T32 code size diagnostics
In T32 code, some instructions, for example a branch or
LDR (PC-relative), can be encoded as either a 32-bit or 16-bit instruction. armasm chooses the size of the instruction encoding.
armasm can issue a warning when it assembles a T32 instruction to a 32-bit encoding when it could have used a 16-bit encoding.
To enable this warning, use the
--diag_warning 1813 command-line option when invoking armasm.