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[CSKY 2/n] Add basic tablegen infra for CSKY

Authored by zixuan-wu on Dec 6 2020, 7:06 PM.

Description

[CSKY 2/n] Add basic tablegen infra for CSKY

This introduce basic tablegen infra such as CSKY{InstrFormats,InstrInfo,RegisterInfo,}.td.
For now, only add instruction definitions for basic CSKY ISA operations, and the instruction format and register info are almost complete.

Our initial target is a working MC layer rather than codegen, so appropriate SelectionDAG patterns will come later.

Differential Revision: https://reviews.llvm.org/D89180

Details

Committed
zixuan-wuDec 6 2020, 7:56 PM
Differential Revision
D89180: [CSKY 2/n] Add basic tablegen infra for CSKY
Parents
rGefdd4630507e: [PowerPC] Fix chain for i1-to-fp operation
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