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[PATCH][libstc++v3]Add new dg-require-thread-fence directive.

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libstdc++-v3/

2015-04-22  Renlin Li  <renlin.li@arm.com>

	* testsuite/lib/dg-options.exp (dg-require-thread-fence): New.
	* testsuite/lib/libstdc++.exp (check_v3_target_thread_fence): New.
	* testsuite/29_atomics/atomic_flag/clear/1.cc: Use it.
	* testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc: Likewise.
	* testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc: Likewise.

From-SVN: r222324
This commit is contained in:
Renlin Li 2015-04-22 14:01:02 +00:00 committed by Renlin Li
parent 860503d8cc
commit 04934297b8
6 changed files with 76 additions and 0 deletions
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8
libstdc++-v3/ChangeLog
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@ -1,3 +1,11 @@
2015-04-22 Renlin Li <renlin.li@arm.com>
* testsuite/lib/dg-options.exp (dg-require-thread-fence): New.
* testsuite/lib/libstdc++.exp (check_v3_target_thread_fence): New.
* testsuite/29_atomics/atomic_flag/clear/1.cc: Use it.
* testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc: Likewise.
* testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc: Likewise.
2015-04-21 Jonathan Wakely <jwakely@redhat.com>
* doc/xml/manual/configure.xml: Update descriptions of options

1
libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.cc
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@ -1,4 +1,5 @@
// { dg-options "-std=gnu++11" }
// { dg-require-thread-fence "" }
// Copyright (C) 2009-2015 Free Software Foundation, Inc.
//

1
libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc
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@ -1,4 +1,5 @@
// { dg-options "-std=gnu++11" }
// { dg-require-thread-fence "" }
// Copyright (C) 2008-2015 Free Software Foundation, Inc.
//

1
libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc
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@ -1,4 +1,5 @@
// { dg-options "-std=gnu++11" }
// { dg-require-thread-fence "" }
// Copyright (C) 2008-2015 Free Software Foundation, Inc.
//

9
libstdc++-v3/testsuite/lib/dg-options.exp
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@ -115,6 +115,15 @@ proc dg-require-cmath { args } {
return
}
proc dg-require-thread-fence { args } {
if { ![ check_v3_target_thread_fence ] } {
upvar dg-do-what dg-do-what
set dg-do-what [list [lindex ${dg-do-what} 0] "N" "P"]
return
}
return
}
proc dg-require-atomic-builtins { args } {
if { ![ check_v3_target_atomic_builtins ] } {
upvar dg-do-what dg-do-what

56
libstdc++-v3/testsuite/lib/libstdc++.exp
View File

@ -1221,6 +1221,62 @@ proc check_v3_target_cmath { } {
return $et_c99_math
}
proc check_v3_target_thread_fence { } {
global cxxflags
global DEFAULT_CXXFLAGS
global et_thread_fence
global tool
if { ![info exists et_thread_fence_target_name] } {
set et_thread_fence_target_name ""
}
# If the target has changed since we set the cached value, clear it.
set current_target [current_target_name]
if { $current_target != $et_thread_fence_target_name } {
verbose "check_v3_target_thread_fence: `$et_thread_fence_target_name'" 2
set et_thread_fence_target_name $current_target
if [info exists et_thread_fence] {
verbose "check_v3_target_thread_fence: removing cached result" 2
unset et_thread_fence
}
}
if [info exists et_thread_fence] {
verbose "check_v3_target_thread_fence: using cached result" 2
} else {
set et_thread_fence 0
# Set up and preprocess a C++11 test program that depends
# on the thread fence to be available.
set src thread_fence[pid].cc
set f [open $src "w"]
puts $f "int main() {"
puts $f "__atomic_thread_fence (__ATOMIC_SEQ_CST);"
puts $f "return 0;"
puts $f "}"
close $f
set cxxflags_saved $cxxflags
set cxxflags "$cxxflags $DEFAULT_CXXFLAGS -Werror -std=gnu++11"
set lines [v3_target_compile $src /dev/null executable ""]
set cxxflags $cxxflags_saved
file delete $src
if [string match "" $lines] {
# No error message, linking succeeded.
set et_thread_fence 1
} else {
verbose "check_v3_target_thread_fence: compilation failed" 2
}
}
verbose "check_v3_target_thread_fence: $et_thread_fence" 2
return $et_thread_fence
}
proc check_v3_target_atomic_builtins { } {
global cxxflags
global DEFAULT_CXXFLAGS