dist/gcc/loop-iv.c

1321 /* Marks registers altered by EXPR in set ALT.  */
1736    set of altered regs.  */
1739 simplify_using_condition (rtx cond, rtx *expr, regset altered)
1743   /* If some register gets altered later, we do not really speak about its
1745   if (altered && altered_reg_used (cond, altered))
1862   regset altered, this_altered;
1930   altered = ALLOC_REG_SET (&reg_obstack);
1948 	      simplify_using_condition (cond, expr, altered);
1956 		      simplify_using_condition (XEXP (note, 0), expr, altered);
2013 		    simplify_using_condition (XEXP (note, 0), expr, altered);
2045 	  IOR_REG_SET (altered, this_altered);
2047 	  /* If the expression now contains regs that have been altered, we
2051 	  if (altered_reg_used (*expr, altered))
2067   FREE_REG_SET (altered);