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encode: Only check MovImm16 encode size in hiiiiiiiiiiiiiiii case

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This commit is contained in:
Merry 2022-07-02 22:12:13 +01:00
parent e1aa3456f6
commit f9de15be61
1 changed files with 5 additions and 3 deletions
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8
include/oaknut/impl/arm64_encode_helpers.inc.hpp
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@ -39,9 +39,11 @@ template<std::uint32_t splat>
std::uint32_t encode(MovImm16 v)
{
static_assert(std::popcount(splat) == 17 || std::popcount(splat) == 18);
constexpr std::uint32_t mask = (1 << std::popcount(splat)) - 1;
if ((v.m_encoded & mask) != v.m_encoded)
throw "invalid MovImm16";
if constexpr (std::popcount(splat) == 17) {
constexpr std::uint32_t mask = (1 << std::popcount(splat)) - 1;
if ((v.m_encoded & mask) != v.m_encoded)
throw "invalid MovImm16";
}
return detail::pdep(v.m_encoded, splat);
}