LCOV - code coverage report
Current view: top level - gcc - tree-ssa-loop.h (source / functions) Hit Total Coverage
Test: gcc.info Lines: 5 5 100.0 %
Date: 2020-05-30 12:51:24 Functions: 0 0 -
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /* Header file for SSA loop optimizations.
       2                 :            :    Copyright (C) 2013-2020 Free Software Foundation, Inc.
       3                 :            : 
       4                 :            : This file is part of GCC.
       5                 :            : 
       6                 :            : GCC is free software; you can redistribute it and/or modify it under
       7                 :            : the terms of the GNU General Public License as published by the Free
       8                 :            : Software Foundation; either version 3, or (at your option) any later
       9                 :            : version.
      10                 :            : 
      11                 :            : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12                 :            : WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13                 :            : FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14                 :            :  for more details.
      15                 :            : 
      16                 :            : You should have received a copy of the GNU General Public License
      17                 :            : along with GCC; see the file COPYING3.  If not see
      18                 :            : <http://www.gnu.org/licenses/>.  */
      19                 :            : 
      20                 :            : #ifndef GCC_TREE_SSA_LOOP_H
      21                 :            : #define GCC_TREE_SSA_LOOP_H
      22                 :            : 
      23                 :            : 
      24                 :            : /* Affine iv.  */
      25                 :            : 
      26                 :            : struct affine_iv
      27                 :            : {
      28                 :            :   /* Iv = BASE + STEP * i.  */
      29                 :            :   tree base, step;
      30                 :            : 
      31                 :            :   /* True if this iv does not overflow.  */
      32                 :            :   bool no_overflow;
      33                 :            : };
      34                 :            : 
      35                 :            : /* Description of number of iterations of a loop.  All the expressions inside
      36                 :            :    the structure can be evaluated at the end of the loop's preheader
      37                 :            :    (and due to ssa form, also anywhere inside the body of the loop).  */
      38                 :            : 
      39                 :   22756840 : class tree_niter_desc
      40                 :            : {
      41                 :            : public:
      42                 :            :   tree assumptions;     /* The boolean expression.  If this expression evaluates
      43                 :            :                            to false, then the other fields in this structure
      44                 :            :                            should not be used; there is no guarantee that they
      45                 :            :                            will be correct.  */
      46                 :            :   tree may_be_zero;     /* The boolean expression.  If it evaluates to true,
      47                 :            :                            the loop will exit in the first iteration (i.e.
      48                 :            :                            its latch will not be executed), even if the niter
      49                 :            :                            field says otherwise.  */
      50                 :            :   tree niter;           /* The expression giving the number of iterations of
      51                 :            :                            a loop (provided that assumptions == true and
      52                 :            :                            may_be_zero == false), more precisely the number
      53                 :            :                            of executions of the latch of the loop.  */
      54                 :            :   widest_int max;       /* The upper bound on the number of iterations of
      55                 :            :                            the loop.  */
      56                 :            : 
      57                 :            :   /* The simplified shape of the exit condition.  The loop exits if
      58                 :            :      CONTROL CMP BOUND is false, where CMP is one of NE_EXPR,
      59                 :            :      LT_EXPR, or GT_EXPR, and step of CONTROL is positive if CMP is
      60                 :            :      LE_EXPR and negative if CMP is GE_EXPR.  This information is used
      61                 :            :      by loop unrolling.  */
      62                 :            :   affine_iv control;
      63                 :            :   tree bound;
      64                 :            :   enum tree_code cmp;
      65                 :            : };
      66                 :            : 
      67                 :            : extern bool for_each_index (tree *, bool (*) (tree, tree *, void *), void *);
      68                 :            : extern char *get_lsm_tmp_name (tree ref, unsigned n, const char *suffix = NULL);
      69                 :            : extern unsigned tree_num_loop_insns (class loop *, struct eni_weights *);
      70                 :            : 
      71                 :            : /* Returns the loop of the statement STMT.  */
      72                 :            : 
      73                 :            : static inline class loop *
      74                 :  151692043 : loop_containing_stmt (gimple *stmt)
      75                 :            : {
      76                 :  151692043 :   basic_block bb = gimple_bb (stmt);
      77                 :  151692043 :   if (!bb)
      78                 :            :     return NULL;
      79                 :            : 
      80                 :  148573083 :   return bb->loop_father;
      81                 :            : }
      82                 :            : 
      83                 :            : #endif /* GCC_TREE_SSA_LOOP_H */

Generated by: LCOV version 1.0

LCOV profile is generated on x86_64 machine using following configure options: configure --disable-bootstrap --enable-coverage=opt --enable-languages=c,c++,fortran,go,jit,lto --enable-host-shared. GCC test suite is run with the built compiler.