ca77ab494a
We're (temporarily) disabling ExtInt for the '__atomic' builtins so we can better design their behavior later. The idea is until we do an audit/design for the way atomic builtins are supposed to work with _ExtInt, we should leave them restricted so they don't limit our future options, such as by binding us to a sub-optimal implementation via ABI.
Example after this change:
$ cat test.c
void f(_ExtInt(64) *ptr) {
__atomic_fetch_add(ptr, 1, 0);
}
$ clang -c test.c
test.c:2:22: error: argument to atomic builtin of type '_ExtInt' is not supported
__atomic_fetch_add(ptr, 1, 0);
^
1 error generated.
Differential Revision: https://reviews.llvm.org/D84049
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