1 # Copyright (C) 2002-2019 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with GCC; see the file COPYING3. If not see
15 # <http://www.gnu.org/licenses/>.
17 # Please email any bugs, comments, and/or additions to this file to:
18 # gcc-patches@gcc.gnu.org
23 global compat_same_alt
24 global compat_have_dfp
25 global compat_skip_list
27 # This file defines procs for determining features supported by both C
28 # compilers for compatibility tests.
30 load_lib target-supports.exp
31 load_lib target-libpath.exp
34 # compat-use-alt-compiler -- make the alternate compiler the default
36 proc compat-use-alt-compiler { } {
37 global GCC_UNDER_TEST ALT_CC_UNDER_TEST
38 global compat_same_alt compat_alt_caret compat_alt_color compat_no_line_no
39 global TEST_ALWAYS_FLAGS
41 # We don't need to do this if the alternate compiler is actually
42 # the same as the compiler under test.
43 if { $compat_same_alt == 0 } then {
44 set GCC_UNDER_TEST $ALT_CC_UNDER_TEST
45 if { $compat_alt_caret == 0 } then {
46 regsub -- "-fno-diagnostics-show-caret" $TEST_ALWAYS_FLAGS "" TEST_ALWAYS_FLAGS
48 if { $compat_alt_color == 0 } then {
49 regsub -- "-fdiagnostics-color=never" $TEST_ALWAYS_FLAGS "" TEST_ALWAYS_FLAGS
51 if { $compat_no_line_no == 0 } then {
52 regsub -- "-fno-diagnostics-show-line-numbers" $TEST_ALWAYS_FLAGS "" TEST_ALWAYS_FLAGS
54 restore_gcc_exec_prefix_env_var
59 # compat-use-tst-compiler -- make compiler under test the default
61 proc compat-use-tst-compiler { } {
62 global GCC_UNDER_TEST compat_save_gcc_under_test
63 global compat_same_alt
64 global TEST_ALWAYS_FLAGS compat_save_TEST_ALWAYS_FLAGS
66 # We don't need to do this if the alternate compiler is actually
67 # the same as the compiler under test.
69 if { $compat_same_alt == 0 } then {
70 set GCC_UNDER_TEST $compat_save_gcc_under_test
71 set TEST_ALWAYS_FLAGS $compat_save_TEST_ALWAYS_FLAGS
72 set_gcc_exec_prefix_env_var
76 # Find out whether both compilers support decimal float types.
77 proc compat_setup_dfp { } {
79 global compat_same_alt
80 global compat_have_dfp
81 global compat_alt_caret
82 global compat_alt_color
83 global compat_no_line_no
84 global TEST_ALWAYS_FLAGS compat_save_TEST_ALWAYS_FLAGS
86 set compat_alt_caret 0
87 set compat_alt_color 0
88 set compat_no_line_no 0
89 set compat_save_TEST_ALWAYS_FLAGS $TEST_ALWAYS_FLAGS
91 verbose "compat_setup_dfp: $compat_use_alt $compat_same_alt" 2
93 # Does the compiler under test support decimal float types?
94 compat-use-tst-compiler
95 set compat_have_dfp [check_effective_target_dfprt_nocache]
96 verbose "compat_have_dfp for tst compiler: $compat_have_dfp" 2
98 if { $compat_use_alt == 1 && $compat_same_alt == 0 } {
99 compat-use-alt-compiler
100 if { [check_no_compiler_messages_nocache compat_alt_has_caret object {
101 int dummy; } "-fno-diagnostics-show-caret"] != 0 } {
102 set compat_alt_caret 1
104 if { [check_no_compiler_messages_nocache compat_alt_has_color object {
105 int dummy; } "-fdiagnostics-color=never"] != 0 } {
106 set compat_alt_color 1
108 if { [check_no_compiler_messages_nocache compat_alt_has_no_line_no object {
109 int dummy; } "-fno-diagnostics-show-line-numbers"] != 0 } {
110 set compat_no_line_no 1
113 compat-use-tst-compiler
116 # If there is an alternate compiler, does it support decimal float types?
117 if { $compat_have_dfp == 1 && $compat_use_alt == 1 && $compat_same_alt == 0 } {
118 compat-use-alt-compiler
119 set compat_have_dfp [check_effective_target_dfprt_nocache]
120 compat-use-tst-compiler
121 verbose "compat_have_dfp for alt compiler: $compat_have_dfp" 2
124 # If decimal float is not supported, add it to the skip list, which
125 # affects code in the header files.
126 if { $compat_have_dfp == 0 } {
127 global compat_skip_list
128 lappend compat_skip_list "DECIMAL_FLOAT"
132 # If either compiler does not support decimal float types, skip this test.
134 proc dg-require-compat-dfp { args } {
135 global compat_have_dfp
136 if { $compat_have_dfp == 0 } {
137 upvar dg-do-what dg-do-what
138 set dg-do-what [list [lindex ${dg-do-what} 0] "N" "P"]