mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-04-04 14:41:14 +08:00
Code Issues Packages Projects Releases Wiki Activity

Define __GCC_ATOMIC_TEST_AND_SET_TRUEVAL

Browse Source 
* target.def (TARGET_ATOMIC_TEST_AND_SET_TRUEVAL): New.
        * c-cppbuiltin.c (cpp_atomic_builtins): Define
        __GCC_ATOMIC_TEST_AND_SET_TRUEVAL.
        * doc/tm.texi.in (TARGET_ATOMIC_TEST_AND_SET_TRUEVAL): Add doc hook.
        * doc/tm.texi: Rebuild.

From-SVN: r183581
This commit is contained in:
Richard Henderson 2012-01-26 13:48:27 -08:00 committed by Richard Henderson
parent 15e73e0657
commit 57c5ab1ba6
5 changed files with 26 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2012-01-27 Richard Henderson <rth@redhat.com>
* target.def (TARGET_ATOMIC_TEST_AND_SET_TRUEVAL): New.
* c-cppbuiltin.c (cpp_atomic_builtins): Define
__GCC_ATOMIC_TEST_AND_SET_TRUEVAL.
* doc/tm.texi.in (TARGET_ATOMIC_TEST_AND_SET_TRUEVAL): Add doc hook.
* doc/tm.texi: Rebuild.
2012-01-27 Richard Henderson <rth@redhat.com>
* optabs.c (gen_atomic_test_and_set): Remove default.

5
gcc/c-family/c-cppbuiltin.c
View File

@ -670,6 +670,11 @@ cpp_atomic_builtins (cpp_reader *pfile)
builtin_define_with_int_value ("__GCC_ATOMIC_LLONG_LOCK_FREE",
(have_swap[SWAP_INDEX (long_long_integer_type_node)]? 2 : 1));
/* If we're dealing with a "set" value that doesn't exactly correspond
to a boolean truth value, let the library work around that. */
builtin_define_with_int_value ("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL",
targetm.atomic_test_and_set_trueval);
/* ptr_type_node can't be used here since ptr_mode is only set when
toplev calls backend_init which is not done with -E or pch. */
psize = POINTER_SIZE / BITS_PER_UNIT;

4
gcc/doc/tm.texi
View File

@ -11359,3 +11359,7 @@ value of @code{TARGET_CONST_ANCHOR} is a power of 2. For example, on
MIPS, where add-immediate takes a 16-bit signed value,
@code{TARGET_CONST_ANCHOR} is set to @samp{0x8000}. The default value
is zero, which disables this optimization. @end deftypevr
@deftypevr {Target Hook} {unsigned char} TARGET_ATOMIC_TEST_AND_SET_TRUEVAL
This value should be set if the result written by @code{atomic_test_and_set} is not exactly 1, i.e. the @code{bool} @code{true}.
@end deftypevr

2
gcc/doc/tm.texi.in
View File

@ -11237,3 +11237,5 @@ value of @code{TARGET_CONST_ANCHOR} is a power of 2. For example, on
MIPS, where add-immediate takes a 16-bit signed value,
@code{TARGET_CONST_ANCHOR} is set to @samp{0x8000}. The default value
is zero, which disables this optimization. @end deftypevr
@hook TARGET_ATOMIC_TEST_AND_SET_TRUEVAL

7
gcc/target.def
View File

@ -2667,6 +2667,13 @@ DEFHOOK
enum unwind_info_type, (void),
default_debug_unwind_info)
DEFHOOKPOD
(atomic_test_and_set_trueval,
"This value should be set if the result written by\
@code{atomic_test_and_set} is not exactly 1, i.e. the\
@code{bool} @code{true}.",
unsigned char, 1)
/* Leave the boolean fields at the end. */
/* True if we can create zeroed data by switching to a BSS section