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| author | hp <hp@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-07-16 03:18:23 +0000 |
|---|---|---|
| committer | hp <hp@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-07-16 03:18:23 +0000 |
| commit | 102c21ad4eb73a635450dceaa095df1f815ced18 (patch) | |
| tree | 3da01c0897396ffedb1b61b55133dc2a9f7c3389 /gcc/config/cris/cris.c | |
| parent | 71b2d56aa61074317b51946510fc1300a84eb9d3 (diff) | |
| download | gcc-102c21ad4eb73a635450dceaa095df1f815ced18.tar.gz | |
* config/cris/cris.c (cris_init_libfuncs): Handle initialization
of library functions for basic atomic compare-and-swap.
* config/cris/cris.h (TARGET_ATOMICS_MAY_CALL_LIBFUNCS): New macro.
* config/cris/cris.opt (munaligned-atomic-may-use-library): New
option.
* config/cris/sync.md ("atomic_fetch_<atomic_op_name><mode>")
("cris_atomic_fetch_<atomic_op_name><mode>_1")
("atomic_compare_and_swap<mode>")
("cris_atomic_compare_and_swap<mode>_1"): Make
conditional on TARGET_ATOMICS_MAY_CALL_LIBFUNCS for
sizes larger than byte.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@189504 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config/cris/cris.c')
| -rw-r--r-- | gcc/config/cris/cris.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/config/cris/cris.c b/gcc/config/cris/cris.c index 44e328bfb2a..71bb2760034 100644 --- a/gcc/config/cris/cris.c +++ b/gcc/config/cris/cris.c @@ -2761,6 +2761,16 @@ cris_init_libfuncs (void) set_optab_libfunc (udiv_optab, SImode, "__Udiv"); set_optab_libfunc (smod_optab, SImode, "__Mod"); set_optab_libfunc (umod_optab, SImode, "__Umod"); + + /* Atomic data being unaligned is unfortunately a reality. + Deal with it. */ + if (TARGET_ATOMICS_MAY_CALL_LIBFUNCS) + { + set_optab_libfunc (sync_compare_and_swap_optab, SImode, + "__cris_atcmpxchgr32"); + set_optab_libfunc (sync_compare_and_swap_optab, HImode, + "__cris_atcmpxchgr16"); + } } /* The INIT_EXPANDERS worker sets the per-function-data initializer and |