is_register_pass_v

Synopsis

Declared in <folly/lang/Align.h>

template<typename T>
constexpr bool is_register_pass_v = (sizeof(T) <= register_pass_max_size) && std::is_trivially_copyable_v<T>;

Description

Whether a value may be passed in a register.

Trivially‐copyable values up to register_pass_max_size in width may be passed by‐value in registers rather than implicitly by‐reference to stack copies.

Approximate. Accuracy is not promised.

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