reported by cppcheck as:
[unit/internal/uniform_ops.cpp:78]: (error) Shifting signed 32-bit value by 31 bits is undefined behaviour
[unit/internal/uniform_ops.cpp:109]: (error) Shifting signed 32-bit value by 31 bits is undefined behaviour
[unit/internal/uniform_ops.cpp:127]: (error) Shifting signed 32-bit value by 31 bits is undefined behaviour
[unit/internal/uniform_ops.cpp:145]: (error) Shifting signed 32-bit value by 31 bits is undefined behaviour
On 64-bit platforms, the Limex 64 model is implemented in normal GPRs.
On 32-bit platforms, however, 128-bit SSE registers are used for the
runtime implementation.
