+2013-11-09 Joseph Myers <joseph@codesourcery.com>
+
+ * c-common.c (atomic_size_supported_p): New function.
+ (resolve_overloaded_atomic_exchange)
+ (resolve_overloaded_atomic_compare_exchange)
+ (resolve_overloaded_atomic_load, resolve_overloaded_atomic_store):
+ Use it instead of comparing size with a local list of sizes.
+
2013-11-07 Andrew MacLeod <amacleod@redhat.com>
Joseph Myers <joseph@codesourcery.com>
}
+/* Return whether atomic operations for naturally aligned N-byte
+ arguments are supported, whether inline or through libatomic. */
+static bool
+atomic_size_supported_p (int n)
+{
+ switch (n)
+ {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ return true;
+
+ case 16:
+ return targetm.scalar_mode_supported_p (TImode);
+
+ default:
+ return false;
+ }
+}
+
/* This will process an __atomic_exchange function call, determine whether it
needs to be mapped to the _N variation, or turned into a library call.
LOC is the location of the builtin call.
}
/* If not a lock-free size, change to the library generic format. */
- if (n != 1 && n != 2 && n != 4 && n != 8 && n != 16)
+ if (!atomic_size_supported_p (n))
{
*new_return = add_atomic_size_parameter (n, loc, function, params);
return true;
}
/* If not a lock-free size, change to the library generic format. */
- if (n != 1 && n != 2 && n != 4 && n != 8 && n != 16)
+ if (!atomic_size_supported_p (n))
{
/* The library generic format does not have the weak parameter, so
remove it from the param list. Since a parameter has been removed,
}
/* If not a lock-free size, change to the library generic format. */
- if (n != 1 && n != 2 && n != 4 && n != 8 && n != 16)
+ if (!atomic_size_supported_p (n))
{
*new_return = add_atomic_size_parameter (n, loc, function, params);
return true;
}
/* If not a lock-free size, change to the library generic format. */
- if (n != 1 && n != 2 && n != 4 && n != 8 && n != 16)
+ if (!atomic_size_supported_p (n))
{
*new_return = add_atomic_size_parameter (n, loc, function, params);
return true;