================
@@ -111,7 +114,69 @@ unsigned invalid_bithacks(integer_like w, unsigned x,
signed y, unsigned z) {
}
template <class T>
-T bithacks_generic(T x) {
- // substitution only valid for some instantiation of bithacks_generic
+T has_one_bit_bithack_generic(T x) {
+ // substitution only valid for some instantiation of
has_one_bit_bithack_generic
return x && !(x & (x - 1));
}
+
+/*
+ * popcount pattern
+ */
+namespace std {
+using size_t = decltype(sizeof(0));
+template<size_t N> class bitset {
+ public:
+ bitset(unsigned long);
----------------
localspook wrote:
Nit: this should technically be:
```suggestion
bitset(unsigned long long);
```
https://github.com/llvm/llvm-project/pull/185740
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