C-SKY: Define HAVE_sync_compare_and_swap*.

The SYNC operations are implemented as library functions, not
NSN patterns.  As a result, the HAVE defines for the patterns are
not defined.  We need to define them to generate the corresponding
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_* and __GCC_ATOMIC_*_LOCK_FREE
defines.

gcc/
	* config/csky/csky-linux-elf.h (HAVE_sync_compare_and_swapqi):
	Defined.
	(HAVE_sync_compare_and_swaphi): Likewise.
	(HAVE_sync_compare_and_swapsi): Likewise.

diff --git a/gcc/config/csky/csky-linux-elf.h b/gcc/config/csky/csky-linux-elf.h
index 58a1f3978b1810027b6c37adc6ccff0ad9e08f69..e94eb8c579ebf9a2f5d3157eff4bf0175002d8cf 100644 (file)
--- a/gcc/config/csky/csky-linux-elf.h
+++ b/gcc/config/csky/csky-linux-elf.h
@@ -133,3 +133,13 @@
 #ifdef IN_LIBGCC2
 extern int cacheflush (void *__addr, const int __nbytes, const int __op);
 #endif
+
+/* The SYNC operations are implemented as library functions, not
+   INSN patterns.  As a result, the HAVE defines for the patterns are
+   not defined.  We need to define them to generate the corresponding
+   __GCC_HAVE_SYNC_COMPARE_AND_SWAP_* and __GCC_ATOMIC_*_LOCK_FREE
+   defines.  */
+
+#define HAVE_sync_compare_and_swapqi 1
+#define HAVE_sync_compare_and_swaphi 1
+#define HAVE_sync_compare_and_swapsi 1