Coverage Report

Created: 2017-03-28 09:59

/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/tools/polly/lib/External/isl/isl_local.c
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Source (jump to first uncovered line)
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/*
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 * Copyright 2014      Ecole Normale Superieure
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 *
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 * Use of this software is governed by the MIT license
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 *
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 * Written by Sven Verdoolaege,
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 * Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France
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 */
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#include <isl_mat_private.h>
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#include <isl_seq.h>
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/* Given a matrix "div" representing local variables,
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 * is the variable at position "pos" marked as not having
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 * an explicit representation?
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 * Note that even if this variable is not marked in this way and therefore
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 * does have an explicit representation, this representation may still
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 * depend (indirectly) on other local variables that do not
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 * have an explicit representation.
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 */
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isl_bool isl_local_div_is_marked_unknown(__isl_keep isl_mat *div, int pos)
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14.7k
{
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14.7k
  if (!div)
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0
    return isl_bool_error;
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14.7k
  
if (14.7k
pos < 0 || 14.7k
pos >= div->n_row14.7k
)
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0
    isl_die(isl_mat_get_ctx(div), isl_error_invalid,
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14.7k
      "position out of bounds", return isl_bool_error);
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14.7k
  
return 14.7k
isl_int_is_zero14.7k
(div->row[pos][0]);
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14.7k
}
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/* Given a matrix "div" representing local variables,
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 * does the variable at position "pos" have a complete explicit representation?
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 * Having a complete explicit representation requires not only
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 * an explicit representation, but also that all local variables
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 * that appear in this explicit representation in turn have
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 * a complete explicit representation.
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 */
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isl_bool isl_local_div_is_known(__isl_keep isl_mat *div, int pos)
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{
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  isl_bool marked;
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  int i, n, off;
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533
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  if (!div)
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0
    return isl_bool_error;
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533
  
if (533
pos < 0 || 533
pos >= div->n_row533
)
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0
    isl_die(isl_mat_get_ctx(div), isl_error_invalid,
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      "position out of bounds", return isl_bool_error);
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533
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  marked = isl_local_div_is_marked_unknown(div, pos);
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  if (
marked < 0 || 533
marked533
)
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5
    return isl_bool_not(marked);
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533
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  n = isl_mat_rows(div);
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  off = isl_mat_cols(div) - n;
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528
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1.37k
  for (i = n - 1; 
i >= 01.37k
;
--i845
)
{845
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    isl_bool known;
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845
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    if (isl_int_is_zero(div->row[pos][off + i]))
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      continue;
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0
    known = isl_local_div_is_known(div, i);
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0
    if (
known < 0 || 0
!known0
)
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0
      return known;
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0
  }
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528
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  return isl_bool_true;
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528
}
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/* Compare two matrices representing local variables, defined over
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 * the same space.
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 *
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 * Return -1 if "div1" is "smaller" than "div2", 1 if "div1" is "greater"
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 * than "div2" and 0 if they are equal.
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 *
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 * The order is fairly arbitrary.  We do "prefer" divs that only involve
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 * earlier dimensions in the sense that we consider matrices where
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 * the first differing div involves earlier dimensions to be smaller.
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 */
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int isl_local_cmp(__isl_keep isl_mat *div1, __isl_keep isl_mat *div2)
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2.97k
{
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2.97k
  int i;
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  int cmp;
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  isl_bool unknown1, unknown2;
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  int last1, last2;
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2.97k
  int n_col;
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2.97k
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2.97k
  if (div1 == div2)
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0
    return 0;
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2.97k
  
if (2.97k
!div12.97k
)
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0
    return -1;
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2.97k
  
if (2.97k
!div22.97k
)
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0
    return 1;
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2.97k
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2.97k
  
if (2.97k
div1->n_row != div2->n_row2.97k
)
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    return div1->n_row - div2->n_row;
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2.66k
  n_col = isl_mat_cols(div1);
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2.90k
  for (i = 0; 
i < div1->n_row2.90k
;
++i241
)
{512
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    unknown1 = isl_local_div_is_marked_unknown(div1, i);
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512
    unknown2 = isl_local_div_is_marked_unknown(div2, i);
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512
    if (
unknown1 && 512
unknown20
)
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0
      continue;
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512
    
if (512
unknown1512
)
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0
      return 1;
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512
    
if (512
unknown2512
)
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0
      return -1;
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    last1 = isl_seq_last_non_zero(div1->row[i] + 1, n_col - 1);
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    last2 = isl_seq_last_non_zero(div2->row[i] + 1, n_col - 1);
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    if (last1 != last2)
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      return last1 - last2;
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    cmp = isl_seq_cmp(div1->row[i], div2->row[i], n_col);
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    if (cmp != 0)
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      return cmp;
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  }
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2.66k
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2.39k
  return 0;
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2.66k
}