gcc/testsuite/gcc.c-torture/compile/20001226-1.c

   1 /* This does not assemble on m68hc11 because the function is larger
   2    than 64K.  */
   3 /* { dg-do assemble { xfail m6811-*-* m6812-*-* } } */
   4 /* { dg-xfail-if "jump beyond 128K not supported" "xtensa-*-*" "-O0" "" } */
   5
   6 /* This testcase exposed two branch shortening bugs on powerpc.  */
   7
   8 #define C(a,b) \
   9   if (a > b)  goto gt; \
  10   if (a < b)  goto lt;
  11
  12 #define C4(x,b) C((x)[0], b) C((x)[1],b) C((x)[2],b) C((x)[3],b)
  13 #define C16(x,y) C4(x, (y)[0]) C4(x, (y)[1]) C4(x, (y)[2]) C4(x, (y)[3])
  14
  15 #define C64(x,y) C16(x,y) C16(x+4,y) C16(x+8,y) C16(x+12,y)
  16 #define C256(x,y) C64(x,y) C64(x,y+4) C64(x,y+8) C64(x,y+12)
  17
  18 #define C1024(x,y) C256(x,y) C256(x+16,y) C256(x+32,y) C256(x+48,y)
  19 #define C4096(x,y) C1024(x,y) C1024(x,y+16) C1024(x,y+32) C1024(x,y+48)
  20
  21 unsigned foo(int x[64], int y[64])
  22 {
  23   C4096(x,y);
  24
  25   return 0x01234567;
  26  gt:
  27   return 0x12345678;
  28  lt:
  29   return 0xF0123456;
  30 }
  31