[LLVMdev] Disabling emission of jump table info

[Richard Osborne]

On 23/02/10 14:58, Richard Osborne wrote:
> I've recently changed the XCore target to implement BR_JT as a jump to a
> series jumps. The jump table entries are expand inline in the function
> so there is no longer a need to emit jump tables at the end of the
> function. However the emission of jump tables at the end of a function
> is done inside the AsmPrinter base class and there seems to be no way of
> disabling this.
>
> This also seems to effect code produced for ARM Thumb2. Again each jump
> table is emitted twice - once inline in the code and once at the end of
> the function. The jump tables at the end of the function are unused.
>
> What would be the preferred way of dealing with this? Should I add a
> variable to AsmPrinter that can be set by targets to disable this
> emission at the end?
The attached patch adds a bool to MCAsmInfo that can be used to disable 
the emission of jump tables at the end of a function and updates the 
XCore target to set this. Is this OK to commit?

-- 
Richard Osborne | XMOS
http://www.xmos.com


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