gcc/testsuite/gcc.dg/pr47555.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 #define FILL_BACK *ptrRGB++=0; *ptrRGB++=0; *ptrRGB++=0;
   5
   6
   7 void uncompact(unsigned char* ptrRGB, const unsigned int* ptrSrc, const unsigned char* ptrRGBcompact, int line, int nbPixLeft)
   8 {
   9
  10 #define BIT_2_RGB32                                                     \
  11   if ((v & 0x00000001)){ nbPixLeft--; *ptrRGB++ = *ptrRGBcompact++; *ptrRGB++ = *ptrRGBcompact++; *ptrRGB++ = *ptrRGBcompact++; } \
  12   else{ FILL_BACK }                                                     \
  13   v >>= 1;
  14 #define BIT_2_RGB16                                                     \
  15   if ((v16 & 0x0001)){ nbPixLeft--; *ptrRGB++ = *ptrRGBcompact++; *ptrRGB++ = *ptrRGBcompact++; *ptrRGB++ = *ptrRGBcompact++; } \
  16   else{ FILL_BACK }                                                     \
  17   v16 >>= 1;
  18
  19   int x;
  20   unsigned int v, *ptrSrc32bits=(unsigned int*)ptrSrc;
  21   unsigned short v16,*ptrSrc16bits;
  22
  23   for(x=0; x<line; x++) {
  24     v = *ptrSrc32bits++;
  25     BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32
  26     BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32
  27     BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32
  28     BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32 BIT_2_RGB32
  29   }
  30
  31   ptrSrc16bits=(unsigned short *)ptrSrc32bits;
  32   v16 = *ptrSrc16bits++;
  33   BIT_2_RGB16   BIT_2_RGB16     BIT_2_RGB16     BIT_2_RGB16     BIT_2_RGB16     BIT_2_RGB16
  34   BIT_2_RGB16   BIT_2_RGB16     BIT_2_RGB16     BIT_2_RGB16     BIT_2_RGB16     BIT_2_RGB16
  35
  36 }