gcc/testsuite/gcc.target/powerpc/pr54009.c

   1 /* { dg-do compile { target { powerpc*-*-* } } } */
   2 /* { dg-require-effective-target powerpc_fprs } */
   3 /* { dg-options "-O2" } */
   4 /* { dg-final { scan-assembler-not "\[\+\]32768" } } */
   5
   6 /* -O2 -m32 store to x.d in w was
   7     lis 9,x+32764@ha
   8     stw 10,x+32764@l(9)
   9     stw 11,x+32768@l(9)  <--  wrap!  */
  10
  11 struct big {
  12   char a[32764];
  13   double d __attribute__ ((aligned (4)));
  14 } __attribute__ ((packed));
  15
  16 extern struct big x;
  17 double y;
  18
  19 void r (void)
  20 {
  21   double tmp = x.d;
  22 #if 1
  23   asm ("#": "+r" (tmp)
  24        : : "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
  25            "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
  26            "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
  27            "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31");
  28 #endif
  29   y = tmp;
  30 }
  31
  32 void w (void)
  33 {
  34   double tmp = y;
  35 #if 1
  36   asm ("#": "+r" (tmp)
  37        : : "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
  38            "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
  39            "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
  40            "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31");
  41 #endif
  42   x.d = tmp;
  43 }