[PATCH] D44661: [libcxx] optimize reduce(), hmin(), hmax() by reordering the operations.

[Zhihao Yuan via Phabricator via cfe-commits]

lichray added inline comments.


================
Comment at: libcxx/include/experimental/simd:2196
+                        typename _SimdType::value_type>::type
+__hmax(const _SimdType& __v) {
   auto __acc = __v[0];
----------------
These conditions are too long, consider
```
__hmax_impl(const _SimdType& __v, true_type, ...);
__hmax_impl(const _SimdType& __v, false_type, true_type);
__hmax_impl(const _SimdType& __v, false_type, false_type);
```


https://reviews.llvm.org/D44661



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