Re: [ft-devel] [PATCH] Fix thumb2 inline assembly under LLVM.

[John Tytgat]

On 9/23/2013 10:59 AM, Chongyu Zhu wrote:
> When using 'ADD' with an immediate operand, the instruction
> is actually 'ADD Rd, Rn, #<imm12>', that is, the maximum of
> the immediate operand cannot exceed 4095. It will fail to
> compile with LLVM.
>
> However, in GCC, due to some legacy compatibility considerations,
> 'ADD.W' will be automatically emitted when the immediate operand
> is larger than 4095.

I guess add.w is also accepted by binutils' gas (used by gcc) so I don't 
think the test on __clang__ is actually necessary.

John.