[LLVMdev] Instruction Constraints Question
kparzysz at codeaurora.org
Wed Jan 23 14:27:38 PST 2013
On 1/23/2013 3:33 PM, Anton Korobeynikov wrote:
>> It doesn't look like TableGen supports Constraints beyond EARLY_CLOBBER
>> and TIED_TO. We would need to add a constraint such as "$dst != $src1,
>> $dst != $mask, $src1 != $mask" to the current patterns to enforce the
> You can emulate such constraints via early clobbing. Just mark dst as
> early clobbing.
How would you emulate src1 != mask via early clobbing?
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation
More information about the llvm-dev