gcc/testsuite/lib/c-compat.exp

   1 # Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008
   2 # Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with GCC; see the file COPYING3.  If not see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 # Please email any bugs, comments, and/or additions to this file to:
  19 # gcc-patches@gcc.gnu.org
  20
  21 # Globals.
  22
  23 global compat_use_alt
  24 global compat_same_alt
  25 global compat_have_dfp
  26 global compat_skip_list
  27
  28 # This file defines procs for determining features supported by both C
  29 # compilers for compatibility tests.
  30
  31 load_lib target-supports.exp
  32
  33 #
  34 # compat-use-alt-compiler -- make the alternate compiler the default
  35 #
  36 proc compat-use-alt-compiler { } {
  37     global GCC_UNDER_TEST ALT_CC_UNDER_TEST
  38     global compat_same_alt
  39
  40     # We don't need to do this if the alternate compiler is actually
  41     # the same as the compiler under test.
  42     if { $compat_same_alt == 0 } then {
  43         set GCC_UNDER_TEST $ALT_CC_UNDER_TEST
  44     }
  45 }
  46
  47 #
  48 # compat-use-tst-compiler -- make compiler under test the default
  49 #
  50 proc compat-use-tst-compiler { } {
  51     global GCC_UNDER_TEST compat_save_gcc_under_test
  52     global compat_same_alt
  53
  54     # We don't need to do this if the alternate compiler is actually
  55     # the same as the compiler under test.
  56
  57     if { $compat_same_alt == 0 } then {
  58         set GCC_UNDER_TEST $compat_save_gcc_under_test
  59     }
  60 }
  61
  62 # Find out whether both compilers support decimal float types.
  63 proc compat_setup_dfp { } {
  64     global compat_use_alt
  65     global compat_same_alt
  66     global compat_have_dfp
  67
  68     verbose "compat_setup_dfp: $compat_use_alt $compat_same_alt" 2
  69
  70     # Does the compiler under test support decimal float types?
  71     compat-use-tst-compiler
  72     set compat_have_dfp [check_effective_target_dfprt_nocache]
  73     verbose "compat_have_dfp for tst compiler: $compat_have_dfp" 2
  74
  75     # If there is an alternate compiler, does it support decimal float types?
  76     if { $compat_have_dfp == 1 && $compat_use_alt == 1 && $compat_same_alt == 0 } {
  77         compat-use-alt-compiler
  78         set compat_have_dfp [check_effective_target_dfprt_nocache]
  79         compat-use-tst-compiler
  80         verbose "compat_have_dfp for alt compiler: $compat_have_dfp" 2
  81     }
  82
  83     # If decimal float is not supported, add it to the skip list, which
  84     # affects code in the header files.
  85     if { $compat_have_dfp == 0 } {
  86         global compat_skip_list
  87         lappend compat_skip_list "DECIMAL_FLOAT"
  88     }
  89 }
  90
  91 # If either compiler does not support decimal float types, skip this test.
  92
  93 proc dg-require-compat-dfp { args } {
  94     global compat_have_dfp
  95     if { $compat_have_dfp == 0 } {
  96         upvar dg-do-what dg-do-what
  97         set dg-do-what [list [lindex ${dg-do-what} 0] "N" "P"]
  98     }
  99 }