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3 Commits

Author SHA1 Message Date
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
Zi Xuan Wu
cfcac264e2 [CSKY] Support bitcast operation from/to double to/from two GPRs 
In soft ABI, floating num is passing in GPRs. So we need support
bitcovert from double to Hi and Lo GPRs and vice versa
 2022-04-07 18:36:04 +08:00
Zi Xuan Wu
4ad517e6b0 [CSKY] Add floating operation support including float and double 
CSKY arch has multiple FPU instruction versions such as FPU, FPUv2 and FPUv3 to implement floating operations.
For now, we just only support FPUv2 and FPUv3.

It includes the encoding, asm parsing of instructions and codegen of DAG nodes.
 2022-01-27 15:54:04 +08:00