Commit Graph

4 Commits

Author SHA1 Message Date
Alex Bradbury 1a4272914d [RISCV] Add basic RISCVAsmParser
This doesn't yet support parsing things like %pcrel_hi(foo), but will handle
basic instructions with register or immediate operands.

Differential Revision: https://reviews.llvm.org/D23563

llvm-svn: 310361
2017-08-08 14:32:35 +00:00
Alex Bradbury 6b2cca7f8f [RISCV] Add bare-bones RISC-V MCTargetDesc
This is enough to compile and link but doesn't yet do anything particularly 
useful. Once an ASM parser and printer are added in the next two patches, the 
whole thing can be usefully tested.

Differential Revision: https://reviews.llvm.org/D23562

llvm-svn: 285770
2016-11-01 23:47:30 +00:00
Alex Bradbury 24d9b13b36 [RISCV 4/10] Add basic RISCV{InstrFormats,InstrInfo,RegisterInfo,}.td
For now, only add instruction definitions for basic ALU operations. Our 
initial target is a working MC layer rather than codegen, so appropriate 
SelectionDAG patterns will come later.

Differential Revision: https://reviews.llvm.org/D23561

llvm-svn: 285769
2016-11-01 23:40:28 +00:00
Alex Bradbury b2e5472d85 [RISCV] Add stub backend
This contains just enough for lib/Target/RISCV to compile. Notably a basic 
RISCVTargetMachine and RISCVTargetInfo. At this point you can attempt llc 
-march=riscv32 myinput.ll and will find it fails due to the lack of 
MCAsmInfo.

See http://lists.llvm.org/pipermail/llvm-dev/2016-August/103748.html for 
further discussion

Differential Revision: https://reviews.llvm.org/D23560

llvm-svn: 285712
2016-11-01 17:27:54 +00:00