Emitting function stack size information
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

A section containing metadata on function stack sizes will be emitted when
``TargetLoweringObjectFile::StackSizesSection`` is not null, and
``TargetOptions::EmitStackSizeSection`` is set (-stack-size-section). The
section will contain an array of pairs of function symbol values (pointer size)
and stack sizes (unsigned LEB128). The stack size values only include the space
allocated in the function prologue. Functions with dynamic stack allocations are
not included.