diff options
Diffstat (limited to 'lldb/source/Utility/Scalar.cpp')
| -rw-r--r-- | lldb/source/Utility/Scalar.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/lldb/source/Utility/Scalar.cpp b/lldb/source/Utility/Scalar.cpp index 23d50b9eaba..3393af921dd 100644 --- a/lldb/source/Utility/Scalar.cpp +++ b/lldb/source/Utility/Scalar.cpp @@ -416,6 +416,51 @@ Scalar &Scalar::operator=(llvm::APInt rhs) { Scalar::~Scalar() = default; +Scalar::Type Scalar::GetBestTypeForBitSize(size_t bit_size, bool sign) { + // Scalar types are always host types, hence the sizeof(). + if (sign) { + if (bit_size <= sizeof(int)*8) return Scalar::e_sint; + if (bit_size <= sizeof(long)*8) return Scalar::e_slong; + if (bit_size <= sizeof(long long)*8) return Scalar::e_slonglong; + if (bit_size <= 128) return Scalar::e_sint128; + if (bit_size <= 256) return Scalar::e_sint256; + if (bit_size <= 512) return Scalar::e_sint512; + } else { + if (bit_size <= sizeof(unsigned int)*8) return Scalar::e_uint; + if (bit_size <= sizeof(unsigned long)*8) return Scalar::e_ulong; + if (bit_size <= sizeof(unsigned long long)*8) return Scalar::e_ulonglong; + if (bit_size <= 128) return Scalar::e_uint128; + if (bit_size <= 256) return Scalar::e_uint256; + if (bit_size <= 512) return Scalar::e_uint512; + } + return Scalar::e_void; +}; + +void Scalar::TruncOrExtendTo(Scalar::Type type, uint16_t bits) { + switch (type) { + case e_sint: + case e_slong: + case e_slonglong: + case e_sint128: + case e_sint256: + case e_sint512: + m_integer = m_integer.sextOrTrunc(bits); + break; + case e_uint: + case e_ulong: + case e_ulonglong: + case e_uint128: + case e_uint256: + case e_uint512: + m_integer = m_integer.zextOrTrunc(bits); + break; + default: + llvm_unreachable("Promoting a Scalar to a specific number of bits is only " + "supported for integer types."); + } + m_type = type; +} + bool Scalar::Promote(Scalar::Type type) { bool success = false; switch (m_type) { |
