modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/compile/20031125-1.c (about)

     1  short *_offsetTable;
     2  /* This tests to make sure PRE splits the entry block ->block 0 edge
     3     when there are multiple block 0 predecessors.
     4     This is done so that we don't end up with an insertion on the 
     5     entry block -> block 0 edge which would require a split at insertion
     6     time.  
     7     PR 13163.  */
     8  void proc4WithoutFDFE(char *dst, const char *src, int next_offs, int bw,
     9  		int bh, int pitch)
    10  {
    11  	do {
    12  		int i = bw;
    13  		int code = *src++;
    14  		int x, l;
    15  		int length = *src++ + 1;
    16  
    17  		for (l = 0; l < length; l++) {
    18  			int x;
    19  
    20  			for (x = 0; x < 4; x++) ;
    21  			if (i == 0)
    22  				dst += pitch * 3;
    23  		}
    24  		char *dst2 = dst + _offsetTable[code] + next_offs;
    25  
    26  		for (x = 0; x < 4; x++) {
    27  			int j = 0;
    28  			(dst + pitch * x)[j] = (dst2 + pitch * x)[j];
    29  		}
    30  		dst += pitch * 3;
    31  	} while (--bh);
    32  }
    33  
    34