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3 Commits

Author SHA1 Message Date
Zi Xuan Wu (Zeson) 70b8b738c5 [CSKY] Fix the btsti16 instruction missing in generic processor 
Normally, generic processor does not have any SubtargetFeature. And it
can just generate most basic instructions which have no Predicates to
guard.

But it needs to enbale predicate for the btsti16 instruction as one of the most basic instructions.
Or the generic processor can't finish codegen process. So Add FeatureBTST16 SubtargetFeature to generic ProcessorModel.
 2022-07-27 17:39:15 +08:00
Zi Xuan Wu (Zeson) 08db089124 [CSKY] Fix the testcase error due to the verifyInstructionPredicates 
- Test cases for arch only has 16-bit instruction such as ck801/ck802 need
compile with -mattr=+btst16
- Fix the GPR copy instruction with MOV16 for 16-bit only arch.
 2022-07-21 15:53:50 +08:00
Zi Xuan Wu 208f93c1fd [CSKY] support select instruction in floating type 
In FPUv3, there is fsel.32/64 instruction to select float/double type data.
In FPUv2, split block and use branch and move instruction to select float/double type data.
 2022-04-08 12:38:50 +08:00