern void abort (void);
   6
   7 typedef struct bitfield
   8 {
   9   unsigned short eight1: 8;
  10   unsigned short four: 4;
  11   unsigned short eight2: 8;
  12   unsigned short seven: 7;
  13   unsigned int sixteen: 16;
  14 } bitfield;
  15
  16 bitfield
  17 bfxil (bitfield a)
  18 {
  19   /* { dg-final { scan-assembler "bfxil\tx\[0-9\]+, x\[0-9\]+, 16, 8" } } */
  20   a.eight1 = a.eight2;
  21   return a;
  22 }
  23
  24 int
  25 main (void)
  26 {
  27   static bitfield a;
  28   bitfield b;
  29
  30   a.eight1 = 9;
  31   a.eight2 = 57;
  32   b = bfxil (a);
  33
  34   if (b.eight1 != a.eight2)
  35     abort ();
  36
  37   return 0;
  38 }
  39