gcc/gcc/fold-const.c

847   /* Strip any conversions that don't change the machine mode or signedness.  */
2776      because they may change the signedness of the arguments.  As pointers
3155   /* Discard any conversions that don't change the modes of ARG0 and ARG1
4044   /* Strip any conversions that don't change the machine mode.  */
4099    try to change a logical combination of comparisons into a range test.
4463    because signed overflow is undefined; otherwise, do not change
4936      change the sign of the result (from +0 to -0, or vice
5019      opposite sign, the first two transformations will change
5968    signed overflow being undefined.  Otherwise we do not change
6199 	 to change the code.  */
6227 	 will change the result if the original computation overflowed.  */
6311 	 If we have an unsigned type, we cannot do this since it will change
7915 	  /* Strip any conversions that don't change the mode.  This
8086 	  int change = 0;
8091 	    change = 1;
8101 	      change = (cst == 0);
8103 	      if (change
8114 	  if (change)
8417      might change the truth-value of A.  */
8603   /* Match A +- CST code arg1 and CST code arg1.  We can change the
9827    change *STRICT_OVERFLOW_P.  */
9955   /* Strip any conversions that don't change the mode.  This is
9958      the latter case, only strip conversions that don't change the
10852 	  /* Convert (C1/X)*C2 into (C1*C2)/X.  This transformation may change
13430   /* Strip any conversions that don't change the mode.  This is safe
13433      case, only strip conversions that don't change the signedness.
13991    are careful not to change the type of the overall expression).
14140    change original expr.  */
14775    set *STRICT_OVERFLOW_P to true; otherwise, don't change
14845    set *STRICT_OVERFLOW_P to true; otherwise, don't change
14973    set *STRICT_OVERFLOW_P to true; otherwise, don't change
15008    set *STRICT_OVERFLOW_P to true; otherwise, don't change
15144    set *STRICT_OVERFLOW_P to true; otherwise, don't change
15221    set *STRICT_OVERFLOW_P to true; otherwise, don't change
15312    change *STRICT_OVERFLOW_P.  */
15352    change *STRICT_OVERFLOW_P.  */
15460    change *STRICT_OVERFLOW_P.  */